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max30100 notes

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I want to connect the sensor max30100 to the Raspberry Pi board.I think everything is accurate.When I run the code, the red light flashes.I activated I2C.max30100 device address 0x57 is detected. When I put my hand on the sensor, I get the following error.

Error:

max30100 got exception [errno 121] remote i/o error

I use the source code below.

import os
import sys
import time
import max30100

def main():
    try:
        mx30 = max30100.MAX30100()
        mx30.set_mode(max30100.MODE_SPO2)
        # mx30.reset()
        # time.sleep(1)
        # mx30.startup()
        # time.sleep(1)

        i = 0
        while i < 30:
            mx30.set_mode(max30100.MODE_HR)
            mx30.read_sensor()
            # # The latest values are now available via .ir and .red
            # print("HeartRate sensor .ir: {} and .red: {}".format(mx30.ir, mx30.red))

            # time.sleep(2)
            mx30 = max30100.MAX30100()
            mx30.reinit()
            mx30.set_mode(max30100.MODE_SPO2)
            # time.sleep(1)
            mx30.read_sensor()
            # The latest values are now available via .ir and .red
            print("HRate sensor .ir: {} and SpO2 .red: {}".format(mx30.ir, mx30.red))

            # temp = mx30.get_temperature()
            # print("Temperature {}\n".format(temp))
            mx30.reset()
            time.sleep(1)

            i = i + 1
        mx30.reset()
        # mx30.shutdown()

    except Exception as e:
        print("Max30100 got exception {}".format(e))

if __name__ == "__main__":
  main()

https://github.com/whilemind/MAX30100u

connection PINS GPIO and sensor max30100

(3.3V -VIN)
(I2C SDA1 - SDA)
(I2C SCL1 - SCL)
(PIN7 - INT )
(GND - GND)

Can anyone help me to fix this issue?

 New contributor
0

Question

The OP has setup and successfully detected an I2C MAX30100 Pulse Oximeter and Heart-Rate Sensor module. But when trying to read the sensor, he encountered the following two problems:

(1) Gets the "Exception remote I/O error [error 121]",

(2) Gets only zero values for the red LED and IR Led outputs.

How to fix it?


Answer

Part A – Remote I/O Error [Error #121]

(1)

/ to continue, …


Part B – Always Reading Zero Values of Red LED and IR LED

(1)

/ to continue, …


References

(1)

/ to continue, …


Appendices

Appendix A – MAX30100 Register Map Summary

/ to continue, …


Figures

Fig 1 – MAX3010x Register Map Summary

max3010x reg map summary


.END

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