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esp32-sequencer
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add mutate button and control handling functions

main
rkcf 2023-01-28 04:56:16 -06:00
parent 37d6a701bc
commit 1fbf695794
1 changed files with 66 additions and 19 deletions
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85
main/esp32-sequencer.c
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@ -3,10 +3,13 @@
#include "driver/gpio.h"
#include "driver/gptimer.h"
#include "esp_attr.h"
#include "esp_err.h"
#include "esp_random.h"
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "driver/ledc.h"
#include "hal/ledc_types.h"
@ -19,6 +22,11 @@
// Clock In
// Reset In
/* Controls */
#define GPIO_MUTATE_BTN (9) // Mutate Button In
static QueueHandle_t control_event_queue = NULL;
/* Outputs */
#define GPIO_CLK_OUT (7) // Clock Out
#define GPIO_GATE_OUT (8) // Gate CV Out
@ -33,6 +41,56 @@ gptimer_handle_t gate_cv_timer = NULL;
gptimer_handle_t clk_blink_timer = NULL;
gptimer_handle_t gate_blink_timer = NULL;
uint8_t sequence[SEQ_MAX_LEN] = {0};
uint8_t seq_len = SEQ_MAX_LEN;
static const char *TAG = "sequencer";
static void randomize_seq(uint8_t *sequence) {
for (uint8_t i = 0; i < SEQ_MAX_LEN; i++) {
sequence[i] = esp_random() % 2;
}
}
static void mutate_seq(uint8_t *sequence) {
ESP_LOGI(TAG, "Mutating Sequence");
// pick a step to mutate
uint8_t step = esp_random() % SEQ_MAX_LEN;
if (sequence[step] == 1) {
sequence[step] = 0;
} else if (sequence[step] == 0) {
sequence[step] = 1;
}
}
static void IRAM_ATTR gpio_isr_handler(void* arg) {
uint32_t gpio_num = (uint32_t)arg;
xQueueSendFromISR(control_event_queue, &gpio_num, NULL);
}
static void control_event_handler(void* arg) {
uint32_t gpio_num;
while (1) {
if(xQueueReceive(control_event_queue, &gpio_num, portMAX_DELAY)) {
ESP_LOGI(TAG, "Handling control from %" PRIu32 , gpio_num);
switch (gpio_num) {
case GPIO_MUTATE_BTN:
mutate_seq(sequence);
}
}
}
}
static void controls_init(void) {
// install gpio isr hservice
gpio_install_isr_service(0);
// Setup Mutate Button
gpio_reset_pin(GPIO_MUTATE_BTN);
gpio_set_direction(GPIO_MUTATE_BTN, GPIO_MODE_INPUT);
gpio_set_intr_type(GPIO_MUTATE_BTN, GPIO_INTR_POSEDGE);
// Hook in handler for mutate button
gpio_isr_handler_add(GPIO_MUTATE_BTN, gpio_isr_handler, (void*)GPIO_MUTATE_BTN);
}
static void clk_cv_off_alarm_cb(gptimer_handle_t timer, const gptimer_alarm_event_data_t *edata, void *user_data) {
gptimer_stop(clk_cv_timer);
@ -45,6 +103,8 @@ static void gate_cv_off_alarm_cb(gptimer_handle_t timer, const gptimer_alarm_eve
}
static void gpio_init(void) {
// Setup gpio control event queue
control_event_queue = xQueueCreate(10, sizeof(uint32_t));
// Setup Clock CV Output
gpio_reset_pin(GPIO_CLK_OUT);
gpio_set_direction(GPIO_CLK_OUT, GPIO_MODE_OUTPUT);
@ -181,33 +241,21 @@ static void pulse_cv(uint8_t gpio_num) {
}
}
static void randomize_seq(uint8_t *sequence) {
for (uint8_t i = 0; i < SEQ_MAX_LEN; i++) {
sequence[i] = esp_random() % 2;
}
}
static void mutate_seq(uint8_t *sequence) {
// pick a step to mutate
uint8_t step = esp_random() % SEQ_MAX_LEN;
if (sequence[step] == 1) {
sequence[step] = 0;
} else if (sequence[step] == 0) {
sequence[step] = 1;
}
}
void app_main(void) {
/* Initialize Peripherals */
/* Initialize GPIO */
gpio_init();
controls_init();
// Start task to handle control events
xTaskCreate(control_event_handler, "control event handler", 2048, NULL, 10, NULL);
/* Initialize Monitor LEDs */
ledc_init();
/* Initialize sequence */
uint8_t sequence[SEQ_MAX_LEN] = {0};
uint8_t seq_len = SEQ_MAX_LEN;
randomize_seq(sequence);
/* Main Loop */
while (1) {
for (uint8_t step = 0; step < seq_len; step++) {
@ -223,7 +271,6 @@ void app_main(void) {
printf("%i", sequence[step]);
vTaskDelay(500 / portTICK_PERIOD_MS);
}
mutate_seq(sequence);
printf("\n");
}