STMF103RB

[MichalKrawacki]

Hello, Using this microcontroller with AFE4490 Breakout Board Kit and Pulse Oximeter Shield I have the same bad problems:

• 1st method is loading examples from Arduino Library won't compile due to redeclared "RESET" , so the next step like using OpenView doesn't matter.

• 2nd method is loading manually examples from: https://github.com/Protocentral/AFE4490_Oximeter/tree/f59b2d74fc27a488b90e599e8cf3954cacc0a3a0 which compile successfull and the R/IR LED are lighting, but after open dedicated software Processing GUI, the PPG-graph is only flat.

I really haven't idea what to do, try much combinations buy finally my set-up doesn't work correctly. Additionally OpenView 64-bit return error log after chosing Port COM and Device so I try to use 32-bit. Please contact

[joicetm]

Hi,

I think the afe4490 is working as the led started glowing since it will only start glowing after the chip initialization.

The issue could be in the uart data transfer or sampling.

I do not have an STMF103RB board to debug/reproduce the issue. I suggest you debug on the spi sample read and uart.

You may try,

• send the spo2 sample value to the uart without any data packet and verify the signal by plotting it manually. (signal for a short duration, may be 5-10 seconds)
• make sure you set the proper baud rate.
• send some dummi values (simulated data ) in the data packet format as we have demonstrated in the example to view it in the GUI.

[MichalKrawacki]

Hello, Using Arduino UNO R3, your AFE4490 shield work correctly (I loaded example 3 and visuale it on plotter in Arduino IDE). Your software open view 64 for windows doesn't start. Open view 32 display only flat lines. Baud rade is setting at 57 600 on PORT COM

śr., 7 lip 2021 o 16:15 Joice @.***> napisał(a):

Hi,

I think the afe4490 is working as the led started glowing since it will only start glowing after the chip initialization.

The issue could be in the uart data transfer or sampling.

I do not have an STMF103RB board to debug/reproduce the issue. I suggest you debug on the spi sample read and uart.

You may try,

• send the spo2 sample value to the uart without any data packet and verify the signal by plotting it manually. (signal for a short duration, may be 5-10 seconds)
• make sure you set the proper baud rate.
• send some dummi values (simulated data ) in the data packet format as we have demonstrated in the example to view it in the GUI.

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