@@ -126,17 +126,31 @@ bool ledcAttachChannel(uint8_t pin, uint32_t freq, uint8_t resolution, uint8_t c
 return false;
 }
 } else {
-ledc_timer_config_t ledc_timer = {.speed_mode = group, .timer_num = timer, .duty_resolution = resolution, .freq_hz = freq, .clk_cfg = clock_source};
+ledc_timer_config_t ledc_timer;
+memset((void *)&ledc_timer, 0, sizeof(ledc_timer_config_t));
+ledc_timer.speed_mode = group;
+ledc_timer.timer_num = timer;
+ledc_timer.duty_resolution = resolution;
+ledc_timer.freq_hz = freq;
+ledc_timer.clk_cfg = clock_source;
+
 if (ledc_timer_config(&ledc_timer) != ESP_OK) {
 log_e("ledc setup failed!");
 return false;
 }
 
 uint32_t duty = ledc_get_duty(group, (channel % 8));
 
-ledc_channel_config_t ledc_channel = {
-.speed_mode = group, .channel = (channel % 8), .timer_sel = timer, .intr_type = LEDC_INTR_DISABLE, .gpio_num = pin, .duty = duty, .hpoint = 0
-};
+ledc_channel_config_t ledc_channel;
+memset((void *)&ledc_channel, 0, sizeof(ledc_channel_config_t));
+ledc_channel.speed_mode = group;
+ledc_channel.channel = (channel % 8);
+ledc_channel.timer_sel = timer;
+ledc_channel.intr_type = LEDC_INTR_DISABLE;
+ledc_channel.gpio_num = pin;
+ledc_channel.duty = duty;
+ledc_channel.hpoint = 0;
+
 ledc_channel_config(&ledc_channel);
 }
 
@@ -256,7 +270,13 @@ uint32_t ledcWriteTone(uint8_t pin, uint32_t freq) {
 
 uint8_t group = (bus->channel / 8), timer = ((bus->channel / 2) % 4);
 
-ledc_timer_config_t ledc_timer = {.speed_mode = group, .timer_num = timer, .duty_resolution = 10, .freq_hz = freq, .clk_cfg = clock_source};
+ledc_timer_config_t ledc_timer;
+memset((void *)&ledc_timer, 0, sizeof(ledc_timer_config_t));
+ledc_timer.speed_mode = group;
+ledc_timer.timer_num = timer;
+ledc_timer.duty_resolution = 10;
+ledc_timer.freq_hz = freq;
+ledc_timer.clk_cfg = clock_source;
 
 if (ledc_timer_config(&ledc_timer) != ESP_OK) {
 log_e("ledcWriteTone configuration failed!");
@@ -307,7 +327,13 @@ uint32_t ledcChangeFrequency(uint8_t pin, uint32_t freq, uint8_t resolution) {
 }
 uint8_t group = (bus->channel / 8), timer = ((bus->channel / 2) % 4);
 
-ledc_timer_config_t ledc_timer = {.speed_mode = group, .timer_num = timer, .duty_resolution = resolution, .freq_hz = freq, .clk_cfg = clock_source};
+ledc_timer_config_t ledc_timer;
+memset((void *)&ledc_timer, 0, sizeof(ledc_timer_config_t));
+ledc_timer.speed_mode = group;
+ledc_timer.timer_num = timer;
+ledc_timer.duty_resolution = resolution;
+ledc_timer.freq_hz = freq;
+ledc_timer.clk_cfg = clock_source;
 
 if (ledc_timer_config(&ledc_timer) != ESP_OK) {
 log_e("ledcChangeFrequency failed!");