ftdi_ft4222.c revision 7d3978fad94b70b4cb0dba9231b30870022f8563
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> 28e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include <errno.h> 29e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "linux/i2c-dev.h" 30e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "common.h" 31e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "ftd2xx.h" 32e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "libft4222.h" 33e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#include "usb/ftdi_ft4222.h" 34e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 35e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#define PLATFORM_NAME "FTDI FT4222" 36e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#define I2CM_ERROR(status) (((status) &0x02) != 0) 37e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang#define PCA9672_ADDR 0x20 38e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 39e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 407d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanstatic FT_HANDLE ftHandleGPIO = (FT_HANDLE) NULL; //GPIO Handle 417d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanstatic FT_HANDLE ftHandle = (FT_HANDLE) NULL; //I2C/SPI Handle 427d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanstatic GPIO_Dir pinDirection[] = {GPIO_OUTPUT, GPIO_OUTPUT, GPIO_OUTPUT, GPIO_OUTPUT}; 43e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int bus_speed = 400; 447d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanstatic int numI2cGpioExpanderPins; 45e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 46e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_result_t 47e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_init() 48e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 49e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_result_t mraaStatus = MRAA_SUCCESS; 50e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT_DEVICE_LIST_INFO_NODE* devInfo = NULL; 517d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban FT_STATUS ftStatus; 52e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang DWORD numDevs = 0; 53e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int i; 54e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int retCode = 0; 55e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 56e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ftStatus = FT_CreateDeviceInfoList(&numDevs); 57e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (ftStatus != FT_OK) { 58e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT_CreateDeviceInfoList failed: error code %d\n", ftStatus); 59e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 60e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 61e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 62e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 63e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (numDevs == 0) { 64e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "No FT4222 devices connected.\n"); 65e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 66e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 67e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 68e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang devInfo = calloc((size_t) numDevs, sizeof(FT_DEVICE_LIST_INFO_NODE)); 69e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (devInfo == NULL) { 70e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222 allocation failure.\n"); 71e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 72e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 73e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 74e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 75e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ftStatus = FT_GetDeviceInfoList(devInfo, &numDevs); 76e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (ftStatus != FT_OK) { 77e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT_GetDeviceInfoList failed (error code %d)\n", (int) ftStatus); 78e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 79e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 80e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 81e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 82e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang /* 83e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_Version ft4222Version; 84e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = FT4222_GetVersion(ftHandle, &ft4222Version); 85e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK == ft4222Status){ 86e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_NOTICE, "FT4222_GetVersion %08X %08X\n", ft4222Version.chipVersion, 87e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ft4222Version.dllVersion); 88e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } else 89e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_GetVersion failed with code %d", ft4222Status); 90e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang */ 91e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 92e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_NOTICE, "FT_GetDeviceInfoList returned %d devices\n", numDevs); 937d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 947d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if(numDevs > 2) { 957d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "CNFMODE not supported. Valid modes are 0 or 3.\n"); 96e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 97e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 98e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 99e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 1007d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // CNFMODE 0, GPIO interface available. 1017d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if(numDevs = 2) { 1027d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban ftStatus = FT_OpenEx((PVOID)(uintptr_t) devInfo[1].LocId, FT_OPEN_BY_LOCATION, &ftHandleGPIO); 1037d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (ftStatus != FT_OK) { 1047d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "FT_OpenEx GPIO handle failed (error %d)\n", (int) ftStatus); 1057d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban mraaStatus = MRAA_ERROR_NO_RESOURCES; 1067d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban goto init_exit; 1077d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 1087d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 1097d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // Disable Suspend and Wake on GPIO2 & GPIO3 1107d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban FT4222_SetSuspendOut(ftHandleGPIO, 0); 1117d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban FT4222_SetWakeUpInterrupt(ftHandleGPIO, 0); 1127d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 1137d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban ftStatus = FT4222_GPIO_Init(ftHandleGPIO, pinDirection); 1147d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (ftStatus != FT_OK) { 1157d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "FT4222_GPIO_Init failed (error %d)\n", (int) ftStatus); 1167d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban mraaStatus = MRAA_ERROR_NO_RESOURCES; 1177d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban goto init_exit; 1187d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 1197d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 1207d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 1217d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // I2C or SPI interface. 1227d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban ftStatus = FT_OpenEx((PVOID)(uintptr_t) devInfo[0].LocId, FT_OPEN_BY_LOCATION, &ftHandle); 123e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (ftStatus != FT_OK) { 1247d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "FT_OpenEx I2C handle failed (error %d)\n", (int) ftStatus); 125e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 126e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 127e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 128e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 1297d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // Tell the FT4222 to be an I2C Master by default on init. 130e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandle, bus_speed); 131e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 132e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status); 133e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 134e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 135e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 136e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 137e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Reset the I2CM registers to a known state. 