MicroPython Forum (Archive)

Nope, using hardware timers doesn't work. My code is here: https://github.com/goatchurchprime/jupyter_micropython_developer_notebooks/blob/master/FileSystemTests/TimedWritesUsingIRQ.ipynb I've got a 10ms period and start it working with: timer = Timer(0); timer.init(period=10, mode=Timer.PERIODIC, c...

I know the UART (in and out) responds asynchronously. It's the filewrite (using spi_flash_write) to the flash memory that has this delay of 80ms. When I try to record a long sequence values from a sensor at high frequency (eg 2ms) I get these big gaps in the sensor data whenever the file hits a 4096...

So I'm trying to log a temperature sensor at 10ms intervals to the flash (for analysis of time constants) and these 80ms gaps in the data are not ideal. I think the file.write() eventually goes via flashbdev.esp.flash_write(), which then calls to the low-level Espressive function spi_flash_write(): ...

I've noticed that you can write data to the file system very quickly, about 1.3miliseconds per 8 byte block, but then every time 4096 bytes gets written it stalls for 90miliseconds. The same effect happens on the ESP8266 but a little slower. Is there a way to avoid this stalling? Can the async featu...

A lot of Python is nowadays written in the Jupyter IPython notebook environment. So I've got Micropython working through this interface. https://github.com/goatchurchprime/jupyter_micropython_kernel/ I use its commands to flash the board and to upload files. https://github.com/goatchurchprime/jupyte...

I'd like to hear how that's going as well.

But in the meantime I've found that my jupyter plugin for the ESP8266 seems to work on the ESP32 pretty much as-is:
https://github.com/goatchurchprime/jupy ... hon_kernel