final_8조 / Mbed OS Line-Tracking

ss

Dependencies:   WS2812 PixelArray Adafruit_GFX

Diff: PCF8574.cpp

Revision:
0:27e31cadeb36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PCF8574.cpp	Sat Jun 15 13:09:31 2019 +0000
@@ -0,0 +1,20 @@
+#include "PCF8574.h"
+#include "mbed.h"
+ 
+PCF8574::PCF8574(PinName sda, PinName scl, int address)
+        : _i2c(sda, scl) {
+    _address = address;
+    _i2c.frequency(100000);
+}
+ 
+int PCF8574::read() {
+    char foo[1];
+    _i2c.read(_address, foo, 1);
+    return foo[0];
+}
+ 
+void PCF8574::write(int data) {
+    char foo[1];
+    foo[0] = data;
+    _i2c.write(_address, foo, 1);
+}