MCC 152 HAT is at address 0, but cannot be found

[seraph333]

Hi,

I have a Raspberry pi 2, and a MCC 152.

The RPI is showing a board at address 0, but not able to list the device, the MCC 152 is not found.

The MCC 152 was function at my Raspberry Pi 4.

When I place the jumper at A0, the MCC 152 now is found at address 1, but isn't the manual says "There must always be a board at address 0"

So why the single board MCC152 cannot be found at address 0?

 

 

[Fausto]

Hello @seraph333.

Do you have other third-party HAT boards on your Raspberry Pi 2 module?

Do you know the history of the Raspberry Pi 2 module and whether or not it is reliable?

If you have a second Raspberry Pi 2 module, then you can spend some time troubleshooting between the two Raspberry Pi 2 modules.

Otherwise, if the MCC 152 is detectable and functioning on address 0 (no jumpers) with the Raspberry Pi 4 module, then I would suggest using the Raspberry Pi 4 module. 

Regards,

Fausto

[seraph333]

22 minutes ago, Fausto said:

Hello @seraph333.

Do you have other third-party HAT boards on your Raspberry Pi 2 module?

Do you know the history of the Raspberry Pi 2 module and whether or not it is reliable?

If you have a second Raspberry Pi 2 module, then you can spend some time troubleshooting between the two Raspberry Pi 2 modules.

Otherwise, if the MCC 152 is detectable and functioning on address 0 (no jumpers) with the Raspberry Pi 4 module, then I would suggest using the Raspberry Pi 4 module. 

Regards,

Fausto

Hi, Fausto,

Thanks for your response.

I don't have other third-party HAT, but this MCC152 on the RPI 2.

I don't have any history about this RPI 2, other than it is new, but left in the lab for quite a long time.

My RPI 4 is used on other project, this MCC 152 HAT is pulled out from that project.

Since it can be recognized at address 1, can address 0 been left out without any board?

[Fausto]

Test the MCC 152 at address 1, with the Raspberry Pi 2, to see the limitations.

Have you tried the command:  sudo daqhats_read_eeproms

Edited July 12, 2023 by Fausto
added command

[seraph333]

1 hour ago, Fausto said:

Test the MCC 152 at address 1, with the Raspberry Pi 2, to see the limitations.

Have you tried the command:  sudo daqhats_read_eeproms

Hi, Fausto,

I did the command, both with and without jumper, with found the eeprom at address 1, without found the eeprom at address 0.

 

[Fausto]

After the command:  

sudo daqhats_read_eeproms

 

run the command:  daqhats_list_boards

Please reply with screen captures of both conditions, jumper on & jumper off. 

 

Also, check your RPI configuration (Raspberry->Preferences->RPI Configuration->Interfaces) to verify the SPI and I2C options are enabled.

Lastly, are you using a correct power supply with your Raspberry Pi 2?

Edited July 13, 2023 by Fausto
added additional comments