STM32 操作IIC 控制INA226

#include "INA226.h" #include "stm32f10x.h" #include "iic2.h" #include "delay.h" #include "math.h" #include "usart1.h" #include "control.h" float currentLSB, powerLSB; float vShuntMax, vBusMax, rShunt; //config默认0x4127 void Init_INA226(void) { INA226_configure(INA226_ADDRESS1, INA226_AVERAGES_1, INA226_BUS_CONV_TIME_1100US, INA226_SHUNT_CONV_TIME_1100US, INA226_MODE_SHUNT_BUS_CONT); INA226_calibrate(INA226_ADDRESS1, INA226_Rshunt,10); //校准电流 INA226_setMaskEnable_h(INA226_ADDRESS1); //上限 INA226_setBusVoltageLimit(INA226_ADDRESS1,Save_OverV_H_P1_VBUS); INA226_configure(INA226_ADDRESS2, INA226_AVERAGES_1, INA226_BUS_CONV_TIME_1100US, INA226_SHUNT_CONV_TIME_1100US, INA226_MODE_SHUNT_BUS_CONT); INA226_calibrate(INA226_ADDRESS2, INA226_Rshunt,10); INA226_setMaskEnable_h(INA226_ADDRESS2); INA226_setBusVoltageLimit(INA226_ADDRESS2,Save_OverV_H_P1_VBAT); } //============================================================================================================ void INA226_VBUSLowLimit(void) { INA226_configure(INA226_ADDRESS1, INA226_AVERAGES_1, INA226_BUS_CONV_TIME_1100US, INA226_SHUNT_CONV_TIME_1100US, INA226_MODE_SHUNT_BUS_CONT); INA226_calibrate(INA226_ADDRESS1, INA226_Rshunt,10); INA226_setMaskEnable_l(INA226_ADDRESS1); //下限 INA226_setBusVoltageLimit(INA226_ADDRESS1,Save_OverV_L_P1_VBUS); } void INA226_VBUSHighLimit(void) { INA226_configure(INA226_ADDRESS1, INA226_AVERAGES_1, INA226_BUS_CONV_TIME_1100US, INA226_SHUNT_CONV_TIME_1100US, INA226_MODE_SHUNT_BUS_CONT); INA226_calibrate(INA226_ADDRESS1, INA226_Rshunt,10); INA226_setMaskEnable_h(INA226_ADDRESS1); //上限 INA226_setBusVoltageLimit(INA226_ADDRESS1,Save_OverV_H_P1_VBUS); } void INA226_VBATLowLimit(void) { INA226_configure(INA226_ADDRESS2, INA226_AVERAGES_1, INA226_BUS_CONV_TIME_1100US, INA226_SHUNT_CONV_TIME_1100US, INA226_MODE_SHUNT_BUS_CONT); INA226_calibrate(INA226_ADDRESS2, INA226_Rshunt,10); INA226_setMaskEnable_l(INA226_ADDRESS2); //下限 INA226_setBusVoltageLimit(INA226_ADDRESS2,Save_OverV_L_P1_VBAT); } void INA226_VBATHighLimit(void) { INA226_configure(INA226_ADDRESS2, INA226_AVERAGES_1, INA226_BUS_CONV_TIME_1100US, INA226_SHUNT_CONV_TIME_1100US, INA226_MODE_SHUNT_BUS_CONT); INA226_calibrate(INA226_ADDRESS2, INA226_Rshunt,10); INA226_setMaskEnable_h(INA226_ADDRESS2); //上限 INA226_setBusVoltageLimit(INA226_ADDRESS2,Save_OverV_H_P1_VBAT); } //============================================================================================================ uint8_t INA226_configure(u8 addr, ina226_averages_t avg, ina226_busConvTime_t busConvTime, ina226_shuntConvTime_t shuntConvTime, ina226_mode_t mode) { uint16_t config = 0x8000; //先复位 config |= (avg << 9 | busConvTime << 6 | shuntConvTime << 3 | mode); // vBusMax = 36; // vShuntMax = 0.08192f; INA226_WriteTwoByte(addr,INA226_REG_CONFIG, config); return 0; } //============================================ uint8_t INA226_setMaskEnable_h(u8 addr) { uint16_t mask = 0; mask |= (INA226_BIT_BUL | INA226_BIT_APOL ); //配置 Alert 测 under Vbus; //Alert pin polarity,active-high open collector //警报标志位自动清除 INA226_WriteTwoByte(addr, INA226_REG_MASKENABLE, mask); return 0; } uint8_t INA226_setMaskEnable_l(u8 addr) { uint16_t mask = 0; mask |= (INA226_BIT_BOL | INA226_BIT_APOL ); //配置 Alert 测 over Vbus; //Alert pin polarity,active-high open collector //警报标志位自动清除 INA226_WriteTwoByte(addr, INA226_REG_MASKENABLE, mask); return 0; } uint8_t INA226_calibrate(u8 addr, float rShuntValue, float iMaxExpected) { uint16_t calibrationValue; float minimumLSB; // float iMaxPossible; // iMaxPossible = vShuntMax / rShunt; rShunt = rShuntValue; minimumLSB = iMaxExpected / 32767; //Current_LSB = Maximum Expected Current / 2^15 currentLSB = (uint16_t)(minimumLSB * 100000000); currentLSB /= 100000000; currentLSB /= 0.0001; currentLSB = ceil(currentLSB); currentLSB *= 0.0001; powerLSB = currentLSB * 25; calibrationValue = (uint16_t)((0.00512) / (currentLSB * rShunt));//CAL = 0.00512/(currentLSB * Rshunt) if(debug ==1) USART1_Printf("calibrationValue %d\r\n",calibrationValue); INA226_WriteTwoByte(addr, INA226_REG_CALIBRATION, calibrationValue); return 0; } //================读数据=================================================================================================================================== float INA226_readBusPower(u8 addr) { return (INA226_ReadTwoByte(addr, INA226_REG_POWER) * powerLSB); } //mA级别 float INA226_readShuntCurrent(u8 addr) { u16 value=0; float Current =0; //=========================校准电流============================================================================ // float x1=286; // float y1=289; // // float x2=5050; // float y2=5100; // float k= (y2-y1)/(x2-x1);//1.0099 // float b= y1-k*x1;//0.1784 // USART1_Printf("k= %.4f\r\nb= %.4f ",k,b); // USART1_Printf("INA226_REG_SHUNTVOLTAGE %.4d\r\n",INA226_ReadTwoByte(addr, INA226_REG_SHUNTVOLTAGE)); //===================================================================================================== value = INA226_ReadTwoByte(addr, INA226_REG_CURRENT); if( (value > 65500) || (value <= 2) || (value <= -0.001)) value =0; Current = value * currentLSB; Current *=1000; Current = Current / 1.0009 - 0.1784; if( (Current > 65500) || (Current <= 2) || (Current <= -0.001)) Current =0; return (Current); } //mV级别 float INA226_readShuntVoltage(u8 addr) { float voltage =0; voltage = INA226_ReadTwoByte(addr, INA226_REG_SHUNTVOLTAGE) * 0.0000025; //2.5uV/bit voltage *= 1000; voltage = voltage / 1.2776 + 0.1609; if(voltage <=0.17) voltage =0; if(voltage > 80) voltage =0; //范围为+-80mv //=========================校准电压============================================================================ // float x1=1.3; // float y1=1.5; // float x2=33; // float y2=42; // float k= (y2-y1)/(x2-x1);//1.2776 // float b= y1-k*x1;//-0.1609 // USART1_Printf("k= %.4f\r\nb= %.4f ",k,b); // USART1_Printf("INA226_REG_SHUNTVOLTAGE %.4d\r\n",INA226_ReadTwoByte(addr, INA226_REG_SHUNTVOLTAGE)); //===================================================================================================== return (voltage); } float INA226_readBusVoltage(u8 addr) { float voltage; voltage = INA226_ReadTwoByte(addr, INA226_REG_BUSVOLTAGE); voltage *= 1.25; //MV // voltage *= 0.00125; //V if(voltage <=10) voltage =0; //正误差 if(voltage > 80000) voltage =0; //负误差 // if (voltage <20) //误触发报警 // voltage = 205; // if (voltage == 0) // voltage = 205; return (voltage); } //===================================================================================================================================================== //================读配置寄存器配置================================================== uint16_t INA226_getConfigure(u8 addr) { USART1_Printf("INA226_REG_Configure %d\r\n",INA226_ReadTwoByte(addr, INA226_REG_CONFIG)); return INA226_ReadTwoByte(addr, INA226_REG_CONFIG); } uint16_t INA226_getMaskEnable(u8 addr) { if(debug ==1) USART1_Printf("INA226_REG_MASKENABLE %d\r\n",INA226_ReadTwoByte(addr, INA226_REG_MASKENABLE)); return INA226_ReadTwoByte(addr, INA226_REG_MASKENABLE); } uint16_t INA226_getAlertLimit(u8 addr) { USART1_Printf("INA226_REG_ALERTLIMIT %d\r\n",INA226_ReadTwoByte(addr, INA226_REG_ALERTLIMIT));