static mraa_boolean_t
mraa_ftdi_ft4222_has_internal_gpio_triggered(int pin)
{
uint16 num_events = 0;
FT4222_STATUS ft4222Status = FT4222_GPIO_GetTriggerStatus(ftHandleGpio, pin, &num_events);
if (num_events > 0) {
int i;
uint16 num_events_read;
GPIO_Trigger event;
for (i = 0; i < num_events; ++i)
FT4222_GPIO_ReadTriggerQueue(ftHandleGpio, pin, &event, 1, &num_events_read);
return TRUE;
} else
return FALSE;
}
static void*
mraa_ftdi_ft4222_gpio_interrupt_handler_replace(mraa_gpio_context dev)
{
#ifdef USE_FT4222_GPIO_TRIGGER
// FIXME: Use big buffer; shouldn't be more than this many events to read
GPIO_Trigger event_buf[256];
int prev_level = mraa_ftdi_ft4222_gpio_read_replace(dev);
while (1) {
uint16 num_events = 0;
FT4222_STATUS status = FT4222_GPIO_GetTriggerStatus(ftHandleGpio, GPIO_PORT_IO_STATUS, &num_events);
if (status != FT4222_OK)
printf("FT4222_GPIO_GetTriggerStatus failed with code %d\n", status);
printf("%u: FT4222_GPIO_GetTriggerStatus Events = %d\n", mraa_ftdi_ft4222_get_tick_count_ms(), num_events);
if (num_events > 0) {
int level = mraa_ftdi_ft4222_gpio_read_replace(dev);
uint16 num_events_read;
FT4222_GPIO_ReadTriggerQueue(ftHandleGpio, GPIO_PORT_IO_STATUS, event_buf, num_events, &num_events_read);
// printf("%u: FT4222_GPIO_ReadTriggerQueue Events= %d\n", mraa_ftdi_ft4222_get_tick_count_ms(), num_events_read);
printf("%u: level = %d\n", mraa_ftdi_ft4222_get_tick_count_ms(), level);
if (level != prev_level) {
dev->isr(dev->isr_args);
prev_level = level;
}
}
mraa_ftdi_ft4222_sleep_ms(20);
// int level = mraa_ftdi_ft4222_gpio_read_replace(dev);
// printf("level = %d\n", level);
}
#else
int prev_level = mraa_ftdi_ft4222_gpio_read_replace(dev);
while (1) {
int level = mraa_ftdi_ft4222_gpio_read_replace(dev);
// MRAA_GPIO_EDGE_BOTH
if (level != prev_level) {
dev->isr(dev->isr_args);
prev_level = level;
}
mraa_ftdi_ft4222_sleep_ms(100);
}
#endif
return NULL;
}
