ESP32 Based Motor controller with inverted low side

[VTCrafter14]

Hello i want to control a bldc 3 phase sensored Motor and i have a esp32 with three u3115s mosfet drivers that invert the low side so that the Low Side Mosfet is active if the Lin from the u3115 ic is low and the high side is active if the Hin of the u3115s is High. Maybe is there a way to invert the low side outputs from the esp?
here is my code: #include <SimpleFOC.h>

// ------------------------ // Pins & Parameters // ------------------------ const int potiPin = 34; // analog input for potentiometer float target_velocity = 0;

// Hall sensor pins A, B, C + pole pairs HallSensor sensor(35, 36, 39, 15);

// 6PWM Driver for High- and Low-side MOSFETs BLDCDriver6PWM driver( 32, // U-phase High-side input 33, // U-phase Low-side input 25, // V-phase High-side input 26, // V-phase Low-side input 27, // W-phase High-side input 14 // W-phase Low-side input );

BLDCMotor motor(15);

// ISR routines for Hall signals void isrA() { sensor.handleA(); } void isrB() { sensor.handleB(); } void isrC() { sensor.handleC(); }

void setup() { Serial.begin(115200);

// Hall-Sensor initialization sensor.init(); sensor.enableInterrupts(isrA, isrB, isrC); motor.linkSensor(&sensor);

// Driver initialization driver.voltage_power_supply = 24; driver.pwm_frequency = 20000; driver.init(); motor.linkDriver(&driver);

// Motor FOC settings motor.foc_modulation = FOCModulationType::SpaceVectorPWM; motor.controller = MotionControlType::velocity; motor.voltage_limit = 6; // Volt motor.velocity_limit = 14.9; // rad/s (~6 km/h) motor.PID_velocity.P = 0.2; motor.PID_velocity.I = 10; motor.PID_velocity.D = 0; motor.LPF_velocity.Tf = 0.01;

// initialize motor and FOC motor.init(); motor.initFOC();

Serial.println("=== Poti-Controlled FOC Ready ==="); }

void readPoti() { int potiValue = analogRead(potiPin); // 0 - 4095 float potiNorm = (potiValue - 2048.0f) / 2048.0f; // Range -1.0 to +1.0 target_velocity = potiNorm * motor.velocity_limit; Serial.print("Target velocity: "); Serial.println(target_velocity); }

void loop() { motor.loopFOC(); readPoti(); motor.move(target_velocity); }

[runger1101001]

You can do it in 6-PWM mode by setting the build flag -DSIMPLEFOC_PWM_LOWSIDE_ACTIVE_HIGH=false

Setting build flags depends on your environment. In platformio, you can put them in the platformio.ini

Be careful setting these options and using drivers with inverted polarity - check your PWM outputs and dead-time carefully before connecting power to the driver, or you could have shoot-through and burn your FETs.