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Merge branch 'bugfix/uart_tx_buffer_blocked' into 'master'

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Fix uart tx function block issue

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.

See merge request !658
This commit is contained in:
Ivan Grokhotkov 2017-04-13 15:29:09 +08:00
commit 3cd6d4e5fc
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);
size -= send_size;
offset += send_size;
uart_enable_tx_intr(uart_num, 1, UART_EMPTY_THRESH_DEFAULT);
}
xSemaphoreGive(p_uart_obj[uart_num]->tx_mux);
uart_enable_tx_intr(uart_num, 1, UART_EMPTY_THRESH_DEFAULT);
} else {
while(size) {
//semaphore for tx_fifo available