everything seems to work fine but I cant input anything
Author: isaacdavidson1Created May 23, 2023Updated Dec 13, 2023
My os: Ubuntu 22
Problem: I cant input anything, and when I type in characters to the console, nothing is echoed.
I tried running the kernel in qemu, and on my rpi4, but neither worked.
Example output that seems to be working fine from 09:
[ 0.208975] mingo version 0.9.0
[ 0.209061] Booting on: Raspberry Pi 4
[ 0.209462] Current privilege level: EL1
[ 0.209938] Exception handling state:
[ 0.210382] Debug: Masked
[ 0.210772] SError: Masked
[ 0.211162] IRQ: Masked
[ 0.211552] FIQ: Masked
[ 0.211942] Architectural timer resolution: 18 ns
[ 0.212516] Drivers loaded:
[ 0.212853] 1. BCM PL011 UART
[ 0.213275] 2. BCM GPIO
[ 0.213633] Timer test, spinning for 1 second
[ 1.214163] Echoing input now
I thought maybe it was just my terminal so I wrote some rust to try sending bytes to /dev/ttyUSB0 where the rpi4 was connected:
//using serialport 3.0.0
fn write_to_serial_device(input: &str) {
let port_name = "/dev/ttyUSB0";
let mut settings: SerialPortSettings = Default::default();
settings.timeout = Duration::from_millis(100);
settings.baud_rate = 9600;
match serialport::open_with_settings(port_name, &settings) {
Ok(mut port) => {
if let Err(e) = writeln!(port, "{}", input) {
eprintln!("Error writing to serial port {}: {}", port_name, e);
} else {
println!("Successfully wrote to serial port {}", port_name);
}
}
Err(e) => {
eprintln!("Error opening serial port {}: {}", port_name, e);
}
}
}that code didnt report any errors when executing, but still nothing was echoed in the console after running it.
fair warning, It is entirely possible that I am just misunderstanding something or making a dumb mistake because I have never worked with embedded rust before this so let me know if I shouldn't have opened this issue :))
Source: rust-embedded/rust-raspberrypi-OS-tutorials