From http://www.cnblogs.com/xiaobo-Linux/p/8969324.html command line control LED light
echo >/sys/class/gpio/export Write output
cd/sys/class/gpio/gpio12/
Enter this port
The main 2 files Direction/value
Direction control output echo out > Direction/control input echo in > direction
Value control high and low level 1, 0 low echo 1 > Value lit/echo 0 > value off
Read high and low level cat value
Use Python to light a lamp.
$sudo python//start python;
>>import Rpi.gpio as gpio;//import Rpi.gpio module
>>gpio.setmode (GPIO). BCM);//Setup module;
>>gpio.setup (12,gpio.out)//Set GPIO 12 output state;
>>gpio.output (12,gpio. HI)//high-level lit
>>gpio.output (12,gpio. Low)//off-level
>>exit ()
Let the LED blink (python)
Import Rpi.gpio as Gpio//Importing module import time//Gpio.setmode (GPIO). BCM)//Set Gpio.setup (12,gpio. Out)//output Port 12while True://Wireless Cycle Gpio.output (12,gpio. High)//Time.sleep (1)//Pause 1S gpio.output (12,gpio. Low)//Time.sleep (1)//pause 1s led flash blind (Python)
Import Rpi.gpio as Gpioimport timeimport math Gpio.setmode (GPIO. BCM) Gpio.setup (18,gpio. Out) Gpio.setup (21,gpio. Out) Gpio.setup (22,gpio. Out) Gpio.setup (16,gpio. Out) Gpio.setup (12,gpio. Out) Gpio.setup (23,gpio. Out) Gpio.setup (7,gpio. Out) Gpio.setup (8,gpio. Out) for I in range (0,1): Gpio.output (18,gpio. High) Time.sleep (0.5) gpio.output (18,gpio. Low) Time.sleep (0.5) gpio.output (21,gpio. High) Time.sleep (0.5) gpio.output (21,gpio. Low) Time.sleep (0.5) gpio.output (22,gpio. High) Time.sleep (0.5) gpio.output (22,gpio. Low) Time.sleep (0.5) gpio.output (23,gpio. High) Time.sleep (0.5) gpio.output (23,gpio. Low) Time.sleep (0.5) gpio.output (12,gpio. High)
time.sleep (0.5) Gpio.output (12,gpio. Low) Time.sleep (0.5) Gpio.output (16,gpio. High) Time.sleep (0.5) Gpio.output (16,gpio. Low) Time.sleep (0.5) Gpio.output (7,gpio. High) Time.sleep (0.5) Gpio.output (7,gpio. Low) Time.sleep (0.5) Gpio.output (8,gpio. High) Time.sleep (0.5) Gpio.output (8,gpio. Low) Time.sleep (0.5) Gpio.output (8,gpio. High) Time.sleep (0.5) Gpio.output (8,gpio. Low) Time.sleep (0.5) Gpio.output (7,gpio. High) Time.sleep (0.5) Gpio.output (7,gpio. Low) Time.sleep (0.5) Gpio.output (16,gpio. High) Time.sleep (0.5) Gpio.output (16,gpio. Low) Time.sleep (0.5) Gpio.output (12,gpio. High) Time.sleep (0.5) Gpio.output (12,gpio. Low) &nbsP Time.sleep (0.5) Gpio.output (23,gpio. High) Time.sleep (0.5) Gpio.output (23,gpio. Low) Time.sleep (0.5) Gpio.output (22,gpio. High) Time.sleep (0.5) Gpio.output (22,gpio. Low) Time.sleep (0.5) Gpio.output (21,gpio. High) Time.sleep (0.5) Gpio.output (21,gpio. Low) Time.sleep (0.5) Gpio.output (18,gpio. High) Time.sleep (0.5) Gpio.output (18,gpio. Low) Time.sleep (0.5) while true: Gpio.output (18,gpio. High) Time.sleep (0.01) Gpio.output (18,gpio. Low) Time.sleep (0.01) Gpio.output (21,gpio. High) Time.sleep (0.01) Gpio.output (21,gpio. Low) Time.sleep (0.01) Gpio.output (22,gpio. High) Time.sleep (0.01) Gpio.output (22,gpio. Low) Time.sleep (0.01) Gpio.output (23,gpio. High) Time.sleep (0.01) Gpio.output (23,gpio. Low) Time.sleep (0.01) Gpio.output (12,gpio. High) Time.sleep (0.01) Gpio.output (12,gpio. Low) Time.sleep (0.01) Gpio.output (16,gpio. High) Time.sleep (0.01) Gpio.output (16,gpio. Low) Time.sleep (0.01) Gpio.output (7,gpio. High) Time.sleep (0.01) Gpio.output (7,gpio. Low) Time.sleep (0.01) Gpio.output (8,gpio. High) Time.sleep (0.01) Gpio.output (8,gpio. Low) Time.sleep (0.01) Gpio.output (8,gpio. High) Time.sleep (0.01) Gpio.output (8,gpio. Low) Time.sleep (0.01) Gpio.output (7,gpio. High) Time.sleep (0.01) Gpio.output (7,gpio. Low) Time.sleep (0.01) Gpio.output (16,gpio. High) Time.sleeP (0.01) Gpio.output (16,gpio. Low) Time.sleep (0.01) Gpio.output (12,gpio. High) Time.sleep (0.01) Gpio.output (12,gpio. Low) Time.sleep (0.01) Gpio.output (23,gpio. High) Time.sleep (0.1) Gpio.output (23,gpio. Low) Time.sleep (0.1) Gpio.output (22,gpio. High) Time.sleep (0.01) Gpio.output (22,gpio. Low) Time.sleep (0.01) Gpio.output (21,gpio. High) Time.sleep (0.01) Gpio.output (21,gpio. Low) Time.sleep (0.01) Gpio.output (18,gpio. High) Time.sleep (0.01) Gpio.output (18,gpio. Low) Time.sleep (0.01) python definition
The function descriptor int (x [, Base]) converts x to an integer. The cardinality is specified as base, if X is a string. Long (x [, Base]) converts x to a long integer. The cardinality is specified as base, if X is a string. Float (x) converts the x to a floating-point number. Complex (real [, Imag]) creates a complex number. STR (x) Converts the object x to a string representation. Repr (x) object x is converted to an expression string. eval (str) evaluates a string and returns an object. Tuple (s) converts s to a tuple. List (s) converts s to a list. Set (s) converts s to a collection. Dict (d) Create a dictionary. D must be the (key, value) tuple sequence. Frozenset (s) converts s to frozen set. Chr (x) integers are converted to one character. The UNICHR (x) integer is converted to a Unicode character. Ord (x) converts a single character to an integer value. Hex (x) converts an integer to a hexadecimal string. The OCT (x) converts integers to strings that are eight-binary.
1. Install python$ sudo apt-get install python-dev copy Code 2. Execute update $ sudo easy_install-u distribute copy code 3. Installing python-pip$ sudo apt-get Install PYTHON-PIP Copy code 4. Installing Python's Gpio library $ sudo pip install rpi.gpio copy Code
Raspberry Gpio &&python
