Maxim Integrated / MAX77650

MAX77650 Driver

Dependents:   MAX32620FTHR_Pmic MAX32620FTHR_Pmic_Boot MAX32620FTHR_GPS_Tracker

Fork of MAX77650 by Jesse Marroquin

MAX77650.cpp@0:d29ae4cd4af7, 2018-04-24 (annotated)

Committer:
jessexm
Date:
Tue Apr 24 20:09:13 2018 +0000
Revision:
0:d29ae4cd4af7
Initial commit

Who changed what in which revision?

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jessexm 0:d29ae4cd4af7 1
jessexm 0:d29ae4cd4af7 2 /*******************************************************************************
jessexm 0:d29ae4cd4af7 3 * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
jessexm 0:d29ae4cd4af7 4 *
jessexm 0:d29ae4cd4af7 5 * Permission is hereby granted, free of charge, to any person obtaining a
jessexm 0:d29ae4cd4af7 6 * copy of this software and associated documentation files (the "Software"),
jessexm 0:d29ae4cd4af7 7 * to deal in the Software without restriction, including without limitation
jessexm 0:d29ae4cd4af7 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
jessexm 0:d29ae4cd4af7 9 * and/or sell copies of the Software, and to permit persons to whom the
jessexm 0:d29ae4cd4af7 10 * Software is furnished to do so, subject to the following conditions:
jessexm 0:d29ae4cd4af7 11 *
jessexm 0:d29ae4cd4af7 12 * The above copyright notice and this permission notice shall be included
jessexm 0:d29ae4cd4af7 13 * in all copies or substantial portions of the Software.
jessexm 0:d29ae4cd4af7 14 *
jessexm 0:d29ae4cd4af7 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
jessexm 0:d29ae4cd4af7 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
jessexm 0:d29ae4cd4af7 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
jessexm 0:d29ae4cd4af7 18 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
jessexm 0:d29ae4cd4af7 19 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
jessexm 0:d29ae4cd4af7 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
jessexm 0:d29ae4cd4af7 21 * OTHER DEALINGS IN THE SOFTWARE.
jessexm 0:d29ae4cd4af7 22 *
jessexm 0:d29ae4cd4af7 23 * Except as contained in this notice, the name of Maxim Integrated
jessexm 0:d29ae4cd4af7 24 * Products, Inc. shall not be used except as stated in the Maxim Integrated
jessexm 0:d29ae4cd4af7 25 * Products, Inc. Branding Policy.
jessexm 0:d29ae4cd4af7 26 *
jessexm 0:d29ae4cd4af7 27 * The mere transfer of this software does not imply any licenses
jessexm 0:d29ae4cd4af7 28 * of trade secrets, proprietary technology, copyrights, patents,
jessexm 0:d29ae4cd4af7 29 * trademarks, maskwork rights, or any other form of intellectual
jessexm 0:d29ae4cd4af7 30 * property whatsoever. Maxim Integrated Products, Inc. retains all
jessexm 0:d29ae4cd4af7 31 * ownership rights.
jessexm 0:d29ae4cd4af7 32 *******************************************************************************
jessexm 0:d29ae4cd4af7 33 */
jessexm 0:d29ae4cd4af7 34
jessexm 0:d29ae4cd4af7 35 #include "MAX77650.h"
jessexm 0:d29ae4cd4af7 36
jessexm 0:d29ae4cd4af7 37 #define SBB2_TV_MIN_MV 800
jessexm 0:d29ae4cd4af7 38 #define SBB2_TV_MAX_MV 3950
jessexm 0:d29ae4cd4af7 39 #define SBB2_TV_LSB_MV 50
jessexm 0:d29ae4cd4af7 40
jessexm 0:d29ae4cd4af7 41 //******************************************************************************
jessexm 0:d29ae4cd4af7 42 MAX77650::MAX77650(I2C &i2c, PinName pwrHldPin, int addr) :
jessexm 0:d29ae4cd4af7 43 i2c(i2c)
jessexm 0:d29ae4cd4af7 44 {
jessexm 0:d29ae4cd4af7 45 devAddr = addr;
jessexm 0:d29ae4cd4af7 46 pwrHld = new DigitalOut(pwrHldPin, 1);
jessexm 0:d29ae4cd4af7 47 }
jessexm 0:d29ae4cd4af7 48
jessexm 0:d29ae4cd4af7 49 //******************************************************************************
jessexm 0:d29ae4cd4af7 50 MAX77650::~MAX77650()
jessexm 0:d29ae4cd4af7 51 {
jessexm 0:d29ae4cd4af7 52 delete pwrHld;
jessexm 0:d29ae4cd4af7 53 }
jessexm 0:d29ae4cd4af7 54
jessexm 0:d29ae4cd4af7 55 //******************************************************************************
jessexm 0:d29ae4cd4af7 56 int MAX77650::readReg(reg_t reg, char *val)
jessexm 0:d29ae4cd4af7 57 {
jessexm 0:d29ae4cd4af7 58 char wbuf[] = { reg };