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ft4222: added error checking for getting libft4222 function addresses

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Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Henry Bruce
2016-03-07 14:29:11 -08:00
committed by Brendan Le Foll
parent 7f78b6760f
commit 3b9c4f2bad
1 changed files with 32 additions and 23 deletions
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55
src/usb/ftdi_ft4222.c
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@@ -66,6 +66,7 @@ static int numI2cGpioExpanderPins = 8;
static int numI2cSwitchBusses = 4;
static int currentI2cBus = 0;
static ft4222_io_exp_type gpio_expander_chip;
static mraa_boolean_t libft4222_load_success = TRUE;
FT_STATUS (*dl_FT_GetDeviceInfoList)(FT_DEVICE_LIST_INFO_NODE*, LPDWORD);
FT_STATUS (*dl_FT_CreateDeviceInfoList)(LPDWORD);
@@ -114,6 +115,17 @@ mraa_ftdi_ft4222_get_tick_count_ms()
return ticks - startTick;
}
void *
mraa_ftdi_ft4222_dlsym(const char *symbol)
{
void *func = dlsym(libft4222_lib, symbol);
if (func == NULL) {
syslog(LOG_ERR, "%s", dlerror());
libft4222_load_success = FALSE;
}
return func;
}
mraa_result_t
mraa_ftdi_ft4222_init()
@@ -125,30 +137,27 @@ mraa_ftdi_ft4222_init()
int i;
int retCode = 0;
dl_FT_GetDeviceInfoList = dlsym(libft4222_lib, "FT_GetDeviceInfoList");
dl_FT_CreateDeviceInfoList = dlsym(libft4222_lib, "FT_CreateDeviceInfoList");
dl_FT4222_GetVersion = dlsym(libft4222_lib, "FT4222_GetVersion");
dl_FT4222_I2CMaster_Write = dlsym(libft4222_lib, "FT4222_I2CMaster_Write");
dl_FT4222_I2CMaster_Reset = dlsym(libft4222_lib, "FT4222_I2CMaster_Reset");
dl_FT4222_I2CMaster_Read = dlsym(libft4222_lib, "FT4222_I2CMaster_Read");
dl_FT4222_I2CMaster_Init = dlsym(libft4222_lib, "FT4222_I2CMaster_Init");
dl_FT4222_I2CMaster_GetStatus = dlsym(libft4222_lib, "FT4222_I2CMaster_GetStatus");
dl_FT4222_GPIO_Init = dlsym(libft4222_lib, "FT4222_GPIO_Init");
dl_FT4222_GPIO_GetTriggerStatus = dlsym(libft4222_lib, "FT4222_GPIO_GetTriggerStatus");
dl_FT4222_GPIO_ReadTriggerQueue = dlsym(libft4222_lib, "FT4222_GPIO_ReadTriggerQueue");
dl_FT4222_GPIO_Read = dlsym(libft4222_lib, "FT4222_GPIO_Read");
dl_FT4222_GPIO_SetInputTrigger = dlsym(libft4222_lib, "FT4222_GPIO_SetInputTrigger");
dl_FT4222_GPIO_Write = dlsym(libft4222_lib, "FT4222_GPIO_Write");
dl_FT4222_SetWakeUpInterrupt = dlsym(libft4222_lib, "FT4222_SetWakeUpInterrupt");
dl_FT4222_SetSuspendOut = dlsym(libft4222_lib, "FT4222_SetSuspendOut");
dl_FT4222_SPIMaster_Init = dlsym(libft4222_lib, "FT4222_SPIMaster_Init");
dl_FT_OpenEx = dlsym(libft4222_lib, "FT_OpenEx");
dl_FT_GetDeviceInfoList = mraa_ftdi_ft4222_dlsym("FT_GetDeviceInfoList");
dl_FT_CreateDeviceInfoList = mraa_ftdi_ft4222_dlsym("FT_CreateDeviceInfoList");
dl_FT4222_GetVersion = mraa_ftdi_ft4222_dlsym("FT4222_GetVersion");
dl_FT4222_I2CMaster_Write = mraa_ftdi_ft4222_dlsym("FT4222_I2CMaster_Write");
dl_FT4222_I2CMaster_Reset = mraa_ftdi_ft4222_dlsym("FT4222_I2CMaster_Reset");
dl_FT4222_I2CMaster_Read = mraa_ftdi_ft4222_dlsym("FT4222_I2CMaster_Read");
dl_FT4222_I2CMaster_Init = mraa_ftdi_ft4222_dlsym("FT4222_I2CMaster_Init");
dl_FT4222_I2CMaster_GetStatus = mraa_ftdi_ft4222_dlsym("FT4222_I2CMaster_GetStatus");
dl_FT4222_GPIO_Init = mraa_ftdi_ft4222_dlsym("FT4222_GPIO_Init");
dl_FT4222_GPIO_GetTriggerStatus = mraa_ftdi_ft4222_dlsym("FT4222_GPIO_GetTriggerStatus");
dl_FT4222_GPIO_ReadTriggerQueue = mraa_ftdi_ft4222_dlsym("FT4222_GPIO_ReadTriggerQueue");
dl_FT4222_GPIO_Read = mraa_ftdi_ft4222_dlsym("FT4222_GPIO_Read");
dl_FT4222_GPIO_SetInputTrigger = mraa_ftdi_ft4222_dlsym("FT4222_GPIO_SetInputTrigger");
dl_FT4222_GPIO_Write = mraa_ftdi_ft4222_dlsym("FT4222_GPIO_Write");
dl_FT4222_SetWakeUpInterrupt = mraa_ftdi_ft4222_dlsym("FT4222_SetWakeUpInterrupt");
dl_FT4222_SetSuspendOut = mraa_ftdi_ft4222_dlsym("FT4222_SetSuspendOut");
dl_FT4222_SPIMaster_Init = mraa_ftdi_ft4222_dlsym("FT4222_SPIMaster_Init");
dl_FT_OpenEx = mraa_ftdi_ft4222_dlsym("FT_OpenEx");
char *error = dlerror();
if (error != NULL) {
printf(error);
syslog(LOG_ERR, "Failed to find all symbols fort FTDI4222 support");
syslog(LOG_ERR, error);
if (!libft4222_load_success) {
syslog(LOG_ERR, "Failed to find all symbols for FTDI4222 support");
goto init_exit;
}