Diff: MB85RCxx_I2C.cpp

Revision:

0:f7119e0aa405

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MB85RCxx_I2C.cpp	Sat Apr 22 12:14:35 2017 +0000
@@ -0,0 +1,101 @@
+/**
+ ******************************************************************************
+ * @file    MB85RCxx_I2C.cpp
+ * @author  Toyomasa Watarai
+ * @version V1.0.0
+ * @date    22 April 2017
+ * @brief   MB85RCxx_I2C class implementation
+ ******************************************************************************
+ * @attention
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 "mbed.h"
+#include "MB85RCxx_I2C.h"
+
+MB85RCxx_I2C::MB85RCxx_I2C(PinName sda, PinName scl, char slave_adr)
+    :
+    _i2c_p(new I2C(sda, scl)), 
+    _i2c(*_i2c_p),
+    _address(slave_adr)
+{
+    _i2c.frequency(400000);
+}
+
+MB85RCxx_I2C::~MB85RCxx_I2C()
+{
+    if (NULL != _i2c_p)
+        delete  _i2c_p;
+}
+
+int MB85RCxx_I2C::read_device_id(char* device_id)
+{
+    _i2c.write(0xF8, &_address, 1, true);
+    _i2c.read(0xF9, device_id, 3);
+    
+    return (device_id[1] & 0x0F);
+}
+
+void MB85RCxx_I2C::read(uint32_t address, char *data, uint32_t length)
+{
+    char byte_address[2];
+    char i2c_adrs = (_address | ((address >> 15) & 0x02));
+    
+    byte_address[0] = ((address >> 8) & 0xFF);
+    byte_address[1] = ((address >> 0) & 0xFF);
+    _i2c.write(i2c_adrs, byte_address, 2, true);
+    _i2c.read(i2c_adrs, data, length);
+}
+
+void MB85RCxx_I2C::write(uint32_t address, char *data, uint32_t length)
+{
+    char byte_address[2];
+    char i2c_adrs = (_address | ((address >> 15) & 0x02));
+    
+    byte_address[0] = ((address >> 8) & 0xFF);
+    byte_address[1] = ((address >> 0) & 0xFF);
+    _i2c.write(i2c_adrs, byte_address, 2, true);
+    for (uint32_t i = 0; i < length; i++) {
+        _i2c.write(*data++);
+    }
+}
+
+void MB85RCxx_I2C::write(uint32_t address, char data)
+{
+    char byte_address[2];
+    char i2c_adrs = (_address | ((address >> 15) & 0x02));
+    
+    byte_address[0] = ((address >> 8) & 0xFF);
+    byte_address[1] = ((address >> 0) & 0xFF);
+    _i2c.write(i2c_adrs, byte_address, 2, true);
+    _i2c.write(data);
+}
+
+void MB85RCxx_I2C::fill(uint32_t address, uint8_t data, uint32_t length)
+{
+    char byte_address[2];
+    char i2c_adrs = (_address | ((address >> 15) & 0x02));
+    
+    byte_address[0] = ((address >> 8) & 0xFF);
+    byte_address[1] = ((address >> 0) & 0xFF);
+    _i2c.write(i2c_adrs, byte_address, 2, true);
+    for (uint32_t i = 0; i < length; i++) {
+        _i2c.write(data);
+    }
+}