MPXH6400A

MPXH6400A is a pressure sensor IC (20 kPa to 400 kPa) made by NXP Semiconductors. This posting will provide the OSS-ECAL(Open Source Software for Electronic Components Abstraction Layer) for MPXH6400A.
MCU interface : ADC

CAUTION:Please be sure to refer to the latest version of the Datasheet prior to actual design.

MPXH6400A

General description

The NXP MPXxx6400A series sensor integrates on-chip, bipolar op amp circuitry and thin film resistor networks to provide a high output signal and temperature compensation. The small form factor and high reliability of on-chip integration make this pressure sensor a logical and economical choice for the system designer.
The MPXxx6400A series piezoresistive transducer is a state-of-the-art, monolithic, signal conditioned, silicon pressure sensor. This sensor combines advanced micromachining techniques, thin film metallization, and bipolar semiconductor processing to provide an accurate, high level analog output signal that is proportional to applied pressure.

Feature

  • Improved accuracy at high temperature
  • Available in super small outline package
  • 1.5% maximum error over 0 °C to 85 °C
  • Fully calibrated and compensated
  • Ideally suited for microprocessor or microcontroller-based systems
  • Temperature compensated from -40 °C to +125 °C
  • Durable thermoplastic surface mount package
  • Package porting and mounting options enable tube attachment for liquefied natural gas (LPG) or remote sensing applications

Application

  • Fuel injected car engines
  • Vehicles powered by green gases (for example LPG and CNG)
  • Small engines
  • Industrial controls

OSS-ECAL specification

API Function

etSTS oMPXH6400A( etCMD cmd, float32* rlt )

The oMPXH6400A function is an API function that executes MPXH6400A processing according to the command in the argument.

Return valueetSTSOSS-ECAL status code
eSTS_FINCompleted successfully
eSTS_ERR_MINMinimum Pressure error (rlt is minimum Pressure)
eSTS_ERR_MAXMaximum Pressure error (rlt is maximum Pressure)
eSTS_ERR_HAL_ADCHAL ADC Error
eSTS_ERR_COMMAND_CODECommand selection error
eSTS_ERR_OTHERS_RUNError during execution of other components
eSTS_ERR_ADC_OBJECTAD conversion object selection error
Parameter INetCMD cmdOSS-ECAL command code
eCMD_STARTCommand to start AD conversion.
eCMD_READCommand that reads the AD conversion value, converts the AD conversion value to a characteristic Pressure, and stores the Pressure in rlt.

AD conversion value to Pressure conversion equation
Voltage value = (AD conversion value × VDD) / ( 2AD bit )
Pressure = ((voltage value – voltage offset value) / gain) + Pressure offset value (Min, Max Limit)
eCMD_START_READCommand that starts AD conversion, waits for AD conversion to finish, reads out the AD conversion value, converts the AD conversion value to a characteristic Pressure, and stores the Pressure in rlt.

AD conversion value to Pressure conversion equation
Voltage value = (AD conversion value × VDD) / ( 2AD bit )
Pressure = ((voltage value – voltage offset value) / gain) + Pressure offset value (Min, Max Limit)
Parameter OUTfloat32* rltPressure 20 to 400 [kPa]

Command Correspondence Table by HAL

ArduinoArduinoeCMD_START_READ
ARMMbedeCMD_START_READ
AUTOSARAUTOSAR
Debian ProjectDebian(Linux)eCMD_START_READ
InfineonModusToolbox eCMD_START_READ
NXPMCUXpresso MXRT1051B_1052BeCMD_START
eCMD_READ
eCMD_START_READ
RenesasSSPeCMD_START
eCMD_READ
eCMD_START_READ
STMSTM32Cube FW_F4 eCMD_START
eCMD_READ
eCMD_START_READ
etSTS oMPXH6400A_START(void)

The oMPXH6400A_START function is an API function to start AD conversion of the MPXH6400A.

Return valueetSTSOSS-ECAL status code
eSTS_FINCompleted successfully
eSTS_ERR_HAL_ADCHAL ADC Error
eSTS_ERR_OTHERS_RUNError during execution of other components
eSTS_ERR_ADC_OBJECTAD conversion object selection error

Function Correspondence Table by HAL

ArduinoArduino
ARMMbed
AUTOSARAUTOSARX
Debian ProjectDebian(Linux)
InfineonModusToolbox
NXPMCUXpresso MXRT1051B_1052BX
RenesasSSPX
STMSTM32Cube FW_F4 X
etSTS oMPXH6400A_READ( float32* rlt )

The oMPXH6400A_READ function is an API function that checks for the end of AD conversion, reads the AD conversion value, converts the AD conversion value to a characteristic Pressure, and stores the Pressure in rlt.

