1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
import serial
import scanf
class Amper(object):
__ser = None
__port = '/dev/ttyUSB0'
__speed = 115200
__parity = None
__rtscts = 0
__timeout = 1
__isThere = False
__version = None
__voltage = 0.0
__current = 0.0
__alarm_condition = 0
def __init__(self, port='/dev/ttyUSB0', serial_speed=115200, parity=serial.PARITY_NONE, rtscts=0):
self.__port = port
self.__speed = serial_speed
self.__parity = parity
self.__rtscts = rtscts
def open(self):
try:
if self.__ser is not None:
self.close()
self.__ser = serial.Serial(port=self.__port,
baudrate=self.__speed,
timeout=self.__timeout,
parity=self.__parity,
rtscts=self.__rtscts,
bytesize=serial.EIGHTBITS,
stopbits=serial.STOPBITS_ONE,
xonxoff=0)
self.__ser.flushInput()
self.__ser.flushOutput()
self.__ser.break_condition = False
return True
except serial.SerialException as err:
print(err)
return False
def close(self):
if self.__ser is not None:
self.__ser.close()
self.__ser = None
self.__isThere = False
self.__version = None
self.__voltage = 0.0
self.__current = 0.0
self.__alarm_condition = 0
def __write(self, data):
data += "\n\r"
dat = data.encode('ascii')
self.__ser.write(dat)
def __read(self):
return self.__ser.readline().decode().rstrip()
def __set_voltage_underlimit(self, under_limit):
if self.__isThere and self.__ser is not None:
self.__write('AT+VIN_UV_W_LIM={}'.format(under_limit))
dat = self.__read()
print(dat)
def __get_voltage_underlimit(self):
self.__write('AT+VIN_UV_W_LIM=?')
dat = self.__read()
res = scanf.scanf("%f", dat)
return res[0]
def __set_voltage_overlimit(self, over_limit):
if self.__isThere and self.__ser is not None:
self.__write('AT+VIN_OV_W_LIM={}'.format(over_limit))
dat = self.__read()
print(dat)
def __get_voltage_overlimit(self):
if self.__isThere and self.__ser is not None:
self.__write('AT+VIN_OV_W_LIM?')
dat = self.__read()
res = scanf.scanf("%f", dat)
return res[0]
def __set_current_overlimit(self, over_limit):
if self.__isThere and self.__ser is not None:
self.__write('AT+IOUT_W_LIM={}'.format(over_limit))
dat = self.__read()
print(dat)
def __get_current_overlimit(self):
if self.__isThere and self.__ser is not None:
self.__write('AT+IOUT_W_LIM?')
dat = self.__read()
dat = self.__read()
res = scanf.scanf("%f", dat)
return res[0]
def hello(self):
self.__isThere = False
if self.__ser is None:
return False
self.__write('at+ver?')
dat = self.__read()
res = scanf.scanf("ISEE Amper v%3c", dat)
if res is None:
return False
self.__isThere = True
self.__version = res[0]
return True
def getVersion(self):
return self.__version
def getVoltage(self):
if self.__isThere and self.__ser is not None:
self.__write('at+vin?')
dat = self.__read()
res = scanf.scanf("%f", dat)
self.__voltage = res[0]
# print(self.__voltage)
return self.__voltage
else:
return None
def getCurrent(self):
if self.__isThere and self.__ser is not None:
self.__write('at+in?')
dat = self.__read()
res = scanf.scanf("%f", dat)
self.__current = res[0]
# print(self.__current)
else:
return None
return self.__current
def getAlarm(self):
if self.__isThere and self.__ser is not None:
self.__write('at+st_mfr?')
dat = self.__read()
# print(dat)
self.__alarm_condition = (int(dat) & 0x0F)
# print(self.__alarm_condition)
return self.__alarm_condition
def clearAlarm(self):
if self.__isThere and self.__ser is not None:
self.__write('at+CLRFAULT')
dat = self.__read()
# print(dat)
|
