🤖Have you ever tried Chat.M5Stack.com before asking??😎
    M5Stack Community
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search
    • Register
    • Login

    M5Stamp C3 programming examples

    Modules
    6
    14
    21.3k
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • T
      trrevvorr
      last edited by

      These examples would be very much appreciated. I've been having trouble getting ESP-IDF or Arduino IDE to flash any code to my M5Stamp-C3 since there are virtually no examples of how to do this on the internet.

      ajb2k3A 1 Reply Last reply Reply Quote 0
      • ajb2k3A
        ajb2k3 @trrevvorr
        last edited by

        @trrevvorr That is the problem I am finding.
        IDF is a nightmare to install and configure.

        UIFlow, so easy an adult can learn it!
        If I don't know it, be patient!
        I've ether not learned it or am too drunk to remember it!
        Author of the WIP UIFlow Handbook!
        M5Black, Go, Stick, Core2, and so much more it cant be fit in here!

        1 Reply Last reply Reply Quote 0
        • S
          silentmonkey
          last edited by

          @trrevvorr said in M5Stamp C3 programming examples:

          M5Stamp-C3

          While I realise it's a different core but I've been having fun with the M5Stamp-Pico which does use the same LED controller so I wonder if this will help with the ops question.

          I use the Arduino-IDE and the FastLed module. I've attached a snippet of code where the LED is White while searching for the wifi and Green when connected. It then flashes Blue when data is received.

          More about FastLed can be found here:
          https://github.com/FastLED/FastLED
          https://github.com/FastLED/FastLED/wiki/Pixel-reference#chsv

          // Load Wi-Fi, Servo and Led libraries
          #include <WiFi.h>
          #include <ESP32Servo.h>
          #include <FastLED.h>
          #include <Preferences.h>

          // number of leds on board and data pin
          #define NUM_LEDS 1
          #define LED_DATA_PIN 27
          // Define the array of leds
          CRGB leds[NUM_LEDS];

          //Create Servo Object
          Servo servo;

          // Setup network credentials
          const char* ssid = "SMCS";
          const char* password = "**********";

          // Set web server port number to 80
          WiFiServer server(80);

          // Variable to store the HTTP request
          String header;

          // Auxiliar variables to store the current output state
          String SliderValue = "0"; // Contains returned value of Speed Slider range 0-1023
          int Speed = 180; // Contains Integer value of Speed Slider range 0-180 deg for Servo
          int OldSpeed = 180; // Contains previous speed
          int Index; // String index

          unsigned long time_now = 0; // Used to calculate time outs
          String EngineName = "Millie"; // Engine name

          // Assign output variables to GPIO pins

          // M5 Stamp pin to GPIO Mapping used by Train Controller
          // 5v positive 5 volt supply
          // Gnd Ground Supply
          // G32 GPI32 Servo Pin

          const int ServoPin = G32; // Servo Drive GPI32

          // Current time
          unsigned long currentTime = millis();
          // Previous time
          unsigned long previousTime = 0;
          // Define timeout time in milliseconds (example: 2000ms = 2s)
          const long timeoutTime = 2000;

          // Set-up
          void setup() {

          // Initialize the output variables as outputs
          // Start with motor Drive control
          servo.attach(ServoPin);

          // Start the serial monitor
          Serial.begin(115200);

          // Set up Fastled and turn it To White
          FastLED.addLeds<SK6812, LED_DATA_PIN, GRB>(leds, NUM_LEDS);
          leds[0] = CRGB::White;
          FastLED.show();

          // Connect to Wi-Fi network with SSID and password
          Serial.print("Connecting to ");
          Serial.println(ssid);
          WiFi.begin(ssid, password);
          while (WiFi.status() != WL_CONNECTED) {
          delay(500);
          Serial.print(".");
          }
          // Print local IP address and start web server
          leds[0] = CRGB::Green;
          FastLED.show();
          Serial.println("");
          Serial.println("WiFi connected.");
          Serial.println("IP address: ");
          Serial.println(WiFi.localIP());
          server.begin();

          }

          // Main program
          void loop() {
          WiFiClient client = server.available(); // Listen for incoming clients
          if (client) { // If a new client connects,
          leds[0] = CRGB::Blue; // Go Blue
          FastLED.show();
          Serial.println("New Client."); // print a message out in the serial port
          String currentLine = ""; // make a String to hold incoming data from the client

          ajb2k3A 1 Reply Last reply Reply Quote 0
          • ajb2k3A
            ajb2k3 @silentmonkey
            last edited by

            @silentmonkey said in M5Stamp C3 programming examples:

            @trrevvorr said in M5Stamp C3 programming examples:

            M5Stamp-C3

            While I realise it's a different core but I've been having fun with the M5Stamp-Pico which does use the same LED controller so I wonder if this will help with the ops question.

