Unable to set duty cycle to zero about teensy_slow_pwm HOT 2 CLOSED

On Fri, Nov 4, 2022 at 1:13 PM Khoi Hoang ***@***.***> wrote: Hi @snagaitsev <https://github.com/snagaitsev> It seems that you didn't use the higher uS resolution (default is mS) causing the counter to be imperfect. Try to add #define USING_MICROS_RESOLUTION true before #include "Teensy_Slow_PWM.h" such as in your modified code /* Slow PWM test*/ #define USING_MICROS_RESOLUTION true #include "Teensy_Slow_PWM.h" #define HW_TIMER_INTERVAL_MS 0.01f #define HW_TIMER_INTERVAL_FREQ 100000L #define PIN_COUNT 16 int ssr0 = 3;int ssr1 = 2;int ssr2 = 5;int ssr3 = 4;int ssr4 = 7;int ssr5 = 6;int ssr6 = 9;int ssr7 = 8;int ssr8 = 11;int ssr9 = 10;int ssr10 = 14;int ssr11 = 12;int ssr12 = 18;int ssr13 = 15;int ssr14 = 22;int ssr15 = 19; // these are in ssr orderint pins[] = { 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 14, 12, 18, 15, 22, 19 }; // Init Teensy timer TEENSY_TIMER_1 TeensyTimer ITimer(TEENSY_TIMER_1);// Init Teensy_SLOW_PWM, each can service 16 different ISR-based PWM channels Teensy_SLOW_PWM ISR_PWM; void TimerHandler() { ISR_PWM.run(); } int channels[PIN_COUNT]; float dutyCycles[PIN_COUNT]; float freq = 50.0f; // the setup routine runs once when you press reset:void setup() { Serial.begin(115200); // Must be after attachInterrupt() #if 0 // initialize the digital pin as an output. for (int i = 0; i < PIN_COUNT; i++) { pinMode(pins[i], OUTPUT); dutyCycles[i] = 0.0f; channels[i] = ISR_PWM.setPWM(pins[i], freq, dutyCycles[i]); } #endif if (ITimer.attachInterrupt(HW_TIMER_INTERVAL_FREQ, TimerHandler)) { Serial.println("Timer is good"); } else { Serial.println("Timer is bad"); } // initialize the digital pin as an output. for (int i = 0; i < PIN_COUNT; i++) { pinMode(pins[i], OUTPUT); dutyCycles[i] = 50.0f; channels[i] = ISR_PWM.setPWM(pins[i], freq, dutyCycles[i]); } // Display 50% for 5s delay(5000); for (int i = 0; i < PIN_COUNT; i++) { pinMode(pins[i], OUTPUT); dutyCycles[i] = 0.0; ISR_PWM.modifyPWMChannel(channels[i], pins[i], freq, dutyCycles[i]); } } bool dutySwitch = false; // the loop routine runs over and over again forever:void loop() { delay(2000); } — Reply to this email directly, view it on GitHub <#1 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AKJ6SO4JIRBXCKFHJN2H6WDWGVG5VANCNFSM6AAAAAARXNCUUI> . You are receiving this because you were mentioned.Message ID: ***@***.***>