138e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ft4222Status = FT4222_I2CMaster_Reset(ftHandle); 139e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 140e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status); 141e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraaStatus = MRAA_ERROR_NO_RESOURCES; 142e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang goto init_exit; 143e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 144e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 145e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhanginit_exit: 146e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (devInfo != NULL) 147e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ; 148e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 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{ 158e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (ftHandle != NULL) { 159e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_Version ft4222Version; 160e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = FT4222_GetVersion(ftHandle, &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 { 167e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "libmraa: FT4222_GetVersion failed (error %d)\n", (int) ft4222Status); 168e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_NO_RESOURCES; 169e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 170e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } else { 171e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "libmraa: bad FT4222 handle\n"); 172e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_INVALID_HANDLE; 173e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 174e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 175e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 176e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 177e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 178e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_internal(FT_HANDLE handle, uint8_t addr, uint8_t* data, int length) 179e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 180e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint16 bytesRead = 0; 181e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8 controllerStatus; 182e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // syslog(LOG_NOTICE, "FT4222_I2CMaster_Read(%#02X, %#02X)", addr, length); 183e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = FT4222_I2CMaster_Read(handle, addr, data, length, &bytesRead); 184e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ft4222Status = FT4222_I2CMaster_GetStatus(ftHandle, &controllerStatus); 185e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus)) { 186e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Read failed (error %d)\n", (int) ft4222Status); 187e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 188e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 189e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return bytesRead; 190e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 191e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 192e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 193e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_internal(FT_HANDLE handle, uint8_t addr, const uint8_t* data, int bytesToWrite) 194e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 195e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint16 bytesWritten = 0; 196e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8 controllerStatus; 197e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // syslog(LOG_NOTICE, "FT4222_I2CMaster_Write(%#02X, %#02X, %d)", addr, *data, bytesToWrite); 198e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = 199e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_I2CMaster_Write(handle, addr, (uint8_t*) data, bytesToWrite, &bytesWritten); 200e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ft4222Status = FT4222_I2CMaster_GetStatus(ftHandle, &controllerStatus); 201e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus)) { 202e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Write failed (error %d)\n", (int) ft4222Status); 203e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 204e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 205e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 206e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (bytesWritten != bytesToWrite) 207e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Write wrote %u of %u bytes.\n", bytesWritten, bytesToWrite); 208e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 209e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return bytesWritten; 210e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 211e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2127d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban// Function detects known I2C expanders and returns the number of GPIO pins on expander 2137d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanstatic int 214e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_detect_io_expander() 215e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 216e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t data; 2177d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if(mraa_ftdi_ft4222_i2c_read_internal(ftHandle, PCA9672_ADDR, &data, 1) == 1) { 2187d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 8; 2197d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 2207d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 221e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 222e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 223e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 224e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang/******************* I2C functions *******************/ 2257d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban// Function not currently mapped or used since we have virtual pin definitions 226e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_i2c_context 2277d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serbanmraa_ftdi_ft4222_i2c_init_raw_replace(unsigned int bus) 228e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 229e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Tell the FT4222 to be an I2C Master. 230e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandle, bus_speed); 231e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 232e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status); 233e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 234e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 235e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 236e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Reset the I2CM registers to a known state. 237e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ft4222Status = FT4222_I2CMaster_Reset(ftHandle); 238e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 239e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status); 240e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 241e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 242e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 243e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_i2c_context dev = (mraa_i2c_context) malloc(sizeof(struct _i2c)); 244e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (dev == NULL) { 245e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_CRIT, "i2c: Failed to allocate memory for context"); 246e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 247e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 248e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 249e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->handle = ftHandle; 250e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->fh = -1; // We don't use file descriptors 251e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->funcs = I2C_FUNC_I2C; // Advertise minimal i2c support as per 252e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // https://www.kernel.org/doc/Documentation/i2c/functionality 253e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return dev; 254e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 255e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 256e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 257e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_init_bus_replace(mraa_i2c_context dev) 258e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 259e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Tell the FT4222 to be an I2C Master. 