1. Make sure the DUE is working correctly. Does Serial.println("Hello world") work?

Hello,

I want to help you but you have raised two questions.

Can we please first confirm that you can see the serial port in visual micro and upload okay?

Tim@Visual Micro wrote on Mar 10^th, 2018 at 3:07pm:

Hi. I understand English very badly, so I translate it using Google(
I do not understand what I need to see?
In the previous message, I put a screenshot, it shows which port I'm using.
Exactly the same as in the Arduino IDE.

I tried the studio in amtel.
The sketch is loaded.
but I do not like amtel studio.
I write on C# and would like to work in the same environment.

Tim@Visual Micro wrote on Mar 10^th, 2018 at 11:06pm:


It did not help

https://drive.google.com/file/d/1raU7KO02XSEFg-cmBURYBZyeQ61-AyDD/view

Compiling debug version of 'Blink1' for 'Arduino Due (Programming Port)'
Program size: 22 936 bytes (used 4% of a 524 288 byte maximum) (1,60 secs)
 
Uploading 'Blink1' to 'Arduino Due (Programming Port)' using 'COM3'
Uploader started for board Arduino Due (Programming Port)
Upload method will be: bootloader
Uploading via Bootloader 
no\bossac.exe -i -d --port=COM3 -U false -e -w -v -b C:\Users\aleks\AppData\Local\Temp\VMBuilds\Blink1\ARDUIN~2\Debug/BLINK1~1.BIN -R
The uploader process failed
No device found on COM3
Send auto-baud
Set binary mode

but when it started working on another port

Compiling debug version of 'Blink1' for 'Arduino Due (Native USB Port)'
Program size: 23 008 bytes (used 4% of a 524 288 byte maximum) (2,27 secs)
 
Uploading 'Blink1' to 'Arduino Due (Native USB Port)' using 'COM16'
Uploader started for board Arduino Due (Native USB Port)
Upload method will be: bootloader
Uploading via Bootloader 
PORTS {COM1,COM16} / {COM1,COM17} => {COM17}
no\bossac.exe -i -d --port=COM17 -U true -e -w -v -b C:\Users\aleks\AppData\Local\Temp\VMBuilds\Blink1\ARDUIN~1\Debug/BLINK1~1.BIN -R
Set binary mode
readWord(addr=0)=0x20001000
readWord(addr=0xe000ed00)=0x412fc230
readWord(addr=0x400e0740)=0
readWord(addr=0x400e0940)=0x285e0a60
version()=v1.1 Dec 15 2010 19:25:04
chipId=0x285e0a60
Connected at 921600 baud
..........
etc.


I do not care through which port to program.
Tell me how to configure the visual micro.
I need to send a string to the serial port and read it in the code.

Tim@Visual Micro wrote on Mar 11^th, 2018 at 2:03pm:

In the third post on the first screenshot, I showed that in Arduino IDE, sketches are loaded on the Arduino Due (Programming Port).
I also wrote above that I reinstalled the driver. I tried on different ports. I tried 10 cables.

Please show picture of device manager > com ports. Also right mouse click the Due in the device manager list and click Properties. Then confirm usb driver name + date/time

Thanks for the info

Please open the project in the arduino ide. Switch on "file>preferences>upload verbose" and the upload. Then post the upload output from arduino here.

Then I can compare the difference.

Thanks

The DUE has two ports

In Arduino IDE you must use the one that fails in Visual Micro. Otherwise your test is invalid.

Arduino Due (Programming Port)'

Please show verbose output from Arduino IDE when Programming Port is selected

Well I am confused. You have reported many different COM port numbers

In visual micro the programming port is reported by you as being COM3

In visual micro the native USB port is higher.

In arduino you have COM20 selected yet you say it is the programming port??

In the arduino output it shows board reset at 1200 baud. Reset at 1200 baud is usually associated to Native USB type connections. It is possible that this is a false output from Arduino but I will look into it.

Forcing reset using 1200bps open/close on port COM20 

Please be clear about COM port numbers and board names and explain why you have selected COM20 in arduino but COM3 in visual studio.

Thanks


ps: I read all your messages. Please be clear when you are talking about "Programming" port or "Native" port. Your reports talk about a "different port" but that is confusing because many users would say COM1 and COM2 are different ports.