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ftdi_ft4222.c: clean up, styling fix

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Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2015-08-25 15:51:02 +01:00
parent a49d8d6d12
commit fc55088c03
1 changed files with 104 additions and 113 deletions
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217
src/usb/ftdi_ft4222.c
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@@ -33,11 +33,11 @@
#include "usb/ftdi_ft4222.h"
#define PLATFORM_NAME "FTDI FT4222"
#define I2CM_ERROR(status) (((status) & 0x02) != 0)
#define I2CM_ERROR(status) (((status) &0x02) != 0)
#define PCA9672_ADDR 0x20
static FT_HANDLE ftHandle = (FT_HANDLE)NULL;
static FT_HANDLE ftHandle = (FT_HANDLE) NULL;
static int bus_speed = 400;
static int numI2cGpioExapnderPins = 8;
static int numUsbGpio = 0;
@@ -48,93 +48,88 @@ mraa_ftdi_ft4222_init()
{
mraa_result_t mraaStatus = MRAA_SUCCESS;
FT_STATUS ftStatus;
FT_DEVICE_LIST_INFO_NODE *devInfo = NULL;
FT_DEVICE_LIST_INFO_NODE* devInfo = NULL;
DWORD numDevs = 0;
int i;
int retCode = 0;
ftStatus = FT_CreateDeviceInfoList(&numDevs);
if (ftStatus != FT_OK)
{
if (ftStatus != FT_OK) {
syslog(LOG_ERR, "FT_CreateDeviceInfoList failed: error code %d\n", ftStatus);
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
if (numDevs == 0)
{
if (numDevs == 0) {
syslog(LOG_ERR, "No FT4222 devices connected.\n");
goto init_exit;
}
devInfo = calloc((size_t)numDevs, sizeof(FT_DEVICE_LIST_INFO_NODE));
if (devInfo == NULL)
{
devInfo = calloc((size_t) numDevs, sizeof(FT_DEVICE_LIST_INFO_NODE));
if (devInfo == NULL) {
syslog(LOG_ERR, "FT4222 allocation failure.\n");
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
ftStatus = FT_GetDeviceInfoList(devInfo, &numDevs);
if (ftStatus != FT_OK)
{
syslog(LOG_ERR, "FT_GetDeviceInfoList failed (error code %d)\n", (int)ftStatus);
if (ftStatus != FT_OK) {
syslog(LOG_ERR, "FT_GetDeviceInfoList failed (error code %d)\n", (int) ftStatus);
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
/*
FT4222_Version ft4222Version;
FT4222_STATUS ft4222Status = FT4222_GetVersion(ftHandle, &ft4222Version);
if (FT4222_OK == ft4222Status){
syslog(LOG_NOTICE, "FT4222_GetVersion %08X %08X\n", ft4222Version.chipVersion, ft4222Version.dllVersion);
} else
syslog(LOG_ERR, "FT4222_GetVersion failed with code %d", ft4222Status);
*/
/*
FT4222_Version ft4222Version;
FT4222_STATUS ft4222Status = FT4222_GetVersion(ftHandle, &ft4222Version);
if (FT4222_OK == ft4222Status){
syslog(LOG_NOTICE, "FT4222_GetVersion %08X %08X\n", ft4222Version.chipVersion,
ft4222Version.dllVersion);
} else
syslog(LOG_ERR, "FT4222_GetVersion failed with code %d", ft4222Status);
*/
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;
}
locationId = devInfo[i].LocId;
}
if (locationId == 0) {
syslog(LOG_ERR, "FT_GetDeviceInfoList contains no valid devices\n");
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
ftStatus = FT_OpenEx((PVOID)(uintptr_t)locationId, FT_OPEN_BY_LOCATION, &ftHandle);
if (ftStatus != FT_OK)
{
syslog(LOG_ERR, "FT_OpenEx failed (error %d)\n", (int)ftStatus);
ftStatus = FT_OpenEx((PVOID)(uintptr_t) locationId, FT_OPEN_BY_LOCATION, &ftHandle);
if (ftStatus != FT_OK) {
syslog(LOG_ERR, "FT_OpenEx failed (error %d)\n", (int) ftStatus);
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
// Tell the FT4222 to be an I2C Master.
FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandle, bus_speed);
if (FT4222_OK != ft4222Status)
{
if (FT4222_OK != ft4222Status) {
syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status);
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
// Reset the I2CM registers to a known state.
ft4222Status = FT4222_I2CMaster_Reset(ftHandle);
if (FT4222_OK != ft4222Status)
{
if (FT4222_OK != ft4222Status) {
syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status);
mraaStatus = MRAA_ERROR_NO_RESOURCES;
goto init_exit;
}
init_exit:
if (devInfo != NULL);
free(devInfo);
if (devInfo != NULL)
;
free(devInfo);
if (mraaStatus == MRAA_SUCCESS)
syslog(LOG_NOTICE, "mraa_ftdi_ft4222_init completed successfully\n");
return mraaStatus;
@@ -147,13 +142,13 @@ mraa_ftdi_ft4222_get_version(unsigned int* versionChip, unsigned int* versionLib
if (ftHandle != NULL) {
FT4222_Version ft4222Version;
FT4222_STATUS ft4222Status = FT4222_GetVersion(ftHandle, &ft4222Version);
if (FT4222_OK == ft4222Status){
*versionChip = (unsigned int)ft4222Version.chipVersion;
*versionLib = (unsigned int)ft4222Version.dllVersion;
if (FT4222_OK == ft4222Status) {
*versionChip = (unsigned int) ft4222Version.chipVersion;
*versionLib = (unsigned int) ft4222Version.dllVersion;
syslog(LOG_NOTICE, "FT4222_GetVersion %08X %08X\n", *versionChip, *versionLib);
return MRAA_SUCCESS;
} else {
syslog(LOG_ERR, "libmraa: FT4222_GetVersion failed (error %d)\n", (int)ft4222Status);
syslog(LOG_ERR, "libmraa: FT4222_GetVersion failed (error %d)\n", (int) ft4222Status);
return MRAA_ERROR_NO_RESOURCES;
}
} else {
@@ -167,13 +162,12 @@ static int
mraa_ftdi_ft4222_i2c_read_internal(FT_HANDLE handle, uint8_t addr, uint8_t* data, int length)
{
uint16 bytesRead = 0;
uint8 controllerStatus;
uint8 controllerStatus;
// syslog(LOG_NOTICE, "FT4222_I2CMaster_Read(%#02X, %#02X)", addr, length);
FT4222_STATUS ft4222Status = FT4222_I2CMaster_Read(handle, addr, data, length, &bytesRead);
ft4222Status = FT4222_I2CMaster_GetStatus(ftHandle, &controllerStatus);
if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus))
{
syslog(LOG_ERR, "FT4222_I2CMaster_Read failed (error %d)\n", (int)ft4222Status);
ft4222Status = FT4222_I2CMaster_GetStatus(ftHandle, &controllerStatus);
if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus)) {
syslog(LOG_ERR, "FT4222_I2CMaster_Read failed (error %d)\n", (int) ft4222Status);
return 0;
}
return bytesRead;
@@ -183,24 +177,24 @@ static int
mraa_ftdi_ft4222_i2c_write_internal(FT_HANDLE handle, uint8_t addr, const uint8_t* data, int bytesToWrite)
{
uint16 bytesWritten = 0;
uint8 controllerStatus;
uint8 controllerStatus;
// syslog(LOG_NOTICE, "FT4222_I2CMaster_Write(%#02X, %#02X, %d)", addr, *data, bytesToWrite);
FT4222_STATUS ft4222Status = FT4222_I2CMaster_Write(handle, addr, (uint8_t*)data, bytesToWrite, &bytesWritten);
ft4222Status = FT4222_I2CMaster_GetStatus(ftHandle, &controllerStatus);
if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus))
{
syslog(LOG_ERR, "FT4222_I2CMaster_Write failed (error %d)\n", (int)ft4222Status);
FT4222_STATUS ft4222Status =
FT4222_I2CMaster_Write(handle, addr, (uint8_t*) data, bytesToWrite, &bytesWritten);
ft4222Status = FT4222_I2CMaster_GetStatus(ftHandle, &controllerStatus);
if (FT4222_OK != ft4222Status || I2CM_ERROR(controllerStatus)) {
syslog(LOG_ERR, "FT4222_I2CMaster_Write failed (error %d)\n", (int) ft4222Status);
return 0;
}
if (bytesWritten != bytesToWrite)
syslog(LOG_ERR, "FT4222_I2CMaster_Write wrote %u of %u bytes.\n", bytesWritten, bytesToWrite);
return bytesWritten;
return bytesWritten;
}
static mraa_boolean_t
static mraa_boolean_t
mraa_ftdi_ft4222_detect_io_expander()
{
uint8_t data;
@@ -208,24 +202,20 @@ mraa_ftdi_ft4222_detect_io_expander()
}
/******************* I2C functions *******************/
static mraa_i2c_context
mraa_ftdi_ft4222_i2c_init_raw(unsigned int bus)
{
// Tell the FT4222 to be an I2C Master.
FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandle, bus_speed);
if (FT4222_OK != ft4222Status)
{
if (FT4222_OK != ft4222Status) {
syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status);
return NULL;
}
// Reset the I2CM registers to a known state.
ft4222Status = FT4222_I2CMaster_Reset(ftHandle);
if (FT4222_OK != ft4222Status)
{
if (FT4222_OK != ft4222Status) {
syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status);
return NULL;
}
@@ -237,8 +227,9 @@ mraa_ftdi_ft4222_i2c_init_raw(unsigned int bus)
}
dev->handle = ftHandle;
dev->fh = -1; // We don't use file descriptors
dev->funcs = I2C_FUNC_I2C; // Advertise minimal i2c support as per https://www.kernel.org/doc/Documentation/i2c/functionality
dev->fh = -1; // We don't use file descriptors
dev->funcs = I2C_FUNC_I2C; // Advertise minimal i2c support as per
// https://www.kernel.org/doc/Documentation/i2c/functionality
return dev;
}
@@ -247,23 +238,22 @@ mraa_ftdi_ft4222_i2c_init_bus_replace(mraa_i2c_context dev)
{
// Tell the FT4222 to be an I2C Master.
FT4222_STATUS ft4222Status = FT4222_I2CMaster_Init(ftHandle, 400);
if (FT4222_OK != ft4222Status)
{
if (FT4222_OK != ft4222Status) {
syslog(LOG_ERR, "FT4222_I2CMaster_Init failed (error %d)!\n", ft4222Status);
return MRAA_ERROR_NO_RESOURCES;
}
// Reset the I2CM registers to a known state.
ft4222Status = FT4222_I2CMaster_Reset(ftHandle);
if (FT4222_OK != ft4222Status)
{
if (FT4222_OK != ft4222Status) {
syslog(LOG_ERR, "FT4222_I2CMaster_Reset failed (error %d)!\n", ft4222Status);
return MRAA_ERROR_NO_RESOURCES;
}
dev->handle = ftHandle;
dev->fh = -1; // We don't use file descriptors
dev->funcs = I2C_FUNC_I2C; // Advertise minimal i2c support as per https://www.kernel.org/doc/Documentation/i2c/functionality
dev->fh = -1; // We don't use file descriptors
dev->funcs = I2C_FUNC_I2C; // Advertise minimal i2c support as per
// https://www.kernel.org/doc/Documentation/i2c/functionality
return MRAA_SUCCESS;
}
@@ -272,15 +262,15 @@ static mraa_result_t
mraa_ftdi_ft4222_i2c_frequency(mraa_i2c_context dev, mraa_i2c_mode_t mode)
{
switch (mode) {
case MRAA_I2C_STD: /**< up to 100Khz */
bus_speed = 100;
break;
MRAA_I2C_FAST: /**< up to 400Khz */
bus_speed = 400;
break;
MRAA_I2C_HIGH: /**< up to 3.4Mhz */
bus_speed = 3400;
break;
case MRAA_I2C_STD: /**< up to 100Khz */
bus_speed = 100;
break;
MRAA_I2C_FAST: /**< up to 400Khz */
bus_speed = 400;
break;
MRAA_I2C_HIGH: /**< up to 3.4Mhz */
bus_speed = 3400;
break;
}
return MRAA_SUCCESS;
}
@@ -324,7 +314,7 @@ static mraa_result_t
mraa_ftdi_ft4222_i2c_write(mraa_i2c_context dev, const uint8_t* data, int bytesToWrite)
{
uint16 bytesWritten = mraa_ftdi_ft4222_i2c_write_internal(dev->handle, dev->addr, data, bytesToWrite);
