Search found 29 matches

by hydrabus
Fri Oct 13, 2017 5:47 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 468
Views: 1082965

Re: What would you like to see in The Next Chip?

Something amazing for a high end high performance version of a future ESP32 v2 will be mainly
To support natively eMCP to have both Mobile DRAM(LPDDR2 or LPDDR3) + eMMC Flash directly on top of the die (to be soldered ...) like that on bottom of the die we will have x GPIO/Peripherals ... so it will ...
by hydrabus
Mon Sep 25, 2017 8:37 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 468
Views: 1082965

Re: What would you like to see in The Next Chip?

Hardware & software protections against (mainly during the secure boot computations/checks...):
Clock Glitch Attacks
Power Glitch Attacks
SCA (Side Channel Attacks)
FA (Fault Attacks)
DFA (Differential Fault Analysis)
More details here: https://www.ssi.gouv.fr/uploads/IMG/pdf/DFSCA.pdf
Of ...
by hydrabus
Sun Jul 02, 2017 3:19 pm
Forum: Hardware
Topic: Which ESP32 module would you recommend for power measurement?
Replies: 2
Views: 7648

Re: Which ESP32 module would you recommend for power measurement?

I would recommend HydraESP32v1.1 Rev1.0 (with ESP-WROOM-32) see link here https://hydrabus.com/2016/11/16/hydraesp32-with-esp-32s-v1_1_rev1-is-alive/


It is heavily recommended to solder also the big GND (on center) of the ESP-WROOM-32 for heat dissipation in case you use everything Wifi+BLE ...
by hydrabus
Wed Nov 16, 2016 7:42 pm
Forum: Hardware
Topic: HydraBus Shield / Breakout board for ESP-WROOM-32 new version 1.1(rev1.0)
Replies: 1
Views: 8352

Re: HydraBus Shield / Breakout board for ESP-WROOM-32 new version 1.1(rev1.0)

HydraESP32 HydraBus v1.0 Shield for ESP-WROOM-32 V1.1 Rev1.0 is alive
https://hydrabus.com/wp-content/uploads/2016/11/HydraBus__Shield_ESP_WROOM_32_v1_1_Rev1_ESP-32S_final.jpg
This new version allow to measure ESP32 power consumption (and/or manage power ON/OFF of ESP32 with any MCU…)
This version ...
by hydrabus
Mon Oct 31, 2016 11:23 pm
Forum: ESP-IDF
Topic: lwip http server, can't read from socket
Replies: 11
Views: 26014

Re: lwip http server, can't read from socket

Neil,
we have an automated test suite which has two parts:

Compilation tests, build system tests, and a few unit tests which can run on the PC. Run for every commit, takes ~5 minutes to run.
Integration tests which involve real esp32 devices connected to a PC. Run for each commit on master ...
by hydrabus
Sat Oct 29, 2016 9:34 am
Forum: ESP-IDF
Topic: How to debug ESP32 with JTAG / OpenOCD / GDB 1st part connect the hardware
Replies: 1
Views: 15276

How to debug ESP32 with JTAG / OpenOCD / GDB 1st part connect the hardware

This 1st part is mainly how to connect FTDI C232HM DDHSL-0 to ESP32 DevKitC (also called ESP32-CoreBoard V2)

https://hydrabus.com/wp-content/uploads/2016/10/esp32-devkitc_with_FTDI_C232HM_DDHSL-0_JTAG_Debug.jpg

For more details on JTAG /GDB /ESP32 OpenOCD see https://github.com/espressif/esp ...
by hydrabus
Wed Oct 26, 2016 12:11 pm
Forum: Hardware
Topic: HydraBus Shield / Breakout board for ESP-WROOM-32 new version 1.1(rev1.0)
Replies: 1
Views: 8352

HydraBus Shield / Breakout board for ESP-WROOM-32 new version 1.1(rev1.0)

This shield can be used with or without HydraBus board, you can even cut HydraBus specific right side (on the line) to have a tiny ESP-WROOM-32 breakout board.

https://644db4de3505c40a0444-327723bce298e3ff5813fb42baeefbaa.ssl.cf1.rackcdn.com/55026ca8fe2840843aafa3db5696e0f5.png https ...
by hydrabus
Mon Oct 24, 2016 10:09 pm
Forum: ESP-IDF
Topic: [Answered] How to build a subset of the possible components in ESP-IDF?
Replies: 24
Views: 47380

Re: How to build a subset of the possible components in ESP-IDF?

Yes such feature will be great to speed up build time.

It will be very interesting to also check other compiler option a bit like on ARM CortexMx with GCC 4.8 or more with LTO option (-flto) which heavily reduce final bin/elf size (elimination of unused functions) and also optimize speed.
As for ...
by hydrabus
Mon Oct 24, 2016 9:08 pm
Forum: ESP-IDF
Topic: [Answered] Assembler language reference manual ...
Replies: 17
Views: 69985

Re: Assembler language reference manual ...

Could you share your plugin ?
My email is bvernoux at hydrabus.com
I've sent you an email.
Thanks for all I have replied to your Email
by hydrabus
Sat Oct 22, 2016 8:57 pm
Forum: ESP-IDF
Topic: [Answered] Assembler language reference manual ...
Replies: 17
Views: 69985

Re: Assembler language reference manual ...


1) A way to Count Leading Zeros of a 32bits unsigned integer
Does such feature exist on ESP32 CPU ?


Yes, using NSAU instruction. Compiler will generate it if you use GCC __builtin_clz() intrinsic.

Thanks for the hint and the fact it support asm instruction for that I will test it later to ...

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