/****************************************************************************
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* Copyright: (C)2014 Î人ÁèÔÆǶÈëʽʵÑéÊÒ www.emblinux.com
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* Author: GuoWenxue<guowenxue@gmail.com> QQ: 281143292
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* Description: ·Ü¶·STM32v5¿ª·¢°åOV7670µÄ¼Ä´æÆ÷±í£¬Ö¡Í¬²½ÖжÏÅäÖã¬
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* ÒÔ¼°ÉãÏñÍ·OV7670+FIFO(AL422B)µÄÒý½Å³õʼ»¯£º
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*
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* ChangeLog:
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* °æ±¾ºÅ ÈÕÆÚ ×÷Õß ËµÃ÷
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* V1.0.0 2014.08.25 GuoWenxue ·¢²¼¸Ã°æ±¾
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****************************************************************************/
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/* CF7670C-V3ÉãÏñÍ·Ä£¿éPin¹Ü½ÅºÍSTM32v5 Á¬½Ó±í:
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*| ²Î¿¼<CF7670C-V3 ¼òҪ˵Ã÷.pdf>ºÍ<·Ü¶·STM32¿ª·¢°åV5ÔÀíͼ.pdf>
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*+---------------------------------------+------------------------------+
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*| CF7670C-V3ÉãÏñÍ·Ä£¿éÒý½Å¼°ËµÃ÷ | STM32¶ËÒý½ÅÁ¬½Ó¼°ËµÃ÷ |
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*+---------------------------------------+------------------------------+
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*| Pin1-VCC(3.3V,·½º¸Å̱ê¼ÇµÄΪµÚÒ»½Å) | 3.3V |
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*| Pin2-GND | GND |
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*| Pin3-SCL(SCCB_SCL²»´øÉÏÀµç×è) | PE2 |
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*| Pin4-SDA(SCCB_SDA ´ø4.7KÉÏÀµç×è) | PE3 |
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*| Pin5-VSYNC(OV7670 ֡ͬ²½ÐźÅ) | PE4 |
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*| Pin6-HREF(OV7670 ÐÐͬ²½ÐźÅ) | NC |
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*| Pin7-WEN(FIFO(AL422)дÔÊÐí,¸ßµçƽÓÐЧ | PE5 |
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*| Pin8-XCLK(NC/RE# ¿Õ½Å) | NC |
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*| Pin9-RRST(FIFO¶ÁµØÖ·¸´Î» | PE6 |
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*| Pin10-OE#(FIFOÊý¾ÝÊä³öʹÄÜ,µÍµçƽÓÐЧ | GND |
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*| Pin11-RCK#(FIFO¶ÁÊý¾ÝʱÖÓ | PD12 |
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*| Pin12-GND | GND |
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*| | |
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*| Pin13-D0 FIFOÊý¾Ý¿ÚÊä³öBIT0 | PC0 |
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*| Pin14-D1 FIFOÊý¾Ý¿ÚÊä³öBIT1 | PC1 |
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*| Pin15-D2 FIFOÊý¾Ý¿ÚÊä³öBIT2 | PC2 |
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*| Pin16-D3 FIFOÊý¾Ý¿ÚÊä³öBIT3 | PC3 |
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*| Pin17-D4 FIFOÊý¾Ý¿ÚÊä³öBIT4 | PC4 |
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*| Pin18-D5 FIFOÊý¾Ý¿ÚÊä³öBIT5 | PC5 |
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*| Pin19-D6 FIFOÊý¾Ý¿ÚÊä³öBIT6 | PC6 |
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*| Pin20-D7 FIFOÊý¾Ý¿ÚÊä³öBIT7 | PC7 |
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*+------------------+-----------------+---------------------------------+
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*/
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#ifndef __STM32V5_OV7670_H
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#define __STM32V5_OV7670_H
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#define LEVEL_HIGH 1
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#define LEVEL_LOW 0
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#define QVGA_XPIX 320
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#define QVGA_YPIX 240
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#define OV7670_OUT_XPIX QVGA_XPIX
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#define OV7670_OUT_YPIX QVGA_YPIX
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#define OV7670_OUT_MAX_PIXS (OV7670_OUT_XPIX*OV7670_OUT_YPIX)
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#define OV7670_ADDR 0x42 /* I2C¶ÁµØÖ· */
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#define OV7670_VERID 0x73
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#define OV7670_REG_NUM 114
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#define OV7670_REG_VERID 0x0B
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#define OV7670_REG_COM7 0x12
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#define PORT_VSYNC_CMOS GPIOE
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#define RCC_APB2Periph_PORT_VSYNC_CMOS RCC_APB2Periph_GPIOE
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#define PIN_VSYNC_CMOS GPIO_Pin_4
