1e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang/* 2e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * Author: Henry Bruce <henry.bruce@intel.com> 3e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * Copyright (c) 2015 Intel Corporation. 4e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * 5e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * Permission is hereby granted, free of charge, to any person obtaining 6e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * a copy of this software and associated documentation files (the 7e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * "Software"), to deal in the Software without restriction, including 8e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * without limitation the rights to use, copy, modify, merge, publish, 9e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * distribute, sublicense, and/or sell copies of the Software, and to 10e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * permit persons to whom the Software is furnished to do so, subject to 11e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * the following conditions: 12e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * 13e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * The above copyright notice and this permission notice shall be 14e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * included in all copies or substantial portions of the Software. 15e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * 16e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 20e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 21e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 22e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang */ 24e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 25e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include <stdlib.h> 26e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include <string.h> 27e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include <time.h> 286b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#include <sys/time.h> 29e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include <errno.h> 30e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "linux/i2c-dev.h" 31e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "common.h" 32e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "ftd2xx.h" 33e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "libft4222.h" 34e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "usb/ftdi_ft4222.h" 35e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 36e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#define PLATFORM_NAME "FTDI FT4222" 37e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#define I2CM_ERROR(status) (((status) &0x02) != 0) 38e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#define PCA9672_ADDR 0x20 396b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#define PCA9545_ADDR 0x70 406b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#define PCA9672_PINS 8 416b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#define PCA9545_BUSSES 4 426b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#define GPIO_PORT_IO_RESET GPIO_PORT2 436b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#define GPIO_PORT_IO_STATUS GPIO_PORT3 446b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 456b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic FT_HANDLE ftHandleGpio = (FT_HANDLE) NULL; //GPIO Handle 466b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic FT_HANDLE ftHandleI2c = (FT_HANDLE) NULL; //I2C/SPI Handle 476b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic FT_HANDLE ftHandleSpi = (FT_HANDLE) NULL; //I2C/SPI Handle 487d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanstatic GPIO_Dir pinDirection[] = {GPIO_OUTPUT, GPIO_OUTPUT, GPIO_OUTPUT, GPIO_OUTPUT}; 49e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int bus_speed = 400; 506b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic int numFt4222GpioPins = 4; 516b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic int numI2cGpioExpanderPins = 8; 526b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic int numI2cSwitchBusses = 4; 536b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic int currentI2cBus = 0; 54e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 55e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_result_t 56e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_init() 57e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 586b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare mraa_result_t mraaStatus = MRAA_ERROR_NO_RESOURCES; 59e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT_DEVICE_LIST_INFO_NODE* devInfo = NULL; 607d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban FT_STATUS ftStatus; 61e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang DWORD numDevs = 0; 62e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int i; 63e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int retCode = 0; 64e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 65e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ftStatus = FT_CreateDeviceInfoList(&numDevs); 66e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (ftStatus != FT_OK) { 67e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT_CreateDeviceInfoList failed: error code %d\n", ftStatus); 68e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 69e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 70e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 71e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang devInfo = calloc((size_t) numDevs, sizeof(FT_DEVICE_LIST_INFO_NODE)); 72e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (devInfo == NULL) { 73e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222 allocation failure.\n"); 74e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 75e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 76e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 77e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ftStatus = FT_GetDeviceInfoList(devInfo, &numDevs); 786b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_NOTICE, "FT_GetDeviceInfoList returned %d devices\n", numDevs); 79e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (ftStatus != FT_OK) { 80e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT_GetDeviceInfoList failed (error code %d)\n", (int) ftStatus); 81e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 82e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 836b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (numDevs < 2) { 846b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "No FT4222 devices connected.\n"); 856b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare goto init_exit; 866b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 877d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if(numDevs > 2) { 887d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "CNFMODE not supported. Valid modes are 0 or 3.