Revision 0:d29ae4cd4af7, committed 2018-04-24

Comitter:

jessexm

Date:

Tue Apr 24 20:09:13 2018 +0000

Commit message:

Initial commit

Changed in this revision

diff -r 000000000000 -r d29ae4cd4af7 MAX77650.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX77650.cpp	Tue Apr 24 20:09:13 2018 +0000
@@ -0,0 +1,167 @@
+
+/*******************************************************************************
+ * Copyright (C) 2018 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 "MAX77650.h"
+
+#define SBB2_TV_MIN_MV 800
+#define SBB2_TV_MAX_MV 3950
+#define SBB2_TV_LSB_MV 50
+
+//******************************************************************************
+MAX77650::MAX77650(I2C &i2c, PinName pwrHldPin, int addr) :
+    i2c(i2c)
+{
+    devAddr = addr;
+    pwrHld = new DigitalOut(pwrHldPin, 1);
+}
+
+//******************************************************************************
+MAX77650::~MAX77650()
+{
+    delete pwrHld;
+}
+
+//******************************************************************************
+int MAX77650::readReg(reg_t reg, char *val)
+{
+    char wbuf[] = { reg };
+
+    if (!(i2c.write(devAddr, wbuf, sizeof(wbuf), true))) {
+        if (!(i2c.read(devAddr, val, 1))) {
+            return MAX77650_NO_ERROR;
+        }
+    }
+
+    return MAX77650_ERROR;
+}
+
+//******************************************************************************
+int MAX77650::writeReg(reg_t reg, char val)
+{
+    char wbuf[] = { reg, val };
+
+    if (!(i2c.write(devAddr, wbuf, sizeof(wbuf)))) {
+        return MAX77650_NO_ERROR;
+    }
+
+    return MAX77650_ERROR;
+}
+
+//******************************************************************************
+int MAX77650::writeReg(const char *buf, int len)
+{
+    if (!(i2c.write(devAddr, buf, len))) {
+        return MAX77650_NO_ERROR;
+    }
+
+    return MAX77650_ERROR;
+}
+
+//******************************************************************************
+int MAX77650::cid(void) {
+    char rbuf[1];
+
+    if (readReg(CID, rbuf)) {
+        return MAX77650_ERROR;
+    }
+
+    return *rbuf;
+}
+
+//******************************************************************************
+int MAX77650::enableLDO(void)
+{
+    char ade_flag[1];
+
+    if (readReg(CNFG_LDO_B, ade_flag)) {
+        return MAX77650_ERROR;
+    }
+
+    *ade_flag &= 0x08;
+
+    return writeReg(CNFG_LDO_B, *ade_flag | 0x06);
+}
+
+//******************************************************************************
+int MAX77650::disableLDO(void)
+{
+    char ade_flag[1];
+
+    if (readReg(CNFG_LDO_B, ade_flag)) {
+        return MAX77650_ERROR;
+    }
+
+    *ade_flag &= 0x08;
+
+    return writeReg(CNFG_LDO_B, *ade_flag | 0x04);
+}
+
+//******************************************************************************
+int MAX77650::setSBB2VoltageMV(uint32_t tv_mv)
+{
+    uint32_t tv_code;
+    char ip_code[1];
+
+    if ((tv_mv > SBB2_TV_MAX_MV) || (tv_mv < SBB2_TV_MIN_MV) || (tv_mv % SBB2_TV_LSB_MV)) {
+        return MAX77650_ERROR;
+    }
+
+    tv_code = (tv_mv - SBB2_TV_MIN_MV) / SBB2_TV_LSB_MV;
+
+    if (readReg(CNFG_SBB2_A, ip_code)) {
+        return MAX77650_ERROR;
+    }
+
+    *ip_code &= 0xC0;
+
+    return writeReg(CNFG_SBB2_A, tv_code | *ip_code);
+}
+
+//******************************************************************************
+int MAX77650::setSBB2Voltage(float tv_v)
+{
+    return setSBB2VoltageMV(tv_v * 1000);
+}
+
+//******************************************************************************
+void MAX77650::assertPowerHold(void)
+{
+    pwrHld->write(1);
+}
+
+//******************************************************************************
+void MAX77650::deassertPowerHold(void)
+{
+    pwrHld->write(0);
+}

