From 42a07ea73dae20516701401765ca7cf743500a4b Mon Sep 17 00:00:00 2001 From: Oleksandr Suvorov Date: Thu, 6 Aug 2020 16:35:29 +0300 Subject: apalis-imx8: udev: add symlink to adc raw data Create symlinks for each supported by Apalis iMX8 ADC channels, standardizing names as apalis-adcX, according to the Apalis signal names table. Related-to: ELB-2839 Signed-off-by: Oleksandr Suvorov (cherry picked from commit a98861ebc9d2a26f458a57f674b53cb81405da64) --- recipes-core/udev/files/apalis-imx8/toradex-adc.sh | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100755 recipes-core/udev/files/apalis-imx8/toradex-adc.sh (limited to 'recipes-core/udev/files/apalis-imx8/toradex-adc.sh') diff --git a/recipes-core/udev/files/apalis-imx8/toradex-adc.sh b/recipes-core/udev/files/apalis-imx8/toradex-adc.sh new file mode 100755 index 0000000..fdc5365 --- /dev/null +++ b/recipes-core/udev/files/apalis-imx8/toradex-adc.sh @@ -0,0 +1,21 @@ +#!/usr/bin/env sh +# +# Called from udev. Compatible to apalis-imx8. +# +# Create/remove symlinks to/from the files with raw ain data. + +# Map the ADC lines: +# apalis-adc{0..3} -> DMA.ADC.IN{0,1,2,3} +LINES=4 +START=0 + +if [ "$ACTION" = "add" ]; then + for idx in `seq 0 $((LINES-1))`; do + ln -s "/sys$DEVPATH/in_voltage$((START+idx))_raw" /dev/apalis-ain$idx + done +elif [ "$ACTION" = "remove" ]; then + for idx in `seq 0 $((LINES-1))`; do + rm -f /dev/apalis-ain$idx + done +fi + -- cgit v1.2.3