I have a project that need to talk with BLE, GPS and a control device and all of them use Serial communication.
I was able to use Serial on TX/RX, Serial4 on C2/C3. However I still need another one to talk with.
I tried to use Serial2 but I found it need RGB led being removed.
ParticleSoftSerial I found from here https://github.com/ScruffR/ParticleSoftSerial seems not working either.
And I found this article.
Do you think adding a dedicated chip is only solution at this time? What else I can try?