liweiyan/shoe_mcu2.1.1/bsp/bsp_ms5611.c

#include "main.h"

//#define MSE5611_Slave 0xEC   	//½Ó¸ß
//#define MSE5611_Slave 0xEE	//½ÓµÍ

#define MSE5611_Reset 0x1E
#define Convert_D1_256 0x40
#define Convert_D1_512 0x42
#define Convert_D1_1024 0x44
#define Convert_D1_2048 0x46
#define Convert_D1_4096 0x48
#define Convert_D2_256 0x50
#define Convert_D2_512 0x52
#define Convert_D2_1024 0x54
#define Convert_D2_2048 0x56
#define Convert_D2_4096 0x58
#define ADC_Read 0x00

#define PROM_Read_0 0xA0
#define PROM_Read_1 0xA2
#define PROM_Read_2 0xA4
#define PROM_Read_3 0xA6
#define PROM_Read_4 0xA8
#define PROM_Read_5 0xAA
#define PROM_Read_6 0xAC
#define PROM_Read_7 0xAE

#define Sea_Level_Pressure 101325.0
uint16_t Reserve = 0;
uint16_t CFG[6] = {0};
uint16_t MSE5611_CRC = 0;
uint32_t D[2] = {0};

//int32_t Temp = 0;
//int32_t Press = 0;
//float Height = 0;

int MSE5611_register_write_len(uint8_t addr,uint8_t register_address, uint8_t len,uint8_t *buf)
{
	uint8_t w2_data[50],i;
	w2_data[0] = register_address;
	for(i=0;i<len;i++){
		w2_data[i+1] = *(buf+i);
	}
	if(twi_master_transfer(addr, w2_data, len+1, TWI_ISSUE_STOP) == true) return 0;
	else return -1;
}

int MSE5611_register_read_len(uint8_t addr,uint8_t register_address, uint8_t number_of_bytes,uint8_t * destination )
{
    bool transfer_succeeded;
    transfer_succeeded  = twi_master_transfer(addr, &register_address, 1, TWI_DONT_ISSUE_STOP);
    transfer_succeeded &= twi_master_transfer(addr|TWI_READ_BIT, destination, number_of_bytes, TWI_ISSUE_STOP);
    
	  if(transfer_succeeded == true)return 0;
	  else return -1;
}

void ReadPressure_Pre(void)
{
	uint8_t dat = 0;
	//I2C_WriteByte(I2C1,MSE5611_Slave,Convert_D1_4096);
	MSE5611_register_write_len(MSE5611_Slave, Convert_D1_256, 0, &dat);
}
uint32_t ReadPressure(void)
{
	uint8_t dd[3] = {0,0,0};
	uint8_t R = 0;
	
	MSE5611_register_read_len(MSE5611_Slave,R,3,dd);
	D[0] = ((uint32_t)(dd[0]<<16)|(dd[1]<<8)|(dd[2]<<0));
	return D[0];
}

int MS5611_Init(void)
{
	uint8_t i;
	uint8_t dd[2];
	MSE5611_register_read_len(MSE5611_Slave,PROM_Read_0,2,dd);
	Reserve = ((uint16_t)dd[0]<<8|dd[1]);
	DEBUG_LOG("MSE5611_Config:");
	for(i=0;i<6;i++){
		MSE5611_register_read_len(MSE5611_Slave,PROM_Read_1+i*2,2,dd);
		CFG[i] = ((uint16_t)dd[0]<<8 | dd[1]);
		DEBUG_LOG("%02X ",CFG[i]);
	}
	DEBUG_LOG("\n");
	MSE5611_register_read_len(MSE5611_Slave,PROM_Read_7,2,dd);
	MSE5611_CRC = ((uint16_t)dd[0]<<8|dd[1]);
}