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Sylvan Arnold
Sylvan Arnold
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pico-sensor/McuLib/src/McuINA260.c
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312
pico-sensor/McuLib/src/McuINA260.c
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/**
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* Copyright (c) 2023, Erich Styger
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* \brief Driver for the TI INA260 current/voltage sensor.
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*/
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#include "McuINA260.h"
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#include "McuUtility.h"
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#include "McuGenericI2C.h"
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#define SwapBytes(u16) ((u16<<8)|(u16>>8))
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/*!
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* \brief Convert the 16bit current register value to micro amps
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* \param value McuINA260_ADDR_CURRENT_REGISTER register value
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* \return Current in micro amp
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*/
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static int32_t McuINA260_ConvertCurrentRegisterToMicroAmps(int16_t value) {
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/* LSB == 1.25 mA == 1250 uA */
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return value*1250;
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}
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/*!
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* \brief Convert the voltage register value into miro volts
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* \param value McuINA260_ADDR_BUS_VOLTAGE_REGISTER register value
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* \return Voltage in micro volt
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*/
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static uint32_t McuINA260_ConvertBusVoltageRegisterToMicroVoltage(uint16_t value) {
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/* LSB == 1.25 mV == 1250 uV */
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return (uint32_t)value*1250;
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}
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/*!
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* \brief Convert the power register value into miro volts
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* \param value McuINA260_ADDR_POWER_REGISTER register value
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* \return Voltage in milli watt
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*/
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static uint32_t McuINA260_ConvertPowerRegisterToMilliWatt(uint16_t value) {
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/* LSB == 10 mW */
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return (uint32_t)value*10;
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}
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uint8_t McuINA260_ReadRegister(INA260_REG_e reg, uint16_t *value) {
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uint8_t res;
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uint16_t data;
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res = McuGenericI2C_ReadWordAddress8(McuINA260_CONFIG_I2C_ADDRESS, reg, &data);
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if (res!=ERR_OK) {
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return res;
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}
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*value = SwapBytes(data);
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return ERR_OK;
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}
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uint8_t McuINA260_WriteRegister(INA260_REG_e reg, uint16_t value) {
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uint8_t res;
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uint16_t data;
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data = SwapBytes(value);
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res = McuGenericI2C_WriteWordAddress8(McuINA260_CONFIG_I2C_ADDRESS, reg, data);
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if (res!=ERR_OK) {
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return res;
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}
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return ERR_OK;
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}
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uint8_t McuINA260_ReadConfigRegister(uint16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_CONFIGURATION_REGISTER, value);
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}
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uint8_t McuINA260_WriteConfigRegister(uint16_t value) {
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return McuINA260_WriteRegister(McuINA260_ADDR_CONFIGURATION_REGISTER, value);
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}
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uint8_t McuINA260_WriteResetBit(void) {
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return McuINA260_WriteConfigRegister(1<<15);
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}
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uint8_t McuINA260_ReadCurrentRegister(int16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_CURRENT_REGISTER, (uint16_t*)value);
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}
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uint8_t McuINA260_ReadBusVoltageRegister(uint16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_BUS_VOLTAGE_REGISTER, value);
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}
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uint8_t McuINA260_ReadPowerRegister(uint16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_POWER_REGISTER, value);
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}
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uint8_t McuINA260_ReadMaskEnableRegister(uint16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_MASK_ENABLE_REGISTER, value);
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}
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uint8_t McuINA260_ReadAlertLimitRegister(uint16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_ALERT_LIMIT_REGISTER, value);
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}
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uint8_t McuINA260_ReadManufacturereIDRegister(uint16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_MANUFACTURER_ID_REGISTER, value);
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}
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uint8_t McuINA260_ReadDieIDRegister(uint16_t *value) {
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return McuINA260_ReadRegister(McuINA260_ADDR_DIE_ID_REGISTER, value);
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}
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/*!
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* \brief Read the bus voltage measurement value from the device.
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* \return Power value, as mV (micro-Volt).
