CC3120MOD: How to detect the formatting process in progress after Direct SPI Programming

Hi Yojiro,

Is the customer loading a gang image over the external SPI flash interface? Are you talking about the formatting that occurs during the device's first boot?

Best regards,

Sarah

Hi, Sarah-san,

Sarah P said:

Is the customer loading a gang image over the external SPI flash interface? Are you talking about the formatting that occurs during the device's first boot?

Yes, they are using the external SPI flash interface when loading a gang image.

They are asking about the first boot.

Thank you.

Best Regards,

Yojiro

Hi, Sarah-san,

We received comments from our customer.

After writing the flash with the External SPI Interface, they waited at least T3 (1.35 seconds) after turning on the power, and then executed sl_Start and sl_DeviceGet to get the version.
They say that on the first boot after writing, sl_Start will be successful immediately, but it will take more than 10 seconds for sl_DeviceGet to respond. From the second time onwards, sl_DeviceGet will respond immediately.
If it is started for the first time after writing the flash with the External SPI Interface, is the CC3120 finished with all the processing related to writing the service pack?

Could you confirm it ?

Best Regards,

Yane

Hi Yane,

What servicepack version is flashed to the CC3120MOD? What host driver version?

Best regards,

Sarah

Hi, Sarah-san,

They are using the following versions:
- Service Pack : sp_3.16.0.1_2.0.0.0_2.2.0.7
- Host driver : 4.20.00.10

There seems to be no version dependency on the first boot time after flash writing.

Best Regards,

Yane

Hi Yane,

A delay on sl_DeviceGet() is not related to the flashing procedure. By the time sl_Start() completes, the filesystem is already created.

Can your customer capture NWP logs and use a logic analyzer to capture their host interface?

Best regards,

Sarah

Hi, Sarah-san,

They can not capture NWP logs.

I'm sorry to give you incorrect information.

Their procedure when powering on the module is as follows:
1. Operate nRESET and nHIB according to section 8.12.1 Power-Up Sequencing of the data sheet.
2. Wait 2 seconds and then call sl_Start.
3. When sl_Start finishes normally, call sl_DeviceGet to read the version.

At the first startup after writing the service pack, it takes about 10 seconds for sl_Start to finish normally.
There is no problem with the operation after sl_Start ends normally.

Is it okay to call sl_Start at the above timing after writing the service pack?

Thank you.

Best Regards,
Yane

Hi Yane,

There is no issue delaying calling sl_Start, but I'm concerned that sl_Start takes so long to return. Why are they not able to capture NWP logs? Can they capture the communication between the CC3120MOD and the host MCU using a logic analyzer?

Best regards,

Sarah