Ahmad Alkaff
/
CS3237
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Diff: MAX14720/MAX14720.h
- Revision:
- 0:7b5d37ca532f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX14720/MAX14720.h Wed Oct 09 09:38:09 2019 +0000
@@ -0,0 +1,355 @@
+/*******************************************************************************
+ * 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.
+ *******************************************************************************
+ */
+
+#ifndef _MAX14720_H_
+#define _MAX14720_H_
+
+#include "mbed.h"
+
+#define MAX14720_NO_ERROR 0
+#define MAX14720_ERROR -1
+
+#define MAX14720_BOOST_MIN_MV 2500
+#define MAX14720_BOOST_MAX_MV 5000
+#define MAX14720_BOOST_STEP_MV 100
+
+/**
+ * @brief MAX14720 Power-Management Solution Driver
+ *
+ * @details The MAX14720/MAX14750 are compact power-management solutions for
+ * space-constrained, battery-powered applications where size and efficiency are
+ * critical. Both devices integrate a power switch, a linear regulator, a buck
+ * regulator, and a buck-boost regulator.
+ * <br>https://www.maximintegrated.com/en/products/power/battery-management/MAX14720.html
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "MAX14720.h"
+ *
+ * // I2C Master 2
+ * I2C i2c2(I2C2_SDA, I2C2_SCL);
+ *
+ * #define I2C_ADDR_PMIC (0x54)
+ * MAX14720 max14720(&i2c2, I2C_ADDR_PMIC);
+ *
+ * DigitalOut led(LED1, 0);
+ * InterruptIn button(SW1);
+ *
+ * void turnOff()
+ * {
+ * max14720.shutdown();
+ * }
+ *
+ * int main()
+ * {
+ * button.fall(&turnOff);
+ *
+ * max14720.boostEn = MAX14720::BOOST_ENABLED;
+ * if (max14720.init() == MAX14720_ERROR) {
+ * printf("Error initializing MAX14720");
+ * }
+ *
+ * wait(1);
+ *
+ * while(1) {
+ * max14720.boostSetMode(MAX14720::BOOST_DISABLED);
+ * max14720.boostEn = MAX14720::BOOST_ENABLED;
+ * wait(0.5);
+ * max14720.boostSetVoltage(2500);
+ * wait(0.5);
+ * max14720.boostSetVoltage(5000);
+ * wait(0.5);
+ * }
+ * }
+ * @endcode
+ */
+class MAX14720
+{
+public:
+
+ /**
+ * @brief Register Addresses
+ * @details Enumerated MAX14720 register addresses
+ */
+ typedef enum {
+ REG_CHIP_ID = 0x00, ///< Chip ID
+ REG_CHIP_REV = 0x01, ///< Chip Revision
+ REG_BOOST_CDIV = 0x03, ///< Boost Clock Divider
+ REG_BOOST_ISET = 0x04, ///< Boost Peak Current
+ REG_BOOST_VSET = 0x05, ///< Boost Voltage Setting
+ REG_BOOST_CFG = 0x06, ///< Boost Configuration
+ REG_BUCK_VSET = 0x07, ///< Buck Voltage Setting
+ REG_BUCK_CFG = 0x08, ///< Buck Configuration
+ REG_BUCK_ISET = 0x09, ///< Buck Peak Current and Settings
+ REG_LDO_VSET = 0x0A, ///< LDO Voltage Setting
+ REG_LDO_CFG = 0x0B, ///< LDO Configuration
+ REG_SWITCH_CFG = 0x0C, ///< Switch Configuration
+ REG_BAT_TIME = 0x0D, ///< Battery Impedance Timing
+ REG_BAT_CFG = 0x0E, ///< Battery Impedance Configuration
+ REG_BAT_BCV = 0x0F, ///< Battery Cell Voltage
+ REG_BAT_OCV = 0x10, ///< Open Cell Voltage
+ REG_BAT_LCV = 0x11, ///< Loaded Cell Voltage
+ REG_MON_CFG = 0x19, ///< Monitor Multiplexer Configuration
+ REG_BOOT_CFG = 0x1A, ///< Boot Configuration
+ REG_PIN_STAT = 0x1B, ///< Pin Status
+ REG_BBB_EXTRA = 0x1C, ///< Buck/Buck-Boost Extra
+ REG_HANDSHK = 0x1D, ///< Power-On Handshake
+ REG_UVLO_CFG = 0x1E, ///< Under-Voltage Lock Out
+ REG_PWR_OFF = 0x1F, ///< Power Off Command
+ } registers_t;
+
+ /**
+ * @brief Boost Peak Current Settings
+ * @details Enumerated peak current settings for boost regulator
+ */
+ typedef enum {
+ BOOST_ISET_MIN, ///< Minimum On-Time
+ BOOST_ISET_50mA, ///< 50mA Peak Current
+ BOOST_ISET_100mA, ///< 100mA Peak Current