260e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandle, 400); 261e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 262e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status); 263e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_NO_RESOURCES; 264e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 265e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 266e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Reset the I2CM registers to a known state. 267e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ft4222Status = FT4222_I2CMaster_Reset(ftHandle); 268e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (FT4222_OK != ft4222Status) { 269e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status); 270e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_ERROR_NO_RESOURCES; 271e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 272e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 2737d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_NOTICE, "I2C interface enabled GPIO0 and GPIO1 will be unavailable.\n"); 2747d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 275e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->handle = ftHandle; 276e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->fh = -1; // We don't use file descriptors 277e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->funcs = I2C_FUNC_I2C; // Advertise minimal i2c support as per 278e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // https://www.kernel.org/doc/Documentation/i2c/functionality 279e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 280e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 281e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 282e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 283e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 284e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_frequency(mraa_i2c_context dev, mraa_i2c_mode_t mode) 285e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 286e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang switch (mode) { 287e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_I2C_STD: /**< up to 100Khz */ 288e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang bus_speed = 100; 289e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang break; 290e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang MRAA_I2C_FAST: /**< up to 400Khz */ 291e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang bus_speed = 400; 292e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang break; 293e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang MRAA_I2C_HIGH: /**< up to 3.4Mhz */ 294e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang bus_speed = 3400; 295e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang break; 296e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 297e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 298e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 299e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 300e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 301e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 302e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_address(mraa_i2c_context dev, uint8_t addr) 303e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 304e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->addr = (int) addr; 305e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return FT4222_I2CMaster_Init(ftHandle, bus_speed) == FT4222_OK ? MRAA_SUCCESS : MRAA_ERROR_NO_RESOURCES; 306e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 307e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 308e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 309e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 310e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read(mraa_i2c_context dev, uint8_t* data, int length) 311e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 312e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, data, length); 313e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 314e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 315e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic uint8_t 316e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_byte(mraa_i2c_context dev) 317e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 3187d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban uint8_t data; 3197d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, &data, 1) == 1) 3207d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return data; 3217d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else 3227d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 323e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 324e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 325e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 326e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic uint16_t 327e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_word_data(mraa_i2c_context dev, uint8_t command) 328e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 3297d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban uint8_t buf[2]; 3307d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban uint16_t data; 3317d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (mraa_ftdi_ft4222_i2c_write_internal(dev->handle, dev->addr, &command, 1) != 1) 3327d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 3337d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, buf, 2) != 2) 3347d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 3357d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban data = *(uint16_t*)buf; 3367d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return data; 337e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 338e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 339e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 340e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_bytes_data(mraa_i2c_context dev, uint8_t command, uint8_t* data, int length) 341e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 3427d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (mraa_ftdi_ft4222_i2c_write_internal(dev->handle, dev->addr, &command, 1) != 1) 3437d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return 0; 3447d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return mraa_ftdi_ft4222_i2c_read_internal(dev->handle, dev->addr, data, length); 345e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 346e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 347e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 348e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 349e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write(mraa_i2c_context dev, const uint8_t* data, int bytesToWrite) 350e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 351e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint16 bytesWritten = mraa_ftdi_ft4222_i2c_write_internal(dev->handle, dev->addr, data, bytesToWrite); 352e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return bytesToWrite == bytesWritten ? MRAA_SUCCESS : MRAA_ERROR_INVALID_HANDLE; 353e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 354e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 355e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 356e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 