Content originally posted in LPCWare by shansohn on Wed Dec 12 14:29:06 MST 2012
I have an LPC1857 device that only supports firmware upgrade via USB0/DFU (hardwired per Table 13 of UM10430).
I'd like the application code to reinvoke ISP USB0/DFU on user command to upgrade firmware.
Q1: Can the Reinvoke ISP (IAP code 57) be used for this, or will that only support ISP via UART0?
Q2: If not, how would I reset the device so it enumerates back as a DFU-mode device. (e.g. invalidate the currently running flash bank so that ISP USB0/DFU mode will be run on the next device reset?)