\n"); 89e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 90e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 91e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 926b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // FIXME: Assumes just one physical FTDI device present 936b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare DWORD locationIdI2c = 0; 946b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare DWORD locationIdGpio = 0; 956b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (devInfo[0].Type == FT_DEVICE_4222H_0) 966b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare locationIdI2c = devInfo[0].LocId; 976b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (devInfo[1].Type == FT_DEVICE_4222H_0) 986b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare locationIdGpio = devInfo[1].LocId; 997d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 1006b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (locationIdI2c == 0) { 1016b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT_GetDeviceInfoList contains no I2C controllers\n"); 1026b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare goto init_exit; 1036b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 1047d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 1056b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (locationIdGpio == 0) { 1066b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT_GetDeviceInfoList contains no GPIO controllers\n"); 1076b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare goto init_exit; 1086b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 1096b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 1106b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ftStatus = FT_OpenEx((PVOID)(uintptr_t) locationIdI2c, FT_OPEN_BY_LOCATION, &ftHandleI2c); 1116b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (ftStatus != FT_OK) { 1126b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT_OpenEx failed (error %d)\n", (int) ftStatus); 1136b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare goto init_exit; 1147d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 1157d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 1166b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ftStatus = FT_OpenEx((PVOID)(uintptr_t) locationIdGpio, FT_OPEN_BY_LOCATION, &ftHandleGpio); 117e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (ftStatus != FT_OK) { 1186b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT_OpenEx failed (error %d)\n", (int) ftStatus); 1196b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare goto init_exit; 1206b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 1216b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 1226b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_SetSuspendOut(ftHandleGpio, 0); 1236b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_SetWakeUpInterrupt(ftHandleGpio, 0); 1246b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ftStatus = FT4222_GPIO_Init(ftHandleGpio, pinDirection); 1256b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (ftStatus != FT_OK) { 1266b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT4222_GPIO_Init failed (error %d)\n", (int) ftStatus); 127e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 128e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 129e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 130e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 1317d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // Tell the FT4222 to be an I2C Master by default on init. 1326b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandleI2c, bus_speed); 133e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 134e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status); 135e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 136e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 137e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 1386b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ft4222Status = FT4222_I2CMaster_Reset(ftHandleI2c); 139e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 140e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status); 141e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 142e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 143e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 1446b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare mraaStatus = MRAA_SUCCESS; 1456b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 146e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhanginit_exit: 147e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (devInfo != NULL) 1486b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare free(devInfo); 149e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (mraaStatus == MRAA_SUCCESS) 150e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_NOTICE, "mraa_ftdi_ft4222_init completed successfully\n"); 151e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraaStatus; 152e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 153e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 154e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 155e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_result_t 156e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_get_version(unsigned int* versionChip, unsigned int* versionLib) 157e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 1586b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (ftHandleI2c != NULL) { 159e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_Version ft4222Version; 1606b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS ft4222Status = FT4222_GetVersion(ftHandleI2c, &ft4222Version); 161e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK == ft4222Status) { 162e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang *versionChip = (unsigned int) ft4222Version.chipVersion; 163e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang *versionLib = (unsigned int) ft4222Version.dllVersion; 164e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_NOTICE, "FT4222_GetVersion %08X %08X\n", *versionChip, *versionLib); 165e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 166e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } else { 1676b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT4222_GetVersion failed (error %d)\n", (int) ft4222Status); 168e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_NO_RESOURCES; 169e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 170e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } else { 1716b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "Bad FT4222 handle\n"); 172e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_INVALID_HANDLE; 173e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 174e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 175e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 176e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 1776b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare/******************* Private I2C functions *******************/ 1786b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 179e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 180e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_internal(FT_HANDLE handle, uint8_t addr, uint8_t* data, int length) 181e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 182e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint16 bytesRead = 0; 183e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8 controllerStatus; 184e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // syslog(LOG_NOTICE, "FT4222_I2CMaster_Read(%#02X, %#02X)", addr, length); 185e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = FT4222_I2CMaster_Read(handle, addr, data, length, &bytesRead); 1866b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ft4222Status = FT4222_I2CMaster_GetStatus(ftHandleI2c, &controllerStatus); 187e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus)) { 1886b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT4222_I2CMaster_Read failed for address %#02x\n", addr); 1896b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_I2CMaster_Reset(handle); 190e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 191e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 