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*/
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uint32_t McuINA260_ReadVoltage(void) {
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uint8_t res;
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uint16_t val;
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res = McuINA260_ReadBusVoltageRegister(&val);
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if (res==ERR_OK) {
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return McuINA260_ConvertBusVoltageRegisterToMicroVoltage(val);
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} else {
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return 0; /* error case */
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}
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}
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/*!
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* \brief Read the power measurement value from the device.
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* \return Power value, as mW (milli-Watt).
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*/
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uint32_t McuINA260_ReadPower(void) {
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uint8_t res;
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uint16_t val;
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res = McuINA260_ReadPowerRegister(&val);
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if (res==ERR_OK) {
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return McuINA260_ConvertPowerRegisterToMilliWatt(val);
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} else {
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return 0; /* error case */
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}
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}
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/*!
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* \brief Read the current measurement value from the device.
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* \return Current value, as uA (micro-Amps).
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*/
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int32_t McuINA260_ReadCurrent(void) {
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uint8_t res;
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int16_t val;
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res = McuINA260_ReadCurrentRegister(&val);
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if (res==ERR_OK) {
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return McuINA260_ConvertCurrentRegisterToMicroAmps(val);
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} else {
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return 0; /* error case */
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}
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}
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#if McuINA260_CONFIG_PARSE_COMMAND_ENABLED
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static uint8_t PrintStatus(const McuShell_StdIOType *io) {
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uint8_t buf[32];
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uint16_t value;
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int16_t i16;
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McuShell_SendStatusStr((unsigned char*)"McuINA260", (unsigned char*)"INA260 sensor status\r\n", io->stdOut);
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"0x");
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_CONFIG_I2C_ADDRESS);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"\r\n");
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McuShell_SendStatusStr((unsigned char*)" I2C addr", buf, io->stdOut);
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if (McuINA260_ReadConfigRegister(&value)==ERR_OK) {
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buf[0] = '\0';
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_ADDR_CONFIGURATION_REGISTER);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"h: 0x");
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McuUtility_strcatNum16Hex(buf, sizeof(buf), value);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"\r\n");
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} else {
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"FAILED\r\n");
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}
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McuShell_SendStatusStr((unsigned char*)" Config", buf, io->stdOut);
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if (McuINA260_ReadCurrentRegister(&i16)==ERR_OK) {
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int32_t uA = McuINA260_ConvertCurrentRegisterToMicroAmps(i16);
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buf[0] = '\0';
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_ADDR_CURRENT_REGISTER);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"h: 0x");
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McuUtility_strcatNum16Hex(buf, sizeof(buf), i16);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)", ");
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McuUtility_strcatNum32s(buf, sizeof(buf), uA/1000);
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McuUtility_chcat(buf, sizeof(buf), '.');
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if (uA<0) { /* value can be negative */
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uA = -uA; /* make it positive for the modulo operation below */
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}
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McuUtility_strcatNum32sFormatted(buf, sizeof(buf), uA%1000, '0', 3);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)" mA\r\n");
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} else {
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"FAILED\r\n");
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}
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McuShell_SendStatusStr((unsigned char*)" Current", buf, io->stdOut);
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if (McuINA260_ReadBusVoltageRegister(&value)==ERR_OK) {
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uint32_t uV = McuINA260_ConvertBusVoltageRegisterToMicroVoltage(value);
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buf[0] = '\0';
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_ADDR_BUS_VOLTAGE_REGISTER);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"h: 0x");
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McuUtility_strcatNum16Hex(buf, sizeof(buf), value);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)", ");
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McuUtility_strcatNum32u(buf, sizeof(buf), uV/1000);
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McuUtility_chcat(buf, sizeof(buf), '.');
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McuUtility_strcatNum32sFormatted(buf, sizeof(buf), uV%1000, '0', 3);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)" mV\r\n");
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} else {
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"FAILED\r\n");
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}
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McuShell_SendStatusStr((unsigned char*)" Bus voltage", buf, io->stdOut);
