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by ESP_Sprite
Thu Nov 07, 2019 4:41 am
Forum: ESP32 Arduino
Topic: Unable to attachinterrupt on core 0
Replies: 2
Views: 242

Re: Unable to attachinterrupt on core 0

Moving ADF -> Arduino.
by ESP_Sprite
Thu Nov 07, 2019 4:34 am
Forum: ESP32 IDF
Topic: Project name in bin file?
Replies: 2
Views: 114

Re: Project name in bin file?

Yes, it should. No idea what makes 'esp-idf' appear there for you... what version of esp-idf are you using, does this also happen in current master?
by ESP_Sprite
Thu Nov 07, 2019 4:23 am
Forum: Hardware
Topic: Erratic behavior of VDD_SDIO when configured to 1.8V
Replies: 3
Views: 322

Re: Erratic behavior of VDD_SDIO when configured to 1.8V

I don't know off the top of my head, but the boost to 1.9V is enabled here, perhaps you can find how to get it back to 1.8V from there. Alternatively, in esp-idf this is configurable in menuconfig and you can add Arduino as a component to esp-idf, so you can also go that route.
by ESP_Sprite
Thu Nov 07, 2019 4:09 am
Forum: General Discussion
Topic: Esp32 wroom only boots up when toggeling EN
Replies: 2
Views: 139

Re: Esp32 wroom only boots up when toggeling EN

Do you have a RC reset network on the /EN pin?
by ESP_Sprite
Thu Nov 07, 2019 4:06 am
Forum: General Discussion
Topic: linker error: DRAM overflow
Replies: 1
Views: 131

Re: linker error: DRAM overflow

This has nothing to do with malloc, as as you said the code behaviour calling that isn't known at linker time. It's usually because you use up too much memory with static variables.
by ESP_Sprite
Fri Nov 01, 2019 10:02 am
Forum: ESP32 IDF
Topic: Problem(assert) with spi_device_transmit()
Replies: 3
Views: 1081

Re: Problem(assert) with spi_device_transmit()

To answer the original question: you would place e.g. a mutex around the call instead of a spinlock.
by ESP_Sprite
Fri Nov 01, 2019 9:56 am
Forum: ESP32 IDF
Topic: Allocate 2 buffers in specific address at different memory banks
Replies: 18
Views: 790

Re: Allocate 2 buffers in specific address at different memory banks

Not easily.... you could either add the banks as reserved regions to the heap allocator somehow and then manually use pointers in there, or mess around with the ld scripts to dump the variables in different regions. Both are hacks. Is there a specific reason you think you need to do this? (Also, is ...
by ESP_Sprite
Fri Nov 01, 2019 9:49 am
Forum: ESP32 IDF
Topic: Panic in uart_rx_intr_handler_default with SPI SD Card (Sparkfun ESP32 Thing)
Replies: 2
Views: 224

Re: Panic in uart_rx_intr_handler_default with SPI SD Card (Sparkfun ESP32 Thing)

Hard to say, but first thought is that you may have a short between the pins that are used for flash and other pins?
by ESP_Sprite
Fri Nov 01, 2019 9:23 am
Forum: Hardware
Topic: Erratic behavior of VDD_SDIO when configured to 1.8V
Replies: 3
Views: 322

Re: Erratic behavior of VDD_SDIO when configured to 1.8V

The 1.7V early on is to be expected: the issue is that the LDO in practice outputs a voltage that is a bit lower than expected and we compensate that as soon as the app boots. (This is configurable in menuconfig if you use esp-idf, by the way.) The sawtooth oscillation is also expected: it's a side ...
by ESP_Sprite
Fri Nov 01, 2019 9:13 am
Forum: General Discussion
Topic: BLE interfering with timer group interruption
Replies: 2
Views: 272

Re: BLE interfering with timer group interruption

Not sure about the BLE behaviour, but in general, it could be a good idea to move your timing-sensitive stuff to a separate core for sure. It also can pay off to look into peripherals; for instance, the RMT peripheral should be able to create a 200mS off / 200uS on signal pretty easily.

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