diff -r 000000000000 -r d29ae4cd4af7 MAX77650.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX77650.h	Tue Apr 24 20:09:13 2018 +0000
@@ -0,0 +1,264 @@
+/*******************************************************************************
+ * Copyright (C) 2018 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 _MAX77650_H_
+#define _MAX77650_H_
+
+#include "mbed.h"
+
+#define MAX77650_NO_ERROR 0
+#define MAX77650_ERROR    -1
+
+#define MAX77650_I2C_ADDRESS 0x90
+
+#define MAX77650_CID 0x78
+
+/**
+ * @brief MAX77650 Ultra-Low Power PMIC with 3-Output SIMO and Charger
+ *
+ * @details The MAX77650/MAX77651 provide highly-integrated battery
+ * charging and power supply solutions for low-power wearable applications
+ * where size and efficiency are critical.
+ * <br>https://www.maximintegrated.com/en/products/power/battery-management/MAX77650.html
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "MAX77650.h"
+ *
+ * // Configure LED to rotate colors
+ * static const char ledRotate[] = {
+ *     MAX77650::CNFG_LED0_A,
+ *     0x44, 0x44,  0x44,
+ *     0x17, 0x37,  0x77,
+ *     0x01,
+ * };
+ *
+ * I2C i2c2(I2C2_SDA, I2C2_SCL);
+ *
+ * MAX77650 max77650(i2c2);
+ *
+ * int main()
+ * {
+ *     // Turn off Low-Dropout Linear Regulator
+ *     max77650.disableLDO();
+ *
+ *     // Set SBB supply 2 at 3.3V
+ *     max77650.setSBB2Voltage(3.3f);
+ *
+ *     // Configure LED current sinks
+ *     max77650.writeReg(ledRotate, sizeof(ledRotate));
+ *
+ *     while(1) ;
+ *
+ * }
+ * @endcode
+ */
+
+class MAX77650
+{
+public:
+
+    /**
+     * @brief   Register Addresses
+     * @details Enumerated MAX77650 register addresses
+     */
+    typedef enum {
+        CNFG_GLBL    = 0x10,    // Global Configuration
+        INT_GLBL     = 0x00,    // Interrupt Status
+        INTM_GLBL    = 0x06,    // Interrupt Mask
+        STAT_GLBL    = 0x05,    // Global Status
+        ERCFLAG      = 0x04,    // Flags
+        CNFG_GPIO    = 0x12,    // GPIO Configuration
+        CID          = 0x11,    // Chip Identification Code
+        INT_CHG      = 0x01,    // Charger Interrupt Status
+        INT_M_CHG    = 0x07,    // Charger Interrupt Mask
+        STAT_CHG_A   = 0x02,    // Charger Status A
+        STAT_CHG_B   = 0x03,    // Charger Status B
+        CNFG_CHG_A   = 0x18,    // Charger Configuration A
+        CNFG_CHG_B   = 0x19,    // Charger Configuration B
+        CNFG_CHG_C   = 0x1A,    // Charger Configuration C
+        CNFG_CHG_D   = 0x1B,    // Charger Configuration D
+        CNFG_CHG_E   = 0x1C,    // Charger Configuration E
+        CNFG_CHG_F   = 0x1D,    // Charger Configuration F
+        CNFG_CHG_G   = 0x1E,    // Charger Configuration G
+        CNFG_CHG_H   = 0x1F,    // Charger Configuration H
+        CNFG_CHG_I   = 0x20,    // Charger Configuration I
+        CNFG_LDO_A   = 0x38,    // LDO Configuration A
+        CNFG_LDO_B   = 0x39,    // LDO Configuration B
+        CNFG_SBB_TOP = 0x28,    // SIMO Buck-Boost Configuration
+        CNFG_SBB0_A  = 0x29,    // SIMO Buck-Boost 0 Configuration A
+        CNFG_SBB0_B  = 0x2A,    // SIMO Buck-Boost 0 Configuration B
+        CNFG_SBB1_A  = 0x2B,    // SIMO Buck-Boost 1 Configuration A
+        CNFG_SBB1_B  = 0x2C,    // SIMO Buck-Boost 1 Configuration B
+        CNFG_SBB2_A  = 0x2D,    // SIMO Buck-Boost 2 Configuration A
+        CNFG_SBB2_B  = 0x2E,    // SIMO Buck-Boost 2 Configuration B
+        CNFG_LED0_A  = 0x40,    // LED 0 Configuration A
+        CNFG_LED0_B  = 0x43,    // LED 0 Configuration B
+        CNFG_LED1_A  = 0x41,    // LED 1 Configuration A
+        CNFG_LED1_B  = 0x44,    // LED 1 Configuration B
+        CNFG_LED2_A  = 0x42,    // LED 2 Configuration A
+        CNFG_LED2_B  = 0x45,    // LED 2 Configuration A
