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bluez5-init: ccimx93: modify script to support suspend/resume 

The BT chip for the ccimx93 cannot be turned off, nor can it be re-uploaded.
Therefore, we need to set some conditions to assume that it is going to be
attached correctly. The changes in this script take care of that.
Upon the first attachment, the rate is set to 3M, and future uses will always
be done at this rate. If, for any reason, it was not stopped and the chip is
already attached, do nothing.

https://onedigi.atlassian.net/browse/DEL-8464

Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
This commit is contained in:
Isaac Hermida 2023-04-14 14:32:57 +02:00
parent ac1e4633fb
commit 06e84d1b7b
1 changed files with 20 additions and 14 deletions
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34
meta-digi-dey/recipes-connectivity/bluez/bluez5-init/ccimx93/bluetooth-init
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@ -45,14 +45,22 @@ bluetooth_start() {
return
fi
hciattach -t5 /dev/ttyBt any 115200 flow nosleep && \
hciconfig ${HCI_IFACE} up && \
sleep 0.2 && \
set_btaddr && \
hcitool -i ${HCI_IFACE} cmd 0x3f 0x0009 0xc0 0xc6 0x2d 0x00 && \
sleep 0.2 && \
killall hciattach && \
sleep 0.2 && \
# If there is a hciattach process running, just do nothing
pidof hciattach > /dev/null && log "Bluetooth already activated" && return
# If port speed is 3M, assume that FW has been modified to run at that speed
if [ "$(stty -F /dev/ttyBt speed)" != "3000000" ]; then
hciattach -t5 /dev/ttyBt any 115200 flow nosleep && \
hciconfig ${HCI_IFACE} up && \
sleep 0.2 && \
set_btaddr && \
# Change rate to 3M using a custom vendor command
hcitool -i ${HCI_IFACE} cmd 0x3f 0x0009 0xc0 0xc6 0x2d 0x00 && \
sleep 0.2 && \
killall hciattach && \
sleep 0.2
fi
hciattach -t5 /dev/ttyBt any -s 3000000 3000000 flow && \
hciconfig ${HCI_IFACE} up && \
sleep 0.2 && \
@ -65,12 +73,10 @@ bluetooth_start() {
bluetooth_stop() {
if [ -e "/sys/class/bluetooth/${HCI_IFACE}" ]; then
# hci reset command
hcitool -i ${HCI_IFACE} cmd 0x03 0x0003
sleep 0.2
# set baudrate to 115200
hcitool -i ${HCI_IFACE} cmd 0x3f 0x0009 0x00 0xc2 0x01 0x00
killall hciattach
killall hciattach > /dev/null
sleep 1
# send a raw hci reset to set the chip in a good state
echo -e -n \\x01\\x03\\x0c\\x00 > /dev/ttyBt
fi
}