122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include "driver/gpio.h"
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#include "esp_err.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_random.h"
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#include "driver/ledc.h"
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#include "hal/ledc_types.h"
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#define SEQ_MAX_LEN 8
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/* Inputs */
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// Clock In
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// Reset In
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/* Outputs */
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#define GPIO_CLK_OUT (7) // Clock Out
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#define GPIO_GATE_OUT (8) // Gate CV Out
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/* LED GPIO Pins */
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#define LEDC_CLK_OUT (5)
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#define LEDC_GATE_OUT (6)
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static void gpio_init(void) {
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// Setup Clock CV Output
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gpio_reset_pin(GPIO_CLK_OUT);
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gpio_set_direction(GPIO_CLK_OUT, GPIO_MODE_OUTPUT);
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// Setup Gate CV Output
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gpio_reset_pin(GPIO_GATE_OUT);
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gpio_set_direction(GPIO_GATE_OUT, GPIO_MODE_OUTPUT);
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}
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static void ledc_init(void) {
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// Setup LEDC PWM timer configuration
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ledc_timer_config_t ledc_timer = {
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.speed_mode = LEDC_LOW_SPEED_MODE,
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.timer_num = LEDC_TIMER_0,
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.duty_resolution = LEDC_TIMER_13_BIT,
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.freq_hz = 5000,
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.clk_cfg = LEDC_AUTO_CLK
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};
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ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));
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// Setup Clock LED
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ledc_channel_config_t ledc_clk_channel = {
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.channel = LEDC_CHANNEL_0,
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.gpio_num = LEDC_CLK_OUT,
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.speed_mode = LEDC_LOW_SPEED_MODE,
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.timer_sel = LEDC_TIMER_0,
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.intr_type = LEDC_INTR_DISABLE,
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.duty = 0,
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.hpoint = 0
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};
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ESP_ERROR_CHECK(ledc_channel_config(&ledc_clk_channel));
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// Setup Gate LED
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ledc_channel_config_t ledc_gate_channel = {
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.channel = LEDC_CHANNEL_1,
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.gpio_num = LEDC_GATE_OUT,
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.speed_mode = LEDC_LOW_SPEED_MODE,
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.timer_sel = LEDC_TIMER_0,
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.intr_type = LEDC_INTR_DISABLE,
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.duty = 0,
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.hpoint = 0
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};
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ESP_ERROR_CHECK(ledc_channel_config(&ledc_gate_channel));
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}
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void blink_led(ledc_channel_t channel) {
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ESP_ERROR_CHECK(ledc_set_duty(LEDC_LOW_SPEED_MODE, channel, 4095));
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ESP_ERROR_CHECK(ledc_update_duty(LEDC_LOW_SPEED_MODE, channel));
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vTaskDelay(10 / portTICK_PERIOD_MS);
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ESP_ERROR_CHECK(ledc_set_duty(LEDC_LOW_SPEED_MODE, channel, 0));
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ESP_ERROR_CHECK(ledc_update_duty(LEDC_LOW_SPEED_MODE, channel));
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}
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void pulse_cv(uint8_t gpio_num) {
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gpio_set_level(gpio_num, 1);
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vTaskDelay(10 / portTICK_PERIOD_MS);
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gpio_set_level(gpio_num, 0);
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}
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void gen_rand_seq(uint8_t *sequence) {
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for (uint8_t i = 0; i < SEQ_MAX_LEN; i++) {
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sequence[i] = esp_random() % 2;
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}
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}
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void app_main(void) {
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/* Initialize Peripherals */
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/* Initialize GPIO */
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gpio_init();
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/* Initialize Monitor LEDs */
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ledc_init();
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/* Initialize sequence */
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uint8_t sequence[SEQ_MAX_LEN] = {0};
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uint8_t seq_len = SEQ_MAX_LEN;
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/* Main Loop */
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while (1) {
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for (uint8_t step = 0; step < seq_len; step++) {
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blink_led(LEDC_CHANNEL_0); // blink clock led
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pulse_cv(GPIO_CLK_OUT);
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// if step has been set for sequence
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if (sequence[step] == 1) {
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blink_led(LEDC_CHANNEL_1); // blink gate triggered led
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pulse_cv(GPIO_GATE_OUT);
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}
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printf("%i", sequence[step]);
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vTaskDelay(500 / portTICK_PERIOD_MS);
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}
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gen_rand_seq(sequence);
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printf("\n");
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}
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}
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