BMP180 与STM32F429 硬件I2C通信卡在EV6

天命难违 · 发表于 2017-7-10 21:30:19

如题[mw_shl_code=c,true]#include "I2C.h"

static void I2C_GPIO_Config(void){
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);

GPIO_InitTypeDef GPIO_InitStruct;

GPIO_PinAFConfig(I2C_PORT,I2C_SCL_SOURCE,GPIO_AF_I2C1);
GPIO_PinAFConfig(I2C_PORT,I2C_SDA_SOURCE,GPIO_AF_I2C1);

GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_OType = GPIO_OType_OD;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_InitStruct.GPIO_Pin = I2C_SCL | I2C_SDA;

GPIO_Init(I2C_PORT,&GPIO_InitStruct);
}

static void I2C_Mode_Config(void){
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE);

I2C_InitTypeDef I2C_IbitStruct;

I2C_DeInit(I2C_BASIC);
I2C_IbitStruct.I2C_ClockSpeed = I2C_SPEED;
I2C_IbitStruct.I2C_Mode = I2C_Mode_I2C;
I2C_IbitStruct.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_IbitStruct.I2C_OwnAddress1 = OWN_ADRESS;
I2C_IbitStruct.I2C_Ack = I2C_Ack_Enable;
I2C_IbitStruct.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;

I2C_Init(I2C_BASIC,&I2C_IbitStruct);

I2C_Cmd(I2C1,ENABLE);

I2C_AcknowledgeConfig(I2C_BASIC, ENABLE);
}

void I2C_Config(void){
I2C_GPIO_Config();
I2C_Mode_Config();
}
[/mw_shl_code][mw_shl_code=c,true]#ifndef _I2C_H_
#define _I2C_H_

#include "stm32f4xx.h"

#define I2C_PORT GPIOB
#define I2C_BASIC I2C1

#define I2C_SCL GPIO_Pin_6
#define I2C_SCL_SOURCE GPIO_PinSource6

#define I2C_SDA GPIO_Pin_7
#define I2C_SDA_SOURCE GPIO_PinSource7

#define I2C_SPEED 10000
#define OWN_ADRESS 0xEE

void I2C_Config(void);

#endif /*_I2C_H_*/
[/mw_shl_code][mw_shl_code=c,true]#include "BMP180.h"

static short BMP180_Read_Data(unsigned char ADDR){
unsigned char msb,lsb;
short Data;

while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));

I2C_AcknowledgeConfig(BMP180_I2C, ENABLE);

I2C_GenerateSTART(BMP180_I2C,ENABLE);

while(!I2C_CheckEvent(BMP180_I2C,I2C_EVENT_MASTER_MODE_SELECT)){

}

I2C_Send7bitAddress(BMP180_I2C,BMP180_Write_ADDR,I2C_Direction_Transmitter);

while(!I2C_CheckEvent(BMP180_I2C,I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)){

}

I2C_SendData(BMP180_I2C,ADDR);

while(!I2C_CheckEvent(BMP180_I2C,I2C_EVENT_MASTER_BYTE_TRANSMITTED)){

}

I2C_GenerateSTART(BMP180_I2C,ENABLE);

while(!I2C_CheckEvent(BMP180_I2C,I2C_EVENT_MASTER_MODE_SELECT)){

}

I2C_Send7bitAddress(BMP180_I2C,BMP180_Read_ADDR,I2C_Direction_Transmitter);

while(!I2C_CheckEvent(BMP180_I2C,I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)){

}

msb = I2C_ReceiveData(BMP180_I2C);

while(!I2C_CheckEvent(BMP180_I2C,I2C_EVENT_MASTER_BYTE_RECEIVED)){

}

I2C_NACKPositionConfig(BMP180_I2C,I2C_NACKPosition_Next);

lsb = I2C_ReceiveData(BMP180_I2C);

while(!I2C_CheckEvent(BMP180_I2C,I2C_EVENT_MASTER_BYTE_RECEIVED)){

}

I2C_NACKPositionConfig(BMP180_I2C,I2C_NACKPosition_Current);

Data = (msb << 8);
Data |= lsb;
return Data;
}
[/mw_shl_code][mw_shl_code=c,true]
/*íaéèoê*/
#define BMP180_I2C I2C1

/*BMP80μØÖ·*/
#define BMP180_Write_ADDR 0xEE
#define BMP180_Read_ADDR 0xEF
[/mw_shl_code]