这段调试信息是啥意思呀
"Process_UART.C ", line 143: cc1639: {D} warning: undefined behavior in
standard C: C554_CH1_RXD_OUT assigned more than once before sequence
point
C554_CH1_RXD_OUT = ++

[解决办法]
C554_CH1_RXD_OUT = ++
？？

应该是 C554_CH1_RXD_OUT ++; 吧。