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Fix uart tx function block issue

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To enable tx empty interrupt each time the tx ringbuffer get filled, so that tx function will not block if tx data length is larger than tx ringbuffer size.
Reported from customer of Audio team.
This commit is contained in:
Wangjialin 2017-04-12 16:57:37 +08:00
parent 3cad00fdcc
commit 315aa1fcd8
1 changed files with 1 additions and 1 deletions
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2
components/driver/uart.c
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@ -806,9 +806,9 @@ static int uart_tx_all(uart_port_t uart_num, const char* src, size_t size, bool
xRingbufferSend(p_uart_obj[uart_num]->tx_ring_buf, (void*) (src + offset), send_size, portMAX_DELAY); xRingbufferSend(p_uart_obj[uart_num]->tx_ring_buf, (void*) (src + offset), send_size, portMAX_DELAY);
size -= send_size; size -= send_size;
offset += send_size; offset += send_size;
uart_enable_tx_intr(uart_num, 1, UART_EMPTY_THRESH_DEFAULT);
} }
xSemaphoreGive(p_uart_obj[uart_num]->tx_mux); xSemaphoreGive(p_uart_obj[uart_num]->tx_mux);
uart_enable_tx_intr(uart_num, 1, UART_EMPTY_THRESH_DEFAULT);
} else { } else {
while(size) { while(size) {
//semaphore for tx_fifo available //semaphore for tx_fifo available