/* * Copyright (c) 2006-2023, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2023-03-26 luobeihai first version */ #include #include #include /* defined the LED1 pin: PD13 */ #define LED1_PIN GET_PIN(D, 13) int main(void) { uint32_t sysclock = 0; /* set LED1 pin mode to output */ rt_pin_mode(LED1_PIN, PIN_MODE_OUTPUT); /* Print system clock */ sysclock = RCM_ReadSYSCLKFreq(); rt_kprintf("System Clock: %d\n", sysclock); while (1) { rt_pin_write(LED1_PIN, PIN_HIGH); rt_thread_mdelay(500); rt_pin_write(LED1_PIN, PIN_LOW); rt_thread_mdelay(500); } }