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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 return
fi fi
hciattach -t5 /dev/ttyBt any 115200 flow nosleep && \ # If there is a hciattach process running, just do nothing
hciconfig ${HCI_IFACE} up && \ pidof hciattach > /dev/null && log "Bluetooth already activated" && return
sleep 0.2 && \
set_btaddr && \ # If port speed is 3M, assume that FW has been modified to run at that speed
hcitool -i ${HCI_IFACE} cmd 0x3f 0x0009 0xc0 0xc6 0x2d 0x00 && \ if [ "$(stty -F /dev/ttyBt speed)" != "3000000" ]; then
sleep 0.2 && \ hciattach -t5 /dev/ttyBt any 115200 flow nosleep && \
killall hciattach && \ hciconfig ${HCI_IFACE} up && \
sleep 0.2 && \ 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 && \ hciattach -t5 /dev/ttyBt any -s 3000000 3000000 flow && \
hciconfig ${HCI_IFACE} up && \ hciconfig ${HCI_IFACE} up && \
sleep 0.2 && \ sleep 0.2 && \
@ -65,12 +73,10 @@ bluetooth_start() {
bluetooth_stop() { bluetooth_stop() {
if [ -e "/sys/class/bluetooth/${HCI_IFACE}" ]; then if [ -e "/sys/class/bluetooth/${HCI_IFACE}" ]; then
# hci reset command killall hciattach > /dev/null
hcitool -i ${HCI_IFACE} cmd 0x03 0x0003 sleep 1
sleep 0.2 # send a raw hci reset to set the chip in a good state
# set baudrate to 115200 echo -e -n \\x01\\x03\\x0c\\x00 > /dev/ttyBt
hcitool -i ${HCI_IFACE} cmd 0x3f 0x0009 0x00 0xc2 0x01 0x00
killall hciattach
fi fi
} }