Fix README formatting and enhance Zephyr application instructions

[nayakned]

No description provided.

[SebastianSchildt]

Wenn du eh gerade korrigierst, hier steht noch CAN "inzterface"

[SebastianSchildt]

The interface needs to be "vcan0" instead of zcan, the I got native_sim to run.

The suggested native_sim compile line

west build -b native_sim -d build_native_sim . -- -DCONF_FILE=examples/acf-can/zephyr/prj.conf -DOPEN1722_ZEPHYR_APP=acf-can-bridge -DDTC_OVERLAY_FILE=examples/acf-can/zephyr/boards/native_sim.overlay # For native_sim

Fails on my (arm) machine with

Make Error at /root/zephyrproject/zephyr/arch/posix/aarch64.cmake:28 (message):
  CONFIG_64BIT=n but this Aarch64 machine has a 64-bit userspace.

  If you were targeting native_sim, target native_sim/native/64 instead.

  Otherwise, be sure to define CONFIG_64BIT appropriately.

Call Stack (most recent call first):
  /root/zephyrproject/zephyr/arch/posix/CMakeLists.txt:58 (include)

This an be fixed with

west build -b native_sim/native/64 -d build_native_sim . -- -DCONF_FILE=examples/acf-can/zephyr/prj.conf -DOPEN1722_ZEPHYR_APP=acf-can-bridge -DDTC_OVERLAY_FILE=examples/acf-can/zephyr/boards/native_sim.overlay

I suggest listing both variants (first, I have e not tested 64bot on intel, and in any case building "native" in 32 bit might still be useful as most embedded targets are 32 bit)

Also I found west build -t run can not be used to to run nativesim, instead I needed to do

./build_native_sim/zephyr/zephyr.exe

(yes even on Linux it was called .exe)

So maybe add that option

[SebastianSchildt]

I suggest doing to seperate code blocks

xxx

for native_sime and normal host, because then the "copy" icon from GH is more useful (nobody needs both lines). Similarly t prevent people from needing to edit, remove the leading '$'

(Bonus: also rmeove the '$' from the Zepyhr sourcing a few lines up)