detailed-build-instructions.txt

build rapsberry pi ble to mqtt
202012161409


sudo dd bs=1m if=2020-08-20-raspios-buster-armhf-full.img of=/dev/rdisk6 conv=sync

touch /Volumes/boot/ssh

vi /Volumes/boot/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=US

network={
    ssid="xxx"
    psk="yyy"
    key_mgmt=WPA-PSK
}

diskutil eject /dev/disk6

boot the pi
find on network

sudo raspi-config
# wait for network
# consistent network names


edit /etc/dhcpcd.conf
interface eth0
static ip_address=192.168.x.y/24
static routers=192.168.x.x
static domain_name_servers=1.1.1.1

interface enxb827ebczzzzz
static ip_address=192.168.x.y/24
static routers=192.168.x.x
static domain_name_servers=1.1.1.1

removed /etc/wpa_supplicant.conf

sudo apt-get update
sudo apt-get full-upgrade
reboot 
sudo apt-get install tmux

fix login warning:
/etc/profile.d/sshpwd.sh
/etc/xdg/lxsession/LXDE-pi/sshpwd.sh

mkdir ~/.ssh
cat .ssh/id_rsa.pub | ssh pi@192.168.x.y 'cat >> .ssh/authorized_keys'

create .vimrc for pi and root

sudo mkdir  /media/pi
sudo mkdir  /media/pi/nas

vi /home/pi/.NASCREDS

user=xxx
password=yyy

in /etc/fstab

//192.168.x.y/nas /media/pi/nas cifs credentials=/home/pi/.NASCREDS,uid=pi,gid=pi,vers=1.0,comment=x-systemd.automount 0 0

# test it
sudo mount -a

mkdir ~/ble-sensors
cd ~/ble-sensors
git clone https://github.com/deepcoder/bluetooth-temperature-sensors.git
sudo apt-get install libbluetooth-dev
git clone https://github.com/eclipse/paho.mqtt.c.git
cd paho.mqtt.c
make
sudo make install
cd ..
cd bluetooth-temperature-sensors
gcc -o ble_sensor_mqtt_pub ble_sensor_mqtt_pub.c -lbluetooth  -l paho-mqtt3c
cp ble_sensor_mqtt_pub ..
cd ..
create ble_sensor_mqtt_pub.csv
create hack_ble.sh
=====
#!/bin/bash

trap "echo Exited!; exit;" SIGINT SIGTERM

if [ $EUID -ne 0 ]; then
    echo "This script should be run as root." > /dev/stderr
    exit 1
fi

while :
do
    echo 'Running ble_sensor_mqtt_pub'
    date '+%Y%m%d%H%M%S'
	echo "Press [CTRL+C] to stop.."
    cd /home/pi/ble-sensors
	/home/pi/ble-sensors/ble_sensor_mqtt_pub 0 1 200 500
done
=====
chmod +x hack_ble.sh

sudo vi /etc/rc.local
=====
#!/bin/bash

########!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
  printf "My IP address is %s\n" "$_IP"
fi

# wait for networks to start

STATE="error";

while [  $STATE == "error" ]; do
    #do a ping and check that its not a default message or change to grep for something else
    STATE=$(ping -q -w 1 -c 1 `ip r | grep default | cut -d ' ' -f 3` > /dev/null && echo ok || echo error)

    #sleep for 2 seconds and try again
    sleep 2
done

su pi -c 'tmux new-session -d -s ble'
su pi -c 'tmux send-keys sudo Space /home/pi/ble-sensors/hack_ble.sh C-m'


exit 0
=====
hciconfig
hci0:	Type: Primary  Bus: UART
	BD Address: cc:bb:aa:zz:yy:xx  ACL MTU: 1021:8  SCO MTU: 64:1
	UP RUNNING
	RX bytes:1476 acl:0 sco:0 events:90 errors:0
	TX bytes:3274 acl:0 sco:0 commands:90 errors:0

tmux attach -t ble