analogWrite doesn't work but digitalWrite does on esp32 when BLDC used

[nagybenja]

Hey,
I am using an esp32 Wroom 32 dev board and I'm having trouble controlling a led with the analogWrite() function. I am using the simpleFOC libary to control a BLDC and it is working just fine. When I write a code only to fade the led it is working. But when I control the BLDC, the analogWrite function seems to stop working, only digitalWrite works. If I change the led control in this code to digitalWrite functions it will work. Does anyone has an idea what is going on?

#include <SimpleFOC.h>
MagneticSensorI2C sensor = MagneticSensorI2C(AS5600_I2C);
BLDCMotor motor = BLDCMotor(11);
BLDCDriver6PWM driver = BLDCDriver6PWM(26, 25, 27, 32, 12, 33);
float target_voltage = 0.5;
Commander command = Commander(Serial);
void doTarget(char* cmd) { command.scalar(&target_voltage, cmd); }

void setup() {

  pinMode(4,OUTPUT);
  analogWrite(4,50);

  sensor.init();
  motor.linkSensor(&sensor);
  driver.voltage_power_supply = 5;
  driver.init();
  motor.linkDriver(&driver);
  motor.voltage_sensor_align = 5;
  motor.foc_modulation = FOCModulationType::SpaceVectorPWM;
  motor.controller = MotionControlType::torque;
  Serial.begin(115200);
  motor.useMonitoring(Serial);
  motor.init();
  motor.initFOC();
  command.add('T', doTarget, "target voltage");
  Serial.println(F("Motor ready."));
  Serial.println(F("Set the target voltage using serial terminal:"));
  _delay(1000);
}

void loop() {
  motor.loopFOC();
  motor.move(target_voltage);
  analogWrite(4,100)
  command.run();
}

[sterretje]

@nagybenja

esp32 Wroom 32 dev board

The Nano ESP32 section of the forum is specific for the Arduino Nano ESP32. Hence your topic has been moved to a more suitable location on the forum.

[johnerrington]

Without looking closely at the library I can only guess.
The analogWrite function uses one of the timers to generate PWM.
Maybe the library uses the same timer?

[nagybenja]

Yes, that was the problem. I used the ledc library for separate timing and now it works flawlessly. Thank you!