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I am using the 4 UARTs. 1 for the USB connection1 for a GPS module1 for a DroneCell modem1 for future expansion to OBD II data.
If I unplug the USB, after checking just now and playing some more is I get weird characters on the LCD
It's only when I start/power up by the switch with USB unplugged and only getting power from the wall transformer that I get strange LCD behavior and on a rare occasion nothing comes up on the LCD although something is happening as LED blinks.
SPI is setup in the project from Project Designer (Webbotlib) but not yet implemented for an SD card, so no connections to those pins yet.
// There is no appropriate prescale value for the frequency you want#define NO_APPROPRIATE_TIMER_PRESCALE_VALUES -8
Yeap, Gertlex is right, it's a WebbotLib error preventing the running of your code.