<p>我在用adcads1115从树莓pi的加速度传感器中提取数据时遇到了一个问题。在</p>
<p>我使用这段代码将数据插入mysql</p>
<pre><code># Author: Tony DiCola
# License: Public Domain
# Import the ADS1x15 module.
import Adafruit_ADS1x15
import MySQLdb
import time
import datetime
# Create an ADS1115 ADC (16-bit) instance.
adc = Adafruit_ADS1x15.ADS1115()
# Or create an ADS1015 ADC (12-bit) instance.
#adc = Adafruit_ADS1x15.ADS1015()
# Note you can change the I2C address from its default (0x48), and/or the I2C
# bus by passing in these optional parameters:
#adc = Adafruit_ADS1x15.ADS1015(address=0x49, busnum=1)
# Choose a gain of 1 for reading voltages from 0 to 4.09V.
# Or pick a different gain to change the range of voltages that are read:
# - 2/3 = +/-6.144V
# - 1 = +/-4.096V
# - 2 = +/-2.048V
# - 4 = +/-1.024V
# - 8 = +/-0.512V
# - 16 = +/-0.256V
# See table 3 in the ADS1015/ADS1115 datasheet for more info on gain.
GAIN = 1
time_sensor = time.time()
# Main loop.
x = [1]*4
y = [2]*4
z = [3]*4
for i in range(4):
x[i] = adc.start_adc(i, gain=GAIN)
y[i] = adc.start_adc(i, gain=GAIN)
z[i] = adc.start_adc(i, gain=GAIN)
# Read the specified ADC channel using the previously set gain value.
# Once continuous ADC conversions are started you can call get_last_result() to
db = MySQLdb.connect("localhost", "root", "raspberry", "sensor_log")
curs=db.cursor()
while True:
try:
curs.execute("""INSERT INTO table_sensor_log(time, koordinatx, koordinaty, koordinatz)
values(%s,%s,%s,%s)""",(time_sensor,x[i],y[i],z[i]))
db.commit()
except:
print "Error"
db.rollback()
time.sleep(1)
db.close()
</code></pre>
<p>问题是当我运行该脚本时,接收到的数据是重复的,该脚本只从加速度计传感器的第一个数据中获取数据,然后重复插入。在</p>
<p>这就是我得到的。在</p>
^{pr2}$
<p>我需要传感器的真实数据,如果我使用print,数据会正确显示,但是当我把它插入mysql时,数据会是这样的。在</p>