357e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_byte(mraa_i2c_context dev, uint8_t data) 358e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 359e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_write(dev, &data, 1); 360e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 361e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 362e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 363e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic uint8_t 364e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_read_byte_data(mraa_i2c_context dev, uint8_t command) 365e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 366e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang const uint8_t reg_addr = command; 367e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t data; 368e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (mraa_ftdi_ft4222_i2c_write(dev, ®_addr, 1) != MRAA_SUCCESS) 369e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 370e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (mraa_ftdi_ft4222_i2c_read(dev, &data, 1) != 1) 371e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return 0; 372e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return data; 373e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 374e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 375e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 376e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_byte_data(mraa_i2c_context dev, const uint8_t data, const uint8_t command) 377e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 378e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t buf[2]; 379e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[0] = command; 380e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[1] = data; 381e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_write(dev, buf, 2); 382e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 383e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 384e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 385e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_write_word_data(mraa_i2c_context dev, const uint16_t data, const uint8_t command) 386e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 387e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t buf[3]; 388e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[0] = command; 389e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[1] = (uint8_t) data; 390e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang buf[2] = (uint8_t)(data >> 8); 391e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_i2c_write(dev, buf, 3); 392e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 393e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 394e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 395e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_i2c_stop(mraa_i2c_context dev) 396e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 397e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 398e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 399e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 400e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang/******************* GPIO functions *******************/ 401e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 402e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 403e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_init_internal_replace(int pin) 404e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 4057d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if ((pin - numI2cGpioExpanderPins) == 0 || (pin - numI2cGpioExpanderPins) == 1) { 4067d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_NOTICE, "Closing I2C interface to enable GPIO%d\n", pin); 4077d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 4087d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban /* Replace with call to SPI init when SPI is fully implemented */ 4097d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban FT4222_STATUS ft4222Status = FT4222_SPIMaster_Init(ftHandle, SPI_IO_SINGLE, CLK_DIV_4, CLK_IDLE_HIGH, CLK_LEADING, 0x01); 4107d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_OK != ft4222Status){ 4117d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "Failed to close I2C interface and start SPI (error %d)!\n", ft4222Status); 4127d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_NO_RESOURCES; 4137d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4147d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 415e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 416e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 417e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 418e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 419e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_mode_replace(mraa_gpio_context dev, mraa_gpio_mode_t mode) 420e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 421e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 422e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 423e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 424e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 425e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_edge_mode_replace(mraa_gpio_context dev, mraa_gpio_edge_t mode) 426e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 427e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 428e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 429e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 430e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic int 431e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_read_replace(mraa_gpio_context dev) 432e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 433e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t pin = dev->phy_pin; 434e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t mask = 1 << pin; 435e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t value; 4367d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 4377d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if(pin >= numI2cGpioExpanderPins) { 4387d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // FTDI GPIO 4397d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban FT4222_STATUS ft4222Status = FT4222_GPIO_Read(ftHandleGPIO, (pin - numI2cGpioExpanderPins), (BOOL*)&value); 4407d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_OK != ft4222Status) { 4417d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "FT4222_GPIO_Read failed (error %d)!\n", ft4222Status); 4427d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return -1; 4437d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4447d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return value; 4457d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4467d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else { 4477d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // Expander GPIO 4487d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (mraa_ftdi_ft4222_i2c_read_internal(ftHandle, PCA9672_ADDR, &value, 1) != 1) 4497d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return -1; 4507d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return (value & mask) == mask; 4517d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 452e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 453e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 454e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 455e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 456e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_write_replace(mraa_gpio_context dev, int write_value) 457e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 458e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t pin = dev->phy_pin; 459e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t mask = 1 << pin; 460e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang uint8_t value; 4617d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 4627d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if(pin >= numI2cGpioExpanderPins) { 4637d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // FTDI GPIO 4647d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban FT4222_STATUS ft4222Status = FT4222_GPIO_Write(ftHandleGPIO, (pin - numI2cGpioExpanderPins), write_value); 4657d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_OK != ft4222Status) { 4667d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban syslog(LOG_ERR, "FT4222_GPIO_Write failed (error %d)!