CCS/CC2652R: osal_snv_write

user6329856

Prodigy 80 points

Part Number: CC2652R
Other Parts Discussed in Thread: BLE-STACK

Tool/software: Code Composer Studio

Hi,

I successfully used the osal_snv_write interface, but I still have some questions to determine:

1.Is the Write operation a synchronous operation? Is the flash already written when the function returns？

2.What pre-operation is required for threads that can call nvs api, similar to registering icall?

3.Multithreading writes to the same position or different positions at the same time (like different members in struct), whether you need to add another lock or the driver comes with a lock？

4.Can read or write in an interrupt (soft and hard) ?

BR,

Aaron

over 5 years ago

0 Elin W over 5 years ago

TI__Genius 14845 points

Hi Aaron,

Assigning an expert to comment.

Thanks,
Elin

0 Marie H over 5 years ago

TI__Guru* 82341 points

Hi Aaron,

1. Yes

2. To use osal_snv you need to register your task with ICall.

3. Hm. Every time you write to an osal_snv ID you are actually moving the item to the end of the free snv area, creating a new item with the ID and writing the value. Thus it's not technically possible to write to the same location in memory for the two different threads. If this is confusing please read the explanation in the BLE-Stack User's Guide: