final_8조 / Mbed OS Line-Tracking

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Dependencies:   WS2812 PixelArray Adafruit_GFX

PCF8574.h@0:27e31cadeb36, 2019-06-15 (annotated)

Committer:
eunsong
Date:
Sat Jun 15 13:09:31 2019 +0000
Revision:
0:27e31cadeb36
yes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
eunsong 0:27e31cadeb36 1 #include "mbed.h"
eunsong 0:27e31cadeb36 2
eunsong 0:27e31cadeb36 3 #ifndef MBED_PCF8574_H
eunsong 0:27e31cadeb36 4 #define MBED_PCF8574_H
eunsong 0:27e31cadeb36 5
eunsong 0:27e31cadeb36 6 /** Interface to the popular PCF8574 I2C 8 Bit IO expander */
eunsong 0:27e31cadeb36 7 class PCF8574 {
eunsong 0:27e31cadeb36 8 public:
eunsong 0:27e31cadeb36 9 /** Create an instance of the PCF8574 connected to specfied I2C pins, with the specified address.
eunsong 0:27e31cadeb36 10 *
eunsong 0:27e31cadeb36 11 * @param sda The I2C data pin
eunsong 0:27e31cadeb36 12 * @param scl The I2C clock pin
eunsong 0:27e31cadeb36 13 * @param address The I2C address for this PCF8574
eunsong 0:27e31cadeb36 14 */
eunsong 0:27e31cadeb36 15 PCF8574(PinName sda, PinName scl, int address);
eunsong 0:27e31cadeb36 16
eunsong 0:27e31cadeb36 17 /** Read the IO pin level
eunsong 0:27e31cadeb36 18 *
eunsong 0:27e31cadeb36 19 * @return The byte read
eunsong 0:27e31cadeb36 20 */
eunsong 0:27e31cadeb36 21 int read();
eunsong 0:27e31cadeb36 22
eunsong 0:27e31cadeb36 23 /** Write to the IO pins
eunsong 0:27e31cadeb36 24 *
eunsong 0:27e31cadeb36 25 * @param data The 8 bits to write to the IO port
eunsong 0:27e31cadeb36 26 */
eunsong 0:27e31cadeb36 27 void write(int data);
eunsong 0:27e31cadeb36 28
eunsong 0:27e31cadeb36 29 private:
eunsong 0:27e31cadeb36 30 I2C _i2c;
eunsong 0:27e31cadeb36 31 int _address;
eunsong 0:27e31cadeb36 32 };
eunsong 0:27e31cadeb36 33
eunsong 0:27e31cadeb36 34 #endif