return bytesToWrite == bytesWritten ? MRAA_SUCCESS : MRAA_ERROR_INVALID_HANDLE;
return bytesToWrite == bytesWritten ? MRAA_SUCCESS : MRAA_ERROR_INVALID_HANDLE;
}
@@ -339,7 +329,7 @@ static uint8_t
mraa_ftdi_ft4222_i2c_read_byte_data(mraa_i2c_context dev, uint8_t command)
{
const uint8_t reg_addr = command;
uint8_t data;
uint8_t data;
if (mraa_ftdi_ft4222_i2c_write(dev, &reg_addr, 1) != MRAA_SUCCESS)
return 0;
if (mraa_ftdi_ft4222_i2c_read(dev, &data, 1) != 1)
@@ -361,8 +351,8 @@ mraa_ftdi_ft4222_i2c_write_word_data(mraa_i2c_context dev, const uint16_t data,
{
uint8_t buf[3];
buf[0] = command;
buf[1] = (uint8_t)data;
buf[2] = (uint8_t)(data >> 8);
buf[1] = (uint8_t) data;
buf[2] = (uint8_t)(data >> 8);
return mraa_ftdi_ft4222_i2c_write(dev, buf, 3);
}
@@ -425,37 +415,39 @@ static mraa_result_t
mraa_ftdi_ft4222_gpio_dir_replace(mraa_gpio_context dev, mraa_gpio_dir_t dir)
{
switch (dir) {
case MRAA_GPIO_IN:
case MRAA_GPIO_OUT_HIGH:
return mraa_ftdi_ft4222_gpio_write_replace(dev, 1);
case MRAA_GPIO_OUT_LOW:
return mraa_ftdi_ft4222_gpio_write_replace(dev, 0);
default:;
case MRAA_GPIO_IN:
case MRAA_GPIO_OUT_HIGH:
return mraa_ftdi_ft4222_gpio_write_replace(dev, 1);
case MRAA_GPIO_OUT_LOW:
return mraa_ftdi_ft4222_gpio_write_replace(dev, 0);
default:
;
}
return MRAA_SUCCESS;
return MRAA_SUCCESS;
}
static void
static void
mraa_ftdi_ft4222_sleep_ms(unsigned long mseconds)
{
struct timespec sleepTime;
struct timespec sleepTime;
sleepTime.tv_sec = mseconds / 1000; // Number of seconds
sleepTime.tv_nsec = ( mseconds % 1000 ) * 1000000; // Convert fractional seconds to nanoseconds
sleepTime.tv_sec = mseconds / 1000; // Number of seconds
sleepTime.tv_nsec = (mseconds % 1000) * 1000000; // Convert fractional seconds to nanoseconds
// Iterate nanosleep in a loop until the total sleep time is the original
// value of the seconds parameter
while ( ( nanosleep( &sleepTime, &sleepTime ) != 0 ) && ( errno == EINTR ) );
// Iterate nanosleep in a loop until the total sleep time is the original
// value of the seconds parameter
while ((nanosleep(&sleepTime, &sleepTime) != 0) && (errno == EINTR))
;
}
static void*
static void*
mraa_ftdi_ft4222_gpio_interrupt_handler_replace(mraa_gpio_context dev)
{
int prev_level = mraa_ftdi_ft4222_gpio_read_replace(dev);
while (1) {
int level = mraa_ftdi_ft4222_gpio_read_replace(dev);
if (level != prev_level) {
dev->isr(dev->isr_args);
dev->isr(dev->isr_args);
prev_level = level;
}
// printf("mraa_ftdi_ft4222_gpio_interrupt_handler_replace\n");
@@ -479,7 +471,7 @@ mraa_ftdi_ft4222_populate_i2c_func_table(mraa_adv_func_t* func_table)
func_table->i2c_write_byte_replace = &mraa_ftdi_ft4222_i2c_write_byte;
