Arduino Core for STM32L0 based boards

What is it ?

ArduinoCore-stm32l0 is targeted at ultra low power scenarios, sensor hubs, with LoRaWAN connectivity.

This repository is here to add to original one CH2i custom boards

Supported boards

Tlera Corp (by original repo)

• Grasshopper-L082CZ
• Cricket-L082CZ
• Cicada-L082CZ

STMicroelectronics (by original repo)

• B-L072Z-LRWAN1
• P-NUCLEO-LRWAN1
• NUCLEO-L053R8
• NUCLEO-L073RZ

CH2i

• CH2i various boards on Murata L082CZ chip

CH2i boards are based on Tlera Corp Gnat boards but we added some features such as:

• RGB LED pins defined with LED_RED, LED_GRN, LED_BLU
• DS18B20 GPIO definition defined ONEWIREPWR (Pin to power DS18B20, usually pin connected to VDD of the DS18B20), ONEWIREBUS (DS_DQ with 4K7 pullup)
• Battery Reading defined by BAT_ENABLE (Pin to enable battery reading), BAT_ANALOG (pin to read analog value)

When selected board you can select type by a new submenu called Board Type, and the following symbol will also be defined

• V1.0 BOARD_V10
• V1.0a BOARD_V10a
• ED V1.0 BOARD_ED_V10

You can see these boards pinout definition in the file variant.h

Boards can be identified at compilation by the defined symbol ARDUINO_STM32L0_CH2I_MURATA and version with also the following symbols

#if defined (ARDUINO_STM32L0_CH2I_MURATA)
	#if defined (BOARD_V10) 
	// Code
	#elif defined (BOARD_V10a)
	// Code
	#elif defined (BOARD_ED_V10)
	// Code
	#endif
#endif

CH2i private board called Sentinel that is based on Tlera Corp but we added some features such as:

• RGB LED dedicated IC chip controller by I2C
• GPS UBLOX M8Q
• Magnetometer LIS2MDL
• Accelerometer BM400
• SPI Flash allowing DOSFS
• Quectel modem M66
• Solar harvesting dedicated chip
• Battery Reading defined by BAT_ENABLE (Pin to enable battery reading), BAT_ANALOG (pin to read analog value)

When selected board CH2i Sentinel L082CZ

You can see these boards pinout definition in the file variant.h

Boards can be identified at compilation by the defined symbol ARDUINO_STM32L0_CH2I_MURATA and version with also the following symbols

#if defined (ARDUINO_STM32L0_CH2I_MURATA)
	#if defined (BOARD_SENTINEL_V10) 
	// Code
	#endif
#endif

Installing

Install original repository

Follow installation for original repository

Add CH2i Boards

Please to this step each time you update Tlera Corp Board from Arduino Board Manager

Donwload ZIP file from this repo folder using Clone or Download button then select Download ZIP and decompress the folder.

1. Locate were the original repository was stored by Arduino Board Manager

• OS X: ~/Library/Arduino15/packages/TleraCorp/hardware/stm32l0/0.0.10 (see below)
• Linux: ~/.arduino15/packages/TleraCorp/hardware/stm32l0/0.0.10
• Windows: ~/AppData/Local/Arduino15/packages/TleraCorp/hardware/stm32l0/0.0.10

2. Extract the ZIP file content (ArduinoCore-stm32l0-master) into the hardware/stm32l0/0.0.10/ folder overwriting all files when asked

OS X copying whole folder on existing folder with finder will erase original folder contents so you need to go on each archive folder and copy files into destination folder, this will add new files, replace other but not delete existing ones.

Or you can use the following terminal command assuming you exracted zip file into your Download folder

ditto -V Downloads/ArduinoCore-stm32l0-master/ ~/Library/Arduino15/packages/TleraCorp/hardware/stm32l0/0.0.10/

3. Restart the Arduino IDE

Recovering from a faulty sketch for Boards

Sometimes a faulty sketch can render the normal USB Serial based integration into the Arduindo IDE not working. In this case plugin the STM32L0 board and toggle the RESET button while holding down the BOOT button and program a known to be working sketch to go ack to a working USB Serial setup.

Credits

This fork is based GrumpyOldPizza Arduino STM32L0 This core is based on and compatible with the Arduino SAMD Core