ISP flash programming of ATMega32u4

Go To Last Post
4 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I just need someone to confirm what I am reading in the datasheet.

 

Both on the first page, and in the JTAG section, (picture below.  That Flash programming is done through the JTAG connection.  So am I correct in the assumption that the SPI pins are not available for Flash programming, and they are strictly for communications in a loaded application.

 

Side note.  I am aware of the bootloader in the device, but using it is not an option.

 

Basically I am asking asking for confirmation that except for the bootloader, the only other option is to use the JTAG.

 

JIm

This topic has a solution.

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user

Last Edited: Mon. Jan 11, 2016 - 02:08 PM
This reply has been marked as the solution. 
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

m I correct in the assumption that the SPI pins are not available for Flash programming,

??

 

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Continue on to chapter 28. There both parallel and serial (spi) programming is described, so jtag is not the only option.
Edit: Dang. I was too slow.

Last Edited: Sun. Jan 10, 2016 - 07:30 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Thanks John and Svuppe.

 

I read that part but the reference to FLASH memory programming was not clear(at least to me) in that section , while the JTAG was.

 

Boards have been ordered.

 

Jim

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user