paulM_projects/motorized_fader
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changed ReadADC() into ReadFader(). Added ReadSpeed() function and documentation.

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jakeg00dwin 2025-02-14 13:57:52 -08:00
parent a88fae412e
commit 724237147f
2 changed files with 26 additions and 6 deletions
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11
inc/main.h
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@ -42,6 +42,7 @@
#define PWM_PIN1 PB0 // Pin 5 - Motor PWM 1 #define PWM_PIN1 PB0 // Pin 5 - Motor PWM 1
#define PWM_PIN2 PB1 // Pin 6 - Motor PWM 2 #define PWM_PIN2 PB1 // Pin 6 - Motor PWM 2
#define ADC_PIN PB3 // Pin 2 - Fader position reading #define ADC_PIN PB3 // Pin 2 - Fader position reading
#define SPEED_PIN PB2 // Pin 7/ADC1
#define BUTTON_PIN PB4 // Pin 3 - Button input #define BUTTON_PIN PB4 // Pin 3 - Button input
@ -97,9 +98,15 @@ void InitProg(void);
/** /**
* @brief Reads the ADC pin * @brief Reads the ADC pin from the fader.
*/ */
uint16_t ReadADC(void); uint16_t ReadFader(void);
/**
* @brief Reads the ADC value from the Speed pot.
*/
uint16_t ReadSpeed(void);
/** /**

21
src/main.c
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@ -83,7 +83,20 @@ void InitProg(void) {
InitTimer0(); InitTimer0();
} }
uint16_t ReadADC(void) { uint16_t ReadSpeed(void) {
// Initialize ADC
ADMUX = (0 << MUX1) | (1 << MUX0); // Select ADC1 (PB2)
ADCSRA = (1 << ADEN) | (1 << ADPS1) | (1 << ADPS0); // Enable ADC, prescaler 8
ADCSRA |= (1 << ADSC); // Start conversion
while (ADCSRA & (1 << ADSC)) {
} // Wait for conversion to finish
return ADC;
}
//change to ReadFader(void)
uint16_t ReadFader(void) {
// Initialize ADC // Initialize ADC
ADMUX = (1 << MUX1) | (1 << MUX0); // Select ADC3 (PB3) ADMUX = (1 << MUX1) | (1 << MUX0); // Select ADC3 (PB3)
ADCSRA = (1 << ADEN) | (1 << ADPS1) | (1 << ADPS0); // Enable ADC, prescaler 8 ADCSRA = (1 << ADEN) | (1 << ADPS1) | (1 << ADPS0); // Enable ADC, prescaler 8
@ -108,7 +121,7 @@ static inline uint8_t diff(uint8_t a, uint8_t b) {
} }
void MotorSetSavePos() { void MotorSetSavePos() {
uint8_t pos = (uint8_t)(ReadADC() >> 2); uint8_t pos = (uint8_t)(ReadFader() >> 2);
eeprom_write_byte((uint8_t *)ROM_SS1_ADR, pos); eeprom_write_byte((uint8_t *)ROM_SS1_ADR, pos);
return; return;
} }
@ -119,10 +132,10 @@ uint8_t MotorGetSavedPos(void) {
void MotorMoveTo(uint8_t target) { void MotorMoveTo(uint8_t target) {
uint8_t pos = (uint8_t)(ReadADC() >> 2); uint8_t pos = (uint8_t)(ReadFader() >> 2);
while (diff(target, pos) > 8) { while (diff(target, pos) > 8) {
pos = (uint8_t)(ReadADC() >> 2); pos = (uint8_t)(ReadFader() >> 2);
if (target > pos) { if (target > pos) {
MotorMove(1); MotorMove(1);
} else { } else {