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by ESP_Angus
Thu May 23, 2019 4:53 am
Forum: ESP32 IDF
Topic: TLS handshake slow ?
Replies: 7
Views: 160

Re: TLS handshake slow ?

Hi Danny,

There's normally some delay, but 7 seconds is very long! What cipher suite ends up being used for the connection?

Angus
by ESP_Angus
Wed May 22, 2019 7:58 am
Forum: General Discussion
Topic: ESP32 BUG cause software brick
Replies: 6
Views: 614

Re: ESP32 BUG cause software brick

Damn. Maybe it's not related to core dump then, I was just going on the last log message before it froze. I don't know of anything in particular with this commit, but this is the problem with "Development" versions (-dev) - they have had some basic automated testing but they're not comprehensively t...
by ESP_Angus
Wed May 22, 2019 1:06 am
Forum: General Discussion
Topic: Let's talk wifi and TCP
Replies: 6
Views: 1208

Re: Let's talk wifi and TCP

I may be beating a dead horse, but wifi performance in a busy office setting appears to be pretty bad. Hi John, Just to check all the variables: how is 2.4GHz WiFi performance for other devices in the same environment? ie if you connect a PC to the 2.4GHz network (ie same router, same frequency ban...
by ESP_Angus
Wed May 22, 2019 12:46 am
Forum: General Discussion
Topic: ESP32 BUG cause software brick
Replies: 6
Views: 614

Re: ESP32 BUG cause software brick

Got it, thanks.

If you now do "esptool.py erase_region 0x3a6000 0x32000", without changing anything else, does the firmware finish booting correctly?
by ESP_Angus
Tue May 21, 2019 5:02 am
Forum: ESP32 IDF
Topic: TCP Client Consuming Heap Memory
Replies: 2
Views: 88

Re: TCP Client Consuming Heap Memory

Kindly review and check where is it consuming the heap memory. Hi Ritu, You can use the heap tracing feature in IDF to find allocations which are not freed: https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/system/heap_debug.html#heap-tracing Note that closed TCP sockets in TIME_W...
by ESP_Angus
Tue May 21, 2019 4:58 am
Forum: General Discussion
Topic: ESP32 BUG cause software brick
Replies: 6
Views: 614

Re: ESP32 BUG cause software brick

It looks like maybe there is some problem with the core dump partition in flash? Is there any chance you could dump this partition with "esptool.py read_flash" and then send it to me? BTW, you say you ran the code for more than 1 year but it looks like you've more recently rebuilt the project with a...
by ESP_Angus
Tue May 21, 2019 12:32 am
Forum: ESP32 IDF
Topic: Use of SecureBoot+Flash Encryption in mass production
Replies: 3
Views: 136

Re: Use of SecureBoot+Flash Encryption in mass production

[*] I understand direct SPI readback can't be avoided and that Flash Encryption mitigates this issue. I furthermore understand that we can leverage Secure Boot to make sure only our code runs on the board. However, it seems that both techniques automatically initialise themselves and burn the respe...
by ESP_Angus
Tue May 21, 2019 12:19 am
Forum: ESP32 Arduino
Topic: DRAM segment data does not fit?
Replies: 2
Views: 82

Re: DRAM segment data does not fit?

ESP-IDF currently has a statically allocated memory limit of 160KB. The remaining DRAM has to be allocated dynamically. You can modify your code to allocate this large buffer dynamically at runtime, and it should work: Buffer *bufferA; Buffer *bufferB; void setup() { bufferA = new Buffer(); bufferB ...
by ESP_Angus
Mon May 20, 2019 5:40 am
Forum: Hardware
Topic: esp32-pico-d4 work with exteranl psram issue.
Replies: 1
Views: 65

Re: esp32-pico-d4 work with exteranl psram issue.

Support was added earlier this year, but it's not in a stable release yet.

It's in the IDF master branch and the release/v3.3 branch now, and will be in the v3.3 final release.

The master branch commit is here: https://github.com/espressif/esp-idf/co ... 2cb39c92e6
by ESP_Angus
Mon May 20, 2019 4:29 am
Forum: General Discussion
Topic: Can we code C++ using CMake
Replies: 3
Views: 494

Re: Can we code C++ using CMake

Hi Mike, One big difference is that components in CMake have to name all their source files, the "all files in source directories" behaviour from Make is not repeated (this is a CMake philosophical difference that we've adopted). Is it possible your C++ files are not named in the component CMakeList...

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