+        CNFG_LED_TOP = 0x46     // LED Configuration
+    } reg_t;
+
+    /**
+     * @brief   Global Configuration settings
+     * @details Enumerated global configuration settings
+     */
+    typedef enum {
+        SBIA_LPM    = 0x20,
+        SBIA_EN     = 0x10,
+        NEN_PUSH    = 0x00,
+        NEN_SLIDE   = 0x08,
+        DBEN_100_US = 0x00,
+        DBEN_30_MS  = 0x04,
+        SFT_OFF     = 0x02,
+        SFT_CRST    = 0x01,
+    } cnfg_gbl_t;
+
+    /**
+     * @brief   Interrupt Enable Flags
+     * @details Enumerated interrupt enable flags
+     */
+    typedef enum {
+        DOD =      0x40,
+        TJAL_2 =   0x20,
+        TJAL_1 =   0x10,
+        NEN_RISE = 0x08,
+        NEN_FALL = 0x04,
+        GPI_RISE = 0x02,
+        GPI_FALL = 0x01,
+    } intm_glbl_t;
+
+    /**
+     * MAX77650 constructor.
+     *
+     * @param i2c I2C object to use.
+     * @param pwrHldPin Pin power hold input is connected to.
+     * @param slaveAddress Slave Address of the device.
+     */
+    MAX77650(I2C &i2c, PinName pwrHldPin = NC, int addr = MAX77650_I2C_ADDRESS);
+
+    /**
+     * MAX77650 destructor.
+     */
+    ~MAX77650();
+
+    /**
+     * @brief   Read Register
+     * @details Reads from the specified register
+     * @param   reg The register to be read
+     * @param   val Pointer for where to store the data
+     * @returns 0 if no errors, -1 if error.
+     */
+    int readReg(reg_t reg, char *val);
+
+    /**
+     * @brief   Write Register
+     * @details Writes the given value to the specified register.
+     * @param   reg The register to be written
+     * @param   val The data to be written
+     * @returns 0 if no errors, -1 if error.
+     */
+    int writeReg(reg_t reg, char val);
+
+    /**
+     * @brief   Write Register
+     * @details Writes the given value(s) beginning with
+     * the register specified in the first buffer entry.
+     * @param   buf The register and data to be written
+     * @param   len The buffer length including starting register and data to be written
+     * @returns 0 if no errors, -1 if error.
+     */
+    int writeReg(const char *buf, int len);
+
+    /**
+     * @brief   Read the CID
+     * @details Read and return Chip Identification Code register value
+     * @returns CID if no errors, -1 if error.
+     */
+    int cid(void);
+
+    /**
+     * @brief   Enable LDO
+     * @details Enables LDO
+     * @returns 0 if no errors, -1 if error.
+     */
+    int enableLDO(void);
+
+    /**
+     * @brief   Disable LDO
+     * @details Disables LDO
+     * @returns 0 if no errors, -1 if error.
+     */
+    int disableLDO(void);
+
+    /**
+     * @brief   Set SBB 2 target voltage
+     * @details Select SBB 2 target output voltage.
+     * @param   tv_mv The target voltage selection in milli-volts
+     * @returns 0 if no errors, -1 if error.
+     */
+    int setSBB2VoltageMV(uint32_t tv_mv);
+
+    /**
+     * @brief   Set SBB 2 target voltage
+     * @details Select SBB 2 target output voltage.
+     * @param   tv_v The target voltage selection in volts
+     * @returns 0 if no errors, -1 if error.
+     */
+    int setSBB2Voltage(float tv_v);
+
+    /**
+     * @brief   Assert Power Hold input
+     * @details Asserts Power Hold input.
+     * @param   pin The pin connected to Power Hold input
+     * @returns 0 if no errors, -1 if error.
+     */
+    void assertPowerHold(void);
+
+    /**
+     * @brief   Deassert Power Hold input
+     * @details Deasserts Power Hold input.
+     * @param   pin The pin connected to Power Hold input
+     * @returns 0 if no errors, -1 if error.
+     */
+    void deassertPowerHold(void);
+
+private:
+    I2C &i2c;
+    int devAddr;
+    DigitalOut *pwrHld;
+};
+
+#endif