Search found 10 matches

by hoainguyen265
Mon Mar 04, 2019 3:24 am
Forum: General Discussion
Topic: Ways to make binary smaller?
Replies: 15
Views: 9258

Re: Ways to make binary smaller?

Howdy John, Lets imagine the problem in the small. Imagine you have two C source files ... let us call one "idf.c" and the other "app.c". Now imagine inside idf.c you have the following: void myFunc() { printf("Hello world!\n"); } now imagine that in app.c we want to call the function: void main() ...
by hoainguyen265
Fri Dec 28, 2018 8:48 am
Forum: ESP32 IDF
Topic: ESP32 OTA with encrypted firmware
Replies: 3
Views: 1238

ESP32 OTA with encrypted firmware

https://docs.espressif.com/projects/esp-idf/en/latest/security/flash-encryption.html In ESP document for flash encryption i found OTA updates to encrypted partitions will automatically write encrypted, as long as the esp_partition_write function is used. And in esp_ota_write we use esp_partition_wr...
by hoainguyen265
Wed Dec 26, 2018 9:05 am
Forum: ESP32 IDF
Topic: Support DFU for main chip
Replies: 5
Views: 1699

Re: Support DFU for main chip

So think that i will set the subtype of dfu_app to ota_2. And the i will custom ota process. I don't use esp_ota_get_next_update_partition I will use: esp_partition_find esp_partition_find_first to get the ota partition i want to update. It's mean when i'm in ota_0, i update to ota_1, when i'm in ot...
by hoainguyen265
Wed Dec 26, 2018 8:49 am
Forum: ESP32 IDF
Topic: Support DFU for main chip
Replies: 5
Views: 1699

Re: Support DFU for main chip

You probably need to use another subtype, such as 'test'. I think the partition table generator will also accept other integer values which are not used by defined subtypes. I tried with subtype 'test' and 0xFF and failed. This is my partition table https://drive.google.com/file/d/1Tx98pWjvyKSI7o-e...
by hoainguyen265
Wed Dec 26, 2018 8:37 am
Forum: ESP32 IDF
Topic: Setting wifi configuration
Replies: 20
Views: 4906

Re: Setting wifi configuration

Nice :D
by hoainguyen265
Tue Dec 25, 2018 10:30 am
Forum: ESP32 IDF
Topic: Support DFU for main chip
Replies: 5
Views: 1699

Re: Support DFU for main chip

Instead of modifying the bootloader to use the drivers, you may create a separate small application which will handle the DFU, and place it into one of the app partitions. Then in the main app, use esp_ota_set_boot_partition function to boot the DFU application, and call "esp_restart". Bootloader w...
by hoainguyen265
Tue Dec 25, 2018 7:11 am
Forum: ESP32 IDF
Topic: Setting wifi configuration
Replies: 20
Views: 4906

Re: Setting wifi configuration

I think it just like using wifi on mobile phone. When use want to connect to another wifi, you just disconnect and reconnect. And calling esp_wifi_start(); esp_wifi_stop() is the same with disable and enable wifi on mobile phone and doing this periodically is not good. So in my opinion, if you just ...
by hoainguyen265
Tue Dec 25, 2018 4:04 am
Forum: ESP32 IDF
Topic: Setting wifi configuration
Replies: 20
Views: 4906

Re: Setting wifi configuration

How about just disconnect wifi, set up new config and reconnect to wifi again?
by hoainguyen265
Tue Dec 25, 2018 3:26 am
Forum: ESP32 IDF
Topic: Support NanoPb
Replies: 1
Views: 856

Support NanoPb

Hi all,

I want to use protobuf in my esp32 project with nanopb.
About nanopb https://github.com/nanopb/nanopb

Anyone can help me to add this to esp32 build system?
Thanks.
by hoainguyen265
Tue Dec 25, 2018 3:17 am
Forum: ESP32 IDF
Topic: Support DFU for main chip
Replies: 5
Views: 1699

Support DFU for main chip

In my production, I have to support DFU for main chip over I2C communication by ESP32. But I don't want to do it in ESP32 main app. I want main app just downloading firmware from server and save to flash. After that, ESP32 reboot, boot loader will read firmware from flash and connect to main chip to...

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