AD conversion value to Pressure conversion equation
Voltage value = (AD conversion value × VDD) / ( 2AD bit )
Pressure = ((voltage value – voltage offset value) / gain) + Pressure offset value (Min, Max Limit)

Return valueetSTSOSS-ECAL status code
eSTS_FINCompleted successfully
eSTS_ERR_MINMinimum Pressure error (rlt is minimum Pressure)
eSTS_ERR_MAXMaximum Pressure error (rlt is maximum Pressure)
eSTS_ERR_HAL_ADCHAL ADC Error
eSTS_ERR_TIMEOUTADC Timeout error (AUTOSAR only)
eSTS_ERR_OTHERS_RUNError during execution of other components
eSTS_ERR_ADC_OBJECTAD conversion object selection error
Parameter OUTfloat32* rltPressure 20 to 400 [kPa]

Function Correspondence Table by HAL

ArduinoArduino
ARMMbed
AUTOSARAUTOSARXTime-out time ADC_TIMEOUT [us] setting
Debian ProjectDebian(Linux)
InfineonModusToolbox
NXPMCUXpresso MXRT1051B_1052BX
RenesasSSPX
STMSTM32Cube FW_F4 XTime-out time HAL_MAX_DELAY
etSTS oMPXH6400A_START_READ( float32* rlt )

The oMPXH6400A_START_READ function is an API function that starts an AD conversion, waits for the AD conversion to finish, reads the AD conversion value, converts the AD conversion value to a Pressure characteristic, and stores the Pressure in rlt.

AD conversion value to Pressure conversion equation
Voltage value = (AD conversion value × VDD) / ( 2AD bit )
Pressure = ((voltage value – voltage offset value) / gain) + Pressure offset value (Min, Max Limit)

Return valueetSTSOSS-ECAL status code
eSTS_FINCompleted successfully
eSTS_ERR_MINMinimum Pressure error (rlt is minimum Pressure)
eSTS_ERR_MAXMaximum Pressure error (rlt is maximum Pressure)
eSTS_ERR_HAL_ADCHAL ADC Error
eSTS_ERR_OTHERS_RUNError during execution of other components
eSTS_ERR_ADC_OBJECTAD conversion object selection error
Parameter OUTfloat32* rltPressure 20 to 400 [kPa]

Function Correspondence Table by HAL

ArduinoArduinoX
ARMMbedX
AUTOSARAUTOSAR
Debian ProjectDebian(Linux)X
InfineonModusToolbox X
NXPMCUXpresso MXRT1051B_1052BX
RenesasSSPX
STMSTM32Cube FW_F4 XTime-out time HAL_MAX_DELAY
Sample program
etSTS oss_ecal( void )
{
        /*********************************************************************/
        /* ADC Gr is registered with multiple Ch and AD conversion is        */
        /* performed to convert MPXH6400A pressure.                          */
        /*********************************************************************/
        Adc_ValueGroupType val = 0;
        sint32 wk = 0;
        float32 phy = 0.0F;
        
        /* ADC Gr(Multi-Ch) start */
        sts = oMCAL_ADC_GR_START( ADC_MPXH6400A_GR );
        if( sts == eSTS_FIN )
        {
                /* ADC Gr(Multi-Ch) value read */
                sts = oMCAL_ADC_GR_READ( ADC_MPXH6400A_GR, GR_BUF );
                if( sts == eSTS_FIN )
                {
                        /* MPXH6400A Pressure conversion */
                        /* Get A/D value */
                        val = *(GR_BUF+ADC_MPXH6400A_CH);
                        /* Linear characteristic conversion */
                        wk = (sint32)mac_max_u16( val );
                        sts = oPRC_CHAR_CONV_L_FF( wk, cCOEF_MPXH6400A, &phy );
                        if( sts == eSTS_FIN )
                        {
                                vgPHY = phy;
                        }
                        else
                        {
                                /* nothing to do */
                        }
                }
                else
                {
                        /* nothing to do */
                }
        }
        else
        {
                /* nothing to do */
        }
}
API functions for AUTOSAR

In AUTOSAR, the ADC group and channels of the MCU may be registered to the MCAL ADC channel group for AD conversion. In such a case, use the following API functions.

etSTS oMCAL_ADC_GR_START( Adc_GroupType gr )

The oMCAL_ADC_GR_START function is an API function that initiates conversion of a ADC channel group.

