Where could I find the source code for the serial bootloader for K60?
You can find the software package here, which has K60 projects: Software for AN2295
Also in order to save pins, by default the bootloader does not use a pin to enter bootloader mode, it uses the UART. This is configurable though. See section 2.1 of the app note.
please search an2295 in Freescale web site, it covers serial bootloader for kinetis.
I read the AN2295, but there is no code for K60. One more thing is that if I want K60 to go to bootloader, which pin should I pull low?
The link was down. With some searching I found the source code package here: http://cache.freescale.com/files/microcontrollers/doc/app_note/AN2295SW.zip
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