Response data is chopped.

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hi118
Level 3
Level 3
10 replies posted 10 sign-ins 5 questions asked

<Device>
・STM32H747I-DISCO

 STM32H747I-DISCO STMicroelectronics | Mouser
・LBEE0ZZ1WE-TEMP
 LBEE0ZZ1WE-TEMP Murata Electronics | Mouser
・Wi-Fi/BT module: 1DX M.2 Module
 1LV M.2 Module - Embedded Artists
< Project >
・STM32 Connectivity Expansion Pack 1.1.0
 ble_wifi_onbording

I was checking the operation waveform of the example with an oscilloscope.

After sending the HCI_RESET command, RTS does not return from High to Low during the response as shown in the figure below, and the response data is interrupted.Is this normal?

What can I do if this is not normal?

Correspondence with each signal.
A0:TX(OUT) / A1:RX(IN) /
Ch1:BT_REG_ON(OUT) / Ch2:RTS(OUT) / Ch3:CTS(IN)

005.png006.png007.png

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1 Solution
hi118
Level 3
Level 3
10 replies posted 10 sign-ins 5 questions asked

It was caused by mixing paths for different modules in IAR-EW's optional include settings.

View solution in original post

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4 Replies
BragadeeshV
Moderator
Moderator
Moderator
First question asked 1000 replies posted 750 replies posted

Hi @hi118 

Could you please clarify if you are referring to the RTS of the controller side or the host side?

Regards,
Bragadeesh
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Hi @BragadeeshV 

Could you please clarify if you are referring to the RTS of the controller side or the host side?
It becomes the host side (the side that outputs BT_REG_ON).

Regards,
hi118

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BragadeeshV
Moderator
Moderator
Moderator
First question asked 1000 replies posted 750 replies posted

Hi @hi118 ,

  I see that the RTS line is low when the controller is transmitting data. Are you referring to the intermittent peaks in the RTS waveform? Do you have a Digital Oscilloscope such as Salae to show a complete waveform?

Regards,
Bragadeesh
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hi118
Level 3
Level 3
10 replies posted 10 sign-ins 5 questions asked

It was caused by mixing paths for different modules in IAR-EW's optional include settings.

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