cederom commented on PR #20663:
URL: https://github.com/apache/nuttx/pull/20663#issuecomment-6214567381
My local testing with the Sony Spresense board below considering:
* Tested on Python versions: 3.8, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15.
* Only SERIAL protocol is used for flashing. `import telnetlib` problem
seems fixed for Python3.13+ versions, so we are future proof again! Thank you
@Brijesh-Thakkar :-)
* Don't know how to erase chip before flashing to make sure it is blank and
flashing works correctly, @jerpelea any hints welcome :-)
* **NO TELNET FLASHING TESTED HERE**. @jerpelea could you please verity
TELNET flashing part? Or instructions on how to test? :-)
Build host and initial `spresense:nsh` firmware build:
```
% uname -a
FreeBSD hexagon 14.5-RELEASE-p2 FreeBSD 14.5-RELEASE-p2
releng/14.5-n274894-872ce416b253 GENERIC amd64
% git checkout Brijesh-Thakkar/fix/flash-writer-telnetlib-py313
% git reflog -1
304f986bab9 (HEAD, Brijesh-Thakkar/fix/flash-writer-telnetlib-py313)
HEAD@{0}: checkout: moving from master to
Brijesh-Thakkar/fix/flash-writer-telnetlib-py313
% ./tools/configure.sh -B spresense:nsh
(..)
% gmake -j
(..)
LD: nuttx
Memory region Used Size Region Size %age Used
ram: 118004 B 1536 KB 7.50%
gnssram: 0 B 640 KB 0.00%
Generating: nuttx.spk
tools/cxd56/mkspk -c2 nuttx nuttx nuttx.spk;
```
Python 3.8:
```
% python3.8 -m venv ~/.local/venv3.8
% source ~/.local/venv3.8/bin/activate
(venv3.8) hexagon% pip install xmodem pyserial
(..)
(venv3.8) hexagon% python3.8 tools/flash_writer.py -s -c /dev/cuaU0 -d -b
115200 -n nuttx.spk
>>> Install files ...
install -b 115200
Install nuttx.spk
|0%-----------------------------50%------------------------------100%|
######################################################################
118128 bytes loaded.
Package validation is OK.
Saving package to "nuttx"
updater# sync
updater# Restarting the board ...
reboot
(venv3.8) hexagon% cu -l /dev/cuaU0 -s 115200
Connected
nsh> uname -a
NuttX 10.4.0 304f986bab9 Oct 16 2026 12:54:07 arm spresense
```
Python 3.10:
```
% python3.10 -m venv ~/.local/venv3.10
% source ~/.local/venv3.10/bin/activate
(venv3.10) hexagon% pip install xmodem pyserial
(..)
(venv3.10) hexagon% python3.10 tools/flash_writer.py -s -c /dev/cuaU0 -d -b
115200 -n nuttx.spk
>>> Install files ...
install -b 115200
Install nuttx.spk
|0%-----------------------------50%------------------------------100%|
######################################################################
118128 bytes loaded.
Package validation is OK.
Saving package to "nuttx"
updater# sync
updater# Restarting the board ...
reboot
(venv3.10) hexagon% cu -l /dev/cuaU0 -s 115200
Connected
cxd56_farapiinitialize: Mismatched version: loader(20591) != Self(20596)
cxd56_farapiinitialize: Please update loader and gnssfw firmwares!!
NuttShell (NSH) NuttX-10.4.0
nsh> uname -a
NuttX 10.4.0 304f986bab9 Oct 16 2026 12:54:07 arm spresense
```
Python 3.11:
```
% python3.11 -m venv ~/.local/venv3.11
hexagon% source ~/.local/venv3.11/bin/activate
(venv3.11) hexagon% pip install xmodem pyserial
(..)
(venv3.11) hexagon% python3.11 tools/flash_writer.py -s -c /dev/cuaU0 -d -b
115200 -n nuttx.spk
>>> Install files ...
install -b 115200
Install nuttx.spk
|0%-----------------------------50%------------------------------100%|
######################################################################
118128 bytes loaded.
Package validation is OK.
Saving package to "nuttx"
updater# sync
updater# Restarting the board ...
reboot
(venv3.11) hexagon% cu -l /dev/cuaU0 -s 115200
Connected
cxd56_farapiinitialize: Mismatched version: loader(20591) != Self(20596)
cxd56_farapiinitialize: Please update loader and gnssfw firmwares!!
