2 Replies Latest reply on Nov 5, 2015 11:26 PM by BoonT_56

NV stored data is deleted after OTA?

leo_su Nov 5, 2015 6:20 AM

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SDK: 2.2.1.

Tag: 920737.

app: OTA hello-sensor based app.

OTA firmware size ~ 20KB.

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Problem:

We use NV to store sensor calibration data into NV area; however we find
after OTA, those calibrated data will be deleted and it seems OTA download
also program/erase this area.

Is any other data area as MAC for customer to program their specific data
without reset during OTA?

userc_4697 OceanS_76 userc_3841

1. Re: NV stored data is deleted after OTA?

OceanS_76 Nov 5, 2015 6:55 AM (in response to leo_su)

Hi Leo,
I have two questions:
1. You didn't modified any OTA code (ws_upgrade.c and ws_upgread_ota.c), is it?
2. What size of the "sensor calibration data"?
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2. Re: NV stored data is deleted after OTA?

BoonT_56 Nov 5, 2015 11:26 PM (in response to leo_su)

The last section of the below blog may give some insights into your issue.

frch_1838401

WICED Smart BCM92073X EEPROM and SFLASH Layout
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