Hi, What I’m trying to do is to establish a serial communication between the guest and host to streamg some data.
The command that I use to launch qemu goes as fallow: sudo qemu-system-arm -M beaglexm -m 1024 -sd ./test.img -clock unix -serial stdio -device usb-mouse -device usb-kbd –serial pts when qemu launches I get this message: char device redirected to /dev/pts/1 (label serial1) and then the guest boots. As this far everything is fine. The problem is when I try to use on /dev/ttyS0 in the guest to start communicationg with the host I get Input/output error. On the host I use minicom and open /dev/pts/1 On the gest I use: open tty: stty -F /dev/ttyS0 9600 cs8 cread clocal and it returns: stty: /dev/ttyS0: Input/output error write: echo “test” > /dev/ttyS0 and it returns: -bash: echo: write error: Input/output error Read: cat /dev/ttyS0 and it returns: cat: read error: Input/output error Could someone help me with this? Thanks alot. Francisco