Return valueetSTSOSS-ECAL status code
eSTS_FINCompleted successfully
eSTS_HAL_BUSYHAL running
Parameter INAdc_GroupType grID value of ADC channel group
etSTS oMCAL_ADC_GR_READ( Adc_GroupType gr, Adc_ValueGroupType* buf )

The oMCAL_ADC_GR_READ function is an API function that checks the end of ADC conversion for the ADC channel group, reads each AD conversion value, and stores each AD conversion value in buf. This function has a Timeout function and should be used with the ADC_TIMEOUT value set.

Return valueetSTSOSS-ECAL status code
eSTS_FINCompleted successfully
eSTS_ERR_HAL_ADCHAL ADC Error
eSTS_ERR_TIMEOUTADC Timeout error (AUTOSAR only)
sSTS_ERR_PROCESSThe return value of the Adc_GetGroupStatus function is other than the following value.
ADC_STREAM_COMPLETED
ADC_BUSY
Parameter INAdc_GroupType grID value of ADC channel group
Parameter OUTAdc_ValueGroupType* bufFirst address of buffer of ADC channel group
etSTS oPRC_CHAR_CONV_L_FF( sint32 before, const stCOEF_L_FF coef, float32* rlt )

The oPRC_CHAR_CONV_L_FF function is a common process function. This function converts the value of the argument before (AD conversion value) to a voltage, converts the voltage linearly by the constant coef, and limits the converted value by the maximum minimum value.

Return valueetSTSOSS-ECAL status code
eSTS_FINCompleted successfully
eSTS_ERR_MINMinimum temperature error (rlt is minimum temperature)
eSTS_ERR_MAXMaximum temperature error (rlt is maximum temperature)
Parameter OUTfloat32* rltPressure 20 to 400 [kPa]

Files

Folder*FileSummary
MPXH6400A_HALNAME_VERSION/samplesample.c (.cpp)Sample Application Program
sample.hSample Application Header
MPXH6400A_HALNAME_VERSIONoMPXH6400A.c (.cpp)OSS-ECAL Program for MPXH6400A
oMPXH6400A.hOSS-ECAL Header for MPXH6400A
MPXH6400A_ARDUINO.inoSample application programs for Arduino
oss_ecal.hOSS-ECAL Common Header (Ver 01.00.00 or later, AUTOSAR is Ver 01.01.07 or later)
oTypes.hTypedef header file for AUTOSAR
user_setting.c (.cpp)Const and Table of User setting
user_setting.hHeader of User setting
readme.mdReadme
OSS-ECAL Terms of Use.txtOSS-ECAL Terms of Use

* For HALNAME, please refer to HAL Support.

HAL Support List

MCU/Board
manufacturer
HALMCU*Development environment*HALNAME
ArduinoArduino 1.8.6ATmega2560
ATmega328P
Mega 2560 Rev3
Arduino Pro Mini 3.3V
ARDUINO
ARMMbed 6.17.0STM32F401RESTM32 Nucleo-64 boardsMBED
AUTOSARAUTOSAR 4.4 (MCAL)S32K144S32K144EVB-Q100MCAL
InfineonModusToolbox HAL Cat1 2.4.3CYBLE-416045-02CY8CPROTO-063-BLE PSoC 6 BLE Prototyping KitModusToolbox
NXPMCUXpresso SDK
iMXRT1051B_1052B
ksdk2_0
MIMXRT1052DVL6AIMXRT1050-EVKBiMXRT1051B1052B
RenesasSSP 2.4.0R7FS7G27H3A01CFCS7G2 SKSSP
STMSTM32Cube FW_F4 V1.27.1STM32F401RESTM32 Nucleo-64 boardsSTM32F4
Debian ProjectDebian(Linux) v2022.04TI AM335xBeagleBone Black – Rev CLinux

* MCU and development environment at the time of development. Even if the same HAL is used, different MCUs and development environments may not work together.

OSS-ECAL Download

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This OSS-ECAL is a sample version and can be downloaded without user registration, but please accept the OSS-ECAL Terms of Use before downloading.

If you are unable to download the File, please contact us and let us know the model number and HAL type. We will send you the file as an email attachment.

Built-in How to

How to incorporate OSS-ECAL into user programs

How to incorporate multiple OSS-ECALs in a user program (same MCU function)

How to incorporate multiple OSS-ECALs in a user program (different MCU function)

How to incorporate multiple identical electronic components into a user program

How to reduce the impact on user programs by replacing electronic components

OSS-ECAL English
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