+ BOOST_ISET_150mA, ///< 150mA Peak Current
+ BOOST_ISET_200mA, ///< 200mA Peak Current
+ BOOST_ISET_250mA, ///< 250mA Peak Current
+ BOOST_ISET_300mA, ///< 300mA Peak Current
+ BOOST_ISET_350mA, ///< 350mA Peak Current
+ } boostISet_t;
+
+ /**
+ * @brief Boost Enable Mode
+ * @details Enumerated enable modes for boost regulator
+ */
+ typedef enum {
+ BOOST_DISABLED, ///< Boost Disabled
+ BOOST_ENABLED, ///< Boost Enabled
+ BOOST_EN_MPC, ///< Boost Enabled by MPC pin
+ } boostEn_t;
+
+ /**
+ * @brief Buck Operating Modes
+ * @details Enumerated operating modes for buck regulator
+ */
+ typedef enum {
+ BUCK_BURST, ///< Burst Mode Operation
+ BUCK_FPWM, ///< Forced PWM Operation
+ BUCK_MPC_FPWM, ///< MPC activated Forced PWM
+ } buckMd_t;
+
+ /**
+ * @brief Buck Peak Current Settings
+ * @details Enumerated peak current settings for buck regulator
+ */
+ typedef enum {
+ BUCK_ISET_50mA, ///< 50mA Peak Current
+ BUCK_ISET_100mA, ///< 100mA Peak Current
+ BUCK_ISET_150mA, ///< 150mA Peak Current
+ BUCK_ISET_200mA, ///< 200mA Peak Current
+ BUCK_ISET_250mA, ///< 250mA Peak Current
+ BUCK_ISET_300mA, ///< 300mA Peak Current
+ BUCK_ISET_350mA, ///< 350mA Peak Current
+ BUCK_ISET_400mA, ///< 400mA Peak Current
+ } buckISet_t;
+
+ /**
+ * @brief Monitor Configurations
+ * @details Enumerated configuration modes for monitor multiplexer
+ */
+ typedef enum {
+ MON_PULLDOWN = 0x00, ///< Pulled down by 100k Ohm
+ MON_HI_Z = 0x08, ///< High Impedance
+ MON_SWIN = 0x80, ///< SWIN Selected
+ MON_SWOUT = 0x81, ///< SWOUT Selected
+ MON_BIN = 0x82, ///< BIN Selected
+ MON_BOUT = 0x83, ///< BOUT Selected
+ MON_HVIN = 0x84, ///< HVIN Selected
+ MON_HVOUT = 0x85, ///< HVOUT Selected
+ MON_LIN = 0x86, ///< LIN Selected
+ MON_LOUT = 0x87, ///< LOUT Selected
+ } monCfg_t;
+
+ /**
+ * @brief Under-Voltage Lock Out Input
+ * @details Enumerated input selection options for UVLO
+ */
+ typedef enum {
+ LIN_UVLO, ///< LIN used to determine UVLO condition
+ BIN_UVLO, ///< BIN used to determine UVLO condition
+ } uvloIn_t;
+
+ /**
+ * MAX14720 constructor.
+ *
+ * @param sda mbed pin to use for SDA line of I2C interface.
+ * @param scl mbed pin to use for SCL line of I2C interface.
+ * @param slaveAddress Slave Address of the device.
+ */
+ MAX14720(PinName sda, PinName scl, int slaveAddress);
+
+ /**
+ * MAX14720 constructor.
+ *
+ * @param i2c I2C object to use.
+ * @param slaveAddress Slave Address of the device.
+ */
+ MAX14720(I2C *i2c, int slaveAddress);
+
+ /**
+ * MAX14720 destructor.
+ */
+ ~MAX14720();
+
+ /**
+ * @brief Initialize MAX14720
+ * @details Applies settings to MAX14720.
+ * Settings are stored in public variables.
+ * The variables are pre-loaded with the most common configuation.
+ * Assign new values to the public variables before calling init.
+ * This will update all the settings including the boost voltage
+ * from boostMillivolts and the boost enable mode from boostEn.
+ * @returns 0 if no errors, -1 if error.
+ */
+ int init();
+
+ /**
+ * @brief Set the Boost Voltage
+ * @details Sets the voltage for the boost regulator.
+ * The voltage is specified in millivolts.
+ * The MAX14720 cannot update the voltage when enabled.
+ * This function checks the local boostEn variable and if the
+ * regualtor is enabled it will send the disable command before
+ * sending the new voltage and re-enable the boost regulator after
+ * the new voltage is written.
+ * @param mV voltage for boost regualtor in millivolts
+ * @returns 0 if no errors, -1 if error.
