SmartBond DA14530 and DA14531

1 month ago

这不是用于调试但是（最终）的调试。该设备在板上有另一个微处理器，连接到UART2。我只是想知道此刻的UART驱动程序。以下代码是代表性提取物。

//在启动期间调用void start（void）{app_easy_timer（LED_TIMER_VAL，TIMER_CB）;} //只是一个测试#define long_msg“猫坐在席位上梦想着这个，那个小鼠标相关的东西”静态void timer_cb（void）{app_easy_timer（LED_timer_val，timer_cb）;pic_uart_send（long_msg）;} void pic_uart_send（const char *消息）{//尝试在消息发送arch_force_active_mode（）时尝试停止睡眠;UART_REGISTER_TX_CB（PIC_UART，PIC_UART_SEND_CB）;UART_SEND（PIC_UART，（UINT8_T *）消息，strlen（消息），UART_OP_INTR）;静态void pic_uart_send_cb（uint16_t长度）{//允许睡眠现在已完成消息。//这不起作用，因为TX FIFO在调用回调时包含邮件的最后一个块//。ARCH_RESTORE_SLEEP_MODE（）;}

这就是我的腻子：

"The cat sat on the mat dreaming of this and that little mouse related cat sat on the mat dreaming of this and that little mouse relatedThe cat sat on the mat dreaming of this and that little mouse related▒The cat sat on the mat dreaming of this and that little mouse related The cat sat on the mat dreaming of this and that little mouse related The cat sat on the mat dreaming of this and that little mouse related".

I looked at the UART driver ISR as it seems like the callback is called immediately after the last chunk of the message is pushed into the FIFO. I could fix that, but wondered if there is a better way.

I also looked at arch_console.c - I note that the TX callback in that code uses the same method I have tried, but explicitly blocks while the FIFO is not empty. I guess that works, but I prefer my code to never block.

我用SDK 6.0.14.1114。我可以建议foll吗owing modified uart_tx_isr()? This allows one more interrupt which occurs after the FIFO is finally empty. Only then does it disable interrupts and call the callback function. I tried it with various string lengths that were on or near the FIFO size and it seems to do the right thing.

静态void UART_TX_ISR（UART_T * UART_ID）{UART_ENV_T * UART_ENV = UART_ENV（UART_ID）;//条件要阻止回调，直到FIFO为空IF（UART_ENV-> TX_INDEX  TX_TOTAL_LENGH）{//虽然有可用空间，但在（UART_ENV-> TX_INDEX  TX_TOTAL_LENGTH）中放入THR_REG或FIFO中的数据{//如果启用了FIFO，如果它已满（Uart_fifo_enabled_getf（Uart_fo_eNabled_getf（Uart_d））{if（！uart_txfifo_not_full_getf（Uart_id））{return;}} // else，如果thr退出，如果（！uart_thr_empty_getf（uart_id））{return;} //发送一个字节UART_THR_SETF（UART_ID，UART_ENV-> TX_BUFFER [UART_ENV-> TX_INDEX ++];} 返回;} //所有已发送的所有内容//禁用TX中断UART_TXDATA_INTR_SETF（UART_ID，UART_BIT_DIS）;UART_Thre_Intr_setf（UART_ID，UART_BIT_DIS）;//如果（UART_ENV-> TX_CB！= NULL）{UART_ENV-> TX_CB（UART_ENV-> TX_TOTAL_LENGH）;}}

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