def get_instrument(port):
print('Trying to connect to instrument', port, '...')
# Build the connector
try:
instrument = SPI("/dev/" + port)
except Exception as e:
exit_error('Could not connect to /dev/' + port)
print('Connected to instrument!', instrument)
return instrument
def get_instrument(port):
"""Connect to the instrument"""
print('Trying to connect to instrument', port, '...')
open_ports = find_ports()
portName = '/dev/' + port
if not any(portName in s for s in open_ports):
print('Found devices on ports: ' + ','.join(open_ports))
exit_error('CONNECTION_ERROR', 'Could not find device ' + portName)
print('Found device @ ' + portName)
# Build the connector
try:
instrument = SPI(portName)
print('Connected to instrument!', instrument)
return instrument
except Exception as e:
exit_error('CONNECTION_ERROR', 'Could not connect to ' + portName)
now.hour, now.minute, now.second)
try:
path = str(os.environ['outputPath_opc'])
except:
print("could not find env variable ")
path = ""
debug = 1
writeLog = 1
# Build the connector
#spi = SPI("COM22")
spi = SPI("/dev/serial/by-id/usb-Devantech_Ltd._USB-ISS._00045299-if00")
print("------------------------------------")
print("open serial port and connect to SPIt")
print("------------------------------------")
# Set the SPI mode and clock speed
spi.mode = 1
spi.max_speed_hz = 500000
alpha = opc.OPCR1(spi, firmware=[17,0])
print(alpha.read_firmware)
sleep(1)
'''this code is a low level test to check we wake up the OPCN3.
Next try read_once_opcn3 to use more features of the library'''
from usbiss.spi import SPI
import opc
# Open a SPI connection
spi = SPI("/dev/ttyACM0")
# Set the SPI mode and clock speed
spi.mode = 1
spi.max_speed_hz = 500000
try:
alpha = opc.OPCN3(spi)
except Exception as e:
print("Startup Error: {}".format(e))
# Turn on the OPC
alpha.on()
# Read the histogram and print to console
for key, value in alpha.histogram().items():
print("Key: {}\tValue: {}".format(key, value))
# Shut down the opc
alpha.off()
from usbiss.spi import SPI import time port = '/dev/ttyACM0' spi = SPI(port) spi.mode = 1 hz = 500000 spi.max_speed_hz = hz senddata = [0x03] t = time.time() spi.xfer(senddata, hz, 10) spi.xfer(senddata) #time.sleep(6) senddata = [0x30] spi.xfer(senddata) #senddata = [0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01] out = spi.xfer(senddata) print(out) spi.close()
import unittest
from time import sleep
from opc import OPCR1
from opc.exceptions import SpiConnectionError, FirmwareVersionError
from usbiss.spi import SPI
interval = 1
spi = SPI("/dev/ttyACM0",mode=1, max_speed_hz=500000)
alpha = OPCR1(spi)
alpha.on()
sleep(10)
print("Read info string")
print(alpha.read_info_string())
print("Read serial number")
print(alpha.sn())
print("Read firmware")
print(alpha.read_firmware())
print("Read config")
print(alpha.read_config())