STM32 V5 source code
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guowenxue
2018-02-04 785deec23b4cb1e7c4c4d81eb808f195adb1d98a 
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/**************************************************************************** 


*   Copyright: (C)2014 Î人ÁèÔÆǶÈëʽʵÑéÊÒ www.emblinux.com 


*      Author: GuoWenxue<guowenxue@gmail.com> QQ: 281143292 


* Description: ·Ü¶·STM32v5¿ª·¢°åGPIOÄ£ÄâÉãÏñÍ·SCCB(Serial Camera Control Bus)µÄʵÏÖ, 


*              SCCBµÄ¹¤×÷·½Ê½ÓëI2CÊ®·ÖÀàËÆ£¬ËûʹÓÃOV¹«Ë¾¶¨ÒåµÄ3Ïß´®ÐÐÉãÏñÍ·¿ØÖÆ×ÜÏߣ¬ 


*              ¿ÉÒÔ¿ØÖƴ󲿷ÖOVϵÁÐͼÐδ«¸ÐÆ÷¡£SCCBÒ²¿ÉÒÔ¹¤×÷ÔÚ2Ïß´®ÐÐģʽ(SIOCÓëSIOD). 


*              STM32ÉÏʹÓÃPE2ºÍPE3·Ö±ðÁ¬½ÓOV7670µÄSCCBʱÖÓ¿ÚºÍÊý¾Ý¿Ú,¸Ã´úÂëÖ÷ҪʹÓà 


*              PE2ºÍPE3µÄGPIO¿ÚÄ£ÄâSCCB(Ò²¼´I2C)×ÜÏßЭÒé 


* 


*   ChangeLog: 


*        °æ±¾ºÅ     ÈÕÆÚ       ×÷Õß      ËµÃ÷ 


*        V1.0.0  2014.08.25  GuoWenxue   ·¢²¼¸Ã°æ±¾ 


****************************************************************************/ 


 


/* CF7670C-V3ÉãÏñÍ·Ä£¿éPin¹Ü½ÅºÍSTM32v5 Á¬½Ó±í: 


*| ²Î¿¼<CF7670C-V3 ¼òҪ˵Ã÷.pdf>ºÍ<·Ü¶·STM32¿ª·¢°åV5Ô­Àíͼ.pdf> 


*+---------------------------------------+------------------------------+ 


*|   CF7670C-V3ÉãÏñÍ·Ä£¿éÒý½Å¼°ËµÃ÷      |     STM32¶ËÒý½ÅÁ¬½Ó¼°ËµÃ÷    | 


*+---------------------------------------+------------------------------+ 


*| Pin1-VCC(3.3V,·½º¸Å̱ê¼ÇµÄΪµÚÒ»½Å)   |        3.3V                  | 


*| Pin2-GND                              |        GND                   | 


*| Pin3-SCL(SCCB_SCL²»´øÉÏÀ­µç×è)        |        PE2                   | 


*| Pin4-SDA(SCCB_SDA ´ø4.7KÉÏÀ­µç×è)     |        PE3                   | 


*| Pin5-VSYNC(OV7670  Ö¡Í¬²½ÐźÅ)        |        PE4                   | 


*| Pin6-HREF(OV7670  ÐÐͬ²½ÐźÅ)         |        NC                    | 


*| Pin7-WEN(FIFO(AL422)дÔÊÐí,¸ßµçƽÓÐЧ |        PE5                   | 


*| Pin8-XCLK(NC/RE# ¿Õ½Å)                |        NC                    | 


*| Pin9-RRST(FIFO¶ÁµØÖ·¸´Î»              |        PE6                   | 


*| Pin10-OE#(FIFOÊý¾ÝÊä³öʹÄÜ,µÍµçƽÓÐЧ |        GND                   | 


*| Pin11-RCK#(FIFO¶ÁÊý¾ÝʱÖÓ             |        PD12                  | 


*| Pin12-GND                             |        GND                   | 


*|                                       |                              | 


*| Pin13-D0     FIFOÊý¾Ý¿ÚÊä³öBIT0       |        PC0                   | 


*| Pin14-D1     FIFOÊý¾Ý¿ÚÊä³öBIT1       |        PC1                   | 


*| Pin15-D2     FIFOÊý¾Ý¿ÚÊä³öBIT2       |        PC2                   | 


*| Pin16-D3     FIFOÊý¾Ý¿ÚÊä³öBIT3       |        PC3                   | 


*| Pin17-D4     FIFOÊý¾Ý¿ÚÊä³öBIT4       |        PC4                   | 


*| Pin18-D5     FIFOÊý¾Ý¿ÚÊä³öBIT5       |        PC5                   | 


*| Pin19-D6     FIFOÊý¾Ý¿ÚÊä³öBIT6       |        PC6                   | 


*| Pin20-D7     FIFOÊý¾Ý¿ÚÊä³öBIT7       |        PC7                   | 


*+------------------+-----------------+---------------------------------+ 


*/ 


#ifndef __STM32V5_SCCB_H 


#define __STM32V5_SCCB_H 


#include "stm32f10x.h" 


 


/* I2C SCL/SDA Pin operation macro */ 


#define SCL_H         GPIOE->BSRR = GPIO_Pin_2      


#define SCL_L         GPIOE->BRR  = GPIO_Pin_2  


    


#define SDA_H         GPIOE->BSRR = GPIO_Pin_3      


#define SDA_L         GPIOE->BRR  = GPIO_Pin_3      


 


#define SCL_read      GPIOE->IDR  & GPIO_Pin_2      


#define SDA_read      GPIOE->IDR  & GPIO_Pin_3     


 


void init_sccb_gpio(void); 


int I2C_WriteByte(uint16_t WriteAddress , uint8_t SendByte , uint8_t DeviceAddress); 


int I2C_ReadByte (uint8_t* pBuffer, uint16_t length, uint8_t ReadAddress, uint8_t DeviceAddress); 


 


#endif