75 lines
2.0 KiB
C++
Executable File
75 lines
2.0 KiB
C++
Executable File
#include "bsp.h"
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#include "custom_prephrals.h"
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#include "prepherials.h"
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#include <cstdio>
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#include "ov2640.h"
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#include <cstring>
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//#define cam_i2c i2c3
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#define OV2640_I2C_ADDR 0x60
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#define PICTURE_BUFFER_SIZE 60000
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uint32_t picture[PICTURE_BUFFER_SIZE];
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int main() {
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system_init();
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setup_prepherials();
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setup_pins(), setup_timer(), cam_i2c.init();
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led3.set_high();
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led1.set_high();
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cam_resetb.set_high();
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cam_pdwn.set_low();
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delay.delay_ms(10);
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ov2640_start();
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led2.toggle();
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delay.delay_ms(100, true);
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dma10.init(86, DMA_DATA_WIDTH_32_BITS, DMA_DATA_WIDTH_32_BITS, DMA_ADDR_FIX,
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DMA_ADDR_INC, DMA_TYPE_PREPHERIAL,
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DMA_TYPE_MEMORY, PICTURE_BUFFER_SIZE * 5);
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dcmi.init_old();
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while (1) {
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dma10.dma_start((uint32_t) &DCMI->DR, (uint32_t) picture, 4 * PICTURE_BUFFER_SIZE);
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// first few frames may cause green screen, if so we can extend the Delay to skip them.
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delay_ms(100, true); // wait for camera to be ready -- skip first frame 12.5fps = 80ms
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dcmi.enable();
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dcmi.capture_enable();
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delay_s(2, true); // wait for picture to be captured then stop dma
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// dma_stop(dcmi_dma);
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// disable(dcmi_p);
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auto *tmp = (uint8_t *) picture;
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uint32_t i = 0;
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for (i = 0; i < 4 * PICTURE_BUFFER_SIZE - 1; i++) {
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if (tmp[i] == 0xff && tmp[i + 1] == 0xd9) {
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printf("%lu\n", i);
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break;
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}
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}
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cam_pdwn.set_high();
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cam_resetb.set_low();
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if (i == 4 * PICTURE_BUFFER_SIZE - 1)
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i = 0;
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// if (uart_send_massive(usart1_p, (uint8_t *) picture, i + 5) != HAL_OK)
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// printf("no enough space in uart buffer\n");
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memset(picture, 0, sizeof(picture));
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// delay_s(2, true);
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printf("%lu\n", i);
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// tim1.tim_out_enable();
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TIM1->CCER &= ~TIM_CCER_CC1E;
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led2.set_low();
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while (1) {
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asm volatile ("wfi");
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}
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}
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}
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