Search found 43 matches

by kostyan5
Wed Jun 27, 2018 11:38 pm
Forum: ESP32 IDF
Topic: Flashing with no factory partition
Replies: 2
Views: 112

Re: Flashing with no factory partition

That's it. Thanks.
by kostyan5
Wed Jun 27, 2018 6:27 pm
Forum: ESP32 IDF
Topic: Flashing with no factory partition
Replies: 2
Views: 112

Flashing with no factory partition

A recent commit (3e0ac4db7931b7c234c180e743b7708d09482e70) removed PARTITION_TABLE_CUSTOM_APP_BIN_OFFSET and is now extracting APP_OFFSET by looking for app/factory in partition table. Our partition table doesn't have a factory subtype. Instead we use two app/ota partitions (app/ota_0 and app/ota_1)...
by kostyan5
Mon Apr 09, 2018 9:11 pm
Forum: General Discussion
Topic: Flash write speed
Replies: 1
Views: 216

Re: Flash write speed

After further digging, it turns out that that particular Macronix part defaults to Ultra Low Power mode which reduces speeds. This almost certainly explains what I'm experiencing.
by kostyan5
Mon Apr 09, 2018 7:46 pm
Forum: General Discussion
Topic: Flash write speed
Replies: 1
Views: 216

Flash write speed

Hello, We recently switched the SPI flash chip on our product. We went from Winbond (W25Q32JV) to Macronix (MX25R3235F). For some reason flash write speeds decreased by a factor of 3. This includes both flashing and formatting SPIFFS speeds. With winbond we were able to flash fw or format spiffs in ...
by kostyan5
Mon Jan 29, 2018 2:45 pm
Forum: General Discussion
Topic: RF Certifications Test Suite
Replies: 1
Views: 227

RF Certifications Test Suite

Hi,

Is there a test suite for doing RF certifications? We need to do FCC, UL, and CE. Is there firmware that will cycle through all channels, data rates, etc.?

Thanks,

Konstantin
by kostyan5
Thu Jan 25, 2018 3:45 pm
Forum: ESP32 IDF
Topic: esptool fatal error
Replies: 3
Views: 329

Re: esptool fatal error

ESP_Angus, thanks for help. Updating esp tool to 2.2.1 fixed the issue.
by kostyan5
Wed Jan 24, 2018 10:35 pm
Forum: ESP32 IDF
Topic: esptool fatal error
Replies: 3
Views: 329

esptool fatal error

Something was recently changed in ESP-IDF and now I can no longer program at 1500000 baud. The max it will do is 115200. Anything higher than that and I get: A fatal error occurred: Invalid head of packet Any ideas what could be causing this? Nothing changed but the esp-idf was updated. 1500000 baud...
by kostyan5
Thu Jan 11, 2018 3:07 pm
Forum: Hardware
Topic: What are Main Crystal requirements?
Replies: 3
Views: 1685

Re: What are Main Crystal requirements?

Current data sheet and hardware design guide for ESP32 only mentions the frequency of the main crystal. Are there stability and accuracy requirements? We currently use 10ppm, but 40-50ppm are cheaper. Are those an option?
by kostyan5
Mon Nov 06, 2017 6:26 pm
Forum: General Discussion
Topic: Pre-programming flash at manufacturing
Replies: 2
Views: 767

Re: Pre-programming flash at manufacturing

What's the easiest way to combine the 3 separate bin files into one single bin?
by kostyan5
Fri Oct 20, 2017 2:25 pm
Forum: General Discussion
Topic: NVS and wear leveling
Replies: 2
Views: 508

NVS and wear leveling

Does NVS use wear leveling? If not, any plans to support it?

In our use case, we update a value in NVS every few mins and would hit 100,000 in about a year.