Search found 14 matches
- Wed Jan 18, 2023 7:19 pm
- Forum: General Discussion
- Topic: if float > float, , What precision does "If" have
- Replies: 1
- Views: 1604
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 ...
- 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: 126423
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.
- Fri Jun 10, 2022 2:09 pm
- Forum: General Discussion
- Topic: No RF transmission
- Replies: 1
- Views: 1678
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.
- Mon Apr 11, 2022 6:22 pm
- Forum: ESP-IDF
- Topic: ESP32C3 Eco4 details ?
- Replies: 3
- Views: 3504
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.
- Mon Feb 28, 2022 2:53 pm
- Forum: ESP-IDF
- Topic: source code for esp_wifi_scan_start()
- Replies: 3
- Views: 3473
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.
- Mon Dec 27, 2021 4:49 pm
- Forum: ESP32 Arduino
- Topic: LilyGO TTGO T8 EPS32-S2
- Replies: 1
- Views: 6139
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?
- Mon Dec 27, 2021 4:47 pm
- Forum: ESP32 Arduino
- Topic: Which board should I select for ESP32-WROOM-32E?
- Replies: 3
- Views: 9406
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.
- Tue Dec 14, 2021 3:23 pm
- Forum: General Discussion
- Topic: Jaguar: Live reloading for the ESP32
- Replies: 12
- Views: 22370
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...
- Mon Dec 13, 2021 4:32 pm
- Forum: General Discussion
- Topic: Esp32-c3 power consumption?
- Replies: 5
- Views: 10688
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...
- Mon Nov 01, 2021 5:03 pm
- Forum: Hardware
- Topic: ESP32 not recognized on Arduino IDE UBUNTU 32bits 18.06LTS
- Replies: 1
- Views: 3011
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
https://www.esp32.com/viewtopic.php?t=2480#p13666