Hi,
I use an MSP430G2452 to drive a LCD 16x2. Every thing work fine during the test, using the UART communication from the LaunchPad or from a USB serial communication cable using CoolTerm.
Put the 2452 on a bread board test it with USB serial cable, everthing work. But when I connect to the Raspberry TX UART pin, the Communication seems to fail.
If I connect the Raspberry TX with the USB cable i get the right string). But when i use for exemple : "sc;" > /dev/ttyAMA0 ; to clear the screen nothing append.
With the C++ software which normally display informations, the screen cleans but nothing is displayer....
---- EDIT ---
My commands are strings: "<2 char command><value>; if I had a semi column at the start it's working. I thing that i got some characters are transmitted between my commands. With C++ I use '\n' to flush the strings.
"sudo echo ";sc;" > /dev/ttyAMA0 ;" does work
"sudo echo "sc;" > /dev/ttyAMA0 ;" does not...