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by ESP_Sprite
Fri Apr 26, 2019 3:00 am
Forum: General Discussion
Topic: esp32 idf errosrs while compiling the opc-ua files
Replies: 5
Views: 63

Re: esp32 idf errosrs while compiling the opc-ua files

Can you tell us which version of esp-idf and opc-ua and what compiler you use?
by ESP_Sprite
Fri Apr 26, 2019 2:58 am
Forum: General Discussion
Topic: SPI receive in SPI master, byte shifting in the buffer
Replies: 0
Views: 32

Re: SPI receive in SPI master, byte shifting in the buffer

Can I ask why you do your CS in software, instead of using the hardware CS?
by ESP_Sprite
Thu Apr 25, 2019 2:06 am
Forum: ESP32 IDF
Topic: Faster, optimized ESP-IDF fork + PSRAM Issues
Replies: 11
Views: 1422

Re: Faster, optimized ESP-IDF fork + PSRAM Issues

FWIW, we've been trying some workarounds and I'm pretty sure we can find a set of rules to make these problems go away, but the devs responsible (mostly me) have been doing other high-prio things as well. I'm hoping I can find time to finally finish this in the next few weeks.
by ESP_Sprite
Thu Apr 25, 2019 2:00 am
Forum: Documentation
Topic: Documentation Requests/Feedback
Replies: 54
Views: 36343

Re: Documentation Requests/Feedback

FWIW, the image files normally are generated with esptool.py; perhaps you can use/modify that for your use case. It also has the documentation for the image format: https://github.com/espressif/esptool/wi ... age-Format
by ESP_Sprite
Thu Apr 25, 2019 1:56 am
Forum: General Discussion
Topic: 40 kHz GPIO interrupt
Replies: 3
Views: 197

Re: 40 kHz GPIO interrupt

Is there any chance you could e.g. use the I2S or SPI peripheral to do this? In general, the ESP32 is geared to have a bunch of peripherals that should cover most/all use cases that you'd normally use bitbanging for. Can you show what the protocol looks like?
by ESP_Sprite
Wed Apr 24, 2019 7:21 am
Forum: ESP32 IDF
Topic: How to modify CONFIG_FREERTOS_HZ definition?
Replies: 3
Views: 97

Re: How to modify CONFIG_FREERTOS_HZ definition?

Make menuconfig -> component config -> FreeRTOS -> Tick rate (hz)

Edit: Hi Angus! *wave*
by ESP_Sprite
Wed Apr 24, 2019 5:18 am
Forum: ESP32 IDF
Topic: Task management - Keeping a led on constantly
Replies: 1
Views: 33

Re: Task management - Keeping a led on constantly

You are aware that a GPIO normally keeps its state, as in the normal behaviour is that it stays on once you've set it to be on?
by ESP_Sprite
Wed Apr 24, 2019 5:06 am
Forum: Hardware
Topic: PSRAM WROVER-KIT_V3
Replies: 4
Views: 258

Re: PSRAM WROVER-KIT_V3

That's possibly because the ESP32 employs a cache for flash and PSRAM; you're reading data from the cache instead of from psram. I'd suggest you to call esp_spiram_writeback_cache() before going to light sleep to flush data to psram, and call it again after waking up again to make sure any data from...
by ESP_Sprite
Wed Apr 24, 2019 5:00 am
Forum: Hardware
Topic: Power Consumption in Deep Sleep
Replies: 4
Views: 198

Re: Power Consumption in Deep Sleep

You possibly also want to replace the LDO, the default one is most likely an AMS1117, which is cheap and cheerful but has a somewhat high quiescent power use.
by ESP_Sprite
Tue Apr 23, 2019 3:43 am
Forum: ESP32 IDF
Topic: CPP: Invalid convertions and sorry-unimplemented's error while translating it from C
Replies: 3
Views: 105

Re: CPP: Invalid convertions and sorry-unimplemented's error while translating it from C

There's not one problem here, there are a fair few. C and C++ are languages that are somewhat similar but do have their differences, and you're running into that. Either keep the code in C and link separate C++ code against it, or make sure all code complies to C++-standards.

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