/* * Copyright (c) 2006-2023, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2023-01-11 luobeihai first version */ #include <rtthread.h> #include <rtdevice.h> #include <board.h> /* defined the LED2 pin: PE6 */ #define LED2_PIN GET_PIN(E, 6) int main(void) { uint32_t sysclock = 0; /* set LED2 pin mode to output */ rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT); /* Print system clock */ sysclock = RCM_ReadSYSCLKFreq(); rt_kprintf("System Clock: %d\n", sysclock); while (1) { rt_pin_write(LED2_PIN, PIN_HIGH); rt_thread_mdelay(500); rt_pin_write(LED2_PIN, PIN_LOW); rt_thread_mdelay(500); } }