Diff: i2cslave.cpp

Revision:

0:2976149f5c28

diff -r 000000000000 -r 2976149f5c28 i2cslave.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/i2cslave.cpp	Sun Feb 26 07:04:56 2017 +0000
@@ -0,0 +1,39 @@
+#include "i2cslave.h"
+
+i2cslave::i2cslave(PinName sda, PinName scl, char *Registar) : I2CSlave(sda, scl)
+{
+    _Registar = Registar;
+    frequency(400000);
+}
+
+void i2cslave::communication()
+{
+    switch(receive())
+    {
+        case I2CSlave::NoData:            //データなし
+            break;
+        case I2CSlave::ReadAddressed:     //マスターからのデータ送信要求
+            break;
+        case I2CSlave::WriteAddressed:    //マスターからデータを受信
+            geti2c();
+            break;
+        case I2CSlave::WriteGeneral:      //マスターからデータを受信（全スレーブ宛）
+            break;
+    }
+}
+void i2cslave::geti2c()
+{
+    char i2cData[3] = {};
+    read(i2cData, 3);
+    wait_us(30);
+    switch(i2cData[2])
+    {
+        case SendData:
+            read(_Registar + i2cData[1], i2cData[0]);
+            break;
+        case RequestData:
+            write(_Registar + i2cData[1], i2cData[0]);
+            break;
+    }
+}
+