Minor tweaks to PI.py to get working seamlessly with web server - tested and working as expected. Most files touched because permissions were modified to allow PI.py to run on startup. Everything should be ready now.

1 files changed, 64 insertions, 0 deletions

diff --git a/PI.py b/PI.py
new file mode 100755
index 0000000..2157cbd
--- /dev/null
+++ b/PI.py
@@ -0,0 +1,64 @@
+#handle a POST request
+from flask import Flask, render_template, request, url_for, jsonify
+import subprocess
+import os
+import RPi.GPIO as GPIO
+app = Flask(__name__)
+
+UPLOAD_DESTINATION = "Uploads/"
+SYSTEM_DESTINATION = "System/"
+RESULTS_DESTINATION = "Results/"
+
+INITIALIZE_SYSTEM = "initialize_system.py"
+
+@app.route('/')
+def home():
+    return "ANDI'S PIE"
+
+@app.route('/tests/endpoint', methods=['POST'])
+def my_test_endpoint():
+    # Receive post
+    input_json = request.get_json(force=True) 
+
+    # Put file content into a file caled upload.py
+    filename=input_json['filename'].encode("ascii")
+    file_content=input_json['file_content'].encode("ascii")
+    filename=input_json['filename']
+    file_content=input_json['file_content']
+    upload = open(UPLOAD_DESTINATION + filename, "w+")
+    upload.write(file_content)
+    upload.close()
+
+    # Run python script
+    process = subprocess.Popen(["python3", UPLOAD_DESTINATION + filename])
+    try:
+        process.wait()
+        print("Program exited normally!\n")
+    except:
+        print("Exception occurred running program!\n")
+        process.terminate()
+    finally:
+        GPIO.cleanup()
+
+    # Get results file
+    results_filename = filename.split(".")[0]
+    results_filename = results_filename + "_results.csv"
+    with open(RESULTS_DESTINATION + results_filename, 'r') as results:
+        results_content = results.read()
+        results.close()
+    
+    # Remove test file and results file now that were done with them
+    os.remove(UPLOAD_DESTINATION + filename)
+    os.remove(RESULTS_DESTINATION + results_filename)
+
+    # Return results file content
+    dictToReturn = {'results_filename':results_filename, 'results_content':results_content}
+    return jsonify(dictToReturn)
+
+# This will run on system bootup.
+if __name__ == '__main__':
+    os.chdir('/home/pi/pendulum')
+    # Initialize the system before accepting any files.
+    subprocess.call(["python3", SYSTEM_DESTINATION + INITIALIZE_SYSTEM])
+    # Run the web client to start receiving files.
+    app.run(host="192.168.1.10", port=8000)