projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 575a77a6 GS |
1 | ------------------------------------------------------------------------------- |
| 2 | AVR PDI / Atmel ATxmega128A1 | |
| 3 | ------------------------------------------------------------------------------- | |
| 4 | ||
| 5 | These are example captures of the Atmel Program and Debug Interface (PDI). | |
| 6 | ||
| 7 | The programmer is Atmel's JTAG ICE III and avrdude 6.0.1. The target device | |
| 8 | is an ATxmega128A1 (Atmel's Xplained eval board). | |
| 9 | ||
| 10 | ||
| 11 | Logic analyzer setup | |
| 12 | -------------------- | |
| 13 | ||
| 14 | The logic analyzer used was an Asix Sigma2 (at 10MHz): | |
| 15 | ||
| 16 | Probe Signal | |
| 17 | ----------------------- | |
| 18 | 1 RESET / PDI_CLK | |
| 19 | 2 PDI_DATA | |
| 20 | ||
| 21 | ||
| 22 | Data | |
| 23 | ---- | |
| 24 | ||
| 25 | The following activities were captured: | |
| 26 | ||
| 27 | - Identify a target device: | |
| 28 | avrdude -c jtag3pdi -p x128a1 | |
| 29 | ||
| 30 | - Program (write) a blinkenlight firmware: | |
| 31 | avrdude -c jtag3pdi -p x128a1 -Uflash:w:blinky.hex | |
| 32 | ||
| 33 | - Verify (read back) the blinkenlight firmware: | |
| 34 | avrdude -c jtag3pdi -p x128a1 -Uflash:v:blinky.hex | |
| 35 | ||
| 36 | The protocol decoder can extract data when used like this: | |
| 37 | ||
| 38 | - Get the bytes which form the PDI requests and responses: | |
| 39 | sigrok-cli -i atxmega128a1-pdi-identify.sr -P avr_pdi -B avr_pdi=bytes | hexdump -Cv | |
| 40 | ||
| 41 | - Get the interpreted PDI instructions and their data: | |
| 42 | sigrok-cli -i atxmega128a1-pdi-identify.sr -P avr_pdi -A avr_pdi=cmd-data |