Raspberry Pi BME280 Google Drive

##やろうとしていること

① Raspberry PiでBME280の温度・湿度・気圧データを取得　（済）
② 取得したBME280のデータをGoogle Driveに保存（今ここの段階です。）

##困っていること
次のプログラムコードを試しているときにエラーが発生しました。
エラーの原因がつかめずに困っています。

##エラー内容

html
1Traceback (most recent call last):
2  File "5_BME280GDV.py", line 178, in <module>
3    column_datas.append("%7.2f" % (pressure/100))
4NameError: name 'pressure' is not defined

##プログラムコード

html
1#!/usr/bin/python
2# -*- coding: utf-8 -*-
3
4from smbus import SMBus
5import time
6
7bus_number  = 1
8i2c_address = 0x76
9
10bus = SMBus(bus_number)
11
12digT = []
13digP = []
14digH = []
15
16t_fine = 0.0
17
18
19def writeReg(reg_address, data):
20    bus.write_byte_data(i2c_address,reg_address,data)
21
22def get_calib_param():
23    calib = []
24
25    for i in range (0x88,0x88+24):
26        calib.append(bus.read_byte_data(i2c_address,i))
27    calib.append(bus.read_byte_data(i2c_address,0xA1))
28    for i in range (0xE1,0xE1+7):
29        calib.append(bus.read_byte_data(i2c_address,i))
30
31    digT.append((calib[1] << 8) | calib[0])
32    digT.append((calib[3] << 8) | calib[2])
33    digT.append((calib[5] << 8) | calib[4])
34    digP.append((calib[7] << 8) | calib[6])
35    digP.append((calib[9] << 8) | calib[8])
36    digP.append((calib[11]<< 8) | calib[10])
37    digP.append((calib[13]<< 8) | calib[12])
38    digP.append((calib[15]<< 8) | calib[14])
39    digP.append((calib[17]<< 8) | calib[16])
40    digP.append((calib[19]<< 8) | calib[18])
41    digP.append((calib[21]<< 8) | calib[20])
42    digP.append((calib[23]<< 8) | calib[22])
43    digH.append( calib[24] )
44    digH.append((calib[26]<< 8) | calib[25])
45    digH.append( calib[27] )
46    digH.append((calib[28]<< 4) | (0x0F & calib[29]))
47    digH.append((calib[30]<< 4) | ((calib[29] >> 4) & 0x0F))
48    digH.append( calib[31] )
49
50    for i in range(1,2):
51        if digT[i] & 0x8000:
52            digT[i] = (-digT[i] ^ 0xFFFF) + 1
53
54    for i in range(1,8):
55        if digP[i] & 0x8000:
56            digP[i] = (-digP[i] ^ 0xFFFF) + 1
57
58    for i in range(0,6):
59        if digH[i] & 0x8000:
60            digH[i] = (-digH[i] ^ 0xFFFF) + 1  
61
62def readData():
63    data = []
64    for i in range (0xF7, 0xF7+8):
65        data.append(bus.read_byte_data(i2c_address,i))
66    pres_raw = (data[0] << 12) | (data[1] << 4) | (data[2] >> 4)
67    temp_raw = (data[3] << 12) | (data[4] << 4) | (data[5] >> 4)
68    hum_raw  = (data[6] << 8)  |  data[7]
69
70    compensate_T(temp_raw)
71    compensate_P(pres_raw)
72    compensate_H(hum_raw)
73
74def compensate_P(adc_P):
75    global  t_fine
76    pressure = 0.0
77
78    v1 = (t_fine / 2.0) - 64000.0
79    v2 = (((v1 / 4.0) * (v1 / 4.0)) / 2048) * digP[5]
80    v2 = v2 + ((v1 * digP[4]) * 2.0)
81    v2 = (v2 / 4.0) + (digP[3] * 65536.0)
82    v1 = (((digP[2] * (((v1 / 4.0) * (v1 / 4.0)) / 8192)) / 8)  + ((digP[1] * v1) / 2.0)) / 262144
83    v1 = ((32768 + v1) * digP[0]) / 32768
84
85    if v1 == 0:
86        return 0
87    pressure = ((1048576 - adc_P) - (v2 / 4096)) * 3125
88    if pressure < 0x80000000:
89        pressure = (pressure * 2.0) / v1
90    else:
91        pressure = (pressure / v1) * 2
92    v1 = (digP[8] * (((pressure / 8.0) * (pressure / 8.0)) / 8192.0)) / 4096
93    v2 = ((pressure / 4.0) * digP[7]) / 8192.0
94    pressure = pressure + ((v1 + v2 + digP[6]) / 16.0)
95    print "pressure : %7.2f hPa" % (pressure/100)
96
97def compensate_T(adc_T):
98    global t_fine
99    v1 = (adc_T / 16384.0 - digT[0] / 1024.0) * digT[1]
100    v2 = (adc_T / 131072.0 - digT[0] / 8192.0) * (adc_T / 131072.0 - digT[0] / 8192.0) * digT[2]
101    t_fine = v1 + v2
102    temperature = t_fine / 5120.0
103    print "temp : %-6.2f ℃" % (temperature)
104
105def compensate_H(adc_H):
106    global t_fine
107    var_h = t_fine - 76800.0
108    if var_h != 0:
109        var_h = (adc_H - (digH[3] * 64.0 + digH[4]/16384.0 * var_h)) * (digH[1] / 65536.0 * (1.0 + digH[5] / 67108864.0 * var_h * (1.0 + digH[2] / 67108864.0 * var_h)))
110    else:
111        return 0
112    var_h = var_h * (1.0 - digH[0] * var_h / 524288.0)
113    if var_h > 100.0:
114        var_h = 100.0
115    elif var_h < 0.0:
116        var_h = 0.0
117    print "hum : %6.2f ％" % (var_h)
118
119
120def setup():
121    osrs_t = 1            #Temperature oversampling x 1
122    osrs_p = 1            #Pressure oversampling x 1
123    osrs_h = 1            #Humidity oversampling x 1
124    mode   = 3            #Normal mode
125    t_sb   = 5            #Tstandby 1000ms
126    filter = 0            #Filter off
127    spi3w_en = 0            #3-wire SPI Disable
128
129    ctrl_meas_reg = (osrs_t << 5) | (osrs_p << 2) | mode
130    config_reg    = (t_sb << 5) | (filter << 2) | spi3w_en
131    ctrl_hum_reg  = osrs_h
132
133    writeReg(0xF2,ctrl_hum_reg)
134    writeReg(0xF4,ctrl_meas_reg)
135    writeReg(0xF5,config_reg)
136
137
138setup()
139get_calib_param()
140
141
142if __name__ == '__main__':
143    try:
144        readData()
145    except KeyboardInterrupt:
146        pass
147
148
149import gspread
150from oauth2client.service_account import ServiceAccountCredentials
151
152from datetime import datetime
153
154column_datas = []
155
156def read_data():
157    global column_datas
158
159column_datas.append(datetime.now().strftime("%Y/%m/%d %H:%M:%S"))
160
161
162def write_data():
163 global column_datas
164 filename = '/home/pi/xxx/abcde.json'
165 client_email = "abcdef@gmail.com"
166 with open(filename) as f: private_key = f.read()
167 scopes = ['https://spreadsheets.google.com/feeds/', 'https://docs.google.com/feeds']
168 credentials = ServiceAccountCredentials.from_json_keyfile_name(filename, scopes)
169 gs = gspread.authorize(credentials)
170 doc = gs.open('BME280')
171 sheet = doc.worksheet("BME280")
172 sheet.append_row(column_datas)
173
174
175def compensate_P(adc_P):
176    global column_datas
177
178column_datas.append("%7.2f" % (pressure/100))
179
180
181def compensate_T(adc_T):
182    global column_datas
183
184column_datas.append("%-6.2f" % (temperature))
185
186
187def compensate_H(adc_H):
188    global column_datas
189
190column_datas.append("%6.2f" % (var_h))
191
192
193if __name__ == '__main__':
194 try:
195     read_data()     
196     tweet_data()    
197     write_data()
198 except:
199     pass