Hi,
When I start my program Processing to read data from Arduino, I see this error message
[0] "/dev/cu.BeatsPill-SPPDev-1"
[1] "/dev/cu.Bluetooth-Incoming-Port"
[2] "/dev/cu.JBLFlip3-SPPDev"
[3] "/dev/cu.UEBOOM-LWACP"
[4] "/dev/cu.usbmodem14201"
[5] "/dev/tty.BeatsPill-SPPDev-1"
[6] "/dev/tty.Bluetooth-Incoming-Port"
[7] "/dev/tty.JBLFlip3-SPPDev"
[8] "/dev/tty.UEBOOM-LWACP"
[9] "/dev/tty.usbmodem14201"
map(NaN, 0, 2774, 0, 36) called, which returns NaN (not a number)
Error, disabling serialEvent() for /dev/cu.usbmodem14201
null
So to fix the problem, I unplugged the usb serial port, I plug it and re-start my program in Processing.
Then, I can receive my datas.
An other problem is : why I have twice my port Arduino (/dev/tty.usbmodem14201) red in Processing, to the port 4 and the port 9?