使用AT24c512的怎么模拟I2C
AT24c512要使用I2C，但是我没有用stm32默认的I2C接口的引脚，而是使用了其他的引脚，现在就是不知道还能不能使用他的固件库中的函数了，哪位大侠知道，请赐教RE:使用AT24c512的怎么模拟I2C
可以模拟I2C，这是24C02的例子，供参考*******************************************************************************
* File Name : I2C_24c02_simulink.c
* Author : Rasar Yao
* Date First Issued : 04/26/2010
* Deion : I2C_24c02_simulink_TEST
********************************************************************************/
#include "stm32f10x_lib.h"
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
u8 Tx1_Buffer[] = "123456789abcdef";
/* Private variables ---------------------------------------------------------*/
static volatile ErrorStatus HSEStartUpStatus = SUCCESS;
void RCC_Configuration(void);
void I2C_GPIO_Config(void);
extern bool I2C_WriteByte(u8 SendByte, u16 WriteAddress, u8 DeviceAddress);
extern bool I2C_ReadByte(u8* pBuffer, u8 length, u16 ReadAddress,u8 DeviceAddress);
int main(void)
{
RCC_Configuration();
I2C_GPIO_Config();
I2C_WriteByte(0x55, 0x30,0xA0) ;
I2C_ReadByte(Tx1_Buffer, 0x02, 0x30,0xA0);
while(1)
{
}
}
/*******************************************************************************
* Name: RCC_Configuration
* Deion : Configures the different system clocks.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void RCC_Configuration(void)
{
/* SYSCLK, HCLK, PCLK2 and PCLK1 configuration -----------------------------*/
/* RCC system reset(for debug purpose) */
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
/* Enable GPIOA, GPIOB, GPIOC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOF , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOG | RCC_APB2Periph_AFIO, ENABLE);
}
void I2C_GPIO_Config(void)
{
GPIO_InitTypeDefGPIO_InitStructure;
/* Configure I2C1 pins: SCL and SDA */
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
回复:使用AT24c512的怎么模拟I2C
怎么缺失两个函数主体吧I2C_WriteByte(0x55, 0x30, 0xA0) ;
I2C_ReadByte(Tx1_Buffer, 0x02, 0x30, 0xA0);
是自己写的吧
RE:使用AT24c512的怎么模拟I2C
函数体是与其它单片机相同的
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