@tbowmo Any new idea?

Yes , 4 different . One doesn't work (the board is not recognized) , the other three give the same result / error .

Hi

Your example gives the same error , but it loads the sketch , and the sketch runs without problems ... strange for me , this are the messages :

Sketch uses 9784 bytes (3%) of program storage space. Maximum is 262144 bytes.
Atmel SMART device 0x10010000 found
Device : ATSAMD21J18A
Chip ID : 10010000
Version : v2.0 [Arduino:XYZ] Jan 10 2017 21:13:45
Address : 8192
Pages : 3968
Page Size : 64 bytes
Total Size : 248KB
Planes : 1
Lock Regions : 16
Locked : none
Security : false
Boot Flash : true
BOD : true
BOR : true
Arduino : FAST_CHIP_ERASE
Arduino : FAST_MULTI_PAGE_WRITE
Arduino : CAN_CHECKSUM_MEMORY_BUFFER
Erase flash
done in 0.821 seconds

Write 10040 bytes to flash (157 pages)

[============ ] 40% (64/157 pages)
SAM-BA operation failed
An error occurred while uploading the sketch

[======================== ] 81% (128/157 pages)
[==============================] 100% (157/157 pages)
done in 0.079 seconds

Verify 10040 bytes of flash with checksum.
Verify successful
done in 0.015 seconds
CPU reset.

Then I add two simple lines :

#define MY_GATEWAY_SERIAL
#include <MySensors.h>

And the sketch doesn´t load :

Sketch uses 31152 bytes (11%) of program storage space. Maximum is 262144 bytes.
Atmel SMART device 0x10010000 found
Device : ATSAMD21J18A
Chip ID : 10010000
Version : v2.0 [Arduino:XYZ] Jan 10 2017 21:13:45
Address : 8192
Pages : 3968
Page Size : 64 bytes
Total Size : 248KB
Planes : 1
Lock Regions : 16
Locked : none
Security : false
Boot Flash : true
BOD : true
BOR : true
Arduino : FAST_CHIP_ERASE
Arduino : FAST_MULTI_PAGE_WRITE
Arduino : CAN_CHECKSUM_MEMORY_BUFFER
Erase flash
done in 0.822 seconds

Write 31476 bytes to flash (492 pages)

[=== ] 13% (64/492 pages)
[======= ] 26% (128/492 pages)
[=========== ] 39% (192/492 pages)
[=============== ] 52% (256/492 pages)
[=================== ] 65% (320/492 pages)
[======================= ] 78% (384/492 pages)
[=========================== ] 91% (448/492 pages)
[==============================] 100% (492/492 pages)
done in 0.235 seconds

Verify 31476 bytes of flash with checksum.
Verify successful
done in 0.043 seconds
CPU reset.

SAM-BA operation failed
An error occurred while uploading the sketch

I have a new Sensebender Gateway with a RF69HW , and I am trying to upload the first sketch , and I am getting an error "SAM-BA operation failed" .

Arduino IDE 1.8.2
Arduino SAMD Boards 1.6.16
Mysensors SAMD 1.05

I have already tried different configuration and always getting the same error , anyone can help me ?

Sketch uses 34968 bytes (13%) of program storage space. Maximum is 262144 bytes.
Atmel SMART device 0x10010000 found
Device : ATSAMD21J18A
Chip ID : 10010000
Version : v2.0 [Arduino:XYZ] Jan 10 2017 21:13:45
Address : 8192
Pages : 3968
Page Size : 64 bytes
Total Size : 248KB
Planes : 1
Lock Regions : 16
Locked : none
Security : false
Boot Flash : true
BOD : true
BOR : true
Arduino : FAST_CHIP_ERASE
Arduino : FAST_MULTI_PAGE_WRITE
Arduino : CAN_CHECKSUM_MEMORY_BUFFER
Erase flash
done in 0.819 seconds

Write 35308 bytes to flash (552 pages)

[=== ] 11% (64/552 pages)
[====== ] 23% (128/552 pages)
[========== ] 34% (192/552 pages)
[============= ] 46% (256/552 pages)
[================= ] 57% (320/552 pages)
[==================== ] 69% (384/552 pages)
[======================== ] 81% (448/552 pages)
[=========================== ] 92% (512/552 pages)
SAM-BA operation failed
An error occurred while uploading the sketch

[==============================] 100% (552/552 pages)
done in 0.281 seconds

Verify 35308 bytes of flash with checksum.
Verify successful
done in 0.044 seconds
CPU reset.

After this error the led D5 (orange) stays ON , and I have to make two reset to have the board available again .

0_1503765783438_SensebenderGatewaySerial.ino