I was a little too fast for posting. This was made during the - very long - waiting time of uploading.
Now the upload ends with the following commplete message :
Arduino: 1.8.15 (Windows 10), Board: "Arduino MKR WiFi 1010"
Sketch uses 12000 bytes (4%) of program storage space. Maximum is 262144 bytes.
Global variables use 2204 bytes (6%) of dynamic memory, leaving 30564 bytes for local variables. Maximum is 32768 bytes.
Forcing reset using 1200bps open/close on port COM8
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
PORTS {COM8, } / {COM8, } => {}
Uploading using selected port: COM8
C:\Users\Admin\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.7.0-arduino3/bossac.exe -i -d --port=COM8 -U true -i -e -w -v C:\Users\Admin\AppData\Local\Temp\arduino_build_460058/Vide.ino.bin -R
An error occurred while uploading the sketch
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
I tried to check my 3rd MKR in this sequence :
- upload a sketch containing a simple webserver (to check internet connection).
Result : OK - upload a sketch doing an serial write / read (to check the response time)
Result : impossible to open the serial monitor + IDE stucks + no more uploads possible (like the 1st & 2nd MKR).
I must tell that this Serial sketch ran perfectly on a Mega.
I looks like a very repeatitive bootloader problem (3 times on 3 modules). Having digged a little the firmware flashing procedure here and there, I find it very complex regarding to the occurence of this problem.
Why can we not find anywhere any warning or precaution or programming advises in order to avoid this ? It seems beeing contagious of the MKR platform.