Ken Van Hoeylandt
31 lines
993 B
C++
31 lines
993 B
C++
#include "tab_5_camera.h"
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#include <tactility/log.h>
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#include <esp_clock_output.h>
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#define TAG "Tab5"
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static esp_clock_output_mapping_handle_t camera_osc_handle = nullptr;
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// 24 MHz clock on GPIO 36 for the SC2356 MIPI CSI sensor, required before esp_video_init. Uses
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// SPLL (480 MHz) via esp_clock_output with divider 20 = 24 MHz exactly. This avoids any LEDC
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// clock source conflict with the display backlight.
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void tab5_camera_init() {
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if (camera_osc_handle != nullptr) {
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return;
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}
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if (esp_clock_output_start(CLKOUT_SIG_SPLL, GPIO_NUM_36, &camera_osc_handle) != ESP_OK) {
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LOG_E(TAG, "Camera OSC clock output start failed");
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return;
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}
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if (esp_clock_output_set_divider(camera_osc_handle, 20) != ESP_OK) {
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LOG_E(TAG, "Camera OSC clock divider set failed");
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esp_clock_output_stop(camera_osc_handle);
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camera_osc_handle = nullptr;
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return;
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}
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LOG_I(TAG, "Camera OSC 24MHz started on GPIO 36 (SPLL/20)");
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}
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