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122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "hal/cam_ll.h"
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#include "hal/cam_hal.h"
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#include "soc/soc_caps.h"
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#include "soc/cam_periph.h"
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/**
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* @brief Configure line number to trigger interrupt
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*
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* @param hal CAM object data pointer
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* @param num line number
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*
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* @return None
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*/
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static void cam_hal_set_line_int_num(cam_hal_context_t *hal, uint32_t num)
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{
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if (num > 0) {
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cam_ll_enable_hs_line_int(hal->hw, 1);
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cam_ll_set_line_int_num(hal->hw, num);
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} else {
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cam_ll_enable_hs_line_int(hal->hw, 0);
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cam_ll_set_line_int_num(hal->hw, 0);
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}
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}
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/**
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* @brief Configure V-SYNC filter threshold
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*
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* @param hal CAM object data pointer
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* @param num V-SYNC filter threshold
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*
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* @return None
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*/
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static void cam_hal_set_vsync_filter_num(cam_hal_context_t *hal, uint32_t num)
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{
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if (num > 0) {
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cam_ll_enable_vsync_filter(hal->hw, 1);
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cam_ll_set_vsync_filter_thres(hal->hw, num);
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} else {
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cam_ll_enable_vsync_filter(hal->hw, 0);
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cam_ll_set_vsync_filter_thres(hal->hw, 0);
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}
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}
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/**
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* @brief Initialize CAM hardware
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*
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* @param hal CAM object data pointer
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* @param config CAM configuration
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*
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* @return None
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*/
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void cam_hal_init(cam_hal_context_t *hal, const cam_hal_config_t *config)
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{
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memset(hal, 0, sizeof(cam_hal_context_t));
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hal->hw = CAM_LL_GET_HW(0);
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cam_ll_enable_stop_signal(hal->hw, 0);
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cam_ll_swap_dma_data_byte_order(hal->hw, config->byte_swap_en);
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cam_ll_reverse_dma_data_bit_order(hal->hw, 0);
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cam_ll_enable_vsync_generate_eof(hal->hw, 1);
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cam_hal_set_line_int_num(hal, 0);
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cam_hal_set_vsync_filter_num(hal, 0);
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cam_ll_enable_invert_pclk(hal->hw, 0);
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cam_ll_set_input_data_width(hal->hw, 8);
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cam_ll_enable_invert_de(hal->hw, 0);
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cam_ll_enable_invert_vsync(hal->hw, 0);
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cam_ll_enable_invert_hsync(hal->hw, 0);
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cam_ll_set_vh_de_mode(hal->hw, 0); // Disable vh_de mode default
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cam_ll_enable_rgb_yuv_convert(hal->hw, 0); // bypass conv module default
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}
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/**
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* @brief De-initialize CAM hardware
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*
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* @note Stop stream before deinit
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* @param hal CAM object data pointer
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*
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* @return None
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*/
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void cam_hal_deinit(cam_hal_context_t *hal)
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{
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cam_ll_stop(hal->hw);
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cam_ll_reset(hal->hw);
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cam_ll_fifo_reset(hal->hw);
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}
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/**
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* @brief Start CAM to receive frame data
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*
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* @param hal CAM object data pointer
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*
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* @return None
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*/
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void cam_hal_start_streaming(cam_hal_context_t *hal)
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{
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cam_ll_reset(hal->hw);
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cam_ll_fifo_reset(hal->hw);
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cam_ll_start(hal->hw);
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}
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/**
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* @brief Stop CAM receiving frame data
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*
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* @param hal CAM object data pointer
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*
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* @return None
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*/
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void cam_hal_stop_streaming(cam_hal_context_t *hal)
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{
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cam_ll_stop(hal->hw);
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}
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