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driver(uart):Fix the bug that uart buffer_full flag is true all the time.
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@ -1159,8 +1159,8 @@ int uart_read_bytes(uart_port_t uart_num, uint8_t* buf, uint32_t length, TickTyp
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if(res == pdTRUE) {
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UART_ENTER_CRITICAL(&uart_spinlock[uart_num]);
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p_uart_obj[uart_num]->rx_buffered_len += p_uart_obj[uart_num]->rx_stash_len;
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UART_EXIT_CRITICAL(&uart_spinlock[uart_num]);
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p_uart_obj[uart_num]->rx_buffer_full_flg = false;
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UART_EXIT_CRITICAL(&uart_spinlock[uart_num]);
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uart_enable_rx_intr(p_uart_obj[uart_num]->uart_num);
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}
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}
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@ -1205,6 +1205,14 @@ esp_err_t uart_flush_input(uart_port_t uart_num)
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}
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data = (uint8_t*) xRingbufferReceive(p_uart->rx_ring_buf, &size, (portTickType) 0);
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if(data == NULL) {
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if( p_uart_obj[uart_num]->rx_buffered_len != 0 ) {
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ESP_LOGE(UART_TAG, "rx_buffered_len error");
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p_uart_obj[uart_num]->rx_buffered_len = 0;
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}
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//We also need to clear the `rx_buffer_full_flg` here.
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UART_ENTER_CRITICAL(&uart_spinlock[uart_num]);
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p_uart_obj[uart_num]->rx_buffer_full_flg = false;
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UART_EXIT_CRITICAL(&uart_spinlock[uart_num]);
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break;
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}
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UART_ENTER_CRITICAL(&uart_spinlock[uart_num]);
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@ -1217,8 +1225,8 @@ esp_err_t uart_flush_input(uart_port_t uart_num)
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if(res == pdTRUE) {
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UART_ENTER_CRITICAL(&uart_spinlock[uart_num]);
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p_uart_obj[uart_num]->rx_buffered_len += p_uart_obj[uart_num]->rx_stash_len;
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UART_EXIT_CRITICAL(&uart_spinlock[uart_num]);
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p_uart_obj[uart_num]->rx_buffer_full_flg = false;
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UART_EXIT_CRITICAL(&uart_spinlock[uart_num]);
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}
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}
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}
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