基于STM32的I2C EEPROM驱动程序（含全部代码哦！）

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得蜜发布时间：2008-11-27 16:43

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我发现写博客还是很有好处的,前天我的LCD没显示了我以为是程序的哪里被我改错了,我就这改改那改改，也没弄好，倒是把程序弄得心里没底了，没办法把博客里的程序下回去，烧到片子里，发现还是没有反应，才确定是硬件问题，因为我传到博客里的程序都是调好的。       这两天调EEPROM驱动才发现ST给的例子在万利的开发板上根本调不通，于是到网上找了一圈，软I2C的硬I2C的就是没有一个能拿过来就用的。经过我东拼西凑终于凑出了一个能调通的程序，已经在AT24C02、AT24C04上验证通过。 `?c)[ B?z
/* Includes ------------------------------------------------------------------*/ - )i=cZG z
#include "at24c04.h" RA{7A![`D#
/* Private define ------------------------------------------------------------*/ [y[+
#define CR1_STOP_Set          ((u16)0x0200) Q|zXN;
#define CR1_STOP_Reset       ((u16)0xFDFF) {'bmfFg
/* I2C ACK mask */ R!|6Z.32
#define CR1_ACK_Set          ((u16)0x0400) OrcNFk
#define CR1_ACK_Reset          ((u16)0xFBFF) U)c7=)l
/* Private macro -------------------------------------------------------------*/ VGaKo_ b332
/* Private variables ---------------------------------------------------------*/ c,"4RP2
u16 EEPROM_ADDRESS ; X_xQ!~_
/* Private function prototypes -----------------------------------------------*/ %"`GGM%Qh
void GPIO_Configuration(void); NxL}D# %e{
void I2C_Configuration(void); [?L`IBoyMx
void I2C_AcknowledgePolling(void); (.tgGp~*
/* Private functions ---------------------------------------------------------*/ Ks[B\Xe:
/******************************************************************************* |My? ~
* Function Name  : GPIO_Configuration V-vuyC
* Description : Configure the used I/O ports pin ^.c=sA7>=(
* Input       : None L3A]/}Z '
* Output       : None ONl*_JTc
* Return       : None pV| }>@/
*******************************************************************************/ ^SKUyjww
void GPIO_Configuration(void) T.NUAO_t
{ s-u2z32K
  GPIO_InitTypeDef  GPIO_InitStructure; pl$njxH$=
  /* Configure I2C1 pins: SCL and SDA */ \:h% WlAjp
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_6 | GPIO_Pin_7; 9eS?{PnDU
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 7WT)C%BU
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; 8~? 7Y=,
  GPIO_Init(GPIOB, &GPIO_InitStructure); 32y>.b2#`@r
} oQ&/a_{X
/******************************************************************************* 7{7,kQS>
* Function Name  : I2C_Configuration A zx' o:
* Description : I2C Configuration g6{s~ZZw
* Input       : None {Z)!EvYl0
* Output       : None _FuWq88O
* Return       : None ;jIJ'{2C
*******************************************************************************/<span style="display: none"> }w6dSCR1 |= CR1_START_Set; HV+Z}IN,T
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT));  <span style="display: none">WDR = EEPROM_ADDRESS; ~_ka!7e@
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); f^>r" a%z:
I2C1->DR = ReadAddr; Hit(, 32
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED)); ^L1#4 ]zZ{
            E'p@-dJ
I2C1->CR1 |= CR1_START_Set;<span style="display: none"> MU[o,DR = EEPROM_ADDRESS+1; [#|A8r2L
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)); aJ 9iS
I2C1->CR1 |= CR1_ACK_Set; H%W$a\&
if(NumByteToRead>1){ oq& 'V}
      for(i=0;iDR; N8kjh 2Ep
         %_y9@+vsP
         I2C1->CR1 |= CR1_ACK_Set; ligf8
      } Ek`80FdM
} O%.JB'B
while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_RECEIVED)); d}M,P32bl
*pBuffer = I2C1->DR; :t({d=
I2C1->CR1 &= CR1_ACK_Reset; tG4 eSV{:
<span style="display: none">\i32#0CR1 |= CR1_STOP_Set; O| nDg`
} WyRbb
8qd|0,p
void I2C_24CXX_Write(u8 EEPROM_ADDRESS,u8 WriteAddr,u8* pBuffer,u8 NumByteToWrite) .0 O~.
{ 5%5SCOw
u8 wLen,addr; 7RvJPXW
.NB;JbL`G
wLen="NumByteToWrite"; 1(Wk$ [F3m
addr="WriteAddr"; woSUckS$
ScrollPage:I2C_AcknowledgePolling(); os]DN9:y\$
I;Lec,14
            I2C1->CR1 |= CR1_START_Set; ;Y! '*\
            while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_MODE_SELECT));  |GCz>S? M
  pkmmjKaDw*
            I2C1->DR = EEPROM_ADDRESS; L+A)'6-6
            while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)); wR6fPW
            I2C1->DR = addr; EyHu!c/Mse
            while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED)); L~a\n%[,
                           Irqn51 U
            I2C1->DR = *pBuffer++; 32*Zq,9
            while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED)); K_?mnX
            R~|>nHP^
            addr++; =xGXfj:
            wLen--; 7cdZ8a
      ,kR`#[
while(wLen){ Q&9.6bo\Sd
      if((addr%8)!=0) -$32tY-HhG
   { v=w.% mU
         I2C1->DR = *pBuffer++; {xI `4U"R^
         while(!I2C_CheckEvent(I2C1,I2C_EVENT_MASTER_BYTE_TRANSMITTED)); X-3yaW"q
         )6|3$mw
         addr++; WP4=?ZkRI
         wLen--; 1oob}bZqq
      } STni9 ]2
      else{ `1DU@v
         I2C1->CR1 |= CR1_STOP_Set; L=@{0:0J
         goto ScrollPage; E#Ew\cB
      } IR"T:_)y
} :VZ)Qmn
I2C1->CR1 |= CR1_STOP_Set; \R-_Wg&p
} l+EZ@F_Jl