Pressure Sensors Forum Discussions

I hope this message finds you well. I'm currently working with the SP40+ chip and exploring its capabilities for a project. I have a query regarding the software functionalities and RF transmission capabilities. Specifically, I'm interested in knowing if the SP40+ chip, through its software interface, supports the transmission of customized strings via RF. Is it possible to send personalized strings such as "location of the tire" and "type of truck" via low-frequency RF transmission? Furthermore, could you provide guidance on whether these strings can be assigned and transmitted via the sensor's microcontroller through software configurations or if there's a specific procedure for transmitting such information via low-frequency RF? Any insights or documentation references regarding these capabilities would be immensely helpful for the project I'm currently working on. Thank you in advance for your assistance and support. Best regards. Show Less

In SP49 sensor measurement example code, 

The API Lib_Meas_Raw_Pressure(); gives RAW values of the sensor.

How can we convert this raw value to the exact normal value. 

OR

How can we convert this value to measurement value in its appropriate unit. 

E.g. pressure value should be converted to KPI or Psi.

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I'm using SP49 example code Low Power Monitoring Code. 

The main function in the code int main(void) does repeat every time we call the library function Lib_State_Low_Power(); and also all global variable values are also automatically set to zero.

What's the reason behind this and please provide solution for it.

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the original driver writes values to undocumented registers 0x0E, 0x0F & 0x62 (neither in the datasheet for the DPS368 nor DPS310).

See function _xensiv_dps3xx_correct_temperature in xensiv_dps3xx.c (below)

Can anyone tell me anything about this function?

Thank you very much
Thomas

 

 

static cy_rslt_t _xensiv_dps3xx_correct_temperature(xensiv_dps3xx_t* dev)
{
    uint8_t write_data = 0xA5;
    cy_rslt_t rc = _xensiv_dps3xx_reg_write(dev, 0x0E, &write_data, 1);
 
    if (rc == CY_RSLT_SUCCESS)
    {
        write_data = 0x96;
        rc = _xensiv_dps3xx_reg_write(dev, 0x0F, &write_data, 1);
    }
 
    if (rc == CY_RSLT_SUCCESS)
    {
        write_data = 0x02;
        rc = _xensiv_dps3xx_reg_write(dev, 0x62, &write_data, 1);
    }
 
    if (rc == CY_RSLT_SUCCESS)
    {
        write_data = 0x00;
        rc = _xensiv_dps3xx_reg_write(dev, 0x0E, &write_data, 1);
    }
 
    if (rc == CY_RSLT_SUCCESS)
    {
        write_data = 0x00;
        rc = _xensiv_dps3xx_reg_write(dev, 0x0F, &write_data, 1);
    }
 
    return rc;
}

 

 

 

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