192e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return bytesRead; 193e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 194e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 195e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 196e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_internal(FT_HANDLE handle, uint8_t addr, const uint8_t* data, int bytesToWrite) 197e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 198e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint16 bytesWritten = 0; 199e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8 controllerStatus; 200e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // syslog(LOG_NOTICE, "FT4222_I2CMaster_Write(%#02X, %#02X, %d)", addr, *data, bytesToWrite); 2016b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS ft4222Status = FT4222_I2CMaster_Write(handle, addr, (uint8_t*) data, bytesToWrite, &bytesWritten); 2026b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ft4222Status = FT4222_I2CMaster_GetStatus(ftHandleI2c, &controllerStatus); 203e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus)) { 2046b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare syslog(LOG_ERR, "FT4222_I2CMaster_Write failed address %#02x\n", addr); 2056b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_I2CMaster_Reset(handle); 206e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 207e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 208e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 209e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (bytesWritten != bytesToWrite) 210e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Write wrote %u of %u bytes.\n", bytesWritten, bytesToWrite); 211e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 212e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return bytesWritten; 213e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 214e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2156b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 2166b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare// Function detects known I2C I/O expanders and returns the number of GPIO pins on expander 2177d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanstatic int 218e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_detect_io_expander() 219e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 220e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t data; 2216b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if(mraa_ftdi_ft4222_i2c_read_internal(ftHandleI2c, PCA9672_ADDR, &data, 1) == 1) { 2226b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return PCA9672_PINS; 2237d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 2247d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 225e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 226e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 227e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2286b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic mraa_boolean_t 2296b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_is_internal_gpio(int pin) 230e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 2316b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return pin < numFt4222GpioPins; 2326b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare} 233e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2346b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 2356b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic mraa_result_t 2366b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beareftdi_ft4222_set_internal_gpio_dir(int pin, GPIO_Dir direction) 2376b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare{ 2386b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare pinDirection[pin] = direction; 2396b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (FT4222_GPIO_Init(ftHandleGpio, pinDirection) != FT4222_OK) 2406b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return MRAA_ERROR_UNSPECIFIED; 2416b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare else 2426b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return MRAA_SUCCESS; 2436b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare} 2446b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 2456b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare// Function detects known I2C switches and returns the number of busses. 2466b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare// On startup switch is disabled so default bus will be integrated i2c bus. 2476b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic int 2486b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_detect_i2c_switch() 2496b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare{ 2506b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t data; 2516b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if(mraa_ftdi_ft4222_i2c_read_internal(ftHandleI2c, PCA9545_ADDR, &data, 1) == 1) { 2526b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare data = 0; 2536b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return mraa_ftdi_ft4222_i2c_write_internal(ftHandleI2c, PCA9545_ADDR, &data, 1) == 1 ? PCA9545_BUSSES : 0; 254e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 2556b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return 0; 2566b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare} 257e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2586b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 2596b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic mraa_result_t 2606b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_i2c_select_bus(int bus) 2616b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare{ 2626b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (bus != currentI2cBus) { 2636b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t data; 2646b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (bus == 0) 2656b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare data = 0; 2666b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare else 2676b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare data = 1 << (bus-1); 2686b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_write_internal(ftHandleI2c, PCA9545_ADDR, &data, 1) == 1) 2696b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare currentI2cBus = bus; 2706b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare else 2716b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return MRAA_ERROR_UNSPECIFIED; 272e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 2736b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return MRAA_SUCCESS; 2746b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare} 275e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2766b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic int 2776b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_i2c_context_read(mraa_i2c_context dev, uint8_t* data, int length) 2786b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare{ 2796b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_select_bus(dev->busnum) == MRAA_SUCCESS) 2806b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, data, length); 2816b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare else 2826b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return 0; 283e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 284e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2856b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic int 2866b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_i2c_context_write(mraa_i2c_context dev, uint8_t* data, int length) 