BMD301
Contents
Install OpenOCD
https://learn.adafruit.com/programming-microcontrollers-using-openocd-on-raspberry-pi/wiring-and-test
# openocd -f interface/raspberrypi-native.cfg -c "transport select swd; set WORKAREASIZE 0" -f target/nrf51.cfg # openocd -f interface/raspberrypi2-native.cfg -c "transport select swd; set WORKAREASIZE 0" -f target/nrf52.cfg
# openocd
Open On-Chip Debugger 0.10.0+dev-00096-gf605a23 (2017-04-05-19:26)
Licensed under GNU GPL v2
For bug reports, read
BCM2835 GPIO nums: swclk = 25, swdio = 24
BCM2835 GPIO config: srst = 18
srst_only separate srst_gates_jtag srst_push_pull connect_deassert_srst
adapter speed: 10000 kHz
cortex_m reset_config sysresetreq
srst_only separate srst_nogate srst_push_pull connect_deassert_srst
adapter_nsrst_delay: 100
adapter_nsrst_assert_width: 100
Info : BCM2835 GPIO JTAG/SWD bitbang driver
Info : SWD only mode enabled (specify tck, tms, tdi and tdo gpios to add JTAG mode)
Info : clock speed 4061 kHz
Info : SWD DPIDR 0x2ba01477
Error: Could not find MEM-AP to control the core
TargetName Type Endian TapName State
-- ------------------ ---------- ------ ------------------ ------------
0* nrf52.cpu cortex_m little nrf52.cpu unknown
Error: Could not find MEM-AP to control the core
Error: Target not examined, will not halt after reset!
TARGET: nrf52.cpu - Not halted
in procedure 'reset' called at file "openocd.cfg", line 14
in procedure 'ocd_bouncer'
Telnet in to the OCD server
telnet localhost 4444
(must first apt-get install telnet)
Need to turn off access port protection
dap apreg 1 0x0c dap apreg 1 0x04 0x01 reset
To cross compile on Pi
gcc -mcpu=cortex-m4 -nostdlib <What Do YOU WANT>
https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=78649
Simple, but doesn't work:
error:target CPU does not support ARM mode
Flashing the nRF5x
https://devzone.nordicsemi.com/question/124061/how-to-load-hex-to-nrf51-with-openocd/
