RE: Failed to write to nrf5 flash when flash bootloader with openocd and cmsis dap link

yejianfengblue — Mon, 24 Jan 2022 10:47:07 GMT

Add set WORKARESIZE 0 to to top of /usr/share/openocd/scripts/target/nrf52.cfg

#
# Nordic nRF52 series: ARM Cortex-M4 @ 64 MHz
#
set WORKAREASIZE 0

source [find target/swj-dp.tcl]

if { [info exists CHIPNAME] } {
        set _CHIPNAME $CHIPNAME
} else {
        set _CHIPNAME nrf52
}

# Work-area is a space in RAM used for flash programming
# By default use 16kB
if { [info exists WORKAREASIZE] } {
   set _WORKAREASIZE $WORKAREASIZE
} else {
   set _WORKAREASIZE 0x4000
}

500kb hex file tooks minutes. Slow but seems work.

openocd -d2 -f interface/cmsis-dap.cfg -f target/nrf52.cfg -c "init" -c "program ./bootloader.hex verify reset exit"

Open On-Chip Debugger 0.11.0
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
debug_level: 2

Info : auto-selecting first available session transport "swd". To override use 'transport select <transport>'.
Info : CMSIS-DAP: SWD  Supported
Info : CMSIS-DAP: FW Version = 2.0.0
Info : CMSIS-DAP: Serial# = 205526554555
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 0 TDO = 0 nTRST = 0 nRESET = 1
Info : CMSIS-DAP: Interface ready
Info : clock speed 1000 kHz
Info : SWD DPIDR 0x2ba01477
Info : nrf52.cpu: hardware has 6 breakpoints, 4 watchpoints
Error: nrf52.cpu -- clearing lockup after double fault
Polling target nrf52.cpu failed, trying to reexamine
Info : nrf52.cpu: hardware has 6 breakpoints, 4 watchpoints
Info : starting gdb server for nrf52.cpu on 3333
Info : Listening on port 3333 for gdb connections
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0xfffffffe msp: 0xfffffffc
** Programming Started **
Info : nRF52840-xxAA(build code: D0) 1024kB Flash, 256kB RAM
Info : Padding image section 0 at 0x00000b00 with 1280 bytes
Info : Flash write discontinued at 0x00025de8, next section at 0x000f4000
Warn : Adding extra erase range, 0x00025de8 .. 0x00025fff
Warn : not enough working area available(requested 34)
Warn : no working area available, falling back to slow memory writes
Info : Padding image section 2 at 0x000fca9c with 3428 bytes
Warn : Adding extra erase range, 0x000fd858 .. 0x000fdfff
Warn : not enough working area available(requested 34)
Warn : no working area available, falling back to slow memory writes
Warn : Adding extra erase range, 0x10001000 .. 0x10001013
Warn : Adding extra erase range, 0x1000101c .. 0x10001fff
Warn : not enough working area available(requested 34)
Warn : no working area available, falling back to slow memory writes
** Programming Finished **
** Verify Started **
Warn : not enough working area available(requested 52)
Warn : not enough working area available(requested 52)
Warn : not enough working area available(requested 52)
Warn : not enough working area available(requested 52)
Warn : not enough working area available(requested 52)
** Verified OK **
** Resetting Target **
shutdown command invoked