Package: nxt-firmware
Version: 1.29.2-1
Severity: important
Tags: upstream

Dear Maintainer, following code debug1.nxc:

task main()
{
float a = -12.34;
NumOut(0, 32, a);

char b = a;
NumOut(0, 24, b);

Wait(3000);
}

using nbc 1.2.1.r4+dfsg-11+b1 from Debian bookworm,
compile with
$ nbc debug1.nxc -O=debug1.rxe
upload with
$ nbc -b -d debug1.rxe

with nxt-firmware 1.29.2-1 from Debian bookworm a948539b318073287733c618ea8d31f2 nxt_firmware.bin

outputs on LCD:
-12.34

0

same with 1.29.4 from upstream.

with NXT Enhanced Firmware, aka John Hansen Firmware, aka NBC/NXC Firmware a2a17802cde9bf610944757ab7ca6d92 lms_arm_nbcnxc_132_20120810_0021.rfw

outputs on LCD:
-12.34
-12

as expected.

This currently makes OpenRoberta Lab pretty unusable with this firmware
because many negative float -> char conversions occur

Thank you, Andy

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[Andreas Weber]

Dear Maintainer, following code debug1.nxc:

No idea about the nxt-firmware status, but just for fun and to show
support, I made a C edition:

% cat > x.c <<EOF
#include <stdio.h>
int main(int argc, char *argv[])
{
float a = -12.34;
printf("%f\n", a);

char b = a;
printf("%i\n", b);
return 0;
}
EOF
% gcc x.c
% ./a.out
-12.340000
-12
%

--
Happy hacking
Petter Reinholdtsen

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Am 08.03.24 um 18:42 schrieb Petter Reinholdtsen:

No idea about the nxt-firmware status, but just for fun and to show
support, I made a C edition:

Hi Petter, thank you for the reply.

This was fixed upstream with release 1.29.5 https://git.ni.fr.eu.org/nxt-firmware.git/commit/?id=3a3201ff808c1258bd8cea8c6ae471c446dd2ed9

thank you and sorry for the noise.

-- Andy

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