Search found 413 matches

by ESP_Sprite
Wed Feb 22, 2017 3:09 am
Forum: ESP32 SDK
Topic: Bluetooth classic
Replies: 3
Views: 53

Re: Bluetooth classic

Mostly because it's not ported to main esp-idf yet. We do have some HCI work fleshed out, as well as audio profile already working. I asked around, work to get all that into esp-idf will be starting this week. (It's most likely going to be post-esp-idf-v2.0 before it will make it in, though.)
by ESP_Sprite
Wed Feb 22, 2017 2:22 am
Forum: ESP32 SDK
Topic: Porting ARM Cortex M code
Replies: 3
Views: 97

Re: Porting ARM Cortex M code

You are aware of the fact that you can pass an argument to your interrupt handler when you set it up, right? (The 'void *arg' argument in esp_intr_alloc; the same argument will be fed into the installed interrupt handler.) Maybe you can use that to figure out what interrupt you're called from?
by ESP_Sprite
Wed Feb 22, 2017 1:46 am
Forum: General Discussion
Topic: ESP-WROOM-32: Quad SPI Chip Selects
Replies: 5
Views: 86

Re: ESP-WROOM-32: Quad SPI Chip Selects

The TRM, mostly. The way the SPI registers are built strongly hint at QIO etc being a per-transaction thing you can enable on any CS.
by ESP_Sprite
Tue Feb 21, 2017 2:27 pm
Forum: General Discussion
Topic: ESP-WROOM-32: Quad SPI Chip Selects
Replies: 5
Views: 86

Re: ESP-WROOM-32: Quad SPI Chip Selects

I think that may be misleading. As far as I can see, every device connected to one of the three CS pins of a SPI host can be in single-wire or dual or quad mode.
by ESP_Sprite
Tue Feb 21, 2017 2:27 pm
Forum: ESP32 HDK
Topic: unbrick a devkit?
Replies: 5
Views: 72

Re: unbrick a devkit?

Strange, maybe an USB hickup or a flakey solder joint somewhere. Hope it was a fluke.
by ESP_Sprite
Tue Feb 21, 2017 11:48 am
Forum: Report Bugs
Topic: Falling back to built-in command interpreter ??
Replies: 3
Views: 86

Re: Falling back to built-in command interpreter ??

Also, in case this is an issue in production, it's actually possible to program an efuse to force the ESP32 to use a certain flash voltage and ignore GPIO12.
by ESP_Sprite
Tue Feb 21, 2017 11:47 am
Forum: ESP32 HDK
Topic: Can we add SPI SRAM to our ESP32s?
Replies: 2
Views: 59

Re: Can we add SPI SRAM to our ESP32s?

With the new revision of the silicon, you should be able to do this. Code is very new and the new metal revision still is somewhat untested, but seems to work. We'll be manufacturing ESP-WROVER modules for this, which are similar to the ESP-WROOM32 modules but have an intergrated 4MByte of PSRAM on ...
by ESP_Sprite
Tue Feb 21, 2017 11:41 am
Forum: General Discussion
Topic: SPI speed via GPIO matrix
Replies: 2
Views: 47

Re: SPI speed via GPIO matrix

The maximum SPI clock over GPIO is 40MHz.
by ESP_Sprite
Tue Feb 21, 2017 6:22 am
Forum: ESP32 HDK
Topic: unbrick a devkit?
Replies: 5
Views: 72

Re: unbrick a devkit?

'does not report anything' - you mean that the log is exactly the same before and after plugging in the board? Also, what specific devkit do you have?

If anything, the problem seems to be somewhere in the communication of the USB-serial chip and the PC, but you probably already deduced that yourself.
by ESP_Sprite
Tue Feb 21, 2017 3:15 am
Forum: ESP32 SDK
Topic: Porting ARM Cortex M code
Replies: 3
Views: 97

Re: Porting ARM Cortex M code

Are you using this in the standard esp-idf environment? In esp-idf, you could check the port_interruptNesting[xPortGetCoreID()] variable for non-zero-ness. It's defined in freertos/port.c, but not nicely exported, unfortunately. I'll think of a nicer way to get this information, it can be useful in ...

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