Setup
The device can be used with and without micro SD memory. The decision will be taken at reset time by M5NightscoutMon.
- If you reset and insert a micro SD it will use and save the configuration of the SD memory file M5NS.ini.
- If you reset and don't have an SD memory in the device it will use the information saved in its own memory.
This allows you to quickly jump from one configuration to another.
You still can configure manually your SD memory as explained here, but we recommend using the SoftAP feature.
When you first boot the programmed device it will start in SoftAP mode: your M5Stack will behave like if it is a Wi-Fi access point. It will be waiting for you to connect to it (at the web address http://192.168.0.1) with your phone or computer so that you can easily configure it to join your own Wi-Fi (home, work, tethering, ...).
This state will be only necessary for a short time: once it will be connected to your own Wi-Fi, you will be able to access it from any device connected to that same Wi-Fi.
Once programmed (with a recent version), your device will boot-up like this
With your mobile phone (example below Android) or a computer set your Wi-Fi to M5NS.
Use the password provided on the M5Stack (SSID passphrase) screen to connect.
Open a browser to setup the device. Go to the following page: http://192.168.0.1
Note: If you want, you can complete setup now with your phone (but you won't be able to update the firmware) see here.
It is recommended that you setup only your Wi-Fi for now. On the page that opened, scroll down to WiFi Configuration and select edit.
Using the drop down list, select your Wi-Fi and type the security key below, and then OK.
Back to the main menu, save the configuration.
Once saved, reset your device (red button on the left side) and continue below.
If you need to make your device boot in SoftAP, hold the left button pressed, reset with the side red button and keep the left button pressed until the Wi-Fi pairing screen shows-up.
Now that your M5Stack has been configured to connect to your Wi-Fi network, you can connect to it in order to complete or change its configuration (any time, with any device on the same network).
Plug your device or reset it (red button on the side), it should boot-up like this
(If it remains like this you need to fix your Wi-Fi information that's probably wrong: reset with the side red button and keep the left button pressed until the Wi-Fi pairing screen shows-up and go back to SoftAP to check your Wi-Fi credentials).
and display the graphic screen (fully configured or only Wi-Fi configured)
You can now access it through its web server browsing to http://m5ns.local if you're on the same network (i.e. the device you use to browse the M5Stack is on the same Wi-Fi you defined in M5NS.ini) and you didn't customize device_name in M5NS.ini.
If you can't connect with M5NS.local, click the right button until reaching the debug screen and note the IP address.
Browse the address to access the web server (it will look like https://192.168.1.199 but not these numbers).
Your M5Stack_NightscoutMon will display its web page.
Selecting the Edit and Change links allows you to change the values. If you started your M5Stack with an SD memory inside, changes will be saved in both the SD memory card and the device internal memory.
Once set, scroll down and Save your configuration.
Browse down to Application firmware and select click to update.
Wait for completion.
Your device will reboot with the latest version.
Browse to the following page. Internal memory settings will be cleared.