2876b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare{ 2886b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_select_bus(dev->busnum) == MRAA_SUCCESS) 2896b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return mraa_ftdi_ft4222_i2c_write_internal(dev->handle, dev->addr, data, length); 2906b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare else 2916b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return 0; 2926b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare} 2936b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 2946b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 2956b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic void 2966b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_sleep_ms(unsigned long mseconds) 2976b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare{ 2986b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare struct timespec sleepTime; 2996b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 3006b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sleepTime.tv_sec = mseconds / 1000; // Number of seconds 3016b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sleepTime.tv_nsec = (mseconds % 1000) * 1000000; // Convert fractional seconds to nanoseconds 3026b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 3036b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // Iterate nanosleep in a loop until the total sleep time is the original 3046b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // value of the seconds parameter 3056b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare while ((nanosleep(&sleepTime, &sleepTime) != 0) && (errno == EINTR)) 3066b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ; 3076b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare} 3086b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 3096b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearestatic unsigned int 3106b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_get_tick_count_ms() 3116b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare{ 3126b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare static unsigned int startTick = 0; 3136b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare unsigned int ticks; 3146b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare struct timeval now; 3156b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare gettimeofday(&now, NULL); 3166b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ticks = now.tv_sec * 1000; 3176b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ticks += now.tv_usec / 1000; 3186b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (startTick == 0) 3196b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare startTick = ticks; 3206b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return ticks - startTick; 3216b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare} 3226b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 3236b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 3246b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare/******************* I2C functions *******************/ 3256b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 326e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 327e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_init_bus_replace(mraa_i2c_context dev) 328e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 329e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Tell the FT4222 to be an I2C Master. 3306b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandleI2c, bus_speed); 331e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 332e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status); 333e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_NO_RESOURCES; 334e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 335e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 336e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Reset the I2CM registers to a known state. 3376b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare ft4222Status = FT4222_I2CMaster_Reset(ftHandleI2c); 338e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 339e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status); 340e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_NO_RESOURCES; 341e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 342e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 3437d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_NOTICE, "I2C interface enabled GPIO0 and GPIO1 will be unavailable.\n"); 3446b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare dev->handle = ftHandleI2c; 345e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->fh = -1; // We don't use file descriptors 346e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->funcs = I2C_FUNC_I2C; // Advertise minimal i2c support as per 347e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // https://www.kernel.org/doc/Documentation/i2c/functionality 348e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 349e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 350e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 351e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 352e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 353e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_frequency(mraa_i2c_context dev, mraa_i2c_mode_t mode) 354e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 355e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang switch (mode) { 356e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_I2C_STD: /**< up to 100Khz */ 357e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang bus_speed = 100; 358e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang break; 359e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang MRAA_I2C_FAST: /**< up to 400Khz */ 360e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang bus_speed = 400; 361e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang break; 362e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang MRAA_I2C_HIGH: /**< up to 3.4Mhz */ 363e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang bus_speed = 3400; 364e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang break; 365e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 3666b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return FT4222_I2CMaster_Init(ftHandleI2c, bus_speed) == FT4222_OK ? MRAA_SUCCESS : MRAA_ERROR_NO_RESOURCES; 367e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 368e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 369e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 370e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 371e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_address(mraa_i2c_context dev, uint8_t addr) 372e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 373e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->addr = (int) addr; 3746b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return MRAA_SUCCESS; 375e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 376e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 377e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 378e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 379e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read(mraa_i2c_context dev, uint8_t* data, int length) 380e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 381e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, data, length); 382e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 383e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 384e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic uint8_t 