if os.isatty(fd):
old = termios.tcgetattr(fd)
new = termios.tcgetattr(fd)
new[3] = new[3] & ~termios.ICANON & ~termios.ECHO
new[6] [termios.VMIN] = 1
new[6] [termios.VTIME] = 0
try:
termios.tcsetattr(fd, termios.TCSANOW, new)
termios.tcsendbreak(fd,0)
ch = os.read(fd,7)
finally:
termios.tcsetattr(fd, termios.TCSAFLUSH, old)
else:
ch = os.read(fd,7)
return(ch)
v = u1272.u1272('/dev/ttyUSB1',19200)
i = u1272.u1272('/dev/ttyUSB2',19200)
while True:
print "%f,%f"%(v.read(),i.read())
k = getchar()
if k == 'x':
break
#!/usr/bin/env python
import urllib2, json, time
from getchar import getchar
import time, u1272, sys, os
voltmeter = u1272.u1272('/dev/ttyUSB1', 19200)
ammeter = u1272.u1272('/dev/ttyUSB2', 19200)
fname = time.strftime("%y%m%d-caldata.csv", time.localtime(time.time()))
fdata = open(fname, "a")
fdata.write("\n")
running = True
while running:
pvilast = 0.0
count = 0
while True: # loop until value stops changing
pvv = voltmeter.read()
pvi = ammeter.read()
if abs(pvilast - pvi) < 0.01:
count += 1
if count > 2:
print
break
pvilast = pvi
time.sleep(0.25)
sys.stdout.write(".")