+ */
+ int boostSetVoltage(int mV);
+
+ /**
+ * @brief Set Boost Enable Mode
+ * @details Sets the enable mode for the boost regulator
+ * @param mode The enable mode for the boost regulator
+ * @returns 0 if no errors, -1 if error.
+ */
+ int boostSetMode(boostEn_t mode);
+
+ /**
+ * @brief Configure Mon Pin
+ * @details Configures the operating mode of the monitor multiplexer
+ * @param monCfg The configuration mode for the monitor pin
+ * @returns 0 if no errors, -1 if error.
+ */
+ int monSet(monCfg_t monCfg);
+
+ /**
+ * @brief Shutdown
+ * @details Sends the command to turn off all supplies and put the part
+ * in battery saving shelf mode.
+ * @returns 0 if no errors, -1 if error.
+ */
+ int shutdown();
+
+ /**
+ * @brief Write Register
+ * @details Writes the given value to the specified register.
+ * Note, this function provides direct access to the registers
+ * without any awareness or effect on the settings stored in
+ * the public variables. This is used by the other functions to
+ * set the values inside the MAX14720. Calling this outside of the
+ * other functions can break the synchronization of the variables
+ * to the state of the MAX14720.
+ * @param reg The register to be written
+ * @param value The data to be written
+ * @returns 0 if no errors, -1 if error.
+ */
+ int writeReg(registers_t reg, char value);
+
+ /**
+ * @brief Read Register
+ * @details Reads from the specified register
+ * @param reg The register to be read
+ * @param value Pointer for where to store the data
+ * @returns 0 if no errors, -1 if error.
+ */
+ int readReg(registers_t reg, char *value);
+
+ /// Boost Clock Divider Enable: default 0 - Disabled, 1 - Enabled
+ bool clkDivEn;
+ /// Boost Clock Divider Setting: default 0, The clock is divided by this value +10 when enabled
+ int clkDivSet;
+ /// Boost Peak Current Setting: default BOOST_ISET_100mA
+ boostISet_t boostISet;
+ /// Boost Voltage in millivolts: default 3300
+ int boostMillivolts;
+ /// Boost Enable Mode: default BOOST_DISABLED
+ boostEn_t boostEn;
+ /// Boost EMI Setting: default 0 - EMI damping active (lower noise), 1 - Damping disabled (more efficient)
+ bool boostEMI;
+ /// Boost Inductor Setting: default 0 - 4.7uH, 1 - 3.3uH
+ bool boostInd;
+ /// Boost Hysteresis Off: default 0 - Hysteresis enabled (more efficient), 1 - Hysteresis off (lower voltage ripple)
+ bool boostHysOff;
+ /// Boost Passive Discharge: default 0 - Disabled, 1 - Enabled when boost disabled
+ bool boostPasDsc;
+ /// Boost Active Discharge: default 0 - Disabled, 1 - Enabled when boost disabled
+ bool boostActDsc;
+ /// Buck Operating Mode: default BUCK_BURST
+ buckMd_t buckMd;
+ /// Buck Fast Start: default 0 - Normal startup current limit, 1 - Double startup current for fast start
+ bool buckFst;
+ /// Buck Peak Current Setting: default BUCK_ISET_300mA
+ buckISet_t buckISet;
+ /// Buck Configuration: default 0 - For burst mode, 1 - For FPWM mode
+ bool buckCfg;
+ /// Buck Inductor Setting: default 0 - 2.2uH, 1 - 4.7uH
+ bool buckInd;
+ /// Buck Hysteresis Off: default 0 - Hysteresis enabled (more efficient), 1 - Hysteresis off (lower voltage ripple)
+ bool buckHysOff;
+ /// Buck Minimum On Time: default 1 - Disable deglitch delay (lower voltage ripple), 0 - Enable deglitch dealy (more efficient)
+ bool buckMinOT;
+ /// Buck Integrate: default 1 - Better load regulation at higher current (recommended for output capacitance >6uF), 0 - More stable operation with smaller output capacitor
+ bool buckInteg;
+ /// Buck Passive Discharge: default 0 - Disabled, 1 - Enabled when buck disabled
+ bool buckPasDsc;
+ /// Buck Active Discharge: default 0 - Disabled, 1 - Enabled when buck disabled
+ bool buckActDsc;
+ /// Buck Fet Scaling: default 0 - Full buck FET after soft start (more efficient for larger loads), 1 - Reduced buck FET while active (lower quiescent current for light loads)
+ bool buckFScl;
+
+private:
+ /// I2C pointer
+ I2C *i2c;
+ /// Is this object the owner of the I2C object
+ bool isOwner;
+ /// Device slave address
+ int slaveAddress;
+};
+
+#endif /* _MAX14720_H_ */
