MicroPython Forum

OlivierLenoir

Did you try to deinit ADC and Pin?

from machine import ADC

pin_adc = Pin(32)
adc = ADC(pin_adc)

# your code

adc.deinit()
pin_adc.deinit()

or maybe this method:

Code: Select all

from machine import ADC

adc = ADC(Pin(32))

# your code

adc.deinit()

OlivierLenoir

To learn Python, you can start by How to Think Like a ComputerScientist: Learning with Python 3DocumentationRelease 3rd Edition.
I also read O'Reilly book's Learning Python, Programming Python and Programming with MicroPython.

OlivierLenoir

Pulse view.

: Screenshot at 2021-03-20 13-25-18.png (32.72 KiB) Viewed 271 times

OlivierLenoir

There is a small mistake on you code. You forget to declare the ADC pin. You should do this one. from machine import Pin from machine import ADC from time import sleep def read_adc(adc_pin, sample=24): cumul = 0 for _ in range(sample): cumul += acd_pin.read() return cumul // sample # default 24 samp...

OlivierLenoir

Full SN74HCS264 project is available here.
Here a test.

Code: Select all

from sn74hcs264 import SN74HCS264
from machine import Pin


a = Pin(2, Pin.OUT)
b = Pin(4, Pin.OUT)
clk = Pin(16, Pin.OUT)
clr = Pin(17, Pin.OUT)

register = SN74HCS264(a, b, clk, clr)

register.write(37)
register.clear()

OlivierLenoir

It a draft and under development version a driver for SN74HCS264 . # Author: Olivier Lenoir - olivier.len02@gmail.com # Created: 2021-03-20 10:00:08 # License: MIT, Copyright (c) 2021 Olivier Lenoir # Language: MicroPython v1.14 # Project: SN74HCS264 # Description: MicroPython Driver for SN74HCS264 ...

OlivierLenoir

If you refer to this document, you can improve reading by adding 0.1µF capacitor and / or sampling the ADC reading. A code to sample the ADC reading. from machine import Pin from machine import ADC def read_adc(adc_pin, sample=24): cumul = 0 for _ in range(sample): cumul += acd_pin.read() return cum...

OlivierLenoir

My Chinese in very poor (around ten words) and as Google seem to be a lot better than me, here is the translation. 按照你的说明，首先替换了你提供的modframebuf.c(git 连接下载）修改了stream.c stream.h你说的相关内容，目前我是用的stm32 1.14环境，ss1306 但是做了几次，都是make 提示错误，按照编译提示，是越改问题越多。希望你把相关改好的文件mail给我，谢谢！ According to your instructions, ...

OlivierLenoir

In case you're using an ESP32 device with RMT you can use this.

In case you're using an other standard GPIO device, you can use this.

The standard example is here.

Feel free to let know if you need additional information.

OlivierLenoir

According to the DM556 datasheet, you should be able to use project MicroPython-Multiaxis to drive stepper motors with DM556.

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