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bluez-init: skip BT power GPIO toggling if undefined 

The script toggles the BT power GPIO regardless of the value being
undefined.
Check that the GPIO is defined before trying to toggle it.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>
This commit is contained in:
Hector Palacios 2015-12-28 12:25:40 +01:00
parent 84e152f1ca
commit ee27c907d1
1 changed files with 13 additions and 9 deletions
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22
meta-digi-dey/recipes-connectivity/bluez/bluez5/bluez-init
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@ -70,15 +70,19 @@ bt_init() {
RETRIES="5"
while [ "${RETRIES}" -gt "0" ]; do
hciattach ttyBt ath3k 4000000 1>/dev/null && break
#
# If hciattach fails try to recover it by toggling the GPIO
#
BT_PWR_L="/sys/class/gpio/gpio${BT_PWR_GPIO_NR}"
[ -d "${BT_PWR_L}" ] || printf "%s" ${BT_PWR_GPIO_NR} > /sys/class/gpio/export
printf out > ${BT_PWR_L}/direction && sleep .2
printf 0 > ${BT_PWR_L}/value && sleep .2
printf 1 > ${BT_PWR_L}/value && sleep .2
[ -d "${BT_PWR_L}" ] && printf "%s" ${BT_PWR_GPIO_NR} > /sys/class/gpio/unexport
if [ -n "${BT_PWR_GPIO_NR}" ]; then
#
# If hciattach fails try to recover it by toggling the BT power GPIO
#
BT_PWR_L="/sys/class/gpio/gpio${BT_PWR_GPIO_NR}"
[ -d "${BT_PWR_L}" ] || printf "%s" ${BT_PWR_GPIO_NR} > /sys/class/gpio/export
printf out > ${BT_PWR_L}/direction && sleep .2
printf 0 > ${BT_PWR_L}/value && sleep .2
printf 1 > ${BT_PWR_L}/value && sleep .2
[ -d "${BT_PWR_L}" ] && printf "%s" ${BT_PWR_GPIO_NR} > /sys/class/gpio/unexport
else
sleep .5
fi
RETRIES="$((RETRIES - 1))"
done
if [ "${RETRIES}" -eq "0" ]; then