            I use the Arduino-IDE and the FastLed module. I've attached a snippet of code where the LED is White while searching for the wifi and Green when connected. It then flashes Blue when data is received.

            More about FastLed can be found here:
            https://github.com/FastLED/FastLED
            https://github.com/FastLED/FastLED/wiki/Pixel-reference#chsv

            // Load Wi-Fi, Servo and Led libraries
            #include <WiFi.h>
            #include <ESP32Servo.h>
            #include <FastLED.h>
            #include <Preferences.h>

            // number of leds on board and data pin
            #define NUM_LEDS 1
            #define LED_DATA_PIN 27
            // Define the array of leds
            CRGB leds[NUM_LEDS];

            //Create Servo Object
            Servo servo;

            // Setup network credentials
            const char* ssid = "SMCS";
            const char* password = "**********";

            // Set web server port number to 80
            WiFiServer server(80);

            // Variable to store the HTTP request
            String header;

            // Auxiliar variables to store the current output state
            String SliderValue = "0"; // Contains returned value of Speed Slider range 0-1023
            int Speed = 180; // Contains Integer value of Speed Slider range 0-180 deg for Servo
            int OldSpeed = 180; // Contains previous speed
            int Index; // String index

            unsigned long time_now = 0; // Used to calculate time outs
            String EngineName = "Millie"; // Engine name

            // Assign output variables to GPIO pins

            // M5 Stamp pin to GPIO Mapping used by Train Controller
            // 5v positive 5 volt supply
            // Gnd Ground Supply
            // G32 GPI32 Servo Pin

            const int ServoPin = G32; // Servo Drive GPI32

            // Current time
            unsigned long currentTime = millis();
            // Previous time
            unsigned long previousTime = 0;
            // Define timeout time in milliseconds (example: 2000ms = 2s)
            const long timeoutTime = 2000;

            // Set-up
            void setup() {

            // Initialize the output variables as outputs
            // Start with motor Drive control
            servo.attach(ServoPin);

            // Start the serial monitor
            Serial.begin(115200);

            // Set up Fastled and turn it To White
            FastLED.addLeds<SK6812, LED_DATA_PIN, GRB>(leds, NUM_LEDS);
            leds[0] = CRGB::White;
            FastLED.show();

            // Connect to Wi-Fi network with SSID and password
            Serial.print("Connecting to ");
            Serial.println(ssid);
            WiFi.begin(ssid, password);
            while (WiFi.status() != WL_CONNECTED) {
            delay(500);
            Serial.print(".");
            }
            // Print local IP address and start web server
            leds[0] = CRGB::Green;
            FastLED.show();
            Serial.println("");
            Serial.println("WiFi connected.");
            Serial.println("IP address: ");
            Serial.println(WiFi.localIP());
            server.begin();

            }

            // Main program
            void loop() {
            WiFiClient client = server.available(); // Listen for incoming clients
            if (client) { // If a new client connects,
            leds[0] = CRGB::Blue; // Go Blue
            FastLED.show();
            Serial.println("New Client."); // print a message out in the serial port
            String currentLine = ""; // make a String to hold incoming data from the client

            Thank you for the demo but alas the Pico and C3 are two different chips. The Pico runs on Tensilica cores while the C3 runs on a RISCV core.

            UIFlow, so easy an adult can learn it!
            If I don't know it, be patient!
            I've ether not learned it or am too drunk to remember it!
            Author of the WIP UIFlow Handbook!
            M5Black, Go, Stick, Core2, and so much more it cant be fit in here!

            1 Reply Last reply Reply Quote 0
            • felmueF
              felmue
              last edited by

              Hello @silentmonkey

              thank you for your idea. Unfortunately the FastLED library doesn't seem to be adapted for the ESP32C3 yet. At least a couple of days ago, when I tried to compile it for the ESP32C3, it wouldn't w/o error.

              What worked for me instead was the Adafruit_NeoPixel library.

              Thanks
              Felix

              GPIO translation table M5Stack / M5Core2
              Information about various M5Stack products.
              Code examples

              A 1 Reply Last reply Reply Quote 0
              • A
                AucT @felmue
                last edited by AucT

                @felmue Yes confirm. this latest version library works! Here is the blink code
                #include <Adafruit_NeoPixel.h>

                #define PIXELPIN 2
                #define NUMPIXELS 1

                Adafruit_NeoPixel pixel(NUMPIXELS, PIXELPIN, NEO_GRBW + NEO_KHZ400);

                void setup() {
                pixel.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
                pixel.clear(); // Set pixel colors to 'off'
                pixel.show();
                }

                void loop() {
                pixel.setPixelColor(0, pixel.Color(0, 0, 128));
                pixel.show();
                delay(1000);

                pixel.clear();
                pixel.show();
                delay(500);

                pixel.setPixelColor(0, pixel.Color(128, 0, 0));
                pixel.show();
                delay(1000);

                pixel.clear();
                pixel.show();
                delay(500);
                }

                T 1 Reply Last reply Reply Quote 1
                • T
                  trrevvorr @AucT
                  last edited by

                  @auct Thank you! After adding the Adafruit neopixel library to the arduino IDE, this worked great!

