Search found 15 matches

by chriselef
Thu May 23, 2019 2:05 pm
Forum: ESP-IDF
Topic: Deep sleep wake up problem <SOLVED>
Replies: 2
Views: 6669

Re: Deep sleep wake up problem <SOLVED>

Thanks WiFive...
That was the problem
by chriselef
Fri May 17, 2019 4:41 pm
Forum: ESP-IDF
Topic: Deep sleep wake up problem <SOLVED>
Replies: 2
Views: 6669

Deep sleep wake up problem <SOLVED>

Hello all, The problem I am going to describe have been tested on both the latest IDF and the stable 3.2 We got a batch of a hundred boards that we designed around the ESP32. The modules that are populated, are marked as ESP32-WROOM-32. The problem we are facing is that when the module wakes up from...
by chriselef
Thu Apr 11, 2019 8:38 am
Forum: ESP-IDF
Topic: [SOLVED] NVS encryption and nvs_get_str behaviour
Replies: 3
Views: 5337

[SOLVED] NVS encryption and nvs_get_str behaviour

Wrong offset on the burning of the keys.. it should be 0x310000 :oops: Hello all, I am working on a second product based on the ESP32 and want to use the NVS encryption mechanism to encrypt some strings. When using non-encryption on the NVS these strings are loading correctly. The encryption part se...
by chriselef
Wed Feb 06, 2019 3:34 pm
Forum: Hardware
Topic: ESP-WROVER-KIT V4.1 BOM
Replies: 1
Views: 3496

ESP-WROVER-KIT V4.1 BOM

Hello, Does anyone has the BOM of ESP-WROVER-KIT V4.1 ? I am trying to figure out the external RTC crystal (brand, type, load capacitors etc) that are used on that kit so, I can test the same type on an ESP32-WROOM-32 board I have designed and face a stability on the behaviour of the RTC oscillator ...
by chriselef
Tue Feb 05, 2019 12:56 pm
Forum: Hardware
Topic: External RTC 32768Hz crystal
Replies: 0
Views: 3353

External RTC 32768Hz crystal

Hello all, The module is an ESP32-WROOM-32 (ESP32D0WDQ6 (revision 1)) On a new product we need to use the RTC for deep sleep wake up, time keeping and sensing some buttons on RTC_GPIOs for forced wake ups from deep sleep. The problem is that some times the crystal fails to start (?) resulting the mo...
by chriselef
Wed Jul 25, 2018 3:57 pm
Forum: ESP-IDF
Topic: Encrypting device specific data
Replies: 9
Views: 11988

Re: Encrypting device specific data

Thank you both for the information I tried the wearleveling example just to check that I could mount and work the fat partition i added in partitions.csv. nvs,data,nvs,0x9000,16K, otadata,data,ota,0xd000,8K, phy_init,data,phy,0xf000,4K, factory,app,factory,0x10000,1M, ota_0,app,ota_0,0x110000,1M, ot...
by chriselef
Mon Jul 23, 2018 2:12 pm
Forum: ESP-IDF
Topic: Encrypting device specific data
Replies: 9
Views: 11988

Encrypting device specific data

hello, I need to load multiple esp32 devices with different data like certificates, configuration files etc. and encrypted them. In a previous attempt I tried to use spiffs.. That went pretty much as expected.. easy build and flash on each esp32.. When I enabled the encryption the spiffs partition d...
by chriselef
Mon Jul 23, 2018 1:35 pm
Forum: ESP-IDF
Topic: Protection on the flash read
Replies: 12
Views: 28241

Protection on the flash read

Chris wrote: I have a problem understanding on how to protect the firmware read from flash through the serial port and the jtag.. What efuses should I burn ? is that operation reversible ? thanks Chris ESP_Angus wrote: You can't protect the flash from physical readout completely, because it's exter...
by chriselef
Mon Jul 23, 2018 6:46 am
Forum: ESP-IDF
Topic: Secure boot and Flash encryption
Replies: 6
Views: 9286

Re: Secure boot and Flash encryption

Thanks ESP_igrr..

I'll see what I can do.. I have some plain text data in that partition which I would like to be encrypted..

regards
Chris
by chriselef
Fri Jul 20, 2018 12:28 pm
Forum: ESP-IDF
Topic: Secure boot and Flash encryption
Replies: 6
Views: 9286

Re: Secure boot and Flash encryption

Hello, I couldn't wait for the new release to come out and tried 86148a740b12b to see how this will go. :) It worked as expected.. esp_flash_encryption_enabled() returns true and when I dumped the data I couldn't locate any string that there are in an un-encrypted firmware bin .. The problem, I enco...