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Lejla's avatar
Lejla
Icon for New Contributor rankNew Contributor
3 years ago

Cyclone IV can't recieve data trough second UART

Hello everyone, As I am working on my thesis I have encounterd a problem. I have Cyclone IV EP4CE6E22 and it is connected to two nodeMCUs. First nodeMCU sends data from RC522 RFID module and...
KellyJialin_Goh's avatar
KellyJialin_Goh
Icon for Frequent Contributor rankFrequent Contributor
3 years ago

Hi,

As I looked into your .v files, I might have found the root cause where pin 103 and 69 will not work as it is only assigned to pin 106 at the .qsf file at line 80.


At the dplomskirad.qsf file, you have assigned PIN_100 -to RxD. At your uartrx2.v and uartrx.v file you have both input as RxD resulting in both UARTs have the same functionality and same input from pin 100. However for pin 106, both UARTs are not working as it is not defined in any of the .v files that you have as there are no input RXD2.

I would suggest to have a new .v file that is able to call RXD2 and use pin_106 as UART2.

Hope this helps. Thank you.


Regards,

Kelly