Open s-t-e-p-a-n-o-v opened 2 years ago
It's hard to find where bug is, inside arduino-pico core calls or inside TinyUSB. Corresponding issue at arduino-pico repository https://github.com/earlephilhower/arduino-pico/issues/720
Windows 10 / IDE 1.8.19 / Pico 2.4.0 Adafruit trinkey QT2040
--> Time steps of 400ms (in pairs of two)
I observe the same behavior as @s-t-e-p-a-n-o-v
Here is with pico sdk: (I removed the include statement)
--> Time steps of 200ms.
In my project (fairly large code base), my observation is that the some routines make the serial interface crashing. Only some particular (application-)commands are working. Switching to pico SDK, let all work nicely. I want to use the combination of MSC and UART. This is why I want to use adafruit TinyUSB stack.
Note: I disabled the MSC device already w/ tinyUSB, no improvement.
:+1:
I tried 1.14.1 and 1.14.3 of this lib, both have same issue.
I don't quite understand why this should be an issue. If you want to force the output just call Serial.flush();
A possible solution would be to add a flush(); and yield(); at the end of size_t Adafruit_USBD_CDC::write(const uint8_t *buffer, size_t size)
Operating System
Windows 10
IDE version
1.8.19
Board
Raspberry PICO
ArduinoCore version
2.3.3
TinyUSB Library version
1.14.1
Sketch (attached txt file)
What happened ?
Even/odd loop iteration doesn't send data to PC. Data is stored in buffer and transferred on next loop cycle.
How to reproduce ?
Compile and upload sketch with arduino-pico core with TinyUSB stack and open serial port monitor.
Debug Log
No response
Screenshots