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by ESP_igrr
Mon May 29, 2017 10:38 pm
Forum: ESP32 SDK
Topic: cannot clone esp-idf.git
Replies: 2
Views: 11

Re: cannot clone esp-idf.git

Please take a look at this msys2 issue, there is a workaround mentioned which you may try.
https://github.com/Alexpux/MSYS2-packages/issues/735
by ESP_igrr
Mon May 29, 2017 10:36 pm
Forum: ESP32 SDK
Topic: Issues with interfacing MicroSD using SPI/1-line
Replies: 1
Views: 6

Re: Issues with interfacing MicroSD using SPI/1-line

The documentation mentions that SDMMC driver doesn't support SPI mode. The flag for SPI mode is reserved for future expansion.
by ESP_igrr
Mon May 29, 2017 1:31 pm
Forum: ESP32 HDK
Topic: VDD_SDIO for ESP32 D2WD
Replies: 14
Views: 547

Re: VDD_SDIO for ESP32 D2WD

One can, for example, connect VDD_SDIO to external 3.3V supply. In this case the internal regulator will be disabled automatically. The only problem with this design is that the flash chip doesn't get automatically powered down before deep sleep, so a shutdown command needs to be sent to it (and the...
by ESP_igrr
Sat May 27, 2017 5:18 pm
Forum: ESP32 HDK
Topic: VDD_SDIO for ESP32 D2WD
Replies: 14
Views: 547

Re: VDD_SDIO for ESP32 D2WD

For D2WD, power all rails except VDD_SDIO at 3.3V. For VDD_SDIO, select 1.8V voltage of the internal regulator by strapping GPIO12. Since VDD_SDIO will be at 1.8V, it must not be connected to the external 3.3V supply.
by ESP_igrr
Sat May 27, 2017 12:29 pm
Forum: ESP32 SDK
Topic: SD Card and Wifi: Write sector and Timeout
Replies: 2
Views: 47

Re: SD Card and Wifi: Write sector and Timeout

There's shouldn't be a limitation related to usage of sdmmc driver from different task, as long as you use it only from one task at a time. Can you post the code to reproduce the issue?
by ESP_igrr
Sat May 27, 2017 9:36 am
Forum: ESP32 SDK
Topic: settings into menuconfig for unit-test-app
Replies: 4
Views: 47

Re: settings into menuconfig for unit-test-app

What do you mean by "i'm not finding any into my idf"? If you are getting some error when running make menuconfig , can you post the error? If you don't want to configure the unit-test-app in a specific way, you can run make defconfig instead, which will select default configuration settin...
by ESP_igrr
Sat May 27, 2017 2:59 am
Forum: General Discussion
Topic: Bootloader woes and SD card pull-ups
Replies: 3
Views: 121

Re: Bootloader woes and SD card pull-ups

Instead of connecting IO2 and IO0, can you drive each of them to low logic level when in download mode? This way both pins will be low (as required by bootloader) but will still be allowed to work independently when not in download mode. Here's a part of the schematic of WROVER-KIT where we have add...
by ESP_igrr
Fri May 26, 2017 1:29 am
Forum: General Discussion
Topic: Programming Jib for ESP32 WROOM Module
Replies: 3
Views: 65

Re: Programming Jib for ESP32 WROOM Module

The one from taobao doesn't have an auto reset circuit (or there's something wrong with it) even though it has the cp2102 on it.
by ESP_igrr
Fri May 26, 2017 12:53 am
Forum: ESP32 SDK
Topic: [Solved] Can RTC IO output state be retained in hibernation mode?
Replies: 2
Views: 67

Re: Can RTC IO output state be retained in hibernation mode?

For RTC IOs you can use rtc_gpio_hold_en function.

For digital IOs there is a RTC_CNTL_DG_PAD_FORCE_HOLD bit which forces all pads to hold their state.
by ESP_igrr
Thu May 25, 2017 2:06 pm
Forum: General Discussion
Topic: Modem sleep mode causes data from camera abnormal?
Replies: 1
Views: 61

Re: Modem sleep mode causes data from camera abnormal?

Don't have a clue why modem sleep affects I2S transfer, but here's what helped me troubleshoot the camera driver in the past. Instead of using a real camera as a data source, use signal generator which will produce known pixel data, every time. Then it is much easier to spot what exactly is wrong wi...

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