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62 lines
1.7 KiB
62 lines
1.7 KiB
5 years ago
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#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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#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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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 = 2;
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timer_conf.freq_hz = xclk_freq_hz;
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timer_conf.speed_mode = LEDC_HIGH_SPEED_MODE;
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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(camera_config_t* config)
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{
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periph_module_enable(PERIPH_LEDC_MODULE);
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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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ledc_channel_config_t ch_conf;
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ch_conf.gpio_num = config->pin_xclk;
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ch_conf.speed_mode = LEDC_HIGH_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 = 2;
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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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periph_module_disable(PERIPH_LEDC_MODULE);
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}
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