Search found 30 matches

by jmattsson
Tue Jan 03, 2017 2:14 am
Forum: General Discussion
Topic: Minimum supply voltage?
Replies: 1
Views: 282

Re: Minimum supply voltage?

Anyone? Bueller?
by jmattsson
Wed Dec 21, 2016 5:56 am
Forum: General Discussion
Topic: Minimum supply voltage?
Replies: 1
Views: 282

Minimum supply voltage?

We would like to run ESP32 modules on a 2.4-2.7V supply. The ESP32 data sheet's pin list mentions that the chip itself can work down to 2.3V, the Espressif website claims 2.2V in the chip overview, and a post by John Lee here earlier suggested it was actually down to 2.0V. However, the data sheet's ...
by jmattsson
Tue Dec 06, 2016 2:56 am
Forum: ESP32 SDK
Topic: Cannot Start Task in ISR
Replies: 6
Views: 555

Re: Cannot Start Task in ISR

Nope, no need from my direction. It was a point of curiosity since our (NodeMCU) event post function most certainly is used from ISRs (and uses the ...FromISR() versions).
by jmattsson
Tue Dec 06, 2016 12:04 am
Forum: ESP32 SDK
Topic: Cannot Start Task in ISR
Replies: 6
Views: 555

Re: Cannot Start Task in ISR

@ESP_Sprite On that note, I saw that the default implementation of esp_event_send() uses xQueueSendToBack() rather than xQueueSendToBackFromISR(). Does that imply that esp_event_send() should never be called from an ISR, or are the queues safe regardless?
by jmattsson
Mon Dec 05, 2016 4:16 am
Forum: News
Topic: ESP-IDF 1.0 Release plan
Replies: 60
Views: 12180

Re: ESP-IDF 1.0 Release plan

<3
by jmattsson
Mon Dec 05, 2016 1:50 am
Forum: News
Topic: ESP-IDF 1.0 Release plan
Replies: 60
Views: 12180

Re: ESP-IDF 1.0 Release plan

@ESP_iggr Regarding the interrupt allocation, I would much prefer to have you get that into master sooner rather than later, regardless of whether it's 1.0 compatible. My alternative is pretty much rolling my own and ignoring whatever you might actually provide later, because by then it'll be too mu...
by jmattsson
Fri Nov 18, 2016 12:56 am
Forum: Report Bugs
Topic: [solved] ets_printf ("\n"); printf("\n"); ets_printf("\r"); printf("\r");
Replies: 2
Views: 521

Re: ets_printf ("\n"); printf("\n"); ets_printf("\r"); printf("\r");

You'll want to use regular printf, not ets_printf, and:

Code: Select all

make menuconfig
...
Component config -> ESP32-specific config ->  Standard-out output adds carriage return before newline
by jmattsson
Wed Oct 05, 2016 3:42 am
Forum: ESP32 SDK
Topic: [Solved] Reading character input from the serial port
Replies: 8
Views: 1192

Re: [Solved] Reading character input from the serial port

Whoops... indeed that was for debugging. Thanks for pointing it out - I had it on my todo list to work out why Esplorer wasn't happy loading the file list but now I know :)
by jmattsson
Wed Oct 05, 2016 2:35 am
Forum: ESP32 SDK
Topic: [Answered] Assembler language reference manual ...
Replies: 12
Views: 3239

Re: Assembler language reference manual ...

Not quite what you asked for, but you can find the overall Xtensa Instruction Set Architecture (ISA) Reference Manual document e.g. here . It's not specific to the 108s that you'll find in the ESP32, but between the ISA doc and the components/esp32/include/xtensa/config/core-isa.h header you can pre...
by jmattsson
Wed Oct 05, 2016 2:23 am
Forum: ESP32 SDK
Topic: [Solved] Reading character input from the serial port
Replies: 8
Views: 1192

Re: [Solved] Reading character input from the serial port

As WiFive already mentioned (and linked to), in NodeMCU I've got the UART hooked up to stdio for input. It was surprisingly easy to do.