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by ESP_igrr
Tue Sep 01, 2020 12:32 am
Forum: ESP-IDF
Topic: ESP32-S2 APB CLOCK is slow?
Replies: 4
Views: 244

Re: ESP32-S2 APB CLOCK is slow?

Hi kalata23, The issue you are observing is probably not related to the APB clock, but to the fact that interrupt entry has certain latency. It is not practical to have interrupts which occur more often than a few microseconds, unless you are using high-level interrupt handlers written in assembly (...
by ESP_igrr
Tue Sep 01, 2020 12:24 am
Forum: ESP-IDF
Topic: Undefined reference to f_gets/f_puts error
Replies: 1
Views: 111

Re: Undefined reference to f_gets/f_puts error

Hi olegboicenco, Indeed we hadn't enabled FF_USE_STRFUNC option, as we assume that FATFS library will be used together with the VFS mechanism. That way you can use C standard library functions (fgets, fputs) to work with files. If you have some existing code which uses FATFS APIs, you may enable FF_...
by ESP_igrr
Tue Sep 01, 2020 12:21 am
Forum: General Discussion
Topic: Problem with deep and light sleep
Replies: 3
Views: 376

Re: Problem with deep and light sleep

Thanks for noticing boarchuz! Have edited my post.
by ESP_igrr
Mon Aug 31, 2020 1:43 pm
Forum: General Discussion
Topic: Problem with deep and light sleep
Replies: 3
Views: 376

Re: Problem with deep and light sleep

Hi gianmarco_scar, What is the current consumption of the board after you call esp_light_sleep_start? Normally in light sleep mode you should be seeing 0.8-1.2 mA, and in deep sleep mode it should be 5-10uA depending on the configured wakeup sources. If you are seeing the current consumption signifi...
by ESP_igrr
Mon Aug 31, 2020 1:36 pm
Forum: General Discussion
Topic: ESP32-WROOM-32(M103QH2800PH3Q0) - 16 MB
Replies: 3
Views: 557

Re: ESP32-WROOM-32(M103QH2800PH3Q0) - 16 MB

Hi gianmarco_scar, With regards to the "flash read err, 1000" error: The error you observe is most likely the one described in ESP32 errata section 3.8: Due to the flash start-up time, a spurious watchdog reset occurs when ESP32 is powered up or wakes up from Deep-sleep. In most cases, this doesn't ...
by ESP_igrr
Fri Aug 28, 2020 12:59 pm
Forum: General Discussion
Topic: esp32 -Jtag Programming
Replies: 5
Views: 572

Re: esp32 -Jtag Programming

Hi kubera, are you able to run esptool.py tool to read flash contents from the chip? It may help determine why programming over JTAG is failing. For instance, try reading back the flash contents, and compare it with the binary file. See if flash is not programmed at all, or there are only some progr...
by ESP_igrr
Fri Aug 28, 2020 12:30 pm
Forum: ESP-IDF
Topic: ESP-IDF Tools Installer issue for ESP-IDF v4.1 release
Replies: 1
Views: 169

Re: ESP-IDF Tools Installer issue for ESP-IDF v4.1 release

Hi mikemoy, sorry about that, we forgot to update the list of released versions which is checked by the installer. Have done this now. Please try again.
by ESP_igrr
Mon Aug 24, 2020 11:14 pm
Forum: General Discussion
Topic: Debug controller reset when including a method in source
Replies: 3
Views: 231

Re: Debug controller reset when including a method in source

Hi mazorsk, could you check what is printed on the UART output when "Debug controller was reset" is printed in the debugger?
by ESP_igrr
Mon Aug 24, 2020 8:13 pm
Forum: General Discussion
Topic: U4WDH are all the Dn Pins used for internal flash?
Replies: 2
Views: 152

Re: U4WDH are all the Dn Pins used for internal flash?

Quoting the ESP32 datasheet: The pin-pin mapping between ESP32-D2WD/ESP32-U4WDH and the embedded flash is as follows: GPIO16 = CS#, GPIO17 = IO1/DO, SD_CMD = IO3/HOLD#, SD_CLK = CLK, SD_DATA_0 = IO2/WP#, SD_DATA_1 = IO0/DI. The pins used for embedded flash are not recommended for other uses. So GPIO...
by ESP_igrr
Mon Aug 24, 2020 8:08 pm
Forum: General Discussion
Topic: JTAG used IOs, how could utilize them when don’t debug?
Replies: 3
Views: 252

Re: JTAG used IOs, how could utilize them when don’t debug?

I think it should be possible to share JTAG TDO pin with an indicator LED, just keep in mind the equivalent RC constant of the LED + series resistor. 15pf typical value for a 0402 LED with a 2kOhm resistor in series works out to 1/RC = 33 MHz. This means it should work with the typical JTAG frequenc...

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