/********************************************************************************************************************* * COPYRIGHT NOTICE * Copyright (c) 2020,逐飞科技 * All rights reserved. * 技术讨论QQ群：三群：824575535 * * 以下所有内容版权均属逐飞科技所有，未经允许不得用于商业用途， * 欢迎各位使用并传播本程序，修改内容时必须保留逐飞科技的版权声明。 * * @file 7725_UART * @company 成都逐飞科技有限公司 * @author 逐飞科技(QQ3184284598) * @version 查看doc内version文件 版本说明 * @Software ADS v1.2.2 * @Target core TC264D * @Taobao https://seekfree.taobao.com/ * @date 2020-3-23 * @note OV7725接线定义： ------------------------------------ 模块管脚 单片机管脚 SDA(51的RX) 查看SEEKFREE_7725_UART.h文件内的OV7725_COF_UART_TX 宏定义 SCL(51的TX) 查看SEEKFREE_7725_UART.h文件内的OV7725_COF_UART_RX 宏定义 场中断(VSY) 查看SEEKFREE_7725_UART.h文件内的OV7725_UART_VSYNC_PIN 宏定义 行中断(HREF) 未使用，因此不接 像素中断(PCLK) 查看SEEKFREE_7725_UART.h文件内的OV7725_UART_PCLK_PIN 宏定义 数据口(D0-D7) 查看SEEKFREE_7725_UART.h文件内的OV7725_UART_DATA_PIN 宏定义 默认分辨率 160*120 默认FPS 50帧 ------------------------------------ ********************************************************************************************************************/ #include "IfxDma.h" #include "IfxScuEru.h" #include "zf_stm_systick.h" #include "zf_gpio.h" #include "zf_eru.h" #include "zf_eru_dma.h" #include "SEEKFREE_7725_UART.h" IFX_ALIGN(4) uint8 ov7725_uart_image_bin[OV7725_UART_H][OV7725_UART_W/8]; //定义存储接收图像的数组 uint8 ov7725_uart_image_dec[OV7725_UART_H][OV7725_UART_W]; //需要配置到摄像头的数据 uint16 OV7725_CFG[OV7725_CONFIG_FINISH][2]= { {OV7725_RESERVE, 0}, {OV7725_CONTRAST, 0x30}, //对比度0x00-0xff(改变这个值 间接实现阈值修改的效果) {OV7725_FPS, 50}, //帧率设置 只支持50 75 100 112 150 {OV7725_COL, OV7725_UART_W}, //只能是80 160 240 320 宽度和高度务必一一对应，例如宽度设置为80，高度只能设置为60。 {OV7725_ROW, OV7725_UART_H}, //只能是60 120 180 240 {OV7725_INIT, 0} //摄像头开始初始化 }; //从摄像头内部获取到的配置数据 uint16 OV7725_GET_CFG[OV7725_CONFIG_FINISH-1][2]= { {OV7725_RESERVE, 0}, {OV7725_CONTRAST, 0}, {OV7725_FPS, 0}, {OV7725_COL, 0}, {OV7725_ROW, 0} }; uint8 ov7725_uart_receive[3]; uint8 ov7725_uart_receive_num = 0; uint8 ov7725_uart_receive_flag = 0; //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风摄像头串口中断函数 // @param NULL // @return void // @since v1.0 // Sample usage: // @note 该函数在ISR文件 串口3中断程序被调用 //------------------------------------------------------------------------------------------------------------------- void ov7725_uart_callback(void) { uart_getchar(OV7725_COF_UART, &ov7725_uart_receive[ov7725_uart_receive_num]);; ov7725_uart_receive_num++; if(1==ov7725_uart_receive_num && 0XA5!=ov7725_uart_receive[0]) ov7725_uart_receive_num = 0; if(3 == ov7725_uart_receive_num) { ov7725_uart_receive_num = 0; ov7725_uart_receive_flag = 1; } } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风对摄像头内部寄存器进行写操作 // @param UARTN_enum 摄像头串口 // @param buff 需要写入的数据 // @return void // @since v1.0 // Sample usage: 调用该函数前请先初始化串口 //------------------------------------------------------------------------------------------------------------------- void ov7725_set_all_config(UARTN_enum