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#define EXTI_LINE_VSYNC_CMOS EXTI_Line4
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#define PORT_SOURCE_VSYNC_CMOS GPIO_PortSourceGPIOE
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#define PIN_SOURCE_VSYNC_CMOS GPIO_PinSource4
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//#define FIFO_CS_PIN GPIO_Pin_0 /* FIFOƬѡ */
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#define FIFO_RRST_PIN GPIO_Pin_6 /* FIFO¶ÁµØÖ·¸´Î», PE6*/
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#define FIFO_RCLK_PIN GPIO_Pin_12 /* FIFO¶ÁʱÖÓ, PD12 */
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#define FIFO_WE_PIN GPIO_Pin_5 /* FIFOдÔÊÐí, PE5 */
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/* FIFO Pin operation macro function */
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#define FIFO_RRST_H() GPIOE->BSRR =FIFO_RRST_PIN
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#define FIFO_RRST_L() GPIOE->BRR =FIFO_RRST_PIN
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#define FIFO_RCLK_H() GPIOD->BSRR =FIFO_RCLK_PIN
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#define FIFO_RCLK_L() GPIOD->BRR =FIFO_RCLK_PIN
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#define FIFO_WE_H() GPIOE->BSRR =FIFO_WE_PIN /*À¸ßʹFIFOдʹÄÜ*/
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#define FIFO_WE_L() GPIOE->BRR =FIFO_WE_PIN /*À¸ßʹFIFOд½ûÖ¹*/
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#define OV7670_FIFO_READ_PREPARE() \
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do{ \
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FIFO_RRST_L(); \
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FIFO_RCLK_L(); \
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FIFO_RCLK_H(); \
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FIFO_RRST_H(); \
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FIFO_RCLK_L(); \
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FIFO_RCLK_H(); \
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}while(0)
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enum
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{
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CAM_FIFO_PIN_RRST = 0,
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CAM_FIFO_PIN_RCLK,
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CAM_FIFO_PIN_WE,
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CAM_FIFO_PIN_MAX,
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};
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enum
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{
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FMT_QVGA_YUV422,
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FMT_QVGA_RGB565,
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FMT_QVGA_RGB444,
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FMT_QVGA_RAWRGB,
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};
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typedef struct cam_fifo_pin_s
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{
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int num; /* LED񅧏 */
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GPIO_TypeDef *group; /* LEDʹÓõÄGPIOÔÚÄÄÒ»×é: GPIOB or GPIOD */
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uint16_t pin; /* LEDʹÓõÄGPIO×éÖеÄÄÇÒ»¸öpin: GPIO_Pin_x */
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} cam_fifo_pin_t;
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/* g_OV7670_VSYNCÓÃÀ´±êʾһ֡µÄ¿ªÊ¼ºÍ½áÊø:
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* OV7670µÄÊý¾ÝÒÔVGAʱÐòÊä³ö,ÔÚ¸ÃʱÐòÖÐVSYNCµÄϽµÑرíʾһ֡µÄÊý¾Ý¿ªÊ¼,¶øÉÏÉýÑرíʾһ֡µÄÊý¾Ý½áÊø.
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* ËùÒÔÎÒÃǽ«VSYNC¹Ü½ÅPE4ÅäÖóÉEXTI4ÉÏÉýÑØ´¥·¢Ä£Ê½.ÔÚEXTI4µÄÖжϴ¦Àí³ÌÐòEXTI4_IRQHandler()ÖÐ,µÚÒ»´Î
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* ½øÈëÖжϵÄʱºò,˵Ã÷ÉÏÒ»Ö¡Êý¾ÝÒѾ½áÊø(ÕâÒ²Òâζ×ÅÕâÒ»Ö¡Êý¾ÝµÄ¿ªÊ¼),ÎÒÃÇ¿ªÊ¼Ê¹ÄÜÉãÏñÍ·Êý¾ÝдÈëFIFO
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* ²¢¸üÐÂg_OV7670_VSYNCµÄ״ֵ̬Ϊ1;µ±µÚ¶þ´Î½øÈëÖжϵÄʱºò,˵Ã÷ÕâÒ»Ö¡Êý¾ÝµÄ´«ÊäÒѾ½áÊø,ÎÒÃǾͽûÖ¹
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* ÉãÏñÍ·Êý¾ÝдÈëFIFO²¢¸üÐÂg_OV7670_VSYNCµÄ״ֵ̬Ϊ2;
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* ÔÚÓ¦ÓóÌÐòÖÐ,ÒªÅжÏg_OV7670_VSYNCµÄÖµÊÇ·ñΪ2,Èç¹ûΪ2Ôò¿ÉÒÔ´ÓFIFOÖжÁÈ¡Êý¾Ý,¶ÁÍêºó¸üÐÂÆä״ֵ̬Ϊ0.
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*/
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extern uint8_t g_OV7670_VSYNC;
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extern void set_ov7670_fifo_pin(int which, int level);
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extern void ov7670_fifo_read_prepare(void);
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extern int OV7670_Initialize(int output_fmt);
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#endif
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