Search found 31 matches

by jmattsson
Thu Sep 01, 2016 12:37 am
Forum: General Discussion
Topic: 1st Sept has arrived in Hong Kong (6 hours ago)
Replies: 1
Views: 1741

Re: 1st Sept has arrived in Hong Kong (6 hours ago)

Oh, and me me me me me me tooooo! Can't wait to get my hands on a real esp32! :D
by jmattsson
Thu Sep 01, 2016 12:34 am
Forum: General Discussion
Topic: Interest in developer preview?
Replies: 28
Views: 16193

Re: Interest in developer preview?

Thanks for the update! At the moment it feels like the esp8266 and esp32 sdks are diverging rather than converging, and I'm trying to figure out the best way for the NodeMCU project to support both platforms with as little maintenance effort as possible. From a "lazy developer" point of view, I'd lo...
by jmattsson
Wed Aug 31, 2016 8:39 am
Forum: Documentation
Topic: [Documentation Release] ESP32 Technical Reference
Replies: 37
Views: 41870

Re: [Documentation Release] ESP32 Technical Reference

Great start!

Feedback/Qs so far:

How does an external 16 MB flash get mapped into a 11512 KB window?

Typo: WDU => WPD ?
by jmattsson
Wed Aug 31, 2016 6:59 am
Forum: General Discussion
Topic: Interest in developer preview?
Replies: 28
Views: 16193

Re: Interest in developer preview?

Whoa... no kidding that things have changed! :)

This is going to take a while to digest...

@ESP_Sprite: Do you know if the ESP8266 will get a similar IDF (to replace the RTOS-SDK, perhaps)?
by jmattsson
Wed Jul 06, 2016 1:45 am
Forum: General Discussion
Topic: ESP32 is finally real?
Replies: 39
Views: 23245

Re: ESP32 is finally real?

@Sprite_tm: I have a slightly unrelated question for you. Currently many of us use custom boot loaders and over-the-air firmware upgrade methods, typically by mapping either the first or second meg via Cache_Read_Enable() so we can have slot-agnostic firmware. Will the ESP32 have a similar capabilit...
by jmattsson
Wed Jun 29, 2016 1:51 am
Forum: General Discussion
Topic: ESP32 is finally real?
Replies: 39
Views: 23245

Re: ESP32 is finally real?

Let's see... the way multicore processing is handled has changed (AMP -> SMP), the entire memory map has changed, we now have Newlib mostly in ROM (plus some other goodies), the GPIO block is changed wrt how you configure the functions, I2S has gotten a gazillion more functions... those are the thi...
by jmattsson
Tue Jun 28, 2016 1:29 am
Forum: General Discussion
Topic: ESP32 is finally real?
Replies: 39
Views: 23245

Re: ESP32 is finally real?

The ESP32 SDK is SMP through and through and the ESP31s memory map doesn't lend itself nicely to that. Fair enough. I won't spend too much time trying to understand the cache window setup on the ESP31B then! Are there other areas that are likely to substantially change that I'd be better off avoidi...
by jmattsson
Mon Jun 27, 2016 2:06 am
Forum: General Discussion
Topic: ESP32 is finally real?
Replies: 39
Views: 23245

Re: ESP32 is finally real?

We're working on the ESP32 SDK now and due to the changes in memory map and CPU interaction, it's diverged so much from the ESP31 that I don't see a backport happening any time soon. Am I reading this correct in that the next SDK version will not be compatible with the existing ESP31B modules then?...
by jmattsson
Fri Jun 17, 2016 1:13 am
Forum: General Discussion
Topic: Problems with downloading flash
Replies: 5
Views: 5776

Re: Problems with downloading flash

Just to finalise my apparent monologue here: The actual flash chip was defective. Quite possibly because it had been fed 1.8V due to the aforementioned short. After lifting a flash chip from an ESP12 module and using that as a replacement I've finally been able to flash this ESP32. Better documentat...
by jmattsson
Tue Jun 14, 2016 8:58 am
Forum: General Discussion
Topic: Problems with downloading flash
Replies: 5
Views: 5776

Re: Problems with downloading flash

So one of the issues was that this module had a short between pin19 VDDPST and pin18 MTDI. It turns out that if you pull MTDI high during reset, it makes the ESP32 use 1.8V I/O towards the SPI chip (possibly elsewhere too), rather than the regular 3.3V. This explained why the flash chip was never ge...