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| author | Andrey Alekseenko <al42and@gmail.com> | 2015-01-06 15:32:10 +0300 |
|---|---|---|
| committer | Andrey Alekseenko <al42and@gmail.com> | 2015-01-06 15:32:10 +0300 |
| commit | 97f6da592df6b44732be885dadfdd1e5a1e48872 (patch) | |
| tree | 93a505cff9b7c7d8e1f18ff8b1cfcdc3164223de | |
| parent | 9d7c140ae76ed922146c06474cb1220ea5bcb613 (diff) | |
| download | novena-guide-97f6da592df6b44732be885dadfdd1e5a1e48872.tar.gz novena-guide-97f6da592df6b44732be885dadfdd1e5a1e48872.zip | |
Added bash script to toggle LEDs on GPBB
Because blinking LEDs is the first thing everyone does after getting
anything with GPIO.
| -rw-r--r-- | fpga-hacking.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fpga-hacking.rst b/fpga-hacking.rst index 2f2e8d3..edebb30 100644 --- a/fpga-hacking.rst +++ b/fpga-hacking.rst @@ -20,3 +20,13 @@ Run these commands from a Novena with the GPBB attached:: sudo ./configure.sh novena_fpga.bit sudo ./novena-gpbb -v +Simple test --- toggle four on-board LEDs, connected to I/O port B, pins 0--3:: + + sudo ./novena-gpbb -oeb 1 # set port B to drive + for BIT in 0 1 2 3; do + sudo ./novena-gpbb -p_set b $BIT # Set pin + sleep 1 + done + sudo ./novena-gpbb -p b 00 # Write 0x00, i.e. reset all pins + sudo ./novena-gpbb -oeb 0 # return port B to tristate mode + |