Diff: SakuraIO_I2C.cpp

Revision:

0:8d34375d954c

Child:

1:20e1dfe45dab

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SakuraIO_I2C.cpp	Sat Nov 19 03:20:17 2016 +0000
@@ -0,0 +1,65 @@
+#include "mbed.h"
+#include "SakuraIO.h"
+#include "SakuraIO/debug.h"
+
+#define SAKURAIO_SLAVE_ADDR 0x4F
+
+#define MODE_IDLE  0x00
+#define MODE_WRITE 0x01
+#define MODE_READ  0x02
+
+void SakuraIO_I2C::begin(){
+  mode = MODE_IDLE;
+}
+
+void SakuraIO_I2C::end(){
+  switch(mode){
+    case MODE_WRITE:
+      i2c.stop();
+      break;
+    case MODE_READ:
+      i2c.read(true);
+      break;
+  }
+
+  mode = MODE_IDLE;
+}
+
+void SakuraIO_I2C::sendByte(uint8_t data){
+  if(mode != MODE_WRITE){
+    dbgln("beginTr");
+    i2c.start();
+    i2c.write(SAKURAIO_SLAVE_ADDR<<1);
+    mode = MODE_WRITE;
+  }
+  dbg("Write=");
+  dbgln(data);
+  i2c.write(data);
+}
+
+
+uint8_t SakuraIO_I2C::startReceive(uint8_t length){
+  dbgln("endTransmission");
+  i2c.stop();
+  dbg("requestForm=");
+  dbgln(length);
+  i2c.start();
+  i2c.write(SAKURAIO_SLAVE_ADDR<<1 | 1);
+  mode = MODE_READ;
+}
+
+uint8_t SakuraIO_I2C::receiveByte(){
+  return i2c.read(true);
+}
+
+uint8_t SakuraIO_I2C::receiveByte(bool stop){
+  uint8_t ret = 0;
+  ret = i2c.read(!stop);
+  dbg("Read=");
+  dbgln(ret);
+  return ret;
+}
+
+SakuraIO_I2C::SakuraIO_I2C(I2C &_i2c): i2c(_i2c){
+  mode = MODE_IDLE;
+}