0563e42dc9
- Added new board - Extracted ST7789 driver and backlight PWM driver into separate subprojects - Refactored T-Deck to use the shared driver modules - Fix bug in WiFi service: searching for APs was broken
63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
#include <Tactility/Log.h>
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#include <driver/ledc.h>
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#include <driver/gpio.h>
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#define TAG "pwm_backlight"
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namespace driver::pwmbacklight {
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static bool isBacklightInitialized = false;
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static gpio_num_t backlightPin = GPIO_NUM_NC;
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bool init(gpio_num_t pin) {
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backlightPin = pin;
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TT_LOG_I(TAG, "Init");
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ledc_timer_config_t ledc_timer = {
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.speed_mode = LEDC_LOW_SPEED_MODE,
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.duty_resolution = LEDC_TIMER_8_BIT,
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.timer_num = LEDC_TIMER_0,
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.freq_hz = 4000,
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.clk_cfg = LEDC_AUTO_CLK,
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.deconfigure = false
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};
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if (ledc_timer_config(&ledc_timer) != ESP_OK) {
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TT_LOG_E(TAG, "Timer config failed");
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return false;
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}
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ledc_channel_config_t ledc_channel = {
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.gpio_num = backlightPin,
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.speed_mode = LEDC_LOW_SPEED_MODE,
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.channel = LEDC_CHANNEL_0,
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.intr_type = LEDC_INTR_DISABLE,
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.timer_sel = LEDC_TIMER_0,
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.duty = 0,
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.hpoint = 0,
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.sleep_mode = LEDC_SLEEP_MODE_NO_ALIVE_NO_PD,
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.flags = {
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.output_invert = 0
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}
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};
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if (ledc_channel_config(&ledc_channel) != ESP_OK) {
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TT_LOG_E(TAG, "Channel config failed");
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}
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isBacklightInitialized = true;
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return true;
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}
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bool setBacklightDuty(uint8_t duty) {
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if (!isBacklightInitialized) {
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TT_LOG_E(TAG, "Not initialized");
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return false;
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}
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return ledc_set_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, duty) == ESP_OK &&
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ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0) == ESP_OK;
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}
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}
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