Diff: Protocols/I2C_bus.cpp

Revision:

33:f87f06292637

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Protocols/I2C_bus.cpp	Mon Feb 06 12:29:33 2017 +0000
@@ -0,0 +1,132 @@
+/* mbed UniGraphic library - I2C protocol class
+ * Copyright (c) 2017 Peter Drescher
+ * Released under the MIT License: http://mbed.org/license/mit
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+ 
+#include "I2C_bus.h"
+
+I2C_bus::I2C_bus(int Hz, int address, PinName sda, PinName scl)
+    : _i2c(sda,scl)
+{
+    _i2c.frequency(Hz);
+    _address = address;
+    //hw_reset();    
+}
+
+void I2C_bus::wr_cmd8(unsigned char cmd)
+{     
+    char tmp[2];
+    tmp[0] = 0x00;  //command 
+    tmp[1] = cmd;
+    _i2c.write(_address,tmp,2);
+}
+void I2C_bus::wr_data8(unsigned char data)
+{
+    _i2c.write(data);    // write 8bit
+}
+void I2C_bus::wr_cmd16(unsigned short cmd)
+{     
+    char tmp[3];
+    tmp[0] = 00; //command
+    tmp[1] = cmd>>8;
+    tmp[2] = cmd&0xFF;
+    
+    _i2c.write(_address,tmp,3);
+}
+void I2C_bus::wr_data16(unsigned short data)
+{
+    _i2c.write(data>>8);    // write 8bit
+    _i2c.write(data&0xFF);    // write 8bit
+}
+void I2C_bus::wr_gram(unsigned short data)
+{
+    _i2c.write(data>>8);    // write 8bit
+    _i2c.write(data&0xFF);    // write 8bit
+}
+void I2C_bus::wr_gram(unsigned short data, unsigned int count)
+{
+    _i2c.start();
+    _i2c.write(_address);
+    _i2c.write(0x40);          // data continue
+    if((data>>8)==(data&0xFF))
+    {
+        count<<=1;
+        while(count)
+        {
+            _i2c.write(data);    // write 8bit
+            count--;
+        }
+    }
+    else
+    {
+        while(count)
+        {
+            _i2c.write(data>>8);    // write 8bit
+            _i2c.write(data&0xFF);    // write 8bit
+            count--;
+        }
+    }
+   _i2c.stop();
+}
+void I2C_bus::wr_grambuf(unsigned short* data, unsigned int lenght)
+{
+    _i2c.start();
+    _i2c.write(_address);
+    _i2c.write(0x40);          // data continue
+    while(lenght)
+    {
+        _i2c.write((*data)>>8);    // write 8bit
+        _i2c.write((*data)&0xFF);    // write 8bit
+        data++;
+        lenght--;
+    }
+    _i2c.stop();
+}
+
+void I2C_bus::hw_reset()
+{
+    
+}
+void I2C_bus::BusEnable(bool enable)
+{
+}
+
+void I2C_bus::reg_select(unsigned char reg, bool forread)
+{    
+}
+
+unsigned int I2C_bus::rd_reg_data32(unsigned char reg)
+{
+     return 0;
+}
+
+unsigned int I2C_bus::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
+{
+    return 0;
+}
+
+void I2C_bus::dummyread()
+{
+}
+
+unsigned short I2C_bus::rd_gram(bool convert)
+{
+    return (0);    
+}
+
+unsigned short I2C_bus::reg_read(unsigned char reg)
+{
+    return (0);
+}
+
+void I2C_bus::reg_write(unsigned char reg, unsigned short data)
+{
+}
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