\n", ft4222Status); 4677d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 4687d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4697d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4707d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else { 4717d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // Expander GPIO 4727d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (mraa_ftdi_ft4222_i2c_read_internal(ftHandle, PCA9672_ADDR, &value, 1) != 1) 4737d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 4747d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (write_value == 1) 4757d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban value |= mask; 4767d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban else 4777d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban value &= (~mask); 4787d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (mraa_ftdi_ft4222_i2c_write_internal(ftHandle, PCA9672_ADDR, &value, 1) != 1) 4797d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 4807d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4817d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 482e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return MRAA_SUCCESS; 483e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 484e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 485e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic mraa_result_t 486e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_dir_replace(mraa_gpio_context dev, mraa_gpio_dir_t dir) 487e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 488e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang switch (dir) { 489e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_GPIO_IN: 4907d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (dev->phy_pin >= numI2cGpioExpanderPins) { 4917d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinDirection[dev->phy_pin - numI2cGpioExpanderPins] = GPIO_INPUT; 4927d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_GPIO_Init(ftHandleGPIO, pinDirection) != FT4222_OK) 4937d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 4947d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 4957d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_SUCCESS; 4967d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban case MRAA_GPIO_OUT: 4977d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (dev->phy_pin >= numI2cGpioExpanderPins) { 4987d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinDirection[dev->phy_pin - numI2cGpioExpanderPins] = GPIO_OUTPUT; 4997d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_GPIO_Init(ftHandleGPIO, pinDirection) != FT4222_OK) 5007d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5017d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 5027d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_SUCCESS; 503e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_GPIO_OUT_HIGH: 5047d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (dev->phy_pin >= numI2cGpioExpanderPins) { 5057d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinDirection[dev->phy_pin - numI2cGpioExpanderPins] = GPIO_OUTPUT; 5067d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_GPIO_Init(ftHandleGPIO, pinDirection) != FT4222_OK) 5077d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5087d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 509e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_gpio_write_replace(dev, 1); 510e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang case MRAA_GPIO_OUT_LOW: 5117d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (dev->phy_pin >= numI2cGpioExpanderPins) { 5127d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinDirection[dev->phy_pin - numI2cGpioExpanderPins] = GPIO_OUTPUT; 5137d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban if (FT4222_GPIO_Init(ftHandleGPIO, pinDirection) != FT4222_OK) 5147d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_UNSPECIFIED; 5157d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban } 516e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return mraa_ftdi_ft4222_gpio_write_replace(dev, 0); 517e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang default: 5187d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban return MRAA_ERROR_INVALID_PARAMETER; 519e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 520e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 521e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 522e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic void 523e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_sleep_ms(unsigned long mseconds) 524e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 525e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang struct timespec sleepTime; 526e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 527e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sleepTime.tv_sec = mseconds / 1000; // Number of seconds 528e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sleepTime.tv_nsec = (mseconds % 1000) * 1000000; // Convert fractional seconds to nanoseconds 529e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 530e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Iterate nanosleep in a loop until the total sleep time is the original 531e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // value of the seconds parameter 532e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang while ((nanosleep(&sleepTime, &sleepTime) != 0) && (errno == EINTR)) 533e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang ; 534e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 535e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 536e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic void* 537e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_gpio_interrupt_handler_replace(mraa_gpio_context dev) 538e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 539e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int prev_level = mraa_ftdi_ft4222_gpio_read_replace(dev); 540e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang while (1) { 541e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int level = mraa_ftdi_ft4222_gpio_read_replace(dev); 5427d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // MRAA_GPIO_EDGE_BOTH 543e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (level != prev_level) { 544e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang dev->isr(dev->isr_args); 545e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang prev_level = level; 546e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 547e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // printf("mraa_ftdi_ft4222_gpio_interrupt_handler_replace\n"); 548e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_ftdi_ft4222_sleep_ms(100); 549e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 550e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 551e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 552e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 553e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic void 554e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_populate_i2c_func_table(mraa_adv_func_t* func_table) 555e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 556e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_init_bus_replace = &mraa_ftdi_ft4222_i2c_init_bus_replace; 557e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_set_frequency_replace = &mraa_ftdi_ft4222_i2c_frequency; 558e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_address_replace = &mraa_ftdi_ft4222_i2c_address; 559e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_replace = &mraa_ftdi_ft4222_i2c_read; 560e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_byte_replace = &mraa_ftdi_ft4222_i2c_read_byte; 561e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_byte_data_replace = &mraa_ftdi_ft4222_i2c_read_byte_data; 562e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_word_data_replace = &mraa_ftdi_ft4222_i2c_read_word_data; 