From 0be8a1ddb505354f6ab028f2af359674211c0273 Mon Sep 17 00:00:00 2001 From: Scott Murray Date: Sun, 29 Dec 2019 18:36:48 -0500 Subject: Add virtual sllin support and LIN bridging to CAN for demos To enable seeing the steering wheel LIN messages on the cluster board for the planned CES demo, a systemd unit that wraps the use of candump in bridging mode is added when the agl-cluster-support feature is enabled. To make sure that the sllin0 interface is always available for testing without the specific demo LIN hardware, a vcan interface is set up as sllin0 when the ttyUSB0 device representing the serial adapter for the LIN transceiver is not present. Since this virtual sllin0 interface is very useful for general testing of the steering wheel event support up through the low-can and signal-composer stack, it has not been hidden behind agl-cluster-demo-support. Bug-AGL: SPEC-3049 Change-Id: I527763176ce0f8b4d50cc472ec2343a6596286e2 Signed-off-by: Scott Murray --- recipes-kernel/sllin/files/start_lin_demo.sh | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) mode change 100644 => 100755 recipes-kernel/sllin/files/start_lin_demo.sh (limited to 'recipes-kernel/sllin/files/start_lin_demo.sh') diff --git a/recipes-kernel/sllin/files/start_lin_demo.sh b/recipes-kernel/sllin/files/start_lin_demo.sh old mode 100644 new mode 100755 index 4fcfcc6d2..26f64c0a1 --- a/recipes-kernel/sllin/files/start_lin_demo.sh +++ b/recipes-kernel/sllin/files/start_lin_demo.sh @@ -1,10 +1,14 @@ #!/bin/sh # Attach serial LIN->CAN bridge and set up LIN polling -sleep 1 -/usr/bin/lin_config -c /etc/lin_config.conf -a sllin:/dev/ttyUSB0 -pidof lin_config > /var/run/lin_config.pid -sleep 1 +if [ -c /dev/ttyUSB0 ]; then + sleep 1 + /usr/bin/lin_config -c /etc/lin_config.conf -a sllin:/dev/ttyUSB0 + pidof lin_config > /var/run/lin_config.pid + sleep 1 +else + ip link add dev sllin0 type vcan +fi ip link set sllin0 up # Initialize HVAC controller -- cgit 1.2.3-korg