Hazard3/test/sim/hellow/main.c

#include "tb_cxxrtl_io.h"
#include "uart.h"

#define CLK_FREQ_MHZ 12

// __attribute__((optimize("O0"))) 
int main() {
  // Float stuff should all be compile-time. 115200 baud.
  uart_init();
  uart_clkdiv_baud(CLK_FREQ_MHZ, 9600);
  uart_puts("Hello, UART!\n");
  // Need to wait for completion, else we will terminate the simulation
  // while characters still in FIFO.
  uart_wait_done();

  // tb_puts("Hello world from Hazard3 + CXXRTL!\n");
  uint32_t addr = 0x40008000;
  uint32_t *point = (uint32_t *)addr;
  *point = 'C';
  return 123;
}