Alexander Lehner <lehner at edv-buero-lehner.de> writes: > root at om-gta02 ~ # cat /dev/ttySAC1 > root at om-gta02 ~ # If fso reads from /dev/ttySAC1 you can not read the same device with cat at the same time and expect it to work. Make sure that only cat reads it and then powercycle the chip.