func_table->i2c_write_byte_data_replace = &mraa_ftdi_ft4222_i2c_write_byte_data;
func_table->i2c_write_word_data_replace = &mraa_ftdi_ft4222_i2c_write_word_data;
func_table->i2c_stop_replace = &mraa_ftdi_ft4222_i2c_stop;
func_table->i2c_stop_replace = &mraa_ftdi_ft4222_i2c_stop;
}
static void
@@ -487,10 +479,10 @@ mraa_ftdi_ft4222_populate_gpio_func_table(mraa_adv_func_t* func_table)
{
func_table->gpio_init_internal_replace = &mraa_ftdi_ft4222_gpio_init_internal_replace;
func_table->gpio_mode_replace = &mraa_ftdi_ft4222_gpio_mode_replace;
func_table->gpio_edge_mode_replace = &mraa_ftdi_ft4222_gpio_edge_mode_replace;
func_table->gpio_edge_mode_replace = &mraa_ftdi_ft4222_gpio_edge_mode_replace;
func_table->gpio_dir_replace = &mraa_ftdi_ft4222_gpio_dir_replace;
func_table->gpio_read_replace = &mraa_ftdi_ft4222_gpio_read_replace;
func_table->gpio_write_replace = &mraa_ftdi_ft4222_gpio_write_replace;
func_table->gpio_read_replace = &mraa_ftdi_ft4222_gpio_read_replace;
func_table->gpio_write_replace = &mraa_ftdi_ft4222_gpio_write_replace;
func_table->gpio_interrupt_handler_replace = &mraa_ftdi_ft4222_gpio_interrupt_handler_replace;
}
@@ -507,16 +499,16 @@ mraa_ftdi_ft4222()
int numUsbPins = numUsbGpio + 2; // Add SDA and SCL
sub_plat->platform_name = PLATFORM_NAME;
sub_plat->phy_pin_count = numUsbPins;
sub_plat->gpio_count = numUsbGpio;
sub_plat->gpio_count = numUsbGpio;
mraa_pininfo_t* pins = (mraa_pininfo_t*) malloc(sizeof(mraa_pininfo_t) * numUsbPins);
if (pins == NULL) {
return NULL;
}
sub_plat->pins = pins;
// Virtual gpio pins on i2c I/O expander.
mraa_pincapabilities_t pinCapsGpio = (mraa_pincapabilities_t){ 1, 1, 0, 0, 0, 0, 0, 0 };
for (pinIndex=0; pinIndex < numUsbGpio; ++pinIndex) {
for (pinIndex = 0; pinIndex < numUsbGpio; ++pinIndex) {
char name[8];
sprintf(name, "Pin%d", pinIndex);
strncpy(sub_plat->pins[pinIndex].name, name, 8);
@@ -527,7 +519,7 @@ mraa_ftdi_ft4222()
sub_plat->i2c_bus_count = 1;
sub_plat->def_i2c_bus = bus;
sub_plat->i2c_bus[bus].bus_id = bus;
// 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);
@@ -539,7 +531,7 @@ mraa_ftdi_ft4222()
sub_plat->pins[pinIndex].capabilites = pinCapsI2c;
sub_plat->pins[pinIndex].i2c.mux_total = 0;
sub_plat->i2c_bus[bus].scl = pinIndex;
// Set override functions
mraa_adv_func_t* func_table = (mraa_adv_func_t*) calloc(1, sizeof(mraa_adv_func_t));
if (func_table == NULL) {
@@ -547,9 +539,8 @@ mraa_ftdi_ft4222()
}
mraa_ftdi_ft4222_populate_i2c_func_table(func_table);
if (haveGpio)
mraa_ftdi_ft4222_populate_gpio_func_table(func_table);
mraa_ftdi_ft4222_populate_gpio_func_table(func_table);
sub_plat->adv_func = func_table;
return sub_plat;
}