Search found 320 matches

by loboris
Mon Sep 10, 2018 9:36 pm
Forum: Other Boards
Topic: [ESP32] New dev board
Replies: 48
Views: 8253

Re: [ESP32] New dev board

It may be difficult (if not impossible without modifing esp-idf sources) to connect external SPIRAM to ESP32-PICO-D4 even it there is enough room on the board.
It uses GPIOs 16&17 for internal Flash and those pins are used by esp-idf to drive the external SPIRAM.
by loboris
Sun Sep 09, 2018 9:46 pm
Forum: Other Boards
Topic: [ESP32] New dev board
Replies: 48
Views: 8253

Re: [ESP32] New dev board

What is it you don't like about the LDO?? AMS1117 used on ESP32-PICO-KIT has quiescent current of 5 (11 max) mA and the board can hardly be used for testing/using low power applications (with ESP32 in deep sleep). There are some other LDOs with much smaller qc (e.g. HT7833 4 uA (7 max), or some swi...
by loboris
Sun Sep 09, 2018 4:53 pm
Forum: Other Boards
Topic: [ESP32] New dev board
Replies: 48
Views: 8253

Re: [ESP32] New dev board

If the board is going to be breadboard-friendly the size is not too important (except for the width, so that more bredboard rows remains free). What's wrong with the existing Espressif's ESP32-PICO-KIT Dev. Board which is 20.3x52 mm, available for 9.7 US$ (8.73 US$ if you register), 8.5 € from Mouse...
by loboris
Fri Sep 07, 2018 4:02 pm
Forum: Other Boards
Topic: PYB Nano V2 mini board
Replies: 12
Views: 3117

Re: PYB Nano V2 mini board

Thanks, that is more interesting.
by loboris
Fri Sep 07, 2018 1:30 pm
Forum: Other Boards
Topic: PYB Nano V2 mini board
Replies: 12
Views: 3117

Re: PYB Nano V2 mini board

shaoziyang wrote:
Wed Sep 05, 2018 3:22 am
PYB Nano V2 is a pocket micropython board, with STM32F411 microcontroller and 8MByte Flash.
It's nice to see you've made your own board.
It would be far more interesting if you give some more information, like schematics, bottom layout, does it have sdcard connector, ...
by loboris
Fri Sep 07, 2018 1:24 pm
Forum: ESP32 boards
Topic: Taking advantage of the second core
Replies: 10
Views: 7448

Re: Taking advantage of the second core

It would be very valuable to be able to run different tasks and/or threads on specific cores. All MicroPython threads runs on the same core as they are using the same MicroPython resources. Many background tasks, including all WiFi/BT tasks, runs on a different core. I'll try to give more details o...
by loboris
Mon Sep 03, 2018 3:18 pm
Forum: ESP32 boards
Topic: changing GPIO36 pins as INPUT or OUTPUT
Replies: 5
Views: 966

Re: changing GPIO36 pins as INPUT or OUTPUT

GPIO 34-39 are input only.
by loboris
Sun Aug 26, 2018 4:21 pm
Forum: ESP32 boards
Topic: Issue with curl
Replies: 3
Views: 1683

Re: Issue with curl

Curl GET was filtering all characters less than 32 (except \r & \n) replacing them with '.'
I'll enable the tab (0x09) character to be passed to the result too. The repository update is planned for tomorrow.
by loboris
Sun Aug 26, 2018 9:28 am
Forum: General Discussion and Questions
Topic: Calculation benchmark of micropython in different hardware
Replies: 14
Views: 2980

Re: Calculation benchmark of micropython in different hardware

Notes on ESP32: If psRAM is used, the results may vary because both Flash and psRAM are cached in internal RAM in 32K blocks. The result may be different depending on if all the used variables are in the in the same 32K block or the new block must be cached from psRAM. It may also vary depending on ...
by loboris
Wed Aug 15, 2018 10:52 am
Forum: Development of MicroPython
Topic: Anyone port to AArch64?
Replies: 8
Views: 1667

Re: Anyone port to AArch64?

jlipham wrote:
Tue Aug 14, 2018 6:27 pm
The thought is that if I'm running it on the bare metal, it'll make a difference as well as run properly under QEMU Raspi3 AArch64 emulation if needed.
Is there any bare metal MicroPython port on ARM (32 or 64 bit) other than this one for RPi Zero.