563e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_read_bytes_data_replace = &mraa_ftdi_ft4222_i2c_read_bytes_data; 564e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_replace = &mraa_ftdi_ft4222_i2c_write; 565e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_byte_replace = &mraa_ftdi_ft4222_i2c_write_byte; 566e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_byte_data_replace = &mraa_ftdi_ft4222_i2c_write_byte_data; 567e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_write_word_data_replace = &mraa_ftdi_ft4222_i2c_write_word_data; 568e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->i2c_stop_replace = &mraa_ftdi_ft4222_i2c_stop; 569e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 570e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 571e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangstatic void 572e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222_populate_gpio_func_table(mraa_adv_func_t* func_table) 573e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 574e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_init_internal_replace = &mraa_ftdi_ft4222_gpio_init_internal_replace; 575e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_mode_replace = &mraa_ftdi_ft4222_gpio_mode_replace; 576e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_edge_mode_replace = &mraa_ftdi_ft4222_gpio_edge_mode_replace; 577e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_dir_replace = &mraa_ftdi_ft4222_gpio_dir_replace; 578e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_read_replace = &mraa_ftdi_ft4222_gpio_read_replace; 579e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_write_replace = &mraa_ftdi_ft4222_gpio_write_replace; 580e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang func_table->gpio_interrupt_handler_replace = &mraa_ftdi_ft4222_gpio_interrupt_handler_replace; 581e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 582e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 583e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 584e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_board_t* 585e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhangmraa_ftdi_ft4222() 586e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang{ 587e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_board_t* sub_plat = (mraa_board_t*) calloc(1, sizeof(mraa_board_t)); 588e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (sub_plat == NULL) 589e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 5907d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban numI2cGpioExpanderPins = mraa_ftdi_ft4222_detect_io_expander(); 591e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int pinIndex = 0; 5927d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban int numUsbPins = numI2cGpioExpanderPins + 4; // Add GPIO0/SDA, GPIO1/SCL, GPIO2, GPIO3 593e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->platform_name = PLATFORM_NAME; 594e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->phy_pin_count = numUsbPins; 5957d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->gpio_count = numUsbPins; 596e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_pininfo_t* pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t) * numUsbPins); 597e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (pins == NULL) { 598e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 599e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 600e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins = pins; 601e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 602e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Virtual gpio pins on i2c I/O expander. 603e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_pincapabilities_t pinCapsGpio = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 }; 6047d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban for (pinIndex = 0; pinIndex < numI2cGpioExpanderPins; ++pinIndex) { 605e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang char name[8]; 606e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sprintf(name, "Pin%d", pinIndex); 607e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang strncpy(sub_plat->pins[pinIndex].name, name, 8); 608e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins[pinIndex].capabilites = pinCapsGpio; 6097d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 610e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 611e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 612e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang int bus = 0; 613e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->i2c_bus_count = 1; 614e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->def_i2c_bus = bus; 615e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->i2c_bus[bus].bus_id = bus; 616e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 6177d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // I2c pins (these are virtual, entries are required to configure i2c layer) 6187d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban mraa_pincapabilities_t pinCapsI2c = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 1, 0, 0 }; 6197d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban strncpy(sub_plat->pins[pinIndex].name, "SCL/GPIO0", 10); 620e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins[pinIndex].capabilites = pinCapsI2c; 6217d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 6227d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 623e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins[pinIndex].i2c.mux_total = 0; 6247d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->i2c_bus[bus].scl = pinIndex; 625e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang pinIndex++; 6267d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban strncpy(sub_plat->pins[pinIndex].name, "SDA/GPIO1", 10); 627e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins[pinIndex].capabilites = pinCapsI2c; 6287d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 6297d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 630e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->pins[pinIndex].i2c.mux_total = 0; 6317d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->i2c_bus[bus].sda = pinIndex; 6327d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinIndex++; 6337d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban 6347d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban // FTDI4222 gpio 6357d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban strncpy(sub_plat->pins[pinIndex].name, "GPIO2", 8); 6367d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].capabilites = pinCapsGpio; 6377d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 6387d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 6397d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban pinIndex++; 6407d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban strncpy(sub_plat->pins[pinIndex].name, "GPIO3", 8); 6417d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].capabilites = pinCapsGpio; 6427d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.pinmap = pinIndex; 6437d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban sub_plat->pins[pinIndex].gpio.mux_total = 0; 644e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 645e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang // Set override functions 646e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_adv_func_t* func_table = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t)); 647e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang if (func_table == NULL) { 648e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return NULL; 649e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang } 650e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang mraa_ftdi_ft4222_populate_i2c_func_table(func_table); 6517d3978fad94b70b4cb0dba9231b30870022f8563Mihai Serban mraa_ftdi_ft4222_populate_gpio_func_table(func_table); 652e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang 653e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang sub_plat->adv_func = func_table; 654e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang return sub_plat; 655e595125fe2f8ed6af763b9da7cfd817f576958dcJianxun Zhang} 656