error: #20: identifier "GPIO_PA0_U0RX" is undefined - Arm...
Ok, I found the problem. GPIO Port A pin 0 and pin 1 are foruart 0, you have to useGPIO_PA0_U0RXandGPIO_PA1_U0TX. That should be ok now. Regards, Jo Damian Cieslicki11 年多前in reply toJo Chen Prodigy240p...