OpenOCD on FOX Board D27

This article illustrates how to program a Berta H10 or a BrizioH10 board using OpenOCD and a FOX Board D27

Mandatory

Install on your Fox Board D27 the gpiod package as from the following articles :

Wirings - BertaH10

ACME Sensor 1 pin #	FOX Signals	GPIO ID	H10 J12 pin #	H10 Signals
2	PD27	123	1	NRST
3	PD26	122	7	SWCLK
4	PD28	124	9	SWDIO
5	PD30	126	10	V_LOAD (R 1K serial)
6	GND		6-8	GND

Wirings - BrizioH10

FOX Connector pin #	FOX Signals	GPIO ID	H10 pin	H10 Signals
J2.23	PC11	75	E15	NRST
J2.25	PC19	83	E16	SWCLK
J2.24	PC20	84	E15	SWDIO
J2.1	3V3_USER	---	W2, W3	V_LOAD
J2.39	GND	---	E24, W1	GND

Install Open OCD

Install on your Fox Board D27 the OpenOCD package (we used the microSD image available here)

sudo apt update
sudo apt install openocd

openocd -v
Open On-Chip Debugger 0.12.0

Preparing config file for Openocd

Create a file called openocd.cfg with this content:

BertaH10

adapter driver linuxgpiod
adapter gpio srst  123 -chip 0   
adapter gpio swclk 122 -chip 0
adapter gpio swdio 124 -chip 0            
reset_config srst_only srst_open_drain  
transport select swd
set CHIPNAME samr34
source [find target/at91samdXX.cfg]

BrizioH10

adapter driver linuxgpiod
adapter gpio srst   85 -chip 0   
adapter gpio swclk  83 -chip 0
adapter gpio swdio  84 -chip 0            
reset_config srst_only srst_open_drain  
transport select swd
set CHIPNAME samr34
source [find target/at91samdXX.cfg]

Launch the H10 programming using this line:

openocd -f openocd.cfg -c "program firmware.bin verify" -c "reset run" -c "exit"

Useful commands

openocd -c "adapter driver list"

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