Good afternooon.
I have used Teensy 3.2s for more than 2 years, and have four or five of them involved in quite a large MIDI project. They work well.
However, I recently purchased a Teensy 4.1 as I need more pins.
Unfortunately I cannot get the Teensy 4.1 working at all. It is recognised by Windows as soon a USB plug is connected, and immediately runs the installed "Blink" program. However, uploading any program (including those which run properly with the 3.2) fails.
As you expect code, I have returned to the simplest program I know:
I have used Teensy 3.2s for more than 2 years, and have four or five of them involved in quite a large MIDI project. They work well.
However, I recently purchased a Teensy 4.1 as I need more pins.
Unfortunately I cannot get the Teensy 4.1 working at all. It is recognised by Windows as soon a USB plug is connected, and immediately runs the installed "Blink" program. However, uploading any program (including those which run properly with the 3.2) fails.
As you expect code, I have returned to the simplest program I know:
Code:
void setup()
{
Serial.begin (9600);
// Nothing much to set up!
}
void loop()
{
Serial.println ("Teensy 4.1: Hello world!");
delay (500);
}
/CODE]
Of course this code uploads and works with any of my Teensy3.2s, But it will not upload to the 4.1.
The IDE offers the message:
"[I]Sketch uses 12780 bytes (4%) of program storage space. Maximum is 262144 bytes.
Global variables use 6000 bytes (9%) of dynamic memory, leaving 59536 bytes for local variables. Maximum is 65536 bytes.
C:\Program Files (x86)\Arduino\hardware\teensy/../tools/teensy_post_compile -file=Test_sketch.ino -path=K:\...\Arduino\HEX -tools=C:\Program Files (x86)\Arduino\hardware\teensy/../tools -board=TEENSY31 -reboot -port=COM1 -portlabel=COM1 -portprotocol=serial
Teensy did not respond to a USB-based request to enter program mode.
Please press the PROGRAM MODE BUTTON on your Teensy to upload your sketch[/I]".
Pressing the Program Mode button on the 4.1 has no effect, except to stop the Blink program, and flash a red LED by the USB socket. After removing & reinserting the USB plug, the Blink program resumes.
So what am I missing?
I am using v 1.8.9 of the IDE. Do I need a different version of the Teensyduino addin? (I cannot find out how to identify the version of Teesnyduino in use). I note that the Teensy 4.1 does not appear on the Boards Menu.
Thanks in advance
Kenneth Spencer