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AVR PDI / Atmel ATxmega128A1
-------------------------------------------------------------------------------
These are example captures of the Atmel Program and Debug Interface (PDI).
The programmer is Atmel's JTAG ICE III and avrdude 6.0.1. The target device
is an ATxmega128A1 (Atmel's Xplained eval board).
Logic analyzer setup
--------------------
The logic analyzer used was an Asix Sigma2 (at 10MHz):
Probe Signal
-----------------------
1 RESET / PDI_CLK
2 PDI_DATA
Data
----
The following activities were captured:
- Identify a target device:
avrdude -c jtag3pdi -p x128a1
- Program (write) a blinkenlight firmware:
avrdude -c jtag3pdi -p x128a1 -Uflash:w:blinky.hex
- Verify (read back) the blinkenlight firmware:
avrdude -c jtag3pdi -p x128a1 -Uflash:v:blinky.hex
The protocol decoder can extract data when used like this:
- Get the bytes which form the PDI requests and responses:
sigrok-cli -i atxmega128a1-pdi-identify.sr -P avr_pdi -B avr_pdi=bytes | hexdump -Cv
- Get the interpreted PDI instructions and their data:
sigrok-cli -i atxmega128a1-pdi-identify.sr -P avr_pdi -A avr_pdi=cmd-data
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