NuttShell (NSH) NuttX-10.4.0
nsh> uname -a
NuttX 10.4.0 304f986bab9 Oct 16 2026 12:54:07 arm spresense
```
Python 3.12:
```
% python3.12 -m venv ~/.local/venv3.12
% source ~/.local/venv3.12/bin/activate
(venv3.12) hexagon% pip install xmodem pyserial
(..)
(venv3.12) hexagon% python3.12 tools/flash_writer.py -s -c /dev/cuaU0 -d -b
115200 -n nuttx.spk
>>> Install files ...
install -b 115200
Install nuttx.spk
|0%-----------------------------50%------------------------------100%|
######################################################################
118128 bytes loaded.
Package validation is OK.
Saving package to "nuttx"
updater# sync
updater# Restarting the board ...
reboot
(venv3.12) hexagon% cu -l /dev/cuaU0 -s 115200
Connected
cxd56_farapiinitialize: Mismatched version: loader(20591) != Self(20596)
cxd56_farapiinitialize: Please update loader and gnssfw firmwares!!
NuttShell (NSH) NuttX-10.4.0
nsh> uname -a
NuttX 10.4.0 304f986bab9 Oct 16 2026 12:54:07 arm spresense
```
Python3.13:
```
% python3.13 -m venv ~/.local/venv3.13
hexagon% source ~/.local/venv3.13/bin/activate
(venv3.13) hexagon% pip install xmodem pyserial
(..)
(venv3.13) hexagon% python3.13 tools/flash_writer.py -s -c /dev/cuaU0 -d -b
115200 -n nuttx.spk
>>> Install files ...
install -b 115200
Install nuttx.spk
|0%-----------------------------50%------------------------------100%|
######################################################################
118128 bytes loaded.
Package validation is OK.
Saving package to "nuttx"
updater# sync
updater# Restarting the board ...
reboot
(venv3.13) hexagon% cu -l /dev/cuaU0 -s 115200
Connected
cxd56_farapiinitialize: Mismatched version: loader(20591) != Self(20596)
cxd56_farapiinitialize: Please update loader and gnssfw firmwares!!
NuttShell (NSH) NuttX-10.4.0
nsh> uname -a
NuttX 10.4.0 304f986bab9 Oct 16 2026 12:54:07 arm spresense
```
Python3.14:
```
% python3.14 -m venv ~/.local/venv3.14
hexagon% source ~/.local/venv3.14/bin/activate
(venv3.14) hexagon% pip install xmodem pyserial
(..)
% python3.14 tools/flash_writer.py -s -c /dev/cuaU0 -d -b 115200 -n nuttx.spk
>>> Install files ...
install -b 115200
Install nuttx.spk
|0%-----------------------------50%------------------------------100%|
######################################################################
118128 bytes loaded.
Package validation is OK.
Saving package to "nuttx"
updater# sync
updater# Restarting the board ...
reboot
(venv3.14) hexagon% cu -l /dev/cuaU0 -s 115200
Connected
cxd56_farapiinitialize: Mismatched version: loader(20591) != Self(20596)
cxd56_farapiinitialize: Please update loader and gnssfw firmwares!!
NuttShell (NSH) NuttX-10.4.0
nsh> uname -a
NuttX 10.4.0 304f986bab9 Oct 16 2026 12:54:07 arm spresense
```
Python 3.15:
```
% python3.15 -m venv ~/.local/venv3.15
hexagon% source ~/.local/venv3.15/bin/activate
(venv3.15) hexagon% pip install xmodem pyserial
(..)
% python3.15 tools/flash_writer.py -s -c /dev/cuaU0 -d -b 115200 -n nuttx.spk
>>> Install files ...
install -b 115200
Install nuttx.spk
|0%-----------------------------50%------------------------------100%|
######################################################################
118128 bytes loaded.
Package validation is OK.
Saving package to "nuttx"
updater# sync
updater# Restarting the board ...
reboot
(venv3.15) hexagon% cu -l /dev/cuaU0 -s 115200
Connected
cxd56_farapiinitialize: Mismatched version: loader(20591) != Self(20596)
cxd56_farapiinitialize: Please update loader and gnssfw firmwares!!
NuttShell (NSH) NuttX-10.4.0
nsh> uname -a
NuttX 10.4.0 304f986bab9 Oct 16 2026 12:54:07 arm spresense
```
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