GD32VF103CBT6 Longan Nano Arduino blink code

gd32v_blink.c

/*
 * Blink
 * Turns on an LED on for one second,
 * then off for one second, repeatedly.
 */

#include <Arduino.h>

// Set LED_BUILTIN if it is not defined by Arduino framework
// #define LED_BUILTIN 2
void setup()
{
  // initialize LED digital pin as an output.
  pinMode(PA1, OUTPUT);
  pinMode(PA2, OUTPUT);
  pinMode(PC13, OUTPUT);
  digitalWrite(PA1, HIGH);
  digitalWrite(PA2, HIGH);
  digitalWrite(PC13, HIGH);
}

void loop()
{
  // turn the LED on (HIGH is the voltage level)
  digitalWrite(PA1, LOW);
  digitalWrite(PA2, HIGH);
  digitalWrite(PC13, HIGH);
  // wait for a second
  delay(1000);
  // turn the LED off by making the voltage LOW
  digitalWrite(PA1, HIGH);
  digitalWrite(PA2, LOW);
  digitalWrite(PC13, HIGH);
  // wait for a second
  delay(1000);
  digitalWrite(PA1, HIGH);
  digitalWrite(PA2, HIGH);
  digitalWrite(PC13, LOW);
  // wait for a second
  delay(1000);
}