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driver: uart: Fix Modbus data currupted by DE-RE signal

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Add UART_UARTFR_BUSY_BITS To fix modbus data was currupted

Signed-off-by: sukrit buddeewong <sukrit.omu@gmail.com>
This commit is contained in:
sukrit buddeewong 2023-06-20 02:05:59 +07:00 • committed by Fabio Baltieri
commit c5bb959b25
1 changed files with 1 additions and 1 deletions
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drivers/serial/uart_rpi_pico.c
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@ -290,7 +290,7 @@ static int uart_rpi_irq_tx_complete(const struct device *dev)
const struct uart_rpi_config * const config = dev->config;
uart_hw_t * const uart_hw = config->uart_regs;
return !!(uart_hw->fr & UART_UARTFR_TXFE_BITS);
return !!(uart_hw->fr & UART_UARTFR_TXFE_BITS) && !(uart_hw->fr & UART_UARTFR_BUSY_BITS);
}
static int uart_rpi_irq_rx_ready(const struct device *dev)