MicroPython Forum (Archive)

fivdi

I don't know what the problem is here but perhaps it's a poor USB connection? Does the operating system on your PC report any errors related to USB? For example, if you are using Linux on your PC, does running the dmesg command from a terminal window display error messages related to USB?

fivdi

Calling uasyncio.run(main(Pin(1), Pin(2))) from main.py/boot.py is blocking I would say that main spends most of it's time waiting for a 10_000 millisecond delay to expire rather than saying it is blocking. main doesn't block other coroutines from running while waiting for the 10_000 millisecond de...

fivdi

Are the required pull-up resistors on the SCL + SDA lines?

fivdi

A post which links to blog posts about the board linked to above can be found at viewtopic.php?f=5&t=11953. The MicroPython port for "ESP32-C3 with USB" was used.

fivdi

Did the hint mean to say something other than return'? I guess the word return is overloaded. In the context of an ISR the returned data doesn't mean the value sent back to the ISR caller with a return statement. It means the data that the ISR knows about that it needs to share with (or return to) ...

fivdi

Deriving from IOBase may be an alternative. Something along the lines of this:

Code: Select all

import io

class A(io.IOBase):
    sio = io.StringIO()

    def write(self, buf):
        return self.sio.write(buf)

a = A()
print('hello', file=a)

print(a.sio.getvalue())

fivdi

It looks like the environment isn't set up correctly for ESP-IDF development. In other words, I think esp-idf hasn't been installed correctly yet. For example, on my system, the command "idf.py --version" shows me that I have ESP-IDF v4.4 installed. $ idf.py --version ESP-IDF v4.4 Then, by running t...

fivdi

When UART.write(buf) is called, the buf passed can be any object that implements the buffer protocol such as bytes, bytearray, memoryview and str. See also buffer protocol.

fivdi

read_uv (at least for the ESP32) was added after MicroPython 1.18 was released and as such isn't available in 1.18. The documentation link posted above is https://docs.micropython.org/en/latest/esp32/quickref.html#adc-analog-to-digital-conversion. This is a link to the latest documentation rather th...

fivdi

I found that the hardware SPI pins MISO and MOSI are 12 and 13, which seems to be a method of utilising the raw (potential) speed. Is it possible to provided bytes to a buffer directly and let the hardware deal with sending the bits? Yes, it's possible to let hardware deal with sending the bits. Ta...

MicroPython Forum (Archive)

Search found 16 matches

Re: unstable ESP32

Re: uasyncio run in background

Re: Problem with I2C?

Re: Bejazzled ESP32 AKA C3FH4 RGB

Re: Callback fuzziness???

Re: subclassing io.StringIO gives me an unhandled exception

Re: Setup for Compiling MicroPython firmware - stuck

Re: newbie bytes byte-arrays and uarts

Re: ESP32: 'ADC' object has no attribute 'read_uv'

Re: bit banging code example