MicroPython Forum (Archive)

Consider a program, that only initializes the peripherals when it first needs them, based on what the user selects from the user interface. For instance, a weather station that has a temperature sensor, a humidity sensor and a wind speed sensor. The user can select any two measurements to be displa...

For picking the peripheral, the port code should know all available peripherals that can output on the given pins and iterate through them until one is free. On the ESP32 this is super easy, if you initialize an I2C object on pins 3 and 5 you get I2C1. If you do another set of pins you get I2C2. Of...

@tannewt Actually, after a moment of thought, you already have your DigitalIO objects in the current machine API -- they are called Pin. Sure but my original idea I was getting at was to split Pin as direct IO from Pin as a resource for a peripheral. Doesn't it make sense to split the class that do...

What has the experience been with the peripheral ID? I know some ports don't have it and it doesn't seem very portable to me. Seems like it'd be better to let the port's implementation match up a hardware peripheral to the given pins where its a different MCU on a board with a standard form factor ...

First, I agree the duplication between value() and low()/high() is unneeded. Furthermore, why is value a function? Shouldn't it be a property? Its weird to me that a function reads and writes based on its arguments. However, `pin.value = True`, `last_pin_state = pin.value` and `pin.value = not pin....

Some more notes about the current spec: * I wonder if it should be obligatory to set a pin to ALT mode when there is any peripheral (such as I2C, timer, ADC) using it? What about the software (bit-banging) peripherals? Should it be possible to set the pin to the ALT mode explicitly, or should it on...

First, I agree the duplication between value() and low()/high() is unneeded. Furthermore, why is value a function? Shouldn't it be a property? Its weird to me that a function reads and writes based on its arguments. However, `pin.value = True`, `last_pin_state = pin.value` and `pin.value = not pin....

How big is your ROM? Most ports place a filesystem in ROM if theres enough space. It doesn't need external flash necessarily.

Take a look at mp_keyboard_interrupt it interrupts python code from a C interrupt.

Following from http://forum.micropython.org/viewtopic.php?f=3&t=2545, here we can discuss machine.I2C. This is really critical to get right, and make sure all ports implement it correctly, because it forms the basis of many drivers (eg LCD, env sensors, etc). I think there should be a low-level I2C...