LPC1857 jump to USB/DFU bootloader from the application

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by g.seidl on Tue Mar 11 05:35:14 MST 2014
We want to use the USB/DFU mechanism to update our firmware.
The USB/DFU loader is already implementetd in the boot rom.
The USB/DFU loader starts normally on power up if the Boot mode = USB0
and the boot pin P2_7  = high.
This works.

But we want to jump to the USB/DFU loader (in the boot rom) from our firmware (in the internal flash).
How can we jump to the USB/DFU loader (without reset, without powerup, without P2_7 = high) ?

Background: We don't want to have a boot jumper.

Any ideas ?

Thank you!