uartn, uint16 buff[OV7725_CONFIG_FINISH-1][2]) { uint16 temp, i; uint8 send_buffer[4]; ov7725_uart_receive_flag = 0; //设置参数 具体请参看问题锦集手册 //开始配置摄像头并重新初始化 for(i=0; i>8; send_buffer[3] = (uint8)temp; uart_putbuff(uartn, send_buffer,4); systick_delay_ms(STM0, 2); } //等待摄像头初始化成功 while(!ov7725_uart_receive_flag); ov7725_uart_receive_flag = 0; while((0xff != ov7725_uart_receive[1]) || (0xff != ov7725_uart_receive[2])); //以上部分对摄像头配置的数据全部都会保存在摄像头上51单片机的eeprom中 } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风获取摄像头内部配置信息 // @param UARTN_enum 摄像头串口 // @param buff 需要读取的数据 // @return void // @since v1.0 // Sample usage: 调用该函数前请先初始化串口 //------------------------------------------------------------------------------------------------------------------- void ov7725_get_all_config(UARTN_enum uartn, uint16 buff[OV7725_CONFIG_FINISH-1][2]) { uint16 temp, i; uint8 send_buffer[4]; for(i=0; i>8; send_buffer[3] = (uint8)temp; uart_putbuff(uartn, send_buffer,4); //等待接受回传数据 while(!ov7725_uart_receive_flag); ov7725_uart_receive_flag = 0; buff[i][1] = ov7725_uart_receive[1]<<8 | ov7725_uart_receive[2]; } } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风获取摄像头固件版本 // @param NULL // @return void // @since v1.0 // Sample usage: 调用该函数前请先初始化串口 //------------------------------------------------------------------------------------------------------------------- uint16 ov7725_get_id(UARTN_enum uartn) { uint16 temp; uint8 send_buffer[4]; send_buffer[0] = 0xA5; send_buffer[1] = OV7725_GET_WHO_AM_I; temp = 0; send_buffer[2] = temp>>8; send_buffer[3] = (uint8)temp; uart_putbuff(uartn, send_buffer,4); //等待接受回传数据 while(!ov7725_uart_receive_flag); ov7725_uart_receive_flag = 0; return ((uint16)(ov7725_uart_receive[1]<<8) | ov7725_uart_receive[2]); } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风获取摄像头固件版本 // @param NULL // @return void // @since v1.0 // Sample usage: 调用该函数前请先初始化uart3 //------------------------------------------------------------------------------------------------------------------- uint16 ov7725_get_version(UARTN_enum uartn) { uint16 temp; uint8 send_buffer[4]; send_buffer[0] = 0xA5; send_buffer[1] = OV7725_GET_STATUS; temp = OV7725_GET_VERSION; send_buffer[2] = temp>>8; send_buffer[3] = (uint8)temp; uart_putbuff(uartn, send_buffer,4); //等待接受回传数据 while(!ov7725_uart_receive_flag); ov7725_uart_receive_flag = 0; return ((uint16)(ov7725_uart_receive[1]<<8) | ov7725_uart_receive[2]); } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风摄像头初始化(调用之后设置好相关中断函数即可采集图像) // @param NULL // @return 0 // @since v1.0 // Sample usage: //------------------------------------------------------------------------------------------------------------------- void ov7725_uart_init(void) { uint8 i; camera_type = CAMERA_BIN_UART;//设置连接摄像头类型 camera_buffer_addr = ov7725_uart_image_bin[0]; boolean interrupt_state = disableInterrupts(); uart_init (OV7725_COF_UART, 9600, OV7725_COF_UART_TX, OV7725_COF_UART_RX); //初始换串口 