options.h文件中:
// --- by customer
#define KITL_NONE
//#define KITL_SERIAL_UART0
//#define KITL_SERIAL_UART1
//#define KITL_USBSERIAL
//#define KITL_ETHERNET
改为:
// --- by customer
//#define KITL_NONE
#define KITL_SERIAL_UART0
//#define KITL_SERIAL_UART1
//#define KITL_USBSERIAL
//#define KITL_ETHERNET