Search found 14 matches

by Hackswell
Wed Jan 18, 2023 7:19 pm
Forum: General Discussion
Topic: if float > float, , What precision does "If" have
Replies: 1
Views: 1157

Re: if float > float, , What precision does "If" have

IEEE floats don't have "decimal" precision. It depends on the size of the mantissa, and other technical things. What you should do is determine the range of typical values and the allowable tolerance, and do something more along the line of: if ( abs(x-y) < max_error_tolerable ) { ... } // equiv to ...
by Hackswell
Fri Jan 06, 2023 6:25 pm
Forum: General Discussion
Topic: ESP32-P4 RISC-V dual core 400 MHz in the news
Replies: 15
Views: 114053

Re: ESP32-P4 RISC-V dual core 400 MHz in the news

Does anyone know if more details about the RISC-V cores have been released? Which extensions will each type have? I know that single-precision float is included in the main cores, but I'm curious as to the full set of extensions planned for each core type.
by Hackswell
Fri Jun 10, 2022 2:09 pm
Forum: General Discussion
Topic: No RF transmission
Replies: 1
Views: 1296

Re: No RF transmission

Is there an eFuse for permanently disabling the transmitter/receiver? In some VERY secure applications, must be 100% certain that the ESP32 cannot transmit nor receive.
by Hackswell
Mon Apr 11, 2022 6:22 pm
Forum: ESP-IDF
Topic: ESP32C3 Eco4 details ?
Replies: 3
Views: 2580

Re: ESP32C3 Eco4 details ?

In English, to me it reads:
"We didn't change any functionality. We just rearranged some stuff to get a better yield on the fab process."

Could be re-routed parts of the CPU/peripherals, redundancy, smaller lithography. Who knows.
by Hackswell
Mon Feb 28, 2022 2:53 pm
Forum: ESP-IDF
Topic: source code for esp_wifi_scan_start()
Replies: 3
Views: 2525

Re: source code for esp_wifi_scan_start()

From reading on the forums for a while, I believe that all WIFI/BT code is closed-source and proprietary. To us, we'll never see more than the header files.
by Hackswell
Mon Dec 27, 2021 4:49 pm
Forum: ESP32 Arduino
Topic: LilyGO TTGO T8 EPS32-S2
Replies: 1
Views: 5497

Re: LilyGO TTGO T8 EPS32-S2

The ESP32 is a different CPU than the ESP32-S3 (or ESP32-S3 or ESP32-C series). Those should be available as boards in a recent version of ESP32 module in arduino IDE. Which version of Arduino, and which version of the ESP32 module do you have installed?
by Hackswell
Mon Dec 27, 2021 4:47 pm
Forum: ESP32 Arduino
Topic: Which board should I select for ESP32-WROOM-32E?
Replies: 3
Views: 6228

Re: Which board should I select for ESP32-WROOM-32E?

It's definitely not the "WROVER" module; that's another chip. I believe that the "ESP32 Dev Module" is what you want to select.
by Hackswell
Tue Dec 14, 2021 3:23 pm
Forum: General Discussion
Topic: Jaguar: Live reloading for the ESP32
Replies: 12
Views: 19366

Re: Jaguar: A fast way to develop for the ESP32

Just shipped a new version (v0.0.5) of Jaguar that gives flashed device a unique id - and a catchy name - so they are easy to find later. % jag scan Choose what Jaguar device you want to use: ▸ elegant-disease (address: http://0.0.0.0:49458, 64-bit) local-bank (address: http://192.168.86.26:9000, 3...
by Hackswell
Mon Dec 13, 2021 4:32 pm
Forum: General Discussion
Topic: Esp32-c3 power consumption?
Replies: 5
Views: 9439

Re: Esp32-c3 power consumption?

https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf Section 4.6 should have the information you need. I think, however, these measurements are for the ESP32-C3 "chip", and not the values used by a "devkit". The standard devkits used the 1117 LDO power regulator whi...
by Hackswell
Mon Nov 01, 2021 5:03 pm
Forum: Hardware
Topic: ESP32 not recognized on Arduino IDE UBUNTU 32bits 18.06LTS
Replies: 1
Views: 2499

Re: ESP32 not recognized on Arduino IDE UBUNTU 32bits 18.06LTS

Did you add the udev rules for the ESP32. While technically not necessary, they really help with USB/serial connections.

https://www.esp32.com/viewtopic.php?t=2480#p13666