Diff: max77816.cpp

Revision:

0:c39030c3a7cf

Child:

1:7182e55f5f59

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max77816.cpp	Tue Mar 20 12:29:51 2018 +0000
@@ -0,0 +1,215 @@
+/*******************************************************************************
+ * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * 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 MAXIM INTEGRATED 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.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+#include "max77816.h"
+ 
+/***** Definitions *****/
+#define I2C_ADDR            (0x18<<1)
+ 
+//******************************************************************************
+MAX77816::MAX77816(PinName sda, PinName scl)
+{
+    i2c_ = new I2C(sda, scl);
+    i2c_owner = true;
+ 
+    i2c_->frequency(400000);
+}
+ 
+//******************************************************************************
+MAX77816::MAX77816(I2C *i2c) :
+    i2c_(i2c)
+{
+    i2c_owner = false;
+}
+ 
+//******************************************************************************
+MAX77816::~MAX77816()
+{
+    if(i2c_owner) {
+        delete i2c_;
+    }
+}
+ 
+//******************************************************************************
+int32_t MAX77816::init()
+{ 
+    return 0;
+}
+ 
+//******************************************************************************
+int32_t MAX77816::writeReg(MAX77816::registers_t reg_addr, char reg_data)
+{
+    char data[2];
+ 
+    data[0] = reg_addr;
+    data[1] = reg_data;
+    if (i2c_->write(I2C_ADDR, data, 2) != 0) {
+        return -1;
+    }
+ 
+    return 0;
+}
+ 
+//******************************************************************************
+int32_t MAX77816::readReg(MAX77816::registers_t reg_addr)
+{
+    char data;
+ 
+    data = reg_addr;
+    if (i2c_->write(I2C_ADDR, &data, 1, true) != 0) {
+        return -1;
+    }
+ 
+    if (i2c_->read(I2C_ADDR | 0x01, &data, 1) != 0) {
+        return -1;
+    }
+ 
+    return (0x0 + data);
+}
+
+
+
+//*****************************************************************************
+int32_t MAX77816::readBlock(MAX77816::registers_t startReg, MAX77816::registers_t stopReg, uint8_t *data)
+{
+    int32_t rtnVal = -1;
+    int32_t numBytes = ((stopReg - startReg) + 1);
+    char packet[] = {static_cast<char>(startReg)};
+    
+    if(i2c_->write(I2C_ADDR, packet, 1) == 0)
+    {
+        rtnVal = i2c_->read(I2C_ADDR | 0x01, reinterpret_cast<char *>(data), numBytes);
+    }
+    
+    return rtnVal;
+}
+
+
+//*****************************************************************************
+int32_t MAX77816::writeBlock(MAX77816::registers_t startReg, MAX77816::registers_t stopReg, const uint8_t *data)
+{
+    int32_t numBytes = ((stopReg - startReg) + 1);
+    char packet[numBytes + 1];
+    
+    packet[0] = static_cast<char>(startReg);
+    
+    memcpy(packet + 1, data, numBytes);
+    
+    return i2c_->write(I2C_ADDR, packet, sizeof(packet));
+}
+
+
+//*****************************************************************************
+int32_t MAX77816::getVersion()
+{
+    int32_t rData;
+    
+    rData = readReg(REG_0);
+    if(rData< 0)
+        return rData;
+        
+    return ((rData >> 4) & 0x7);
+}
+
+
+//*****************************************************************************
+int32_t MAX77816::getChipRevision()
+{
+    int32_t rData;
+    
+    rData = readReg(REG_0);
+    if(rData< 0)
+        return rData;
+        
+    return ((rData >> 0) & 0xf);
+}
+
+//*****************************************************************************
+int32_t MAX77816::getStatus()
+{
+    int32_t rData;
+    
+    rData = readReg(REG_1);
+    if(rData< 0)
+        return rData;
+        
+    return ((rData >> 0) & 0xf);
+}
+
+//*****************************************************************************
+int32_t MAX77816::setVout(uint8_t reg_data)
+{
+    int32_t rData;
+    
+    rData = writeReg(REG_4, (reg_data & 0x7f));
+    return rData;
+}
+
+//*****************************************************************************
+int32_t MAX77816::setVoutH(uint8_t reg_data)
+{
+    int32_t rData;
+    
+    rData = writeReg(REG_5, (reg_data & 0x7f));
+    return rData;
+}
+
+//*****************************************************************************
+int32_t MAX77816::setIntMask(uint8_t reg_data)
+{
+    int32_t rData;
+    
+    rData = writeReg(REG_6, (reg_data & 0x7f));
+    return rData;
+}
+
+int32_t MAX77816::setIntMask()
+{
+    int32_t rData;
+    
+    rData = readReg(REG_6);
+    if(rData< 0)
+        return rData;
+        
+    return ((rData >> 0) & 0xf);
+}
+//*****************************************************************************
+int32_t MAX77816::getInt()
+{
+    int32_t rData;
+    
+    rData = readReg(REG_7);
+    if(rData< 0)
+        return rData;
+        
+    return ((rData >> 0) & 0xf);
+}