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[update] return value judgment.

This commit is contained in:
thread-liu 2021-01-21 09:46:00 +08:00
parent f691db99b5
commit c8ac5c748a
1 changed files with 14 additions and 2 deletions
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16
bsp/stm32/stm32mp157a-st-ev1/board/ports/dma_sample.c
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@ -88,8 +88,20 @@ static int uart_dma_sample(int argc, char *argv[])
sizeof(msg_pool),
RT_IPC_FLAG_FIFO);
rt_device_open(serial, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_DMA_RX);
rt_device_set_rx_indicate(serial, uart_input);
ret = rt_device_open(serial, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_DMA_RX);
if (ret != RT_EOK)
{
rt_kprintf("serial device open fail!.\n");
return -RT_ERROR;
}
ret = rt_device_set_rx_indicate(serial, uart_input);
if (ret != RT_EOK)
{
rt_kprintf("set rx indicate fail!.\n");
return -RT_ERROR;
}
rt_device_write(serial, 0, str, (sizeof(str) - 1));
rt_thread_t thread = rt_thread_create("serial", serial_thread_entry, RT_NULL, 1024, 25, 10);