Search found 47 matches

by kostyan5
Fri Aug 17, 2018 6:48 pm
Forum: Hardware
Topic: What is the purpose of CAP1 CAP2 pins?
Replies: 5
Views: 294

Re: What is the purpose of CAP1 CAP2 pins?

Thanks for clarifying. Do you have any numbers regarding the difference in Deep Sleep current draw with vs without CAP1 and CAP2? Current data sheet says Power Sleep (RTC timer + RTC memory) is 10uA. What sort of increase are we talking about if CAP1 and CAP2 are removed? Some rought estimate would ...
by kostyan5
Wed Aug 15, 2018 2:04 pm
Forum: Hardware
Topic: What is the purpose of CAP1 CAP2 pins?
Replies: 5
Views: 294

Re: What is the purpose of CAP1 CAP2 pins?

Bump. Anyone?
by kostyan5
Thu Aug 09, 2018 2:42 pm
Forum: Hardware
Topic: What is the purpose of CAP1 CAP2 pins?
Replies: 5
Views: 294

Re: What is the purpose of CAP1 CAP2 pins?

Can anyone from espressif clarify this please?
by kostyan5
Tue Aug 07, 2018 5:29 pm
Forum: Hardware
Topic: What is the purpose of CAP1 CAP2 pins?
Replies: 5
Views: 294

What is the purpose of CAP1 CAP2 pins?

The hardware design guide says the following but it's still very unclear: The schematics of Pin47 CAP2 and Pin48 CAP1 is shown in Figure 8. C5 (10 nF) that connects to CAP1 should be of high precision. For the RC circuit between CAP1 and CAP2 pins, please refer to Figure 8. Removing the RC circuit m...
by kostyan5
Wed Jun 27, 2018 11:38 pm
Forum: ESP32 IDF
Topic: Flashing with no factory partition
Replies: 2
Views: 142

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: 142

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: 238

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: 238

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: 240

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: 346

Re: esptool fatal error

ESP_Angus, thanks for help. Updating esp tool to 2.2.1 fixed the issue.