Diff: MAX14690.cpp

Revision:

9:8fb54367ceb5

Parent:

8:2c3f2da51c5d

Child:

10:32c7e2ab67aa

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX14690.cpp	Thu Nov 10 16:06:11 2016 +0000
@@ -0,0 +1,227 @@
+/*******************************************************************************
+ * Copyright (C) 2016 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 "MAX14690.h"
+
+//******************************************************************************
+MAX14690::MAX14690(PinName sda, PinName scl, int slaveAddress) :
+    slaveAddress(slaveAddress)
+{
+    i2c = new I2C(sda,scl);
+    isOwner = true;
+    clkDivEn = false;
+    clkDivSet = 0;
+    boostISet = BOOST_ISET_100mA;
+    boostMillivolts = 3300;
+    boostEn = BOOST_DISABLED;
+    boostEMI = false;
+    boostInd = false;
+    boostHysOff = false;
+    boostPasDsc = false;
+    boostActDsc = false;
+    buckMd = BUCK_BURST;
+    buckFst = false;
+    buckISet = BUCK_ISET_300mA;
+    buckCfg = false;
+    buckInd = false;
+    buckHysOff = true;
+    buckMinOT = true;
+    buckInteg = true;
+    buckPasDsc = false;
+    buckActDsc = false;
+    buckFScl = false;
+}
+//******************************************************************************
+MAX14690::MAX14690(I2C *i2c, int slaveAddress) :
+    slaveAddress(slaveAddress)
+{
+    this->i2c = i2c;
+    isOwner = false;
+    clkDivEn = false;
+    clkDivSet = 0;
+    boostISet = BOOST_ISET_100mA;
+    boostMillivolts = 3300;
+    boostEn = BOOST_DISABLED;
+    boostEMI = false;
+    boostInd = false;
+    boostHysOff = false;
+    boostPasDsc = false;
+    boostActDsc = false;
+    buckMd = BUCK_BURST;
+    buckFst = false;
+    buckISet = BUCK_ISET_300mA;
+    buckCfg = false;
+    buckInd = false;
+    buckHysOff = true;
+    buckMinOT = true;
+    buckInteg = true;
+    buckPasDsc = false;
+    buckActDsc = false;
+    buckFScl = false;
+}
+
+//******************************************************************************
+MAX14690::~MAX14690()
+{
+    if (isOwner == true) {
+        delete i2c;
+    }
+}
+
+//******************************************************************************
+int MAX14690::boostSetMode(boostEn_t mode)
+{
+    char data;
+
+    boostEn = mode;
+    data = (boostEn << 3) | (boostEMI << 1) | (boostInd);
+    return writeReg(REG_BOOST_CFG, data);
+}
+
+//******************************************************************************
+int MAX14690::boostSetVoltage(int mV)
+{
+    char data;
+
+    if ((MAX14690_BOOST_MIN_MV <= mV) && (mV <= MAX14690_BOOST_MAX_MV)) {
+        boostMillivolts = mV;
+        data = (mV - MAX14690_BOOST_MIN_MV) / MAX14690_BOOST_STEP_MV;
+    } else {
+        return MAX14690_ERROR;
+    }
+
+    if (boostEn == BOOST_ENABLED) {
+        if (writeReg(REG_BOOST_CFG, 0x00) != MAX14690_NO_ERROR) {
+            return MAX14690_ERROR;
+        }
+    }
+
+    if (writeReg(REG_BOOST_VSET, data) != MAX14690_NO_ERROR) {
+        return MAX14690_ERROR;
+    }
+
+    if (boostEn == BOOST_ENABLED) {
+        data = (boostEn << 3) | (boostEMI << 1) | (boostInd);
+        if (writeReg(REG_BOOST_CFG, data) != MAX14690_NO_ERROR) {
+            return MAX14690_ERROR;
+        }
+    }
+
+    return MAX14690_NO_ERROR;
+}
+
+//******************************************************************************
+int MAX14690::init()
+{
+    char data;
+
+    data = (clkDivEn << 7) | (clkDivSet);
+    if (writeReg(REG_BOOST_CDIV, data) != MAX14690_NO_ERROR) {
+        return MAX14690_ERROR;
+    }
+
+    data = (boostISet);
+    if (writeReg(REG_BOOST_ISET, data) != MAX14690_NO_ERROR) {
+        return MAX14690_ERROR;
+    }
+
+    if ((MAX14690_BOOST_MIN_MV <= boostMillivolts) &&
+        (boostMillivolts <= MAX14690_BOOST_MAX_MV)) {
+        data = (boostMillivolts - MAX14690_BOOST_MIN_MV) / MAX14690_BOOST_STEP_MV;
+        if (writeReg(REG_BOOST_VSET, data) != MAX14690_NO_ERROR) {
+            return MAX14690_ERROR;
+        }
+    } else {
+        return MAX14690_ERROR;
+    }
+
+    data = (buckMd << 1) | (buckFst);
+    if (writeReg(REG_BUCK_CFG, data) != MAX14690_NO_ERROR) {
+        return MAX14690_ERROR;
+    }
+
+    data = (boostHysOff << 7) | (boostPasDsc << 6) | (boostActDsc << 5) |
+           (buckPasDsc << 2) | (buckActDsc << 1) | (buckFScl);
+    if (writeReg(REG_BBB_EXTRA, data) != MAX14690_NO_ERROR) {
+        return MAX14690_ERROR;
+    }
+
+    // Write Boost Enable Register Last
+    data = (boostEn << 3) | (boostEMI << 1) | (boostInd);
+    if (writeReg(REG_BOOST_CFG, data) != MAX14690_NO_ERROR) {
+        return MAX14690_ERROR;
+    }
+
+    return MAX14690_NO_ERROR;
+}
+
+//******************************************************************************
+int MAX14690::monSet(monCfg_t monCfg)
+{
+    return writeReg(REG_MON_CFG, monCfg);
+}
+
+//******************************************************************************
+int MAX14690::shutdown()
+{
+    return writeReg(REG_PWR_OFF, 0xB2);
+}
+
+
+//******************************************************************************
+int MAX14690::writeReg(registers_t reg,  char value)
+{
+    char cmdData[2] = { (char)reg, value };
+
+    if (i2c->write(slaveAddress, cmdData, sizeof(cmdData)) != 0) {
+        return MAX14690_ERROR;
+    }
+
+    return MAX14690_NO_ERROR;
+}
+
+//******************************************************************************
+int MAX14690::readReg(registers_t reg, char *value)
+{
+    char cmdData[1] = { (char)reg };
+
+    if (i2c->write(slaveAddress, cmdData, sizeof(cmdData)) != 0) {
+        return MAX14690_ERROR;
+    }
+
+    if (i2c->read(slaveAddress, value, 1) != 0) {
+        return MAX14690_ERROR;
+    }
+
+    return MAX14690_NO_ERROR;
+}