385e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_byte(mraa_i2c_context dev) 386e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 3877d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban uint8_t data; 3886b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_context_read(dev, &data, 1) == 1) 3897d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return data; 3907d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else 3917d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 392e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 393e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 394e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 395e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic uint16_t 396e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_word_data(mraa_i2c_context dev, uint8_t command) 397e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 3987d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban uint8_t buf[2]; 3997d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban uint16_t data; 4006b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_context_write(dev, &command, 1) != 1) 4017d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 4026b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_context_read(dev, buf, 2) != 2) 4037d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 4047d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban data = *(uint16_t*)buf; 4057d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return data; 406e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 407e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 408e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 409e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_bytes_data(mraa_i2c_context dev, uint8_t command, uint8_t* data, int length) 410e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 4116b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_context_write(dev, &command, 1) != 1) 4127d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 4136b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return mraa_ftdi_ft4222_i2c_context_read(dev, data, length); 414e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 415e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 416e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 417e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 418e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write(mraa_i2c_context dev, const uint8_t* data, int bytesToWrite) 419e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 4206b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint16 bytesWritten = mraa_ftdi_ft4222_i2c_context_write(dev, (uint8_t*)data, bytesToWrite); 421e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return bytesToWrite == bytesWritten ? MRAA_SUCCESS : MRAA_ERROR_INVALID_HANDLE; 422e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 423e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 424e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 425e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 426e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_byte(mraa_i2c_context dev, uint8_t data) 427e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 428e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_write(dev, &data, 1); 429e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 430e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 431e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 432e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic uint8_t 433e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_byte_data(mraa_i2c_context dev, uint8_t command) 434e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 435e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang const uint8_t reg_addr = command; 436e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t data; 437e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (mraa_ftdi_ft4222_i2c_write(dev, ®_addr, 1) != MRAA_SUCCESS) 438e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 439e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (mraa_ftdi_ft4222_i2c_read(dev, &data, 1) != 1) 440e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 441e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return data; 442e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 443e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 444e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 445e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_byte_data(mraa_i2c_context dev, const uint8_t data, const uint8_t command) 446e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 447e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t buf[2]; 448e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[0] = command; 449e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[1] = data; 450e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_write(dev, buf, 2); 451e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 452e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 453e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 454e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_word_data(mraa_i2c_context dev, const uint16_t data, const uint8_t command) 455e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 456e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t buf[3]; 457e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[0] = command; 458e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[1] = (uint8_t) data; 459e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[2] = (uint8_t)(data >> 8); 460e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_write(dev, buf, 3); 461e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 462e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 463e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 464e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_stop(mraa_i2c_context dev) 465e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 466e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 467e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 468e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 469e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang/******************* GPIO functions *******************/ 470e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 471e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 4726b1611a178516c059b80b1fecb9bbea070a00d0dBruce Bearemraa_ftdi_ft4222_gpio_init_internal_replace(mraa_gpio_context dev, int pin) 473e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 4746b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare dev->phy_pin = (pin < numFt4222GpioPins) ? pin : pin - numFt4222GpioPins; 4756b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (pin < 2) { 4767d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_NOTICE, "Closing I2C interface to enable GPIO%d\n", pin); 4777d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 4787d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban /* Replace with call to SPI init when SPI is fully implemented */ 4796b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS ft4222Status = FT4222_SPIMaster_Init(ftHandleSpi, SPI_IO_SINGLE, CLK_DIV_4, CLK_IDLE_HIGH, CLK_LEADING, 0x01); 4807d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_OK != ft4222Status){ 4817d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "Failed to close I2C interface and start SPI (error %d)!