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ADS1247: ADS1247 use?

Simba Su
Intellectual 550 points

Part Number: ADS1247

ADS1247 use, this is our wiring diagram. We need to read the AIN0 and AIN1 channels and data,

1.May I ask if it is possible to configure the continuous reading mode, with the START pin always at a high level, to read data, change channels, read data, change channels, and repeat this cycle?

2.Could you provide reference routines?

image.png 

  • 0
    TI__Guru 58931 points

    Hi Simba Su,

    Yes you can pull the START pin high and the ADC will convert continuously. Do not send START / STOP commands in this mode however, you should not use these commands if you are going to use the START pin to control conversions. This is described in section 9.4.4 in the datasheet

    Writing to certain registers automatically resets the ADC, including the MUX0 register. The MUX0 register is where the ADC input mux is set. Refer to section 9.4.4.4 for more information about this digital filter reset operation

    The sequence you described should be sufficient to read data, change channels, read new data, change channels, etc. We do have some example code on the ADS1247 product page: https://www.ti.com/product/ADS1247?qgpn=ads1247#software-development

    -Bryan