Arduino Portenta H7

Tinkering with the Arduino Portenta H7.

Blink with dual M7-M4 cores

LL_RCC_ForceCM4Boot() must be called in M7 sketch to start M4 sketch

/* BlinkGreenM7.ino
   MIT License (c) Faure Systems <dev at faure dot systems>

   LL_RCC_ForceCM4Boot() must be called in M7 sketch to start M4 sketch

   Ref: https://www.arduino.cc/pro/tutorials/portenta-h7/por-ard-dcp
*/

// the setup function runs once when you press reset or power the board
void setup() {
  LL_RCC_ForceCM4Boot();
  // initialize digital pin LEDR as an output.
  pinMode(LEDG, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LEDG, LOW); // turn the red LED on (LOW is the voltage level)
  delay(450); // wait for 200 milliseconds
  digitalWrite(LEDG, HIGH); // turn the LED off by making the voltage HIGH
  delay(450); // wait for 200 milliseconds
}

/* BlinkBlueM4.ino
   MIT License (c) Faure Systems <dev at faure dot systems>
*/

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

// the loop function runs over and over again forever
void loop() {
   digitalWrite(LEDB, LOW); // turn the red LED on (LOW is the voltage level)
   delay(200); // wait for 200 milliseconds
   digitalWrite(LEDB, HIGH); // turn the LED off by making the voltage HIGH
   delay(200); // wait for 200 milliseconds
}

Simple web server on M7

Upload a stop sktech to M4: StopM4.ino

Change arduino-secrets.h:

# define SECRET_SSID "PortentaAccessPoint"
# define SECRET_PASS "123Qwerty"

Upload web server on M7: SimpleWebServerM7.ino

Start Arduino IDE monitor, then connect your computer to the PortentaAccessPoint WiFi network and open you browser for http://192.168.3.1

You can look at the HTTP traffic in Chrome sniffer:

Links

Portenta H7 board:

• Setting Up Portenta H7 For Arduino
• Portenta H7, the First STM32 Arduino Board to Conquer Industrial Applications
• Issues:
  • Portenta H7 (arduino-beta:mbed) - Hyphens in FQBN not supported? #771
  • Portenta H7 Linux - not working (Solved)

Arm Mbed OS:

• Full API list

MQTT on M7 WiFi client

Working on it

Author

Jean-Michel (Jim) FAURE (July 9th, 2020)

• company: FAURE SYSTEMS®
• mail: dev at faure dot systems
• github: fauresystems
• web: Faure●Systems