#define PCA9672_ADDR 0x20
-static FT_HANDLE ftHandle = (FT_HANDLE) NULL;
+static FT_HANDLE ftHandleGPIO = (FT_HANDLE) NULL;
+static FT_HANDLE ftHandle = (FT_HANDLE) NULL; //I2C Handle
+static GPIO_Dir pinDirection[] = {GPIO_OUTPUT, GPIO_OUTPUT, GPIO_OUTPUT, GPIO_OUTPUT};
static int bus_speed = 400;
-static int numI2cGpioExapnderPins = 8;
+static int numI2cGpioExapnderPins = 0;
static int numUsbGpio = 0;
-
mraa_result_t
mraa_ftdi_ft4222_init()
{
*/
syslog(LOG_NOTICE, "FT_GetDeviceInfoList returned %d devices\n", numDevs);
- DWORD locationId = 0;
- for (i = 0; i < numDevs && locationId == 0; ++i) {
- // printf("%d: type = %d, location = %d\n", i, devInfo[i].Type, devInfo[i].LocId);
- if (devInfo[i].Type == FT_DEVICE_4222H_0 || devInfo[i].Type == FT_DEVICE_4222H_3)
- locationId = devInfo[i].LocId;
- }
- if (locationId == 0) {
- syslog(LOG_ERR, "FT_GetDeviceInfoList contains no valid devices\n");
+
+ if(numDevs > 2) {
+ syslog(LOG_ERR, "CNFMODE not supported. Valid modes are 0 or 3.\n");
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
- ftStatus = FT_OpenEx((PVOID)(uintptr_t) locationId, FT_OPEN_BY_LOCATION, &ftHandle);
+ if(numDevs = 2) {
+ ftStatus = FT_OpenEx((PVOID)(uintptr_t) devInfo[1].LocId, FT_OPEN_BY_LOCATION, &ftHandleGPIO);
+ if (ftStatus != FT_OK) {
+ syslog(LOG_ERR, "FT_OpenEx GPIO handle failed (error %d)\n", (int) ftStatus);
+ mraaStatus = MRAA_ERROR_NO_RESOURCES;
+ goto init_exit;
+ }
+
+ FT4222_SetSuspendOut(ftHandleGPIO, false);
+ FT4222_SetWakeUpInterrupt(ftHandleGPIO, false);
+
+ ftStatus = FT4222_GPIO_Init(ftHandleGPIO, pinDirection);
+ if (tStatus != FT_OK) {
+ syslog(LOG_ERR, "FT4222_GPIO_Init failed (error %d)\n", (int) ftStatus);
+ mraaStatus = MRAA_ERROR_NO_RESOURCES;
+ goto init_exit;
+ }
+ }
+
+ ftStatus = FT_OpenEx((PVOID)(uintptr_t) devInfo[0].LocId, FT_OPEN_BY_LOCATION, &ftHandle);
if (ftStatus != FT_OK) {
- syslog(LOG_ERR, "FT_OpenEx failed (error %d)\n", (int) ftStatus);
+ syslog(LOG_ERR, "FT_OpenEx I2C handle failed (error %d)\n", (int) ftStatus);
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
mraa_ftdi_ft4222_detect_io_expander()
{
uint8_t data;
- return mraa_ftdi_ft4222_i2c_read_internal(ftHandle, PCA9672_ADDR, &data, 1) == 1;
+ if(mraa_ftdi_ft4222_i2c_read_internal(ftHandle, PCA9672_ADDR, &data, 1) == 1) {
+ numI2cGpioExapnderPins = 8;
+ return 1;
+ }
+ return 0;
}
/******************* I2C functions *******************/
+// Function not currently mapped or used since we have virtual pin definitions
static mraa_i2c_context
-mraa_ftdi_ft4222_i2c_init_raw(unsigned int bus)
+mraa_ftdi_ft4222_i2c_init_raw_replace(unsigned int bus)
{
// Tell the FT4222 to be an I2C Master.
FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandle, bus_speed);
{
switch (dir) {
case MRAA_GPIO_IN:
+ if(dev->phy_pin >= numI2cGpioExapnderPins) {
+ pinDirection[dev->phy_pin - numI2cGpioExapnderPins] = GPIO_INPUT;
+ return MRAA_SUCCESS;
+ }
+ case MRAA_GPIO_OUT:
+ if(dev->phy_pin >= numI2cGpioExapnderPins) {
+ pinDirection[dev->phy_pin - numI2cGpioExapnderPins] = GPIO_OUTPUT;
+ return MRAA_SUCCESS;
+ }
case MRAA_GPIO_OUT_HIGH:
+ if(dev->phy_pin >= numI2cGpioExapnderPins) {
+ pinDirection[dev->phy_pin - numI2cGpioExapnderPins] = GPIO_OUTPUT;
+ }
return mraa_ftdi_ft4222_gpio_write_replace(dev, 1);
case MRAA_GPIO_OUT_LOW:
+ if(dev->phy_pin >= numI2cGpioExapnderPins) {
+ pinDirection[dev->phy_pin - numI2cGpioExapnderPins] = GPIO_OUTPUT;
+ }
return mraa_ftdi_ft4222_gpio_write_replace(dev, 0);
default:
;
// i2c pins (these are virtual, entries are required to configure i2c layer)
mraa_pincapabilities_t pinCapsI2c = (mraa_pincapabilities_t){ 1, 0, 0, 0, 0, 1, 0, 0 };
- strncpy(sub_plat->pins[pinIndex].name, "SDA", 8);
+ strncpy(sub_plat->pins[pinIndex].name, "SCL", 8);
sub_plat->pins[pinIndex].capabilites = pinCapsI2c;
sub_plat->pins[pinIndex].i2c.mux_total = 0;
- sub_plat->i2c_bus[bus].sda = pinIndex;
+ sub_plat->i2c_bus[bus].scl = pinIndex;
pinIndex++;
- strncpy(sub_plat->pins[pinIndex].name, "SCL", 8);
+ strncpy(sub_plat->pins[pinIndex].name, "SDA", 8);
sub_plat->pins[pinIndex].capabilites = pinCapsI2c;
sub_plat->pins[pinIndex].i2c.mux_total = 0;
- sub_plat->i2c_bus[bus].scl = pinIndex;
+ sub_plat->i2c_bus[bus].sda = pinIndex;
// Set override functions
mraa_adv_func_t* func_table = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t));