Maple Lesson 01 - Blinking LED

Objective Using Microduino-CoreSTM32 to control the on-board LED. Actually you can learn to how to use the Micrduino-CoreSTM32's I/O port. This is a basic skill you should master and for further study. Prerequisites Setting Up Maple IDE for Microduino-CoreSTM32] Equipment Microduino-CoreSTM32 Microduino-CoreSTM32 is a 32-bit ARM Cortex-M3 development board, based on STMicroelectronics' STM32F103CBT6. Other hardware equipment USB Data cable 1(one) piece Program Using delay() function： int led = 13;// Define the PIN void setup() { pinMode(led, OUTPUT); // Define the I/O port 13 as output } void loop() { digitalWrite(led, HIGH); //I/O port 13 output High. If the connection is high lighted,the LED will light, otherwise extinguished delay(1000); // delay 1s digitalWrite(led, LOW); //I/O port 13 output Low.If the connection is high lighted,the LED off, otherwise light. delay(1000); // delay 1s } Using function millis()：Return the number of milliseconds from start running Microduino program to now. int ledPin=13; #define TIME 1000 long time1=0,time2=0; void setup() { pinMode(ledPin,OUTPUT); } void loop() { if(millis()<time2+TIME) { digitalWrite(ledPin,HIGH); time1=millis(); } else { digitalWrite(ledPin,LOW); if(millis()>time1+TIME) time2=millis(); } } Using function millis () is better than the delay () function, less resource and fewer delays on the system. Download program method Choose the board type in "tools", the "Microduino-CoreSTM32 to Flash" if you want to run the program after reset the board, or "Microduino-CoreSTM32 to RAM" if you just want to test it for one time. Compile downloads Result After the download, you can see LED flashes once every 1s. Video