#include "sys.h" int strlen(const char* str) { int i = 0; while(str[i] != '\0') { i++; } return i; } void log(const char* stuff) { uart_writen(uart0, stuff, strlen(stuff)); } int main() { led0->output = 37; while(1) { uint8_t c = uart_read(uart0); uart_write(uart0, c); } }