Search found 3472 matches

by ESP_Sprite
Mon Jun 05, 2017 1:22 am
Forum: Hardware
Topic: [Answered] WROVER and USB ports on Ubuntu
Replies: 1
Views: 1779

Re: WROVER and USB ports on Ubuntu

Yes, more or less. From memory, the FT2232H only supports JTAG on the first channel, and we haven't been able to configure the FT2232 in such a way that it hides that first port from the serial driver and still works on all OSses without trying to impersonate another device.
by ESP_Sprite
Mon Jun 05, 2017 1:19 am
Forum: General Discussion
Topic: LoadProhibited on core 0 when concatenating with sprintf
Replies: 2
Views: 2057

Re: LoadProhibited on core 0 when concatenating with sprintf

Not entirely sure what's going wrong, but inet_ntoa returns a pointer to some (internally-allocated or static) variable; this is either incompatible with multithreading or the pointer is only valid in the thread you use inet_ntoa in. Suggest creating your own buffer space and using inet_ntop instead.
by ESP_Sprite
Mon Jun 05, 2017 1:12 am
Forum: General Discussion
Topic: Can the output current of the esp32 GPIO be reduced?
Replies: 20
Views: 14856

Re: Can the output current of the esp32 GPIO be reduced?

Yep. If I didn't find this out at the start of the weekend,the 80mA value would already be gone by now.
by ESP_Sprite
Sun Jun 04, 2017 3:08 pm
Forum: ESP32 IDF
Topic: ESP32 PSRAM support
Replies: 106
Views: 65597

Re: ESP32 PSRAM support

Huh, you're right - seems I skipped over pin 7. Thanks for noticing, will fix it as soon as I have time. Same with the code/documentation discrepancy - those should match up, will see which one is wrong. I can't easily check the code now, but my guess is that WP and HOLD aren't mentioned anywhere in...
by ESP_Sprite
Sun Jun 04, 2017 7:36 am
Forum: Report Bugs
Topic: Wrover Kit / Modul Shematic led out 17,16 - SILK and Modul it self not
Replies: 1
Views: 1664

Re: Wrover Kit / Modul Shematic led out 17,16 - SILK and Modul it self not

The schematic is like that because the footprint can accomodate both ESP-WROVERs as well as ESP-WROOM modules. On an ESP-WROOM, GPIO16 and 17 are available, hence the fact that there's stuff connected to it.
by ESP_Sprite
Sun Jun 04, 2017 7:33 am
Forum: Report Bugs
Topic: CS(CE) and CLK(SCLK) Pins now swapped! GPIO16 and GPIO17 in PSRAM
Replies: 1
Views: 2099

Re: CS(CE) and CLK(SCLK) Pins now swapped! GPIO16 and GPIO17 in PSRAM

As I said in the other topic: please do not take off the cuff sentences like "pin a and b are used as funca and funcb" as a hard 1-to-1 mapping; they are just illustrative to indicate e.g.they're not to be used for other purposes. If we did mean an 1-to-1 mapping, we've used the word 'respectively'....
by ESP_Sprite
Sun Jun 04, 2017 7:28 am
Forum: ESP32 IDF
Topic: ESP32 PSRAM support
Replies: 106
Views: 65597

Re: ESP32 PSRAM support

Please refer to the actual documentation of the specific pinouts, like the relevant documentation of external RAM in esp-idf or the psram code itself, for the pinouts. Sentences like 'GPIO17 and GPIO16 are used as CS and CLK' are only meant to illustrate that these two pins are in use, they are not ...
by ESP_Sprite
Sat Jun 03, 2017 12:21 pm
Forum: ESP32 IDF
Topic: ESP32 PSRAM support
Replies: 106
Views: 65597

Re: ESP32 PSRAM support

For what it's worth - while we don't have a timeline for it, we also have the idea to add non-flash-cache-based psram access to esp-idf. This would mean that you can fetch data from the psram or write data to psram using a function call, but you cannot directly allocate memory pointers in it or stor...
by ESP_Sprite
Sat Jun 03, 2017 3:30 am
Forum: ESP32 IDF
Topic: ESP32 PSRAM support
Replies: 106
Views: 65597

Re: ESP32 PSRAM support

CLK and CS are GPIO16 and 17, which as far as I can see (http://www.espressif.com/sites/default/ ... ist_en.pdf page 5) are in the VSDIO domain.
by ESP_Sprite
Sat Jun 03, 2017 12:58 am
Forum: ESP32 IDF
Topic: ESP32 PSRAM support
Replies: 106
Views: 65597

Re: ESP32 PSRAM support

Unfortunately, the compiler can't see with 100% certainty which routines access PSRAM and which don't at compile time, so normally the workaround is enabled globally. If you use PSRAM in such a way that its use is limited to a subset of your program, you can use the workaround flag on only those C-f...

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