120 lines
2.6 KiB
C
120 lines
2.6 KiB
C
#include <stdio.h>
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#include "pico/stdlib.h"
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#include "pico/time.h"
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#include "hardware/pwm.h"
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#include "hardware/adc.h"
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#include "CC_Charger.h"
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#include "pulse_generator.h"
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// digital definitions
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#define CUT_nEN_PIN 0
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// analog definitions
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#define GPIO29_ADC3_PIN 29
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#define GPIO29_ADC3_CHANNEL 3
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//OUTPUT PULSE PARAMETERS (times in usecs)
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#define OUTPUT_ON_TIME 20
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#define OUTPUT_OFF_TIME_MIN 64
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#define OUTPUT_OFF_TIME_MAX 512
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#define ISO_PULSE false
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#define CAP_VOLTAGE_SETPOINT 70
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//CC Charger Parameters (don't change unless you know what you're doing)
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#define CHARGER_CURRENT 850
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//Math stuff DO NOT EDIT
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#define CAP_VOLTAGE_PWM_LEVEL CAP_VOLTAGE_SETPOINT * 303 / 48
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// initiate GPIO pin 29, ADC channel 3
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void gpio29_adc3_init() {
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// initialize ADC
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adc_init();
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// make sure GPIO is high-impedance, no pull-ups
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adc_gpio_init(GPIO29_ADC3_PIN);
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}
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// read ADC value from GPIO pin 29 channel 3, and return the value as a 16-bit +integer
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uint16_t gpio29_adc3_read() {
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// select ADC channel
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adc_select_input(GPIO29_ADC3_CHANNEL);
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// read ADC value
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return adc_read();
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}
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bool cut_on_off_irq(repeating_timer_t *rt) {
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if(short_tripped) {
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if(gpio_get(CUT_nEN_PIN)) {
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short_tripped = false;
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short_alert_off();
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}
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} else {
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if(!gpio_get(CUT_nEN_PIN) && !cutting_enabled) {
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cutting_enabled = true;
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// read adc channel 3, and map value from OUTPUT_OFF_TIME_MIN to OUTPUT_OFF_TIME_MAX
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uint16_t OUTPUT_OFF_TIME = gpio29_adc3_read() * (OUTPUT_OFF_TIME_MAX - OUTPUT_OFF_TIME_MIN) / 4095 + OUTPUT_OFF_TIME_MIN;
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begin_output_pulses(OUTPUT_ON_TIME, OUTPUT_OFF_TIME, ISO_PULSE);
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} else if(gpio_get(CUT_nEN_PIN)) {
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cutting_enabled = false;
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disable_gate_driver();
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}
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}
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return true;
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}
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void default_gpio_callback(uint gpio, uint32_t event_mask) {
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gpio_acknowledge_irq(gpio, event_mask);
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return;
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}
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int main() {
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sleep_ms(1000);
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gpio29_adc3_init();
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CC_Charger_init(CHARGER_CURRENT, CAP_VOLTAGE_PWM_LEVEL); //Setup the CC Charger Outputs
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pulse_generator_init(70); //Setup Pulse generator
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gpio_init(CUT_nEN_PIN);
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gpio_set_dir(CUT_nEN_PIN, GPIO_IN);
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gpio_set_pulls(CUT_nEN_PIN, false, false);
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irq_set_enabled(IO_IRQ_BANK0, true);
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sleep_ms(1000);
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repeating_timer_t timer;
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add_repeating_timer_ms(100, cut_on_off_irq, NULL, &timer);
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while (true) {
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//All executed code is contained in interrupts / timers
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}
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} |