\n", ft4222Status); 4827d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_NO_RESOURCES; 4837d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4847d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 485e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 486e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 487e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 488e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 489e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_mode_replace(mraa_gpio_context dev, mraa_gpio_mode_t mode) 490e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 491e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 492e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 493e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 494e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 495e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_edge_mode_replace(mraa_gpio_context dev, mraa_gpio_edge_t mode) 496e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 497e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 498e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 499e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 500e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 501e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_read_replace(mraa_gpio_context dev) 502e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 5036b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t pin = dev->pin; 5046b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_is_internal_gpio(pin)) { 5057d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // FTDI GPIO 5066b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare BOOL value; 5076b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS ft4222Status = FT4222_GPIO_Read(ftHandleGpio, dev->phy_pin, &value); 5087d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_OK != ft4222Status) { 5097d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "FT4222_GPIO_Read failed (error %d)!\n", ft4222Status); 5107d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return -1; 5117d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 5127d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return value; 5137d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 5147d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else { 5157d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // Expander GPIO 5166b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t mask = 1 << dev->phy_pin; 5176b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t value; 5186b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_read_internal(ftHandleI2c, PCA9672_ADDR, &value, 1) != 1) 5197d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return -1; 5207d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return (value & mask) == mask; 5217d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 522e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 523e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 524e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 525e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 526e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_write_replace(mraa_gpio_context dev, int write_value) 527e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 5286b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t pin = dev->pin; 5296b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_is_internal_gpio(pin)) { 5307d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // FTDI GPIO 5316b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS ft4222Status = FT4222_GPIO_Write(ftHandleGpio, dev->phy_pin, write_value); 5327d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_OK != ft4222Status) { 5337d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "FT4222_GPIO_Write failed (error %d)!\n", ft4222Status); 5347d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5357d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 5367d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 5377d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else { 5387d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // Expander GPIO 5396b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t mask = 1 << dev->phy_pin; 5406b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint8_t value; 5416b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_read_internal(ftHandleI2c, PCA9672_ADDR, &value, 1) != 1) 5427d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5437d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (write_value == 1) 5447d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban value |= mask; 5457d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else 5467d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban value &= (~mask); 5476b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_i2c_write_internal(ftHandleI2c, PCA9672_ADDR, &value, 1) != 1) 5487d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5497d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 550e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 551e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 552e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 553e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 554e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_dir_replace(mraa_gpio_context dev, mraa_gpio_dir_t dir) 555e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 556e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang switch (dir) { 557e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_GPIO_IN: 5586b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_is_internal_gpio(dev->pin)) 5596b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return ftdi_ft4222_set_internal_gpio_dir(dev->phy_pin, GPIO_INPUT); 5606b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare else 5616b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return mraa_ftdi_ft4222_gpio_write_replace(dev, 1); 5627d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban case MRAA_GPIO_OUT: 5636b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_is_internal_gpio(dev->pin)) 5646b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return ftdi_ft4222_set_internal_gpio_dir(dev->phy_pin, GPIO_OUTPUT); 5656b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare else 5666b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare return MRAA_SUCCESS; 567e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_GPIO_OUT_HIGH: 5686b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_is_internal_gpio(dev->pin)) { 5696b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (ftdi_ft4222_set_internal_gpio_dir(dev->phy_pin, GPIO_OUTPUT) != MRAA_SUCCESS) 5707d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5717d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 572e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_gpio_write_replace(dev, 1); 573e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_GPIO_OUT_LOW: 5746b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (mraa_ftdi_ft4222_is_internal_gpio(dev->pin)) { 5756b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (ftdi_ft4222_set_internal_gpio_dir(dev->phy_pin, GPIO_OUTPUT) != MRAA_SUCCESS) 5767d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5777d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 578e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_gpio_write_replace(dev, 0); 579e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang default: 5807d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_INVALID_PARAMETER; 581e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 582e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 583e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 584e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 