10 NRF24L01 Send failed 发送失败

发布于 2020-12-03 14:14:07 浏览：1923 订阅该版

![fdda35332cffa528b6935a4935b06b6e.png](/uploads/20201203/fdda35332cffa528b6935a4935b06b6e.png)
做官方的智能DIY教程的时候，把例程移植到了正点原子mini的板子上，出现了NRF24L01不能发送数据的情况，但是确认设备已经挂载到了总线上，数据发送线程也在运行中，请问这该怎么解决呢？![9e78f4d098aa1cce311540917da22fd.png](/uploads/20201203/50a030f9da1cfed32b2708dd7a937e01.png)
发送Send failed的函数语句是主程序NRF24发送线程中的nrf24_ptx_run()函数，如下所示![4dcb8ba001afef13b51ca2f25c12aec0.png](/uploads/20201203/4dcb8ba001afef13b51ca2f25c12aec0.png)
追入进去该函数实现如下
```c
/**
 * @brief PTX(ROLE) run
 * @param[in] pb_tx: pointer of tx-buffer
 * @param[out] pb_rx: pointer of rx-buffer
 * @param tlen: size of pb_tx (by bytes)
 * @return Zero indicates sent complete but no data received;
 *         Negative number indicates error;
 *         Other indicates the number of bytes of received data, and indicates that sent is complete 
 * 
 * @attention Send data and then received data 
 */
int nrf24_ptx_run(uint8_t *pb_rx, const uint8_t *pb_tx, uint8_t tlen)
{
    uint8_t sta, trycnt = 0, rlen = 0;

if (tlen > 32)
        return -6;

write_tx_payload(pb_tx, tlen);

hal_nrf24l01_port.set_ce();

do
    {
        sta = _read_reg(NRF24REG_STATUS);
        if (sta & NRF24BITMASK_MAX_RT)
        {
            // send failed; try again
            reset_status(NRF24BITMASK_MAX_RT);

if (++trycnt > 6)
            {
                hal_nrf24l01_port.reset_ce();
                flush_tx_fifo();
                reset_status(NRF24BITMASK_MAX_RT);

l_error_count++;

return -1;
            }
        }
    } while (!(sta & NRF24BITMASK_TX_DS));
    reset_status(NRF24BITMASK_TX_DS);

if (sta & NRF24BITMASK_RX_DR)
    {
        reset_status(NRF24BITMASK_RX_DR);
        rlen = get_top_rxfifo_width();
        read_rxpayload(pb_rx, rlen);
    }

hal_nrf24l01_port.reset_ce();

return rlen;
}
```