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72 lines
2.0 KiB
72 lines
2.0 KiB
#include "driver/gpio.h" |
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#include "driver/ledc.h" |
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#include "esp_err.h" |
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#include "esp_log.h" |
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#include "esp_system.h" |
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#include "xclk.h" |
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#include "esp_camera.h" |
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#if defined(ARDUINO_ARCH_ESP32) && defined(CONFIG_ARDUHAL_ESP_LOG) |
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#include "esp32-hal-log.h" |
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#else |
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#include "esp_log.h" |
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static const char* TAG = "camera_xclk"; |
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#endif |
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#define NO_CAMERA_LEDC_CHANNEL 0xFF |
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static ledc_channel_t g_ledc_channel = NO_CAMERA_LEDC_CHANNEL; |
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esp_err_t xclk_timer_conf(int ledc_timer, int xclk_freq_hz) |
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{ |
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ledc_timer_config_t timer_conf; |
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timer_conf.duty_resolution = LEDC_TIMER_1_BIT; |
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timer_conf.freq_hz = xclk_freq_hz; |
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timer_conf.speed_mode = LEDC_LOW_SPEED_MODE; |
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#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 2, 0) |
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timer_conf.deconfigure = false; |
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#endif |
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#if ESP_IDF_VERSION_MAJOR >= 4 |
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timer_conf.clk_cfg = LEDC_AUTO_CLK; |
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#endif |
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timer_conf.timer_num = (ledc_timer_t)ledc_timer; |
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esp_err_t err = ledc_timer_config(&timer_conf); |
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if (err != ESP_OK) { |
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ESP_LOGE(TAG, "ledc_timer_config failed for freq %d, rc=%x", xclk_freq_hz, err); |
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} |
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return err; |
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} |
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esp_err_t camera_enable_out_clock(const camera_config_t* config) |
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{ |
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esp_err_t err = xclk_timer_conf(config->ledc_timer, config->xclk_freq_hz); |
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if (err != ESP_OK) { |
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ESP_LOGE(TAG, "ledc_timer_config failed, rc=%x", err); |
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return err; |
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} |
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g_ledc_channel = config->ledc_channel; |
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ledc_channel_config_t ch_conf = {0}; |
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ch_conf.gpio_num = config->pin_xclk; |
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ch_conf.speed_mode = LEDC_LOW_SPEED_MODE; |
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ch_conf.channel = config->ledc_channel; |
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ch_conf.intr_type = LEDC_INTR_DISABLE; |
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ch_conf.timer_sel = config->ledc_timer; |
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ch_conf.duty = 1; |
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ch_conf.hpoint = 0; |
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err = ledc_channel_config(&ch_conf); |
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if (err != ESP_OK) { |
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ESP_LOGE(TAG, "ledc_channel_config failed, rc=%x", err); |
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return err; |
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} |
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return ESP_OK; |
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} |
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void camera_disable_out_clock() |
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{ |
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if (g_ledc_channel != NO_CAMERA_LEDC_CHANNEL) { |
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ledc_stop(LEDC_LOW_SPEED_MODE, g_ledc_channel, 0); |
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g_ledc_channel = NO_CAMERA_LEDC_CHANNEL; |
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} |
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}
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