The source includes a few features, that can be turned on or off during compilation.
The feature configuration can be configured by using the CMSIS configuration wizard like this: java -jar CMSIS_Configuration_Wizard.jar src/config/feature_config.h.
To preserve memory, the project should be configured as minimal as possible.
This option sets the amount of memory allocated for input pins.
This option sets the amount of memory allocated for output pins.
Repeated inputs on one input will be ignored if they occur within the debounce timeout.
This feature adds a service to monitor the charging state and voltage of the battery
Adds a binary sensor service that includes only the first input. The format and protocol follows the binary sensor profile.
Adds an Automation IO profile that includes all inputs and outputs. The format and protocol follows the Automation IO profile.
This feature adds the gpioASM service to upload compiled gpioASM. Also, the gpioASM engine/runtime is enabled so that the code can be executed.
Adds a cycling speed and cadence service that reads out the input with index 0.
The service periodically reports the revolution count and last revolution event time.
Experimental feature
This feature, if enabled, puts the chip to sleep mode.
In sleep mode, the chip cannot be connected to.
Any GPIO input wakes up the chip again.
- Light sleep: Clock keeps ticking, ram is retained. Needs a bit of power
- Deep sleep: Clock off, RAM wiped. Chip will be rebooted on wakeup. Needs very little power
Once there is no GPIO input for this amount of minutes, the chip goes to sleep mode according to the configuration above.
Technically, the timeout will most likely not be met exactly.
If set to e.g. 10 minutes, the chip will go to sleep in 10 to 11 minutes.