Other Parts Discussed in Thread: TM4C1230D5PM
配置串口引脚函数GPIOPinConfigure(uint32_t ui32PinConfig);
编译就出现,请问一下怎么解决
user\chuankou.c(16): error: #20: identifier "GPIO_PC4_U7Rx" is undefined
user\chuankou.c(17): error: #20: identifier "GPIO_PC5_U7Tx" is undefined