585e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic void* 586e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_interrupt_handler_replace(mraa_gpio_context dev) 587e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 5886b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#ifdef USE_FT4222_GPIO_TRIGGER 5896b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // FIXME: Use big buffer; shouldn't be more than this many events to read 5906b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare GPIO_Trigger event_buf[256]; 5916b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare int prev_level = mraa_ftdi_ft4222_gpio_read_replace(dev); 5926b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare while (1) { 5936b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint16 num_events = 0; 5946b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_STATUS status = FT4222_GPIO_GetTriggerStatus(ftHandleGpio, GPIO_PORT_IO_STATUS, &num_events); 5956b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (status != FT4222_OK) 5966b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare printf("FT4222_GPIO_GetTriggerStatus failed with code %d\n", status); 5976b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare printf("%u: FT4222_GPIO_GetTriggerStatus Events = %d\n", mraa_ftdi_ft4222_get_tick_count_ms(), num_events); 5986b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (num_events > 0) { 5996b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare int level = mraa_ftdi_ft4222_gpio_read_replace(dev); 6006b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare uint16 num_events_read; 6016b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare FT4222_GPIO_ReadTriggerQueue(ftHandleGpio, GPIO_PORT_IO_STATUS, event_buf, num_events, &num_events_read); 6026b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // printf("%u: FT4222_GPIO_ReadTriggerQueue Events= %d\n", mraa_ftdi_ft4222_get_tick_count_ms(), num_events_read); 6036b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare printf("%u: level = %d\n", mraa_ftdi_ft4222_get_tick_count_ms(), level); 6046b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare if (level != prev_level) { 6056b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare dev->isr(dev->isr_args); 6066b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare prev_level = level; 6076b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 6086b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 6096b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 6106b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare mraa_ftdi_ft4222_sleep_ms(20); 6116b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // int level = mraa_ftdi_ft4222_gpio_read_replace(dev); 6126b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // printf("level = %d\n", level); 6136b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 6146b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#else 615e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int prev_level = mraa_ftdi_ft4222_gpio_read_replace(dev); 616e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang while (1) { 617e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int level = mraa_ftdi_ft4222_gpio_read_replace(dev); 6187d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // MRAA_GPIO_EDGE_BOTH 619e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (level != prev_level) { 620e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->isr(dev->isr_args); 621e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang prev_level = level; 622e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 623e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_ftdi_ft4222_sleep_ms(100); 624e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 6256b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare#endif 626e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 627e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 628e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 629e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic void 630e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_populate_i2c_func_table(mraa_adv_func_t* func_table) 631e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 632e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_init_bus_replace = &mraa_ftdi_ft4222_i2c_init_bus_replace; 633e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_set_frequency_replace = &mraa_ftdi_ft4222_i2c_frequency; 634e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_address_replace = &mraa_ftdi_ft4222_i2c_address; 635e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_replace = &mraa_ftdi_ft4222_i2c_read; 636e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_byte_replace = &mraa_ftdi_ft4222_i2c_read_byte; 637e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_byte_data_replace = &mraa_ftdi_ft4222_i2c_read_byte_data; 638e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_word_data_replace = &mraa_ftdi_ft4222_i2c_read_word_data; 639e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_bytes_data_replace = &mraa_ftdi_ft4222_i2c_read_bytes_data; 640e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_replace = &mraa_ftdi_ft4222_i2c_write; 641e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_byte_replace = &mraa_ftdi_ft4222_i2c_write_byte; 642e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_byte_data_replace = &mraa_ftdi_ft4222_i2c_write_byte_data; 643e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_word_data_replace = &mraa_ftdi_ft4222_i2c_write_word_data; 644e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_stop_replace = &mraa_ftdi_ft4222_i2c_stop; 645e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 646e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 647e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic void 648e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_populate_gpio_func_table(mraa_adv_func_t* func_table) 649e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 650e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_init_internal_replace = &mraa_ftdi_ft4222_gpio_init_internal_replace; 651e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_mode_replace = &mraa_ftdi_ft4222_gpio_mode_replace; 652e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_edge_mode_replace = &mraa_ftdi_ft4222_gpio_edge_mode_replace; 653e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_dir_replace = &mraa_ftdi_ft4222_gpio_dir_replace; 654e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_read_replace = &mraa_ftdi_ft4222_gpio_read_replace; 655e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_write_replace = &mraa_ftdi_ft4222_gpio_write_replace; 656e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_interrupt_handler_replace = &mraa_ftdi_ft4222_gpio_interrupt_handler_replace; 657e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 658e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 659e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 660e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_board_t* 661e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222() 662e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 663e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_board_t* sub_plat = (mraa_board_t*) calloc(1, sizeof(mraa_board_t)); 664e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (sub_plat == NULL) 665e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 6667d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban numI2cGpioExpanderPins = mraa_ftdi_ft4222_detect_io_expander(); 667e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int pinIndex = 0; 