millis does not work on attiny 13

[noName2005]

I'm using an attiny13a but when I select that option I get an error saying it can't find the board. when I program with attiny13 selected it works just fine. I'm also using a library to run a stepper motor with the attiny. Previously everything worked fine. I was able to run the stepper motor while also using millis. Im now working on creating one-wire communication between Arduino and the attiny13, but I noticed the program stops whenever millis is mentioned.

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include "iotool_attiny13a_lowlevel.h"

define STEPPER_SLEEP _delay_us(2000)

define address 2

int steps; int dig1; int dig2; int dig3; int dig4; int fin; int num;

//Millis unsigned long start; unsigned long endI; unsigned long waitAddress = 6000; unsigned long waitDigit = 18000; int initialize = 4000;

int main() { // --- setup --- PINMODE_PB0_OUTPUT; DIGITALWRITE_PB0_LOW; PINMODE_PB1_OUTPUT; DIGITALWRITE_PB1_LOW; PINMODE_PB2_OUTPUT; DIGITALWRITE_PB2_LOW; PINMODE_PB4_OUTPUT; DIGITALWRITE_PB4_LOW; PINMODE_PB3_INPUT; // PINMODE_PB4_OUTPUT; DIGITALWRITE_PB4_LOW; ADC_DISABLE;

// --- loop --- while (1) { loop(); } }

void stepperOff() { DIGITALWRITE_PB0_LOW; DIGITALWRITE_PB1_LOW; DIGITALWRITE_PB2_LOW; DIGITALWRITE_PB4_LOW; }

void stepper1() { DIGITALWRITE_PB4_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB4_LOW; }

void stepper2() { DIGITALWRITE_PB4_HIGH; DIGITALWRITE_PB2_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB4_LOW; DIGITALWRITE_PB2_LOW; }

void stepper3() { DIGITALWRITE_PB2_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB2_LOW; }

void stepper4() { DIGITALWRITE_PB1_HIGH; DIGITALWRITE_PB2_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB1_LOW; DIGITALWRITE_PB2_LOW; }

void stepper5() { DIGITALWRITE_PB1_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB1_LOW; }

void stepper6() { DIGITALWRITE_PB0_HIGH; DIGITALWRITE_PB1_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB0_LOW; DIGITALWRITE_PB1_LOW; }

void stepper7() { DIGITALWRITE_PB0_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB0_LOW; }

void stepper8() { DIGITALWRITE_PB4_HIGH; DIGITALWRITE_PB0_HIGH; STEPPER_SLEEP; DIGITALWRITE_PB4_LOW; DIGITALWRITE_PB0_LOW; }

//functions to read state of wire and count //int Read(int wait) { // int state; // int Lstate=0; // for(start=millis(); (millis()-start)<wait; ){ // if(DIGITALREAD_PB3_HIGH){ // state=1; // DIGITALWRITE_PB0_HIGH; // } // if(DIGITALREAD_PB3_LOW){ // state=0; // DIGITALWRITE_PB0_LOW; // } // if(state!=Lstate){ // if(DIGITALREAD_PB3_HIGH){ // num++; // }else{} // } // Lstate=state; // } // return num; //}

//functions to read state of wire and count //int Read(int wait){ // start=millis(); // int now; // while(now-start<wait){ // while(DIGITALREAD_PB3_LOW&&now-start<wait){ // DIGITALWRITE_PB0_LOW; // now=millis(); // } // while(DIGITALREAD_PB3_HIGH&&now-start<wait){ // DIGITALWRITE_PB0_HIGH; // now=millis(); // } // num++; // now=millis(); // } // return num; //}

void loop() { //test program to test millis DIGITALWRITE_PB1_HIGH; delay(500); DIGITALWRITE_PB1_LOW; delay(500); //dig1=Read(waitDigit); //for(start=millis(); (millis()-start)<4000; ){} //delay using millis (tried but failed) start = millis(); while ((start + 4000) > millis()) {} //other type of delay using millis (also failed) DIGITALWRITE_PB1_HIGH; delay(500); DIGITALWRITE_PB1_LOW; delay(500); // for(int i=0; i<dig1; i++){ // DIGITALWRITE_PB1_HIGH; // delay(1000); // DIGITALWRITE_PB1_LOW; // delay(1000); // } delay(60000); } `

When power is applied the LED connected to PB1 goes high 500ms then low 500ms, then it just stops instead of flashing again. As I previously said, millis has worked before with the stepper library. I think one of the newer updates to the DIY attiny programmer has done something weird or my programming is just trash and I missed something obvious.

library for stepper motor: https://github.com/iotool/IOTool_ATtiny13a_LowLevel

[sleemanj]

You are implementing your own main() therefore the millis timer is never established.Message ID: @.***>

[noName2005]

Is there a way to only establish millis timer? With an external library or something? I can not use void setup as the file sketch size gets too big.

[sleemanj]

No.  Use the menu options to determine what things to initialise to reduce size.