配置摄像头 enableInterrupts();//开启中断 ov7725_uart_receive_flag = 0; //等待摄像头上电初始化成功 方式有两种：延时或者通过获取配置的方式 二选一 //systick_delay_ms(STM0, 1000);//延时方式 ov7725_get_all_config(OV7725_COF_UART, OV7725_GET_CFG);//获取配置的方式 ov7725_uart_receive_flag = 0; ov7725_set_all_config(OV7725_COF_UART, OV7725_CFG); //获取配置便于查看配置是否正确 ov7725_get_all_config(OV7725_COF_UART, OV7725_GET_CFG); disableInterrupts(); //摄像头采集初始化 //初始化 数据引脚 for(i=0; i<8; i++) { gpio_init((PIN_enum)(OV7725_UART_DATA_PIN+i), GPI, 0, PULLUP); } eru_dma_init(OV7725_UART_DMA_CH, GET_PORT_IN_ADDR(OV7725_UART_DATA_PIN), camera_buffer_addr, OV7725_UART_PCLK_PIN, FALLING, OV7725_UART_DMA_NUM); eru_init(OV7725_UART_VSYNC_PIN, FALLING); //初始化场中断，并设置为下降沿触发中断 restoreInterrupts(interrupt_state); } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风摄像头场中断 // @param NULL // @return void // @since v1.0 // Sample usage: 在isr.c里面先创建对应的中断函数，然后调用该函数(之后别忘记清除中断标志位) //------------------------------------------------------------------------------------------------------------------- void ov7725_uart_vsync(void) { CLEAR_GPIO_FLAG(OV7725_UART_VSYNC_PIN); if(!ov7725_uart_finish_flag)//查看图像数组是否使用完毕，如果未使用完毕则不开始采集，避免出现访问冲突 { DMA_SET_DESTINATION(OV7725_UART_DMA_CH, camera_buffer_addr); dma_start(OV7725_UART_DMA_CH); } } uint8 ov7725_uart_finish_flag = 0; //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风摄像头DMA完成中断 // @param NULL // @return void // @since v1.0 // Sample usage: 在isr.c里面先创建对应的中断函数，然后调用该函数(之后别忘记清除中断标志位) //------------------------------------------------------------------------------------------------------------------- void ov7725_uart_dma(void) { CLEAR_DMA_FLAG(OV7725_UART_DMA_CH); ov7725_uart_finish_flag = 1; dma_stop(OV7725_UART_DMA_CH); } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风摄像头数据解压函数 // @param *data1 源地址 // @param *data2 目的地址 // @return void // @since v1.0 // Sample usage: Image_Decompression(da1,dat2[0]);//将一维数组dat1的内容解压到二维数组dat2里. //------------------------------------------------------------------------------------------------------------------- void image_decompression(uint8 *data1,uint8 *data2) { uint8 temp[2] = {0,255}; uint16 lenth = OV7725_UART_SIZE; uint8 i = 8; while(lenth--) { i = 8; while(i--) { *data2++ = temp[(*data1 >> i) & 0x01]; } data1++; } } //------------------------------------------------------------------------------------------------------------------- // @brief 小钻风摄像头未解压图像发送至上位机查看图像 // @param uartn 使用的串口号 // @param image 需要发送的图像地址 // @param width 图像的列 // @param height 图像的行 // @return void // @since v1.0 // Sample usage: 调用该函数前请先初始化uart2 //------------------------------------------------------------------------------------------------------------------- void seekfree_sendimg_7725(UARTN_enum uartn, uint8 *image, uint16 width, uint16 height) { uart_putchar(uartn, 0x00);uart_putchar(uartn, 0xff);uart_putchar(uartn, 0x01);uart_putchar(uartn, 0x01);//发送四个字节命令 uart_putbuff(uartn, image, width*height/8); //再发送图像 }