96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
#include "dvp.h"
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#include "ch32v30x_dvp.h"
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#include "eth_driver.h"
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#include "string.h"
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__attribute__((aligned(4))) uint8_t DMA_LineBuf0[BYTES_PER_LINE];
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__attribute__((aligned(4))) uint8_t DMA_LineBuf1[BYTES_PER_LINE];
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volatile uint8_t Line_Ready_Flag = 0;
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volatile uint8_t *Ready_Line_Ptr = NULL;
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volatile uint32_t current_line_idx = 0;
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static uint32_t frame_count = 0;
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extern u8 socket[];
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extern volatile uint32_t sys_tick_ms;
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void DVP_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure = {0};
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NVIC_InitTypeDef NVIC_InitStructure = {0};
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC, ENABLE);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DVP, ENABLE);
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_9 | GPIO_Pin_10;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_11;
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_8 | GPIO_Pin_9;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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NVIC_InitStructure.NVIC_IRQChannel = DVP_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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DVP_Cfg(DVP_DMA_Disable, DVP_FLAG_FIFO_RESET_Enable, DVP_RX_RESET_Enable);
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DVP_Mode(RB_DVP_D8_MOD, Video_Mode);
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DVP->CR0 &= ~(RB_DVP_P_POLAR | RB_DVP_V_POLAR | RB_DVP_H_POLAR);
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DVP->DMA_BUF0 = (uint32_t)DMA_LineBuf0;
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DVP->DMA_BUF1 = (uint32_t)DMA_LineBuf1;
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DVP->ROW_NUM = 1;
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DVP->COL_NUM = BYTES_PER_LINE;
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DVP_INTCfg(ENABLE, RB_DVP_IE_STR_FRM | RB_DVP_IE_ROW_DONE);
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DVP_Cfg(DVP_DMA_Enable, DVP_FLAG_FIFO_RESET_Disable, DVP_RX_RESET_Disable);
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DVP->CR0 |= RB_DVP_ENABLE;
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}
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#define PROTOCOL_HEADER_RESERVE 64
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__attribute__((aligned(4))) uint8_t FrameBuffer[SENSOR_HEIGHT][BYTES_PER_LINE];
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volatile uint8_t Frame_Ready_Flag = 0;
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volatile uint32_t Ready_Frame_Count = 0;
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void DVP_Task(void)
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{
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if (!Line_Ready_Flag) return;
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NVIC_DisableIRQ(DVP_IRQn);
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uint8_t *line = (uint8_t *)Ready_Line_Ptr;
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uint32_t idx = current_line_idx;
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Line_Ready_Flag = 0;
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NVIC_EnableIRQ(DVP_IRQn);
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if (idx < SENSOR_HEIGHT)
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{
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memcpy(FrameBuffer[idx], line, BYTES_PER_LINE);
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if (idx == SENSOR_HEIGHT - 1)
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{
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Frame_Ready_Flag = 1;
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Ready_Frame_Count = frame_count;
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}
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}
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}
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void DVP_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
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void DVP_IRQHandler(void)
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{
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if (DVP->IFR & RB_DVP_IF_STR_FRM)
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{
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DVP->IFR = RB_DVP_IF_STR_FRM;
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current_line_idx = 0;
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frame_count++;
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}
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if (DVP->IFR & RB_DVP_IF_ROW_DONE)
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{
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DVP->IFR = RB_DVP_IF_ROW_DONE;
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Ready_Line_Ptr = (DVP->CR1 & RB_DVP_BUF_TOG) ? DMA_LineBuf0 : DMA_LineBuf1;
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current_line_idx++;
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Line_Ready_Flag = 1;
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}
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}
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