rpi2 jtag

How To JTAG Raspberry Pi 2 Preparing Raspberry PI for JTAG Debugging Here are the GPIO numbers for the current revision:

JTAG pin	"ALT4" mode	"ALT5" mode
TDI	GPIO26	GPIO4
TDO	GPIO24	GPIO5
TMS	GPIO27	GPIO12
TCK	GPIO25	GPIO13
RTCK	GPIO23	GPIO6
TRST	GPIO22	N/A

樹莓派 2 gpio pin

JTAG	RPi2 GPIO	gpio number
VREF*	Pin 1	3.3 v
nTRST	Pin 15	gpio 22
GND	Pin 9	GND
TDI	Pin 7	gpio 4
TMS	Pin 13	gpio 27
TCK	Pin 22	gpio 25
TDO	Pin 18	gpio 24