Stand Präsentation 13.10

README noch unvollständig

README.md

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+Fortschritt Impfzertifikat, live vom PI 4 mit PI OS lite
+
+In manchen Dokumenten ist ein Personal Access Token zu lesen. Deshalb kann dieses Repository in dieser Form vorerst(!) nicht veröffentlicht werden.
+Eine öffentliche Version wird folgen!
+
+## Ausrüstung
+
+RasPI 4, PI Camera v2, Ethernet, Monitor, Tastatur
+Image: PI OS Lite via [Raspberry Pi Imager](https://www.raspberrypi.com/software/)
+Auf dem PI: Alles als Root-User durchführen
+
+# Konfigschritte
+
+## notwendigerweise bekannte Git-Befehle
+
+### Initial
+
+``` sh
+- git init
+- git checkout branch
+- git clone
+- git pull
+```
+
+```
+git config --global user.name "Jonathan"
+git config --global user.email "26322754+nukerxy@users.noreply.github.com"
+git push
+```
+
+wenn schon ein commit mit falschen Daten vorhanden:
+
+```
+git commit --amend --reset-author
+```
+### Aktuellen Stand speichern
+
+``` sh
+git checkout branch
+<Make some changes>
+git add .
+git commit -m "message"
+git push [-f]
+```
+### Sonstige (Zeilen einzeln lesen)
+
+```
+git status
+git reset
+git checkout -- file.extension
+git push --set-upstream origin branchname
+history > history.txt
+```
+
+## Aktualisierung und Tools holen
+
+``` sh
+apt update
+apt upgrade
+apt install python3-pip git -y
+```
+
+## Installation Repositories
+
+```sh
+cd /home/pi
+git clone https://github.com/panzi/verify-ehc
+cd /home/pi/verify-ehc
+pip3 install -r requirements.txt
+cd /home/pi/
+git clone https://TOKEN@github.com/nukerxy/emb-impf.git
+pip3 install opencv-python
+```
+(oder apt install python3-opencv) ?
+
+## Dependencies nachinstallieren
+
+``` sh
+apt install libqt4-test python3-sip python3-pyqt5 libqtgui4 libjasper-dev libatlas-base-dev
+```
+und noch dazu:
+
+```
+pip3 install opencv-contrib-python==4.1.0.25
+apt install libzbar0
+```
+## Kamera einrichten
+
+``` sh
+raspi-config
+```
+In GUI Kamera aktivieren --> Welche Änderung in File TODO
+
+ggf ist
+``` sh
+modprobe bcm2835_v4l2 / modprobe bcm2835-v4l2
+```
+nötig
+
+Es gab eine komische Fehlermeldung bei `modprobe bcm2835_v4l2`
+```sh
+modprobe: ERROR: ../libkmod/libkomd.c:586 kmod_search_moddep() could not open moddep file '/lib/modules/5.10.17-71+/modules.dep.bin'
+modprobe: FATAL: MOdule bcm3825_v4l2 not found in directory /lib/modules/5.10.17-v71+
+```
+
+daher wurde
+``` sh
+apt install --reinstall raspberrypi-bootloader
+apt install --reinstall raspberrypi-kernel
+```
+ausgeführt, das hat es soweit repariert.
+
+## Autostart
+
+``` sh
+cd /etc/init.d
+nano impfe.sh
+chmod 777 impfe.sh
+sudo update-rc.d impfe.sh defaults
+```

barcodescanner.py

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+#!/usr/bin/env python3
+import cv2
+import numpy as np
+import sys
+import time
+import os
+from gpiozero import LED
+tstart=time.time()
+qrDecoder = cv2.QRCodeDetector()
+cap = cv2.VideoCapture(0)
+
+#on: program is running
+#off: qr_detected
+led_running_qr_detected = LED(17) # White, status
+
+#blinking 5 times rapidly: fail, output==[]
+led_detection_success_fail = LED(27) #yellow
+print("init")
+count=0
+while True:
+    if count<10:
+         led_running_qr_detected.off()
+    elif 10<=count<20:
+         led_running_qr_detected.on()
+    else:
+         count=0
+    count=count+1
+    time.sleep(0.05)
+    led_detection_success_fail.off()
+    readsuccess, img = cap.read()
+#    print("read image")
+    detectionsuccess=False
+    #tbeforedetect=time.time()
+
+    if readsuccess:
+        detectionsuccess,points = qrDecoder.detect(img)
+        tafterdetect=time.time()
+    else:
+        print("read failed")
+        for i in range(0,10):
+              led_detection_success_fail.on()
+              led_running_qr_detected.off()
+              time.sleep(0.2)
+              led_detection_success_fail.off()
+              led_running_qr_detected.on()
+              time.sleep(0.2)
+    if detectionsuccess:
+        led_running_qr_detected.on()
+        print("detected")
+        print("time since start: \n",tafterdetect-tstart)
+        cv2.imwrite("qr_gelesen.jpeg", img)
+        tafterwrite=time.time()
+       #print("start:",tbeforedetect-tstart,"detect:",tafterdetect-tbeforedetect,"write",tafterwrite-tafterdetect)
+       #time.sleep(1)
+       # manually run first: run ./verify_ehc.py --certs-from AT,DE --save-certs trust_list.cbor
+       # check if trust_list.cbor exists TODO
+        commandstream=os.popen("cd /home/pi/verify-ehc/ && ./verify_ehc.py --image ../emb-impf/qr_gelesen.jpeg --certs-file trust_list.cbor")
+        output=commandstream.readlines() # readlines has \n or something
+        if output==[]: #yellow  LED starts blinking
+              for i in range(0,4):
+                  led_detection_success_fail.on()
+                  time.sleep(0.1)
+                  led_detection_success_fail.off()
+                  time.sleep(0.1)
+              print("Error in barcodescanner.py: could not process qr code, try again!")
+             # cv2.imwrite("latest_qr_process_error_"+str(tafterdetect-tstart)+".jpeg",img)
+              cv2.imwrite("latest_qr_process_error.jpeg",img)
+        else:
+             #led_detection_success_fail.on()
+              time.sleep(2)
+             # print("output",output)
+        print("completed")
+      # print(commandstream.readlines())
+        commandstream.close()
+       # TODO clean up this output
+#      time.sleep(3)
+    #else:
+        #print("QR Code not detected")
+        #time.sleep(0.01)
+        #For debugging
+        #cv2.imwrite("qr_notfound.jpeg",img)
+#    cap.release()
+

impfe.sh

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+#!/bin/bash
+### BEGIN INIT INFO
+# Default-Start: 1 2 3 4 5
+# Default-Stop: 0 6
+### END INIT INFO
+. /lib/lsb/init-functions
+
+start(){
+bash -c "cd /home/pi/emb-impf && ./barcodescanner.py"
+}
+
+stop(){
+    bash -c "killall python3"
+}
+
+case "$1" in
+	start)
+		start
+		;;
+	stop)
+		stop
+		;;
+	*)
+	   	exit 1
+esac
+
+exit 0