6686b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare int numUsbGpio = numFt4222GpioPins + numI2cGpioExpanderPins; 6696b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare int numI2cBusses = 1 + mraa_ftdi_ft4222_detect_i2c_switch(); 6706b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare int numUsbPins = numUsbGpio + 2 * (numI2cBusses-1); // Add SDA and SCL for each i2c switch bus 6716b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare mraa_pincapabilities_t pinCapsI2c = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 1, 0, 0 }; 6726b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare mraa_pincapabilities_t pinCapsI2cGpio = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }; 6736b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare mraa_pincapabilities_t pinCapsGpio = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }; 6746b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 675e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->platform_name = PLATFORM_NAME; 676e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->phy_pin_count = numUsbPins; 6776b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->gpio_count = numUsbGpio; 6786b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare mraa_pininfo_t* pins = (mraa_pininfo_t*) calloc(numUsbPins,sizeof(mraa_pininfo_t)); 679e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (pins == NULL) { 680e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 681e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 682e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins = pins; 683e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 684e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int bus = 0; 6856b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->i2c_bus_count = numI2cBusses; 686e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->def_i2c_bus = bus; 687e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->i2c_bus[bus].bus_id = bus; 688e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 6897d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // I2c pins (these are virtual, entries are required to configure i2c layer) 6906b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // We currently assume that GPIO 0/1 are reserved for i2c operation 6916b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare strncpy(sub_plat->pins[pinIndex].name, "IGPIO0/SCL0", MRAA_PIN_NAME_SIZE); 6926b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].capabilites = pinCapsI2cGpio; 6937d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 6947d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 695e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins[pinIndex].i2c.mux_total = 0; 6967d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->i2c_bus[bus].scl = pinIndex; 697e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang pinIndex++; 6986b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare strncpy(sub_plat->pins[pinIndex].name, "IGPIO1/SDA0", MRAA_PIN_NAME_SIZE); 6996b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].capabilites = pinCapsI2cGpio; 7007d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 7017d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 702e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins[pinIndex].i2c.mux_total = 0; 7037d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->i2c_bus[bus].sda = pinIndex; 7047d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinIndex++; 7057d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 7067d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // FTDI4222 gpio 7076b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare strncpy(sub_plat->pins[pinIndex].name, "INT-GPIO2", MRAA_PIN_NAME_SIZE); 7087d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].capabilites = pinCapsGpio; 7097d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 7107d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 7117d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinIndex++; 7126b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare strncpy(sub_plat->pins[pinIndex].name, "INT-GPIO3", MRAA_PIN_NAME_SIZE); 7137d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].capabilites = pinCapsGpio; 7147d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 7157d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 7166b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare pinIndex++; 7176b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 7186b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // Virtual gpio pins on i2c I/O expander. 7196b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare int i; 7206b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare for (i = 0; i < numI2cGpioExpanderPins; ++i) { 7216b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare snprintf(sub_plat->pins[pinIndex].name, MRAA_PIN_NAME_SIZE, "EXP-GPIO%d", i); 7226b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].capabilites = pinCapsGpio; 7236b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 7246b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].gpio.mux_total = 0; 7256b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare pinIndex++; 7266b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 7276b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 7286b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare // Now add any extra i2c busses behind i2c switch 7296b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare for (bus = 1; bus < numI2cBusses; ++bus) { 7306b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->i2c_bus[bus].bus_id = bus; 7316b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].i2c.mux_total = 0; 7326b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare snprintf(sub_plat->pins[pinIndex].name, MRAA_PIN_NAME_SIZE, "SDA%d", bus); 7336b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].capabilites = pinCapsI2c; 7346b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->i2c_bus[bus].sda = pinIndex; 7356b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare pinIndex++; 7366b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare snprintf(sub_plat->pins[pinIndex].name, MRAA_PIN_NAME_SIZE, "SCL%d", bus); 7376b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].capabilites = pinCapsI2c; 7386b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->pins[pinIndex].i2c.mux_total = 0; 7396b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare sub_plat->i2c_bus[bus].scl = pinIndex; 7406b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare pinIndex++; 7416b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare } 7426b1611a178516c059b80b1fecb9bbea070a00d0dBruce Beare 743e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 744e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Set override functions 745e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_adv_func_t* func_table = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t)); 746e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (func_table == NULL) { 747e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 748e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 749e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_ftdi_ft4222_populate_i2c_func_table(func_table); 7507d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban mraa_ftdi_ft4222_populate_gpio_func_table(func_table); 751e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 752e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->adv_func = func_table; 753e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return sub_plat; 754e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 755