Halt when useing RP2040 with TM1652

[YeWuChen]

I tried using RP2040 to drive TM1652, but the example would crash and Windows would prompt an unrecognized USB devices.
But I can use hardware serial to driven TM1652, just use 'Serial2.begin(19200,SERIAL_8O2);' and set the TX pin to hardware serial pin, just
pay attention to the initialization, need to add a about 6ms of delay between the cleardisplay and send command.

Arduino IDE version: 1.8.19
RP2040 version: 3.6.0 by Earle F. Philhower, III

And there's my code:
my_TM1652.zip

It would be great if this library could be used hardware serial with all the good features of TM16XX library！

[maxint-rd]

Hello @YeWuChen ,
Thank you for submitting this issue. It's great to read you found a workaround for the issue you encountered.

Some time ago I encountered stability issues with the TM1640 on RP2040. (See the short video clips in those posts). Unfortunately even after using a better scope, I wasn't able to determine the cause. I'm definitely no expert on the RP2040. Perhaps your findings can help to implement a solution of some sort. From what I recall I've not done any testing using hardware serial on the RP2040. Also I have not tested all TM16xx chips in my collection with the RP2040.

I think I need to do some more testing on the RP2040 to see what issues I can reproduce and if possible fix. Unfortunately my work on the TM16xx library is limited to the spare time I have available. Because of that it may take quite some time before I can respond with my findings. I will keep this issue open until I've done so.

BTW. which example code did you use that halted the RP2040?

[YeWuChen]

Hello @maxint-rd ,
Thank you very much for your reply! I used the two examples TM16xx setSegments and TM16xxDisplay_Print, and modified the header files and classes in the examples to TM1652, and set the pin and parameters.Both examples resulted in the RP2040 halted，So I didn't try other examples, but these two examples with modified header files and classes to TM1652 programmed into my Mega2560 worked fine！

With best wishes.