paulM_projects/motorized_fader
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Adjusted file to use F_CPU after DIV8 and allow speed control during movement.

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jakeg00dwin 2025-02-20 15:45:29 -08:00
parent c2ed2cead0
commit 49d8ca037b
1 changed files with 15 additions and 11 deletions
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22
src/main.c
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@ -1,8 +1,10 @@
#ifndef F_CPU #ifndef F_CPU
#define F_CPU 4800000UL #error "F_CPU not defined: defaulting to 9.6MHz"
#define F_CPU 1200000UL
#endif #endif
#include "main.h" #include "main.h"
//#include "ADC.h"
#include <avr/eeprom.h> #include <avr/eeprom.h>
#include <avr/interrupt.h> #include <avr/interrupt.h>
#include <util/delay.h> #include <util/delay.h>
@ -49,6 +51,7 @@ int main() {
while (1) { while (1) {
UpdateButtonOutput(&btn1); UpdateButtonOutput(&btn1);
UpdateButtonInput(&btn1); UpdateButtonInput(&btn1);
//MotorMoveTo(0);
} }
return 0; return 0;
@ -85,6 +88,7 @@ void InitProg(void) {
uint8_t ReadSpeed(void) { uint8_t ReadSpeed(void) {
// Initialize ADC // Initialize ADC
ADMUX = (0 << MUX1) | (1 << MUX0); // Select ADC1 (PB2) ADMUX = (0 << MUX1) | (1 << MUX0); // Select ADC1 (PB2)
ADCSRA = (1 << ADEN) | (1 << ADPS1) | (1 << ADPS0); // Enable ADC, prescaler 8 ADCSRA = (1 << ADEN) | (1 << ADPS1) | (1 << ADPS0); // Enable ADC, prescaler 8
@ -94,10 +98,8 @@ uint8_t ReadSpeed(void) {
uint8_t val = (uint8_t)(ADC >> 2); uint8_t val = (uint8_t)(ADC >> 2);
// We want to set a minimum acceptable speed. //Map the speed value to the 100%-50% duty cycle range.
if (val < 32) { //val = (uint8_t)( (float)val / 255.0 ) * 100;
val = 32;
}
return val; return val;
} }
@ -139,11 +141,12 @@ uint8_t MotorGetSavedPos(void) {
void MotorMoveTo(uint8_t target) { void MotorMoveTo(uint8_t target) {
uint8_t on_delay = ReadFader(); uint8_t on_delay = ReadSpeed();
uint8_t off_delay = 255 - on_delay;
uint8_t pos = (uint8_t)(ReadFader() >> 2); uint8_t pos = (uint8_t)(ReadFader() >> 2);
uint8_t idx =0;
while (diff(target, pos) > 8) { while (diff(target, pos) > 8) {
on_delay = ReadSpeed();
pos = (uint8_t)(ReadFader() >> 2); pos = (uint8_t)(ReadFader() >> 2);
if (target > pos) { if (target > pos) {
MotorMove(1); MotorMove(1);
@ -152,11 +155,11 @@ void MotorMoveTo(uint8_t target) {
} }
// The delay ratio controlls the PWM waveforms. // The delay ratio controlls the PWM waveforms.
for(uint8_t i = 0; i < on_delay; i++){ for (idx = 0; idx < on_delay; idx++) {
_delay_us(MOTOR_PULSE); _delay_us(MOTOR_PULSE);
} }
MotorCoast(); MotorCoast();
for(uint8_t i = 0; i < off_delay; i++){ for (;idx < 255; idx++) {
_delay_us(MOTOR_PULSE); _delay_us(MOTOR_PULSE);
} }
} }
@ -165,6 +168,7 @@ void MotorMoveTo(uint8_t target) {
} }
// Using the compatable bool type. // Using the compatable bool type.
// The motor being used seems to stop working below a 50% duty cycle.
void MotorMove(uint8_t fwd) { void MotorMove(uint8_t fwd) {
if (fwd) { if (fwd) {
PORTB |= (1 << PWM_PIN1); PORTB |= (1 << PWM_PIN1);