Hello,
I have developed a simple application which receive the GPS signal using TinyGPSPlus and display some of the fields on a 20x4 LCD using hd44780 support.
This work fine on a UNO.
I was asked to add a TV screen as a large audience display.
Memory of the UNO was to small and the ESP_8_BIT color composite does not run on UNO either.
So I migrated my app on a NANO ESP32 and added a serial transmission to a ESP32 Wroom dev kit to isolate the TV support.
I have been struggling for one month to make this association work correctly.
It was working fro time to time, after some minor changes. The most significant problem was incorrect input from the GPS, no "\n" detected and frame truncated.
I finaly looked carefully at the Nano specs and changed the logical serial physical serial2. Now everything work fine.
I suspect a conflict between logical serial output and LCD support.
If someone can confirm, it would be a good thing to mention this limitation.
2 posts - 2 participants