https://github.com/geomatsi/nodemcu-tests
Simple NodeMCU examples: nRF24 Lua library, WiFi, MQTT, WebSocket, ...
https://github.com/geomatsi/nodemcu-tests
lua nodemcu nrf24l01
Last synced: about 1 year ago
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Simple NodeMCU examples: nRF24 Lua library, WiFi, MQTT, WebSocket, ...
- Host: GitHub
- URL: https://github.com/geomatsi/nodemcu-tests
- Owner: geomatsi
- Created: 2017-07-02T16:01:28.000Z (almost 9 years ago)
- Default Branch: master
- Last Pushed: 2020-07-28T21:45:40.000Z (almost 6 years ago)
- Last Synced: 2025-02-06T04:14:23.638Z (over 1 year ago)
- Topics: lua, nodemcu, nrf24l01
- Language: Lua
- Homepage:
- Size: 94.7 KB
- Stars: 1
- Watchers: 4
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Notes
These notes should work for both [WeMos Mini](https://wiki.wemos.cc/products:d1:d1_mini) boards
as well as for the following simple ESP12F circuitry suitable even for breadboard:
__However__ in the case of WeMos board there is no need to manually change RESET and GPIO0 levels and to use *before* and *after* parameters in *esptool*.
All the switching between running mode and programming mode will be done done using DTR/RTS of integrated USB-to-Serial chip.
## Using Minicom with original AI Thinker firmware
* Switch the board to running mode: set high level on GPIO0 pin
* Connect Minicom to device serial port with 115200 8N1 settings
* Enable carriage return using *CTRL-A U* control sequence
* Reset device: toggle low level on RST pin
```bash
Ai-Thinker Technology Co. Ltd.
ready
```
* Run AT commands pressing *Enter* and then *CTRL-J* after each command:
```bash
AT
OK
AT+GMR
AT version:0.60.0.0(Jan 29 2016 15:10:17)
SDK version:1.5.2(7eee54f4)
Ai-Thinker Technology Co. Ltd.
May 5 2016 17:30:30
OK
```
## Check device settings in programming mode
* Switch the board to programming mode: set low level on GPIO0 pin
* Reset the board: toggle low level on RST pin
* Run *esptool* to get chip parameters: reset chip between each command
```bash
$ sudo esptool.py --port /dev/ttyUSB0 --before no_reset_no_sync --after no_reset chip_id
esptool.py v2.6
Serial port /dev/ttyUSB0
Connecting...
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 60:01:94:02:a9:f9
Uploading stub...
Running stub...
Stub running...
Chip ID: 0x0002a9f9
Staying in bootloader.
```
```bash
$ sudo esptool.py --port /dev/ttyUSB0 --before no_reset_no_sync --after no_reset read_mac
esptool.py v2.6
Serial port /dev/ttyUSB0
Connecting...
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 60:01:94:02:a9:f9
Uploading stub...
Running stub...
Stub running...
MAC: 60:01:94:02:a9:f9
Staying in bootloader.
```
## Brief NodeMCU HOWTO
NodeMCU project provides an excellent [documentation](https://nodemcu.readthedocs.io), so no need to go into much details here. In brief, do the following steps to build and flash firmware image to WeMos D1 mini board:
* Get firmware source code
```bash
$ git clone https://github.com/nodemcu/nodemcu-firmware.git
```
* Customize NodeMCU firmware image
Edit _app/include/user_modules.h_
* Build firmware
Build NodeMCU firmware:
```bash
$ make
```
* Flash firmware
Switch device into programming mode and NodeMCU firmware
```bash
$ sudo ./tools/toolchains/esptool.py --port /dev/ttyUSB0 write_flash -fm dio -fs 32m 0x00000 bin/0x00000.bin 0x10000 bin/0x10000.bin
```
### How to copy Lua scripts to device spiffs
Using [luatool](https://github.com/4refr0nt/luatool):
```bash
$ sudo luatool.py --port /dev/ttyUSB0 --src test.lua --dest test.lua -b 115200
```
Using [nodemcu-tool](https://github.com/AndiDittrich/NodeMCU-Tool):
```bash
$ sudo nodemcu-tool upload init.lua
$ sudo nodemcu-tool upload test.lua -n main.lua
```
### How to create and flash spiffs image
Create image content list
```bash
$ cat script.img
import init.lua init.lua
import test.lua test.lua
import nrf24.lua nrf24.lua
```
Generate spiffs image
```bash
$ spiffsimg -f fs.img -S ${FLASH_SIZE} -U ${SPIFFS_SIZE} -r script.img
```
Flash spiffs image to device
```bash
$ sudo /home/matsi/bin/esptool.py --port /dev/ttyUSB0 write_flash -fm dio -fs ${FLASH_SIZE} ${SPIFFS_OFFSET} fs.img
```