From 260b89ecd1de83325c2b22b621af62ca37cb16a9 Mon Sep 17 00:00:00 2001 From: Leon Anavi Date: Wed, 24 Jun 2020 15:03:38 +0300 Subject: docs/extra-build-config.md: Infrared Add instructions how to use variable ENABLE_IR for infrared support, for example with LIRC. Signed-off-by: Leon Anavi --- docs/extra-build-config.md | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/docs/extra-build-config.md b/docs/extra-build-config.md index 843247a..d92cf4e 100644 --- a/docs/extra-build-config.md +++ b/docs/extra-build-config.md @@ -261,6 +261,18 @@ In order to use Pican2 CAN module, set the following variables: See: +## Enable infrared + +Users who want to enable infrared support, for example for using LIRC (Linux +Infrared Remote Control), have to explicitly set in local.conf: + + ENABLE_IR = "1" + +This will add device tree overlays gpio-ir and gpio-ir-tx to config.txt. +Appropriate kernel modules will be also included in the image. By default the +GPIO pin for gpio-ir is set to 18 and the pin for gpio-ir-tx is 17. Both pins +can be easily changed by modifying variables `GPIO_IR` and `GPIO_IR_TX`. + ## Manual additions to config.txt The `RPI_EXTRA_CONFIG` variable can be used to manually add additional lines to -- cgit v1.2.3-54-g00ecf