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from http.server import SimpleHTTPRequestHandler, HTTPServer
import time
import os
import json
from ohmpi import OhmPi
import threading
import pandas as pd
import shutil
hostName = "raspberrypi.local" # works for AP-STA
#hostName = "192.168.50.1" # fixed IP in AP-STA mode
#hostName = "0.0.0.0" # for AP mode (not AP-STA)
serverPort = 8080
# https://gist.github.com/MichaelCurrie/19394abc19abd0de4473b595c0e37a3a
with open('ohmpi_param.json') as json_file:
pardict = json.load(json_file)
ohmpi = OhmPi(pardict, sequence='breadboard.txt')
#ohmpi = OhmPi(pardict, sequence='dd16s0no8.txt')
class MyServer(SimpleHTTPRequestHandler):
# because we use SimpleHTTPRequestHandler, we do not need to implement
# the do_GET() method (if we use the BaseHTTPRequestHandler, we would need to)
# def do_GET(self):
# # normal get for wepages (not so secure!)
# print(self.command)
# print(self.headers)
# print(self.request)
# self.send_response(200)
# self.send_header("Content-type", "text/html")
# self.end_headers()
# with open(os.path.join('.', self.path[1:]), 'r') as f:
# self.wfile.write(bytes(f.read(), "utf-8"))
def do_POST(self):
global ohmpiThread, status, run
dic = json.loads(self.rfile.read(int(self.headers['Content-Length'])))
rdic = {}
if dic['command'] == 'start':
ohmpi.measure()
elif dic['command'] == 'stop':
ohmpi.stop()
elif dic['command'] == 'getData':
# get all .csv file in data folder
fnames = [fname for fname in os.listdir('data/') if fname[-4:] == '.csv']
ddic = {}
for fname in fnames:
if (fname.replace('.csv', '') not in dic['surveyNames']
and fname != 'readme.txt'
and '_rs' not in fname):
df = pd.read_csv('data/' + fname)
ddic[fname.replace('.csv', '')] = {
'a': df['A'].tolist(),
'b': df['B'].tolist(),
'm': df['M'].tolist(),
'n': df['N'].tolist(),
'rho': df['R [ohm]'].tolist(),
}
rdic['data'] = ddic
elif dic['command'] == 'removeData':
shutil.rmtree('data')
os.mkdir('data')
elif dic['command'] == 'setConfig':
ohmpi.stop()
cdic = dic['config']
ohmpi.pardict['nb_electrodes'] = int(cdic['nbElectrodes'])
ohmpi.pardict['injection_duration'] = float(cdic['injectionDuration'])
ohmpi.pardict['nbr_meas'] = int(cdic['nbMeasurements'])
ohmpi.pardict['nb_stack'] = int(cdic['nbStack'])
ohmpi.pardict['sequence_delay'] = int(cdic['sequenceDelay'])
if cdic['sequence'] != '':
with open('sequence.txt', 'w') as f:
f.write(cdic['sequence'])
ohmpi.read_quad('sequence.txt')
print('new sequence set.')
print('setConfig', ohmpi.pardict)
elif dic['command'] == 'invert':
pass
elif dic['command'] == 'getResults':
pass
elif dic['command'] == 'rsCheck':
ohmpi.rs_check()
fnames = sorted([fname for fname in os.listdir('data/') if fname[-7:] == '_rs.csv'])
df = pd.read_csv('data/' + fnames[-1])
ddic = {
'AB': (df['A'].astype('str') + '-' + df['B'].astype(str)).tolist(),
'res': df['RS [kOhm]'].tolist()
}
rdic['data'] = ddic
elif dic['command'] == 'download':
shutil.make_archive('data', 'zip', 'data')
elif dic['command'] == 'shutdown':
print('shutting down...')
os.system('shutdown now -h')
elif dic['command'] == 'restart':
print('shutting down...')
os.system('reboot')
else:
# command not found
rdic['response'] = 'command not found'
rdic['status'] = ohmpi.status
self.send_response(200)
self.send_header('Content-Type', 'text/json')
self.end_headers()
self.wfile.write(bytes(json.dumps(rdic), 'utf8'))
if __name__ == "__main__":
webServer = HTTPServer((hostName, serverPort), MyServer)
print("Server started http://%s:%s" % (hostName, serverPort))
try:
webServer.serve_forever()
except KeyboardInterrupt:
pass
webServer.server_close()
print("Server stopped.")