Relevant links for this note:

• Schematic of the Prototype Subsystem Board V0.1

Material required

• Prototype subsystem board
• ESP-Prog, is a external programmer
• Arduino IDE installed

Getting started - Blink LED

The first example is to blink a led, that way we are going to verify that we are able to upload the code. The steps are:

1. Connect the ESP-Prog to the prototype subsystem board. In this picture is also connected the uCAN that is not required for this example:

2. Connect the ESP-Prog to the computer with a microUSB cable. You should be able to see the prototype system Power led high.
3. Go to arduino IDE, and upload the next code to the board. It is the ESP32-DevKit. The builtin led is connected to the GPIO36 of the ESP32S3.

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(36, OUTPUT);
  Serial.begin(9600);
}

// the loop function runs over and over again forever
void loop() {
  Serial.println("asdf");
  digitalWrite(36, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                      // wait for a second
  digitalWrite(36, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                      // wait for a second
}

4. You should be able to see the led blinking

Send messages over CAN network using the CFP library

The wiring is the next one: