From aedbb7ef943afd52c0ce3b5eb3d1d73cbb5ffecc Mon Sep 17 00:00:00 2001
From: rkcf <rkcf@rkcf.me>
Date: Wed, 8 Feb 2023 15:26:02 -0600
Subject: [PATCH] Feat: add in ledc control

---
 main/esp32_rgb_rotary_encoder.c | 61 +++++++++++++++++++++++++++++++--
 1 file changed, 59 insertions(+), 2 deletions(-)

diff --git a/main/esp32_rgb_rotary_encoder.c b/main/esp32_rgb_rotary_encoder.c
index c94c3e0..b64cf9a 100644
--- a/main/esp32_rgb_rotary_encoder.c
+++ b/main/esp32_rgb_rotary_encoder.c
@@ -8,23 +8,76 @@
 #include "freertos/queue.h"
 #include "esp_log.h"
 #include "driver/pulse_cnt.h"
+#include "driver/ledc.h"
+#include "hal/ledc_types.h"
 #include "hal/pcnt_types.h"
 
 /* Pinouts */
 #define PCNT_A_PIN 4 /* Rotary Encoder A Pin */
 #define PCNT_B_PIN 5 /* Rotary Encoder B Pin */
 #define GPIO_BTN_PIN 6 /* Rotary Encoder switch */
+#define LEDC_R_PIN 7 /* Red LED */
+#define LEDC_G_PIN 15 /* Green LED */
+#define LEDC_B_PIN 16 /* Blue LED */
 
 /* Pulse Count Settings */
 #define PCNT_HIGH_LIMIT 2     /* 100 total steps */
 #define PCNT_LOW_LIMIT -2
-
+pcnt_unit_handle_t pcnt_unit;
 static QueueHandle_t pcnt_queue = NULL;
 
 static const char *TAG = "RE Demo"; /* logging tag */
 
-pcnt_unit_handle_t pcnt_unit;
 
+/* Initialize LEDC for RGB LEDS in encoder */
+static void ledc_init(void) {
+  ESP_LOGI(TAG, "Initializing LEDC Driver");
+  /* Setup LEDC PWM timer configuration */
+  ledc_timer_config_t ledc_timer = {
+    .speed_mode = LEDC_LOW_SPEED_MODE,
+    .timer_num = LEDC_TIMER_0,
+    .duty_resolution = LEDC_TIMER_13_BIT,
+    .freq_hz = 5000,
+    .clk_cfg = LEDC_AUTO_CLK
+  };
+  ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));
+
+  /* Setup Clock LED */
+  ledc_channel_config_t ledc_R_channel = {
+    .channel = LEDC_CHANNEL_0,
+    .gpio_num = LEDC_R_PIN,
+    .speed_mode = LEDC_LOW_SPEED_MODE,
+    .timer_sel = LEDC_TIMER_0,
+    .intr_type = LEDC_INTR_DISABLE,
+    .duty = 0,
+    .hpoint = 0
+  };
+  ESP_ERROR_CHECK(ledc_channel_config(&ledc_R_channel));
+
+  /* Setup Gate LED */
+  ledc_channel_config_t ledc_G_channel = {
+    .channel = LEDC_CHANNEL_1,
+    .gpio_num = LEDC_G_PIN,
+    .speed_mode = LEDC_LOW_SPEED_MODE,
+    .timer_sel = LEDC_TIMER_0,
+    .intr_type = LEDC_INTR_DISABLE,
+    .duty = 0,
+    .hpoint = 0
+  };
+  ESP_ERROR_CHECK(ledc_channel_config(&ledc_G_channel));
+
+  /* Setup Gate LED */
+  ledc_channel_config_t ledc_B_channel = {
+    .channel = LEDC_CHANNEL_2,
+    .gpio_num = LEDC_B_PIN,
+    .speed_mode = LEDC_LOW_SPEED_MODE,
+    .timer_sel = LEDC_TIMER_0,
+    .intr_type = LEDC_INTR_DISABLE,
+    .duty = 0,
+    .hpoint = 0
+  };
+  ESP_ERROR_CHECK(ledc_channel_config(&ledc_B_channel));
+}
 
 /* Pulse Counter Callback */
 static bool pcnt_cb(pcnt_unit_handle_t unit, const pcnt_watch_event_data_t *edata, void *user_ctx) {
@@ -100,6 +153,10 @@ void app_main(void){
 
   /* Initialize pulse counter */
   pcnt_init();
+  ledc_init();
+
+  /* ESP_ERROR_CHECK(ledc_set_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, 4095)); */
+  /* ESP_ERROR_CHECK(ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0)); */
 
   /* Log counter value */
   int event_count = 0;