[SOLVED] Serial.print/println does not show in Serial Monitor

mjs513 2017-09-15 23:30:01 UTC #1

Think this was brought up before but the only thing I found was to use a FTDI cable. Anyway I just received my Flutter Wireless boards and started playing with them. I followed the instructions in the wiki and used the library to flash the range test example. No problem except I had to the hard erase first for the board to be recognized as other that an Arduino Due(programmers port). They get sinked no problem. Nothing prints to the serial monitor. The original port assigned to the board (think it was bossa....) gets changed back to Arduino due after upload.

Has anybody figured this out yet? Please let me know a solution or solutions.

thanks
Mike

mjs513 2017-09-19 20:22:26 UTC #2

Managed to solve this. I modified the range test sketch to read Adafruit BME280 sensor from the I2C port and printed out the values to the serial port. Basically it looks like to run any sketch on the board you have to have the radio code portion connected. If you want to print to the serial port use SerialUSB.print or SerialUSB.println, etc. I will post the sketch in the same folder as my SPI mods.

By the way, this should not be the case, the sketch should run whether the radio coded in connected or not. Have not investigated this yet.

mjs513 2017-09-21 00:36:45 UTC #3

Here are a few more notes from the sketch I have been using:
/********************************************************************/
* Using SerialUSB has it quirks so becareful in using it
* 1. It appears that the radio is somehow linked to the operation
* of the USB so you can not use it unless you actually have it
* operational either as a transmitter or as a receiver.
* 2. When you first start the radio as in the initRadio function
* you can not use SerialUSB, if you try it will hang the sketch
* at the initializing the radio.
* 3. After loading a sketch and you restart the Flutter (may restart
* automatically but more often than not you have to unplug it
* and plug it back in) it will appear as a Arduino Due programmers
* port. Not to worry it still works.
* 4. If you open the SerialUSB port while the sketch is running and
* then close it, the sketch will stop, period and you have to
* disconnect from the computer and then reconnect it. This goes
* for both the transmit and receive sketches
* 5. Bi-directional communication is not implemented.
*
*********************************************************************/