87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/* Copyright 2018 Canaan Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <sys/unistd.h>
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#include <devices.h>
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#include "dvp_camera.h"
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#include "printf.h"
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enum _data_for
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{
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DATA_FOR_AI = 0,
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DATA_FOR_DISPLAY = 1,
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} ;
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enum _enable
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{
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DISABLE = 0,
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ENABLE = 1,
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} ;
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handle_t file_dvp;
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void sensor_restart()
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{
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dvp_set_signal(file_dvp, DVP_SIG_POWER_DOWN, 1);
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usleep(200 * 1000);
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dvp_set_signal(file_dvp, DVP_SIG_POWER_DOWN, 0);
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usleep(200 * 1000);
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dvp_set_signal(file_dvp, DVP_SIG_RESET, 0);
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usleep(200 * 1000);
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dvp_set_signal(file_dvp, DVP_SIG_RESET, 1);
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usleep(200 * 1000);
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}
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void on_irq_dvp(dvp_frame_event_t event, void* userdata)
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{
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camera_context_t *ctx = (camera_context_t *)userdata;
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//printk("ctx->gram_mux = %d \n", ctx->gram_mux);
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switch (event)
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{
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case VIDEO_FE_BEGIN:
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dvp_enable_frame(file_dvp);
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break;
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case VIDEO_FE_END:
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dvp_set_output_attributes(file_dvp, DATA_FOR_DISPLAY, VIDEO_FMT_RGB565, ctx->gram_mux ? ctx->lcd_image0->addr : ctx->lcd_image1->addr);
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ctx->dvp_finish_flag = 1;
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break;
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default:
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configASSERT(!"Invalid event.");
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}
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}
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void dvp_init(camera_context_t *ctx)
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{
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file_dvp = io_open("/dev/dvp0");
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configASSERT(file_dvp);
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sensor_restart();
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dvp_xclk_set_clock_rate(file_dvp, 20000000); /* 20MHz XCLK*/
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dvp_config(file_dvp, DVP_WIDTH, DVP_HIGHT, DISABLE);
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dvp_set_output_enable(file_dvp, DATA_FOR_AI, ENABLE);
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dvp_set_output_enable(file_dvp, DATA_FOR_DISPLAY, ENABLE);
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dvp_set_output_attributes(file_dvp, DATA_FOR_DISPLAY, VIDEO_FMT_RGB565, (void*)ctx->lcd_image0->addr);
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dvp_set_output_attributes(file_dvp, DATA_FOR_AI, VIDEO_FMT_RGB24_PLANAR, (void*)ctx->ai_image->addr);
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dvp_set_frame_event_enable(file_dvp, VIDEO_FE_END, DISABLE);
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dvp_set_frame_event_enable(file_dvp, VIDEO_FE_BEGIN, DISABLE);
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dvp_set_on_frame_event(file_dvp, on_irq_dvp, ctx);
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dvp_set_frame_event_enable(file_dvp, VIDEO_FE_END, ENABLE);
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dvp_set_frame_event_enable(file_dvp, VIDEO_FE_BEGIN, ENABLE);
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}
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