martinling
commented
1 month ago The first problem you have is:
symbol lookup error: hackrf_transfer: undefined symbol: hackrf_enable_tx_flush
You have a hackrf_transfer program that was built from a recent release, but the libhackrf library on your system is an old version, so hackrf_transfer is trying to use functions that aren't available.
You need to install the corresponding libhackrf, from the same release that you got hackrf_transfer.
The second problem you have is:
argument error: sample rate hz should be greater than or equal to 2000000 Hz/2.00 MHz
It's not a good idea to use sample rates less than 2MHz with HackRF, because the narrowest baseband filter available on the hardware is 1.75MHz wide.
You have IQ data with a 250kHz sampling rate that you'd like to transmit. The best thing to do would be to go back to how you generated that data, and regenerate it with a 2MHz sample rate or higher.
If that's not possible for whatever reason, then you can use an interpolating resampler in GNU Radio or some other tool, to interpolate the data to a 2MHz sample rate or higher.
straithe
Have you read the HackRF documentation?
no
What outcome were you hoping for?
hackrf_transfer -f 96900000 -t ./against_wind.C16 -a 1 hackrf_transfer: symbol lookup error: hackrf_transfer: undefined symbol: hackrf_enable_tx_flush
hackrf_transfer -s 250000 -f 98900000 -t against_wind.C16 argument error: sample rate hz should be greater than or equal to 2000000 Hz/2.00 MHz
What outcome actually happened?
I tried the following commands and got the following errors. I'm not certain of the cause. hackrf_transfer -f 96900000 -t ./against_wind.C16 -a 1 hackrf_transfer: symbol lookup error: hackrf_transfer: undefined symbol: hackrf_enable_tx_flush
hackrf_transfer -s 250000 -f 98900000 -t against_wind.C16 argument error: sample rate hz should be greater than or equal to 2000000 Hz/2.00 MHz
What operating systems are you seeing the problem on?
Raspberry Pi OS (Legacy) Lite Release date: July 4th 2024 System: 64-bit Kernel version: 6.1 Debian version: 11 (bullseye)
What is the output of
hackrf_info?libhackrf version: unknown 0.5 Found HackRF Index: 0 Serial Number: censored Board ID Number: 2 (HackRF One) Firmware Version: local-de927bd (API: 1.03) Part ID Number: 0xa000cb3c 0x00584763
Are you using any third-party software?
NO
Are you using any third-party hardware?
NO