Cross-Compilation for Raspberry Pi 4 Not Working

[busFred]

The cross-compilation settings in cross_files.txt doesn't work for the latest Raspberry Pi 4.
I changed the [host_macine] section to the following:

[host_machine]
system = 'linux'
cpu_family = 'aarch64'
cpu = 'aarch64'
endian = 'little'

But when I copied the compiled files to the Raspberry Pi 4, it shows the following message:
bash: ./example.cpp.o: cannot execute binary file: Exec format error
I also tried to execute the "sca3300-exe" file, but it didn't work. The file exists and has been set to be executable, but the terminal keeps saying the file doesn't exist when I tries to execute it.

I also tried to do local compilation, but the Raspberry Pi 4 always freeze when linking.

[Ninic0c0]

I have tried on my side and seems working on Raspberry Pi4. Please share log.

pi@rasp-laser:~ $ uname -a
Linux rasp-laser 5.4.51-v7l+ #1333 SMP Mon Aug 10 16:51:40 BST 2020 armv7l GNU/Linux
pi@rasp-laser:~ $ lscpu
Architecture: armv7l
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 1
Vendor ID: ARM
Model: 3
Model name: Cortex-A72
Stepping: r0p3
CPU max MHz: 1500.0000
CPU min MHz: 600.0000
BogoMIPS: 108.00
Flags: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
pi@rasp-laser:~ $ file sca3300-exe
sca3300-exe: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 3.2.0, BuildID[sha1]=d00e4a651d4f36a7b83ed87bb0912539854104cd, with debug_info, not stripped
pi@rasp-laser:~ $ ./sca3300-exe
Temperature: 0.000000
Accel_X: 0.000000
Accel_Y: 0.000000
Accel_Z: 0.000000
Temperature: 0.000000
Accel_X: 0.000000
Accel_Y: 0.000000
Accel_Z: 0.000000

To be honest I didn't work on it from a while :S Feel free to fork !

[trojek]

Hi!

I tried to compile the project on fresh raspberry pi OS on RPi 4 and it works with not issue, but I can't get it working. When I execute ./sca3300-exe it do nothing. Could you provide some info how did you connect RPI to SCA3300 SERIES PCB (https://www.murata.com/-/media/webrenewal/products/sensor/pdf/specification/pcbspec_scx3300.ashx?la=en&cvid=20190614072539001900) ?

[Ninic0c0]

Hi @trojek

Please double check Raspberry SPI configuration (sudo raspi-config). I'm pretty sure your bus is not enable.

Keep in my that I don't work on this library from a while.... Feel free to fork the project.

[trojek]

Hi @Ninic0c0

You was right about SPI configuration - it wasn't enabled. Currently it returns:

 Temperature: 0.000000
 Accel_X: 0.000000
 Accel_Y: 0.000000
 Accel_Z: 0.000000

I assume that I didn't wired it properly.
I connected (left RPi, right SCA3300 PCB):
GPIO10 -> MOSI
GPIO9 -> MISO
GPIO11 -> SCK
and:
GND to AVSS
3.3V to AVDD

Is it correct or not?