PWM

main/Alim1000W.c

@@ -1,7 +1,9 @@
 #include <stdint.h>
 #include <stdio.h>
+#include <math.h>
 
 #include "BLEh.h"
+#include "driver/ledc.h"
 #include "esp_err.h"
 #include "esp_log.h"
 
@@ -9,6 +11,7 @@
 #include "freertos/projdefs.h"
 #include "freertos/task.h"
 #include "freertos/portmacro.h"
+#include "hal/ledc_types.h"
 #include "host/ble_uuid.h"
 
 #include "nvs_flash.h"
@@ -17,11 +20,12 @@
 
 #include "BLE.h"
 #include "measure.h"
+#include "PWM.h"
 
 #define TAG "Main"
 
 static uint32_t switching_frequency = CONFIG_SW_FREQ;
-static uint32_t duty_cycle = 50000000;
+static uint32_t duty_cycle = 0;
 
 static uint8_t adc_pins[] = {CONFIG_OUT_VOLT_PIN, CONFIG_OUT_CURR_PIN, CONFIG_PHASE1_CURR_PIN, CONFIG_PHASE2_CURR_PIN, CONFIG_PHASE3_CURR_PIN};
 
@@ -54,12 +58,17 @@ int on_char_write_handler(int svc_ind, int chr_ind, struct os_mbuf* os){
           ;
           rc = gatt_svr_chr_write_get_data(os, sizeof(val), sizeof(val), &val, NULL);
           switching_frequency = val;
-          // TODO update running val
+          ESP_ERROR_CHECK(ledc_set_freq(LEDC_LOW_SPEED_MODE, LEDC_TIMER_0, switching_frequency));
         break;
         case DUTY_CYCLE_CHR_ID:
           rc = gatt_svr_chr_write_get_data(os, sizeof(val), sizeof(val), &val, NULL);
           duty_cycle = val;
-          // TODO update running val
+
+          uint32_t max_value = 1 << CONFIG_SW_RES;
+          uint32_t raw_value = max_value * duty_cycle / 100000;
+          ESP_LOGI(TAG, "setting duty cycle %lu/%lu", raw_value, max_value);
+          ESP_ERROR_CHECK(ledc_set_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, raw_value));
+          ESP_ERROR_CHECK(ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0));
         break;
       }
     break;
@@ -72,6 +81,8 @@ void app_main(void){
   init_adc(adc_pins);
   init_adc_cali();
   adc_start();
+
+  init_pwm();
   
   nvs_flash_init();
 

main/BLE.c

@@ -32,7 +32,7 @@ struct dsc_content switching_frequency_dsc = {
 struct char_pres_format duty_cycle_char_pres_format = {
   .format = FORMAT_UINT32,
   .unit = UNITLESS_UNIT_UUID,
-  .exponent = -6,
+  .exponent = -3,
   .namespc = 1,
   .descrH = NSP_DESC_MAIN & 0xff,
   .descrL = (NSP_DESC_MAIN>>8) & 0xff,

main/CMakeLists.txt

@@ -1,4 +1,4 @@
 idf_component_register(
-  SRCS "Alim1000W.c" "BLE.c" "measure.c"
+  SRCS "Alim1000W.c" "BLE.c" "measure.c" "PWM.c"
   INCLUDE_DIRS "."
 )

main/PWM.c

@@ -0,0 +1,27 @@
+#include "driver/ledc.h"
+#include "hal/ledc_types.h"
+
+#include "sdkconfig.h"
+
+void init_pwm(){
+	ledc_timer_config_t ledc_timer = {
+		.speed_mode       = LEDC_LOW_SPEED_MODE,
+		.timer_num        = LEDC_TIMER_0,
+		.duty_resolution  = CONFIG_SW_RES,
+		.freq_hz          = CONFIG_SW_FREQ,
+		.clk_cfg          = LEDC_AUTO_CLK,
+	};
+
+	ESP_ERROR_CHECK(ledc_timer_config(&ledc_timer));
+
+	ledc_channel_config_t ledc_channel = {
+		.speed_mode     = LEDC_LOW_SPEED_MODE,
+		.channel        = 0,
+		.timer_sel      = LEDC_TIMER_0,
+		.intr_type      = LEDC_INTR_DISABLE,
+		.gpio_num       = CONFIG_PHASE1_CON_PIN,
+		.duty           = 0,
+		.hpoint         = 0,
+	};
+	ESP_ERROR_CHECK(ledc_channel_config(&ledc_channel));
+}

main/PWM.h

@@ -0,0 +1 @@
+void init_pwm();

sdkconfig

@@ -1659,8 +1659,8 @@ CONFIG_PHASE3_CURR_PIN=4
 #
 # Phases control signal pins
 #
-CONFIG_PHASE1_CON_PIN=6
-CONFIG_PHASE2_CON_PIN=7
+CONFIG_PHASE1_CON_PIN=7
+CONFIG_PHASE2_CON_PIN=6
 CONFIG_PHASE3_CON_PIN=8
 # end of Phases control signal pins
 # end of Pins definition

sdkconfig.old

@@ -1641,6 +1641,7 @@ CONFIG_WPA_MBEDTLS_TLS_CLIENT=y
 #
 # Pins definition
 #
+CONFIG_ADC_IN_PIN_NUM=5
 CONFIG_OUT_VOLT_PIN=2
 CONFIG_OUT_OVERVOLT_PIN=5
 CONFIG_OUT_EN_PIN=9
@@ -1669,7 +1670,7 @@ CONFIG_PHASE3_CON_PIN=8
 #
 CONFIG_SW_FREQ=800000
 CONFIG_SW_RES=6
-CONFIG_UPD_DELAY=100
+CONFIG_UPD_DELAY=1000
 # end of Controller parameters
 # end of This project config
 # end of Component config