Python Raspberry PI-访问0x40时出错:检查I2C地址
我尝试在我的raspberry PI上运行这个python伺服脚本。我从这里得到了这个密码 python伺服脚本Python Raspberry PI-访问0x40时出错:检查I2C地址,python,linux,raspberry-pi,Python,Linux,Raspberry Pi,我尝试在我的raspberry PI上运行这个python伺服脚本。我从这里得到了这个密码 python伺服脚本 #!/usr/bin/python from Adafruit_PWM_Servo_Driver import PWM import time # =========================================================================== # Example Code # ========================
#!/usr/bin/python
from Adafruit_PWM_Servo_Driver import PWM
import time
# ===========================================================================
# Example Code
# ===========================================================================
# Initialise the PWM device using the default address
# bmp = PWM(0x40, debug=True)
pwm = PWM(0x40, debug=True)
servoMin = 150 # Min pulse length out of 4096
servoMax = 600 # Max pulse length out of 4096
def setServoPulse(channel, pulse):
pulseLength = 1000000 # 1,000,000 us per second
pulseLength /= 60 # 60 Hz
print "%d us per period" % pulseLength
pulseLength /= 4096 # 12 bits of resolution
print "%d us per bit" % pulseLength
pulse *= 1000
pulse /= pulseLength
pwm.setPWM(channel, 0, pulse)
pwm.setPWMFreq(60) # Set frequency to 60 Hz
while (True):
# Change speed of continuous servo on channel O
pwm.setPWM(0, 0, servoMin)
time.sleep(1)
pwm.setPWM(0, 0, servoMax)
time.sleep(1)
我尝试这个解决方案,但没有帮助
请给出建议。首先,您不希望每次都以root用户身份登录:只需在需要时放置sudo并键入密码即可 第二:i2c总线配置不正确或接线错误。i2cdetect命令没有看到任何附加内容。 您已安装smbus和i2ctools,但是否已将i2c-bcm2708从黑名单中删除? 您需要键入:
sudo nano /etc/modprobe.d/raspi-blacklist.conf
并在线路i2c-dev和i2c-bcm2708上添加a
发件人:
致:
然后,您需要在启动时为i2c添加模块
sudo nano /etc/modules
并将这两行添加到文件末尾:
i2c-bcm2708
i2c-dev
现在,您可以使用命令手动加载这些模块
sudo modprobe i2c-bcm2708
sudo modprobe i2c-dev
现在再次键入:
sudo i2cdetect -y 0 #if you have a rev1 board
sudo i2cdetect -y 1 #if you have a rev2 board
现在,如果你像以前一样在图表中看到除了点以外的任何东西,检查你的接线。
如果您看到了什么,那就是伺服驱动器的地址。可能更适合于。
sudo modprobe i2c-bcm2708
sudo modprobe i2c-dev
sudo i2cdetect -y 0 #if you have a rev1 board
sudo i2cdetect -y 1 #if you have a rev2 board