| #!/bin/bash |
| # USAGE: jevois-cmd [-d /dev/ttyACMX] command |
| # |
| # Send a command to a connected JeVois camera using the serial-over-USB port |
| # |
| # Tip: If things appear garbled in some way, maybe your TTY settings got messed up. Run screen /dev/ttyACM0 115200 to |
| # reset to the expected state. |
| # |
| # You may need to install: sudo apt install python-serial |
| |
| ttydev="/dev/ttyACM0" |
| if [ "X$1" = "X-d" ]; then ttydev=$2; shift 2; fi |
| |
| if [ ! -c "$ttydev" ]; then echo "Cannot access $ttydev -- is JeVois plugged in? -- ABORT"; exit 1; fi |
| |
| # Set the tty flags: |
| sudo stty -F "${ttydev}" sane raw igncr clocal cread -echo |
| |
| # First read any accumulated junk in the serial buffers: |
| while true; do |
| sudo bash -c "read -s -t 0.05 < \"${ttydev}\"" |
| if [ $? -ne 0 ]; then break; fi |
| done |
| |
| # Make a python program: |
| prog="import serial |
| ser = serial.Serial('$ttydev', 115200, timeout=1) |
| ser.write('$*\n') |
| nothing=1 |
| out = '' |
| while nothing or ser.inWaiting() > 0: |
| out += ser.read(1) |
| nothing=0 |
| if out != '': |
| print out, |
| " |
| |
| # Send the command: |
| sudo python2.7 -c "$prog" |