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clean up

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This commit is contained in:
hathach 2018-09-25 12:48:48 +07:00
parent 01c1296197
commit d714479924
1 changed files with 16 additions and 21 deletions
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37
ports/nrf/common-hal/busio/UART.c
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@ -48,20 +48,8 @@
}\
}while(0)
#define UARTE_DEBUG 0
#if UARTE_DEBUG
#define PRINT_INT(x) printf("%s: %d: " #x " = %ld\n" , __FUNCTION__, __LINE__, (uint32_t) (x) )
#else
#define PRINT_INT(x)
#endif
static uint32_t get_nrf_baud (uint32_t baudrate);
static uint32_t _err = 0;
static uint32_t _err_count = 0;
static void uart_callback_irq (const nrfx_uarte_event_t * event, void * context) {
busio_uart_obj_t* self = (busio_uart_obj_t*) context;
@ -74,12 +62,9 @@ static void uart_callback_irq (const nrfx_uarte_event_t * event, void * context)
break;
case NRFX_UART_EVT_ERROR:
// Abort too fast will cause error occasionally
if ( self->rx_count == -1 ) {
self->rx_count = 0; // event->data.error.rxtx.bytes;
self->rx_count = 0;
}
_err_count = event->data.error.rxtx.bytes;
_err = event->data.error.error_mask;
break;
default:
@ -184,7 +169,7 @@ size_t common_hal_busio_uart_read(busio_uart_obj_t *self, uint8_t *data, size_t
uint64_t start_ticks = ticks_ms;
while ( 1 ) {
// Wait for on-going reception to complete
// Wait for on-going transfer to complete
while ( (self->rx_count == -1) && (ticks_ms - start_ticks < self->timeout_ms) ) {
#ifdef MICROPY_VM_HOOK_LOOP
MICROPY_VM_HOOK_LOOP
@ -233,8 +218,19 @@ size_t common_hal_busio_uart_write(busio_uart_obj_t *self, const uint8_t *data,
if ( len == 0 ) return 0;
if ( !nrfx_uarte_tx_in_progress(&self->uarte) ) {
nrfx_uarte_tx_abort(&self->uarte);
uint64_t start_ticks = ticks_ms;
// Wait for on-going transfer to complete
while ( nrfx_uarte_tx_in_progress(&self->uarte) && (ticks_ms - start_ticks < self->timeout_ms) ) {
#ifdef MICROPY_VM_HOOK_LOOP
MICROPY_VM_HOOK_LOOP
#endif
}
// Time up
if ( !(ticks_ms - start_ticks < self->timeout_ms) ) {
*errcode = MP_EAGAIN;
return MP_STREAM_ERROR;
}
// EasyDMA can only access SRAM
@ -248,7 +244,6 @@ size_t common_hal_busio_uart_write(busio_uart_obj_t *self, const uint8_t *data,
_VERIFY_ERR(*errcode);
(*errcode) = 0;
uint64_t start_ticks = ticks_ms;
while ( nrfx_uarte_tx_in_progress(&self->uarte) && (ticks_ms - start_ticks < self->timeout_ms) ) {
#ifdef MICROPY_VM_HOOK_LOOP
MICROPY_VM_HOOK_LOOP
@ -283,7 +278,7 @@ uint32_t common_hal_busio_uart_rx_characters_available(busio_uart_obj_t *self) {
#ifndef NRF52840_XXAA
mp_raise_NotImplementedError(translate("busio.UART not yet implemented"));
#else
return (self->rx_count > 0) ? 1 : 0;
return (self->rx_count > 0) ? self->rx_count : 0;
#endif
}