Differences

This shows you the differences between two versions of the page.

--- notes:devs:board [2025/03/12 23:04] – [Seeed Studio's XIAO] azman
+++ notes:devs:board [Unknown date] (current) – removed - external edit (Unknown date) 127.0.0.1
@@ Line 1: / Line 1: @@
-====== Seeed Studio's XIAO ======
-Based on SAMD21 (Cortex-M0)
-//**Note**: Arduino IDE Board Setup (https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json)//
-Pinouts shown below (//Disclaimer: Image copied from some online page.//).
-{{:notes:devs:seeeduino_xiao_samd21_pinout1.jpg?direct&400 |Seeduino XIAO SAMD21 Pinout}}
-====== ESP32 DEVKIT ======
-Espressif's ESP32 - got this board to play around with...
-<file text esp32_devkit1.txt>
---------------
-ESP32-DEVKITV1
---------------
-- clone of DOIT's ESP32 DEVKIT V1?
-- ESP-WROOM-32 (ESP32-D0WDQ6)
-  = ESP32-D0WD-based modules with integrated flash
-- DECISION20200822:
-  = toolchain and build environment is simply not worth it!
-  = WILL USE micropython instead!
------------
-micropython
------------
-- get some tools
-  > pip install esptool rshell
-- download binary from https://micropython.org/download/esp32/
-  = selected esp32-idf3-20191220-v1.12.bin
-  = idf4 seems to be missing LAN? stick with idf3 for now...
-- erase flash
-  > esptool.py --chip esp32 --port /dev/ttyUSB0 erase_flash
-- flash micropython
-  > esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 <bin>
-- use rshell to manage code (vfs)
-  > rshell --port /dev/ttyUSB0 --buffer-size=32
-- download file in rshell
-  > cp <file> /pyboard[/<more_path>]
-----------
-board info
-----------
-esp32 doit devkit v1
-vid = 0x10c4
-pid = 0xea60
-sn = 0001
-esp32 doit devkit v1 (aliexpress - usb type c)
-vid = 0x1a86
-pid = 0x7523
-sn = (null)
-</file>
-Decided to use [[https://micropython.org/|micropython]]. Pinouts shown below (//Disclaimer: Image copied from [[https://randomnerdtutorials.com/|RandomNerdTutorials]]//).
-{{:notes:testing:esp32_devkitv1_pinout_30.png?direct&600|ESP32 DEVKIT1 Pinout}}
-(//Disclaimer: Sorry, I can't remember where I got the following two from...//).
-{{:notes:testing:esp32_devkitv1_pinout_30.jpg?direct&600|ESP32 DEVKIT1 Pinout (30-pins)}}
-{{:notes:testing:esp32_devkitv1_pinout_36.jpg?direct&600|ESP32 DEVKIT1 Pinout (36-pins)}}
-Below is a simple python script to test SSD1306 OLED display which makes use of [[https://github.com/micropython/micropython/blob/master/drivers/display/ssd1306.py|this]] micropython library code.
-<file python test.py>
-from machine import Pin, I2C
-from ssd1306 import SSD1306_I2C
-from time import sleep
-def run_this():
-  i2c = I2C(-1, scl=Pin(22), sda=Pin(21))
-  oled_width = 128
-  oled_height = 64
-  oled = SSD1306_I2C(oled_width, oled_height, i2c)
-  oled.text('Hello, World 1!', 0, 0)
-  oled.text('Hello, World 2!', 0, 10)
-  oled.text('Hello, World 3!', 0, 20)
-  oled.show()
-</file>
-Using Arduino IDE:
-  * select ''Preferences>Additional Board Manager URLs''
-  * enter ''%%https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json.%%''
-  * open ''Boards Manager'' and install esp32 (search for it)
-  * when selecting board for upload, select ''DOIT ESP32 DEVKIT V1''
-Note: esp32 flash tool requires python serial module (e.g. ''pip install pyserial'')
-====== ESP01S WiFi Module ======
-Actually has an esp8266 controller (can be a standalone... e.g. NodeMCU). I primarily use this as WiFi module for 8051 systems.
-<file text esp01s_info.txt>
-Upgraded ESP-01S ESP8266 Serial WIFI Wireless Module Wireless Transceiver
-- ESP01S ESP8266-01S (stronger antenna signal compared to esp01)
-- 1MB flash (from 512M)
-- Integrated WEP, TKIP, AES, and WAPI engines. 802.11 b/g/n
-- Wake up and transmit packets in 2ms
-- standby power consumption of 1.0mW (DTIM3)
-Feature:
-- Power down leakage current <10uA
-- Integrated low power 32-bit CPU could be used as application processor
-------
-|ANT.|
-|    |
-|    |
-|8765|
-|1234|
-------
-|tx|
-|ch_pd|1-enable
-|rst|0-reset
-|vcc|3.3v
-|rx|
-|gpio0|0-flash mode (def), 1-uart mode (prog)
-|gpio2|gpio
-|gnd|
-</file>