From acafbac4b33a5273e6125cf2fcdf118f70cd23ec Mon Sep 17 00:00:00 2001 From: Mathias Kresin Date: Mon, 15 Jan 2018 01:23:36 +0100 Subject: [PATCH] base-files: gpio switch: check if direction can be set Obviously not all GPIO controller allow to change the direction. The issue is around since the beginning of the script but only due to the recent changes error messages are more visible. Add a check if a change of the direction is supported by the GPIO controller and fallback to setting only the value if not. Fixes: FS#1271 Signed-off-by: Mathias Kresin --- package/base-files/Makefile | 2 +- package/base-files/files/etc/init.d/gpio_switch | 11 +++++++++-- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/package/base-files/Makefile b/package/base-files/Makefile index 0055474166..ed34480948 100644 --- a/package/base-files/Makefile +++ b/package/base-files/Makefile @@ -12,7 +12,7 @@ include $(INCLUDE_DIR)/version.mk include $(INCLUDE_DIR)/feeds.mk PKG_NAME:=base-files -PKG_RELEASE:=183 +PKG_RELEASE:=184 PKG_FLAGS:=nonshared PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/ diff --git a/package/base-files/files/etc/init.d/gpio_switch b/package/base-files/files/etc/init.d/gpio_switch index 32c142f110..6b2dcdce41 100755 --- a/package/base-files/files/etc/init.d/gpio_switch +++ b/package/base-files/files/etc/init.d/gpio_switch @@ -23,8 +23,15 @@ load_gpio_switch() # we need to wait a bit until the GPIO appears [ -d "$gpio_path" ] || sleep 1 } - # set the pin to output with high or low pin value - { [ "$value" = "0" ] && echo "low" || echo "high"; } >"$gpio_path/direction" + + # direction attribute only exists if the kernel supports changing the + # direction of a GPIO + if [ -e "${gpio_path}/direction" ]; then + # set the pin to output with high or low pin value + { [ "$value" = "0" ] && echo "low" || echo "high"; } >"$gpio_path/direction" + else + { [ "$value" = "0" ] && echo "0" || echo "1"; } >"$gpio_path/value" + fi } service_triggers() -- 2.25.1