@world101

Uhh, sorry. Here the english version...

Hallo Felix,

now it's work, with byte array...

Hi Felix,

no problem. Will try to find the error...

Thanks for your help!!

Mhh, still not work. Don't know what's wrong...

Hi Felix,

Vielen dank für Deine Unterstützung ! Sprichst du deutsch ?

Thanks for your help. I will try both options, and will send a feedback here.

Hello,

i have a M5Core device.

Yes, i switch from TX23 -> to TX17, and RX19 -> to 16. Thanks for this tip.

But, now i have a last question, see screenshot below.
I Arduino i write with Serial2.write(...) the Hex. How can i do this in the UIFLOW ?!

Please see screenshots...

Hope you can help me, with my last question...

Thats not work. The code hang on the line set UART...

Whats wrong ??

Hi Gents,

i have a Problem with my Servo module. I buy the M5Core 12 channel Servo modul, and connect my servo on Port 0 from the Modul, but the Servo not work.

I have a running example for the Arduino, which works well with the Servo. I think the problem is my logic to move the code from Arduino Uno to M5Core 12 Channel Servo modul.

That is working with Arduino Uno:

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup()
{
  Serial.begin(9600);
  mySerial.begin(115200);
  Serial.println("start");
}

void servo(char ServoId, char Mode, char Degrees, char Speed)
{

  // Build checksum;
  int sum = ServoId + Mode + Degrees + Speed;

  char zero = 0;
  while (sum > 255)
  {
    sum -= 255;
  }

  //Head (Preamble)
  mySerial.write(0xFA); // Byte 1: Preamble;
  mySerial.write(0xAF); // Byte 2: Preamble;

  //Data
  mySerial.write(ServoId); // Byte 3: ServoID (See label of servo)
  mySerial.write(Mode);    // Byte 4: Command; for “go to command” we have = 0x01; we will try to find some other commands shortly
  mySerial.write(Degrees); // Byte 5: position = 120 + desired position in degrees;

  mySerial.write(Speed); // Byte 6: duration = duration in ms / 20
  mySerial.write(zero);  // Byte 7: 0x00 (? we don’t know what this is yet)
  mySerial.write(zero);  // Byte 8: 0x01 (? we don’t know what this is yet)

  //Check & End
  mySerial.write(sum);  // checksum = sum(byte 3 through 8) mod 256
  mySerial.write(0xED); // closure = 0xED (from “END”?)
}

void loop()
{
  servo(16, 1, 45, 40);
  delay(2000);

  servo(16, 1, 0, 10);
  delay(2000);
}

And here i try move my code to M5Stack with 12 channel Servo Modul, which are not work on Port 0. Have any a idea ?

#include <Arduino.h>
#include <M5Stack.h>
#include <Wire.h>

#define SERVO_ADDR 0x53
void setup()
{
    M5.begin(true, false, true);
    M5.Power.begin();
    M5.Lcd.setTextFont(4);
    M5.Lcd.setCursor(70, 100);
    M5.Lcd.print("Servo Example");

    Wire.begin(21, 22, 115200);
}

void servo(char ServoId, char Mode, char Degrees, char Speed)
{

    Wire.beginTransmission(SERVO_ADDR);
    Wire.write(0x00);

    // Build checksum;
    int sum = ServoId + Mode + Degrees + Speed;

    char zero = 0;
    while (sum > 255)
    {
        sum -= 255;
    }

    //Head (Preamble)
    Wire.write(0xFA); // Byte 1: Preamble;
    Wire.write(0xAF); // Byte 2: Preamble;
    Wire.write(ServoId); // Byte 3: ServoID (See label of servo)
    Wire.write(Mode);    // Byte 4: Command; for “go to command” we have = 0x01; we will try to find some other commands shortly
    Wire.write(Degrees); // Byte 5: position = 120 + desired position in degrees;
    Wire.write(Speed); // Byte 6: duration = duration in ms / 20
    Wire.write(zero);  // Byte 7: 0x00 (? we don’t know what this is yet)
    Wire.write(zero);  // Byte 8: 0x01 (? we don’t know what this is yet)
    Wire.write(sum);  // checksum = sum(byte 3 through 8) mod 256
    Wire.write(0xED); // closure = 0xED (from “END”?)


    Wire.endTransmission();
}

void loop()
{
    servo(16, 1, 45, 40);
    delay(2000);

    servo(16, 1, 0, 10);
    delay(2000);
}

Can anyone help me, please... ?

Any news on this ?

Same here. The M5 Docs are a nightmare!!
On every documentation, the syntax is wrong, and not work correctly!
😒