MicroPython Forum (Archive)

Hello Pythoncoder, Great work! What you did was on my long term todo list... :-) I ran your class in a 'quick and dirty' way on my Pyboard with a sensor board called GY-88 which has a MPU6050 and a HMC5883. I ran the update function without calibrating first and I get meaningful stable values. I hav...

Damien gave an example a while ago to read 8 pins at once by reading a hardware register
http://forum.micropython.org/viewtopic.php?f=2&t=557 (4th post)

There probably is a similar register for writing?

I came across this thread, maybe the link below can help somebody... I've no time soon to look into this myself but I found sample code to control this display over SPI. Maybe it can be ported to Python? The display is indeed nice and cheap! (I've used in in and Arduino project) page: https://www.ol...

It would be interesting to read (and timestamp) the ADC in a timer callback...

Just guessing here... maybe the lcd module is not ready yet? You could try a small delay at the start of the script...

Just did a small test: reading 8 bit samples into an array runs at 47 Khz. A bit slow for a logic analyzer... Maybe a small assembler loop could bring this to 10 or 20 MHz? ;) N=1000.0 a=array.array('B') start = pyb.micros() for i in range(N): a.append(stm.mem32[stm.GPIOA + stm.GPIO_IDR]) dt = pyb.m...

I experimented with timer callback at 10Khz (= 100 us), but I'm not sure how much I/O you can put in it...

The attached script triggers a Sony NEX camera every 5 seconds by sending the appropriate pulses to an IR LED connected to pin X2. This will be part of a larger project (remotely controlled camera rig). I post this 'snippet' her in case somebody would need something similar. It can be adapted easily...

Is there a way to modify an external interrupt (say map to a different callback)? ExtInt has no deinit(), and when calling the constructor again for the same pin one gets an exception: ExtInt vector 1 is already in use def callback1(line): print ("cb 1") def callback2(line): print ("cb 2") pin = pyb...

I tried the 'modulated time' example. It works, thanks again! I believe decoding and encoding IR signals is feasible. I tested the example with a spare Arduino programmed as 'logic analyzer' with OLS. (unreliable and uncomfortable but cheap setup) I've done IR stuff with Arduinos: quite easy with th...