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if (McuINA260_ReadPowerRegister(&value)==ERR_OK) {
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buf[0] = '\0';
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_ADDR_POWER_REGISTER);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"h: 0x");
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McuUtility_strcatNum16Hex(buf, sizeof(buf), value);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)", ");
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McuUtility_strcatNum32u(buf, sizeof(buf), McuINA260_ConvertPowerRegisterToMilliWatt(value));
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)" mW\r\n");
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} else {
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"FAILED\r\n");
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}
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McuShell_SendStatusStr((unsigned char*)" Power", buf, io->stdOut);
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if (McuINA260_ReadAlertLimitRegister(&value)==ERR_OK) {
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buf[0] = '\0';
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_ADDR_ALERT_LIMIT_REGISTER);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"h: 0x");
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McuUtility_strcatNum16Hex(buf, sizeof(buf), value);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"\r\n");
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} else {
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"FAILED\r\n");
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}
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McuShell_SendStatusStr((unsigned char*)" Alert limit", buf, io->stdOut);
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if (McuINA260_ReadManufacturereIDRegister(&value)==ERR_OK) {
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buf[0] = '\0';
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_ADDR_MANUFACTURER_ID_REGISTER);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"h: 0x");
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McuUtility_strcatNum16Hex(buf, sizeof(buf), value);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"\r\n");
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} else {
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"FAILED\r\n");
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}
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McuShell_SendStatusStr((unsigned char*)" Manufac. ID", buf, io->stdOut);
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if (McuINA260_ReadDieIDRegister(&value)==ERR_OK) {
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buf[0] = '\0';
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McuUtility_strcatNum8Hex(buf, sizeof(buf), McuINA260_ADDR_DIE_ID_REGISTER);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"h: 0x");
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McuUtility_strcatNum16Hex(buf, sizeof(buf), value);
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McuUtility_strcat(buf, sizeof(buf), (unsigned char*)"\r\n");
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} else {
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McuUtility_strcpy(buf, sizeof(buf), (unsigned char*)"FAILED\r\n");
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}
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McuShell_SendStatusStr((unsigned char*)" Die ID", buf, io->stdOut);
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return ERR_OK;
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}
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static uint8_t PrintHelp(const McuShell_StdIOType *io) {
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McuShell_SendHelpStr((unsigned char*)"INA260", (unsigned char*)"Group of INA260 commands\r\n", io->stdOut);
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McuShell_SendHelpStr((unsigned char*)" help|status", (unsigned char*)"Print help or status information\r\n", io->stdOut);
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McuShell_SendHelpStr((unsigned char*)" reset", (unsigned char*)"Reset the device with the reset bit\r\n", io->stdOut);
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McuShell_SendHelpStr((unsigned char*)" config <val>", (unsigned char*)"Write a value to the configuration register\r\n", io->stdOut);
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return ERR_OK;
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}
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uint8_t McuINA260_ParseCommand(const unsigned char* cmd, bool *handled, const McuShell_StdIOType *io) {
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uint8_t res = ERR_OK;
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if (McuUtility_strcmp((char*)cmd, McuShell_CMD_HELP) == 0
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|| McuUtility_strcmp((char*)cmd, "INA260 help") == 0)
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{
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*handled = true;
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return PrintHelp(io);
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} else if ( (McuUtility_strcmp((char*)cmd, McuShell_CMD_STATUS)==0)
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|| (McuUtility_strcmp((char*)cmd, "INA260 status")==0)
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)
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{
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*handled = true;
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res = PrintStatus(io);
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} else if (McuUtility_strcmp((char*)cmd, "INA260 reset")==0) {
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*handled = true;
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return McuINA260_WriteResetBit();
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} else if (McuUtility_strncmp((char*)cmd, "INA260 config ", sizeof("INA260 config "-1))==0) {
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const unsigned char *p;
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int32_t val;
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*handled = true;
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p = cmd + sizeof("INA260 config "-1);
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if (McuUtility_xatoi(&p, &val)==ERR_OK && val>=0) {
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return McuINA260_WriteConfigRegister(val);
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}
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}
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return res;
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}
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#endif /* McuINA260_CONFIG_PARSE_COMMAND_ENABLED */
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void McuINA260_Deinit(void) {
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/* nothing needed */
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}
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void McuINA260_Init(void) {
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/* nothing needed */
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}
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