INA226模块单片机驱动代码

#include "ina226.h" INA226_DATA ina226_data0,ina226_data1; void delay_nms(uint16_t ms) //毫秒 { //根据不同芯片替换 } void delay_nus(uint16_t us)//微秒 { //根据不同芯片替换 } void INA226_GPIO_Init(void){ /* HS_HAL_GPIO_INIT_PARAM_S initParam; initParam.pin = PIN_SCL; initParam.mode = HS_HAL_GPIO_DUALDIRECT; initParam.intType = HS_HAL_GPIO_INT_NONE; initParam.pull = HS_HAL_GPIO_NOPULL; initParam.func = GPIO; HS_HAL_GPIO_Init(&initParam); initParam.pin = PIN_SDA; HS_HAL_GPIO_Init(&initParam); 根据不同芯片替换 */ IIC_SDA_H; IIC_SCL_H; delay_nms(5); } void INA226_IIC_Start(void){ IIC_SDA_H; IIC_SCL_H; delay_nus(2); IIC_SDA_L; delay_nus(2); IIC_SCL_L; } void INA226_IIC_Stop(void){ IIC_SCL_L; IIC_SDA_L; delay_nus(2); IIC_SCL_H; delay_nus(2); IIC_SDA_H; } u8 INA226_Wait_Ack(void){ u8 ucErrTime=0; IIC_SDA_H;delay_nus(2); IIC_SCL_H;delay_nus(2); while(READ_SDA){ ucErrTime++; if(ucErrTime > 250){ INA226_IIC_Stop(); return 1; } } IIC_SCL_L; return 0; } void INA226_Ack(void){ IIC_SCL_L; IIC_SDA_L; delay_nus(2); IIC_SCL_H; delay_nus(2); IIC_SCL_L; } void INA226_NAck(void){ IIC_SCL_L; IIC_SDA_H; delay_nus(2); IIC_SCL_H; delay_nus(2); IIC_SCL_L; } void INA226_Send_Byte(u8 tdata){ u8 t; IIC_SCL_L; for(t = 0;t < 8;t++){ if((tdata&0x80)>>7) IIC_SDA_H; else IIC_SDA_L; tdata <<= 1; delay_nus(2); IIC_SCL_H; delay_nus(2); IIC_SCL_L; delay_nus(2); } } u8 INA226_Read_Byte(u8 ack){ u8 i,res = 0; IIC_SDA_H; for(i = 0;i < 8;i++){ IIC_SCL_L; delay_nus(2); IIC_SCL_H; res <<= 1; if(READ_SDA)res++; delay_nus(2); } if(!ack) INA226_NAck(); else INA226_Ack(); return res; } u16 INA226_ReadData(u8 reg_addr,u8 w_addr,u8 r_addr) { u16 reg_data=0; u16 temp=0; INA226_IIC_Start(); INA226_Send_Byte(w_addr); if(INA226_Wait_Ack())return 0; INA226_Send_Byte(reg_addr); if(INA226_Wait_Ack())return 0; INA226_IIC_Start(); INA226_Send_Byte(r_addr); if(INA226_Wait_Ack())return 0; reg_data= INA226_Read_Byte(1); reg_data=(reg_data<<8)&0xFF00; temp=INA226_Read_Byte(0); INA226_IIC_Stop(); reg_data|=temp; return reg_data; } u8 INA226_WriteData(u8 reg_addr,u16 reg_data,u8 w_addr) { u8 data_high=(u8)((reg_data&0xFF00)>>8); u8 data_low=(u8)reg_data&0x00FF; INA226_IIC_Start(); INA226_Send_Byte(w_addr); if(INA226_Wait_Ack())return 0; INA226_Send_Byte(reg_addr ); if(INA226_Wait_Ack())return 0; INA226_Send_Byte(data_high); if(INA226_Wait_Ack())return 0; INA226_Send_Byte(data_low); if(INA226_Wait_Ack())return 0; INA226_IIC_Stop(); delay_nms(2); return 1; } void INA226_Init(AVG_NUM_E avg_num,VBUS_CHANGE_TIME_E vbus_cnum,VSH_CHANGE_TIME_E vsh_cnum,OPERATION_MODE_E mode,u8 w_addr){ u16 config_reg_data = 0x4000; config_reg_data |= (avg_num << 9); config_reg_data |= (vbus_cnum << 6); config_reg_data |= (vsh_cnum << 3); config_reg_data |= mode; printf("config = %x calib = %x\r\n",config_reg_data,CAL); INA226_WriteData(CONFIG_REG, config_reg_data,w_addr); INA226_WriteData(CALIB_REG, CAL,w_addr); } //mV void Get_Bus_Vol(void){ ina226_data0.bus_v = (float)INA226_ReadData(BUS_V_REG,CHIP1_WRITE_ADDR,CHIP1_READ_ADDR) * 1.25; ina226_data1.bus_v = (float)INA226_ReadData(BUS_V_REG,CHIP2_WRITE_ADDR,CHIP2_READ_ADDR) * 1.25; } //mV void Get_Shunt_Vol(void){ ina226_data0.shunt_v = (float)INA226_ReadData(SHUNT_V_REG,CHIP1_WRITE_ADDR,CHIP1_READ_ADDR) * 2.5 * 0.001; ina226_data1.shunt_v = (float)INA226_ReadData(SHUNT_V_REG,CHIP2_WRITE_ADDR,CHIP2_READ_ADDR) * 2.5 * 0.001 * 0.98; if(ina226_data0.shunt_v > 81.92) ina226_data0.shunt_v = 0; if(ina226_data1.shunt_v > 81.92) ina226_data1.shunt_v = 0; } //mA void Get_Current(void){ ina226_data0.cur = (float)INA226_ReadData(CURRENT_REG,CHIP1_WRITE_ADDR,CHIP1_READ_ADDR) * CURRENT_LSB / 1000; ina226_data1.cur = (float)INA226_ReadData(CURRENT_REG,CHIP2_WRITE_ADDR,CHIP2_READ_ADDR) * CURRENT_LSB / 1000 * 0.98 ; //0.98是校准 if(ina226_data1.cur > 16384) ina226_data1.cur = 0; if(ina226_data0.cur > 16384) ina226_data0.cur = 0; } //mW void Get_Power(void){ ina226_data0.power = (float)INA226_ReadData(POWER_REG,CHIP1_WRITE_ADDR,CHIP1_READ_ADDR)* CURRENT_LSB / 1000 * 25; ina226_data1.power = (float)INA226_ReadData(POWER_REG,CHIP2_WRITE_ADDR,CHIP2_READ_ADDR)* CURRENT_LSB / 1000 * 25 * 0.98 ; } void testINA226(void){ Get_Bus_Vol(); Get_Shunt_Vol(); Get_Current(); Get_Power(); printf("bus_in_vol = %.3fV bus_out_vol = %.3fV\r\n",ina226_data0.bus_v/1000,ina226_data1.bus_v/1000); printf("shunt_in_vol = %.2fmV shunt_out_vol = %.2fmV \r\n",ina226_data0.shunt_v,ina226_data1.shunt_v); printf("cur_in = %.3fA cur_out = %.3fA \r\n",ina226_data0.cur/1000,ina226_data1.cur/1000); printf("power_in = %.3fW power_out = %.3fW \r\n",ina226_data0.power/1000,ina226_data1.power/1000); printf("eff = %f\%\r\n",ina226_data1.power/ina226_data0.power); }