                  I'll also note that I had issues flashing code to the C3 with my Mac (running OSX Catalina with updated drivers) but using a Windows machine fixed that issue.

                  1 Reply Last reply Reply Quote 0
                  • T
                    trrevvorr
                    last edited by

                    I updated @auct's code to include the built in button as well:

                    #include <Adafruit_NeoPixel.h>
                    
                    #define BUTTON_PIN 3
                    #define PIXEL_PIN 2
                    #define NUM_PIXELS 1
                    
                    Adafruit_NeoPixel pixel(NUM_PIXELS, PIXEL_PIN, NEO_GRBW + NEO_KHZ400);
                    bool currentButtonPressed = false;
                    
                    void setup()
                    {
                       // set up serial out
                      Serial.begin(115200);
                    
                      // set up neopixel
                      pixel.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
                      pixel.clear(); // Set pixel colors to 'off'
                      pixel.show();
                      
                      // set up GPIO
                      pinMode(BUTTON_PIN, INPUT_PULLUP);
                    
                      // initial button pressed state
                      setPixelToCurrentButtonState();
                    }
                    
                    void loop()
                    {
                      // read button state (LOW when pressed)
                      bool newButtonPressed = digitalRead(BUTTON_PIN) == LOW;
                      setPixelStateIfChanged(newButtonPressed);
                    
                      delay(10); // debounce
                    }
                    
                    void setPixelStateIfChanged(bool newButtonPressed) {
                      if (newButtonPressed != currentButtonPressed) {
                        currentButtonPressed = newButtonPressed;
                        setPixelToCurrentButtonState();
                      }
                    }
                    
                    void setPixelToCurrentButtonState() {
                      if (currentButtonPressed) {
                        Serial.println("turning LED blue");
                        pixel.setPixelColor(0, pixel.Color(0, 0, 128));
                        pixel.show(); 
                      } else {
                        Serial.println("turning LED red");
                        pixel.setPixelColor(0, pixel.Color(128, 0, 0));
                        pixel.show(); 
                      }
                    }
                    
                    1 Reply Last reply Reply Quote 1
                    • ajb2k3A
                      ajb2k3
                      last edited by

                      I have an IDF demo ready but the OSX driver issue is driving me bonkers on Catalina and yet to get the demo uploaded to the C3

                      UIFlow, so easy an adult can learn it!
                      If I don't know it, be patient!
                      I've ether not learned it or am too drunk to remember it!
                      Author of the WIP UIFlow Handbook!
                      M5Black, Go, Stick, Core2, and so much more it cant be fit in here!

                      1 Reply Last reply Reply Quote 0
                      • felmueF
                        felmue
                        last edited by felmue

                        Hello @ajb2k3

                        What worked for me on macOS Big Sur 11.5.2 is using the ESP32C3 built-in USB via GPIO18 and GPIO19.

                        What also worked for me on macOS Big Sur 11.5.2 was downloading and installing this driver CH9102_VCP_SER_MacOS from here. After a reboot and plugging in M5StampC3 via USB this port show up /dev/cu.wchusbserial... (in addition to /dev/cu.usbmodem... which did not work).

                        Thanks
                        Felix

                        GPIO translation table M5Stack / M5Core2
                        Information about various M5Stack products.
                        Code examples

                        H 1 Reply Last reply Reply Quote 1
                        • H
                          HaSch @felmue
                          last edited by

                          @felmue said in M5Stamp C3 programming examples:

                          Hello @ajb2k3

                          What worked for me on macOS Big Sur 11.5.2 is using the ESP32C3 built-in USB via GPIO18 and GPIO19.

                          What also worked for me on macOS Big Sur 11.5.2 was downloading and installing this driver CH9102_VCP_SER_MacOS from here. After a reboot and plugging in M5StampC3 via USB this port show up /dev/cu.wchusbserial... (in addition to /dev/cu.usbmodem... which did not work).

                          Thanks
                          Felix

                          Hello Felix
                          read here for a possible solution.

                          1 Reply Last reply Reply Quote 0
                          • First post
                            Last post