4 replies to this topic

[Nym]

Hi community,

 

I have been reading different posts about flashing the new firmware 4.2 in the Netduino using either usb or serial. My question is the following: I have my custom Pcb board using same atmel chip as netduino and only can be accessed through com1 port for debuggingdeploying, is it possible to do the a firmware flashing using this serial port? I have been successful when flashing my development board because uses usb but still not luck with only serial com1 for my Pcb board. Can somebody shed some light here to my trouble. Thanks in advance

[Nym]

Any hero   ?????

[Chris Walker]

Hi Nym, If you are using the Atmel chip, you can use the DBGU serial port (pins D0/D1 on Netduino gen1). But you can't power your board via USB at the same time--or else SAM-BA will try using the USB port instead. If you are using the ST chip, you can use the USB port or one of the bootloader-supported serial ports. You will want to disable the other ones with pull-ups/pull-downs so that the autodetect works properly. In either case, you can flash via MFDeploy over any serial port...you just need to configure the firmware source settings for the port you're wanting to support. So that it's your deployment port. Chris

[Nym]

Thanks Chris for that A+ answer, I see where my problem was because I was trying my production deployment technique in the development board which I was trying to flash it using serial meanwhile was USB powered and of course SAM-BA was fighting me to use such port. Now, in my pcb board the Atmel SAm7x chip is powered by my voltage supply circuit so no usb interface is in use and I should be more than able of flashing it using serial. Thanks for bringing that peace on mind, however I will keep posted my result to the community.

 

Nym

[Nym]

Hi chris,

 

I cannot get the sam-ba see my custom board micro, I'm using the at91sam7x512-Au as the original Netduino, any hints here? Also, I didn't put a gold dot as netduino board to erase chip,instead I have a female header pins where I cross a jumper from 3.3V to that pins for few ms and then release it but I cannot get the pc to see after that. Any help troubleshooting this will be appreciate.