#include //driver/uart/uart.rs --rust function enum uart_port_io_addr { COM1 = 0x3f8, COM2 = 0x2f8, COM3 = 0x3e8, COM4 = 0x2e8, COM5 = 0x5f8, COM6 = 0x4f8, COM7 = 0x5e8, COM8 = 0x4E8, }; extern int c_uart_init(uint16_t port, uint32_t baud_rate); extern void c_uart_send(uint16_t port, char c); extern void c_uart_send_str(uint16_t port, const char *str);