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esp32-sequencer
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add helper functions to convert between bpm and ms

main
rkcf 2023-01-28 10:39:55 -06:00
parent 13bf5f9635
commit 02139416b1
1 changed files with 20 additions and 2 deletions
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22
main/esp32-sequencer.c
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@ -25,6 +25,7 @@
/* Controls */
#define GPIO_MUTATE_BTN (9) // Mutate Button In
#define GPIO_TAP_TEMPO_BTN (10) // Tap Tempo Button In
static QueueHandle_t control_event_queue = NULL;
@ -45,8 +46,18 @@ gptimer_handle_t gate_blink_timer = NULL;
uint8_t sequence[SEQ_MAX_LEN] = {0};
uint8_t seq_len = SEQ_MAX_LEN;
static const uint32_t DEFAULT_BPM = 120;
static const char *TAG = "sequencer";
uint32_t bpm_to_ms(uint32_t bpm) {
return 60000 / bpm;
}
uint32_t ms_to_bpm(uint32_t ms) {
return 60000 / ms;
}
static void randomize_seq(uint8_t *sequence) {
for (uint8_t i = 0; i < SEQ_MAX_LEN; i++) {
sequence[i] = esp_random() % 2;
@ -73,7 +84,7 @@ 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);
ESP_LOGI(TAG, "Handling control from GPIO %" PRIu32 , gpio_num);
switch (gpio_num) {
case GPIO_MUTATE_BTN:
mutate_seq(sequence);
@ -91,6 +102,13 @@ static void controls_init(void) {
gpio_set_intr_type(GPIO_MUTATE_BTN, GPIO_INTR_NEGEDGE);
// Hook in handler for mutate button
gpio_isr_handler_add(GPIO_MUTATE_BTN, gpio_isr_handler, (void*)GPIO_MUTATE_BTN);
// Setup tap tempo Button
gpio_reset_pin(GPIO_TAP_TEMPO_BTN);
gpio_set_direction(GPIO_TAP_TEMPO_BTN, GPIO_MODE_INPUT);
gpio_set_intr_type(GPIO_TAP_TEMPO_BTN, GPIO_INTR_NEGEDGE);
// Hook in handler for tap tempo button
gpio_isr_handler_add(GPIO_TAP_TEMPO_BTN, gpio_isr_handler, (void *)GPIO_TAP_TEMPO_BTN);
}
static void clk_cv_off_alarm_cb(gptimer_handle_t timer, const gptimer_alarm_event_data_t *edata, void *user_data) {
@ -270,7 +288,7 @@ void app_main(void) {
blink_led(LEDC_CHANNEL_1); // blink gate triggered led
}
printf("%i", sequence[step]);
vTaskDelay(500 / portTICK_PERIOD_MS);
vTaskDelay(bpm_to_ms(DEFAULT_BPM)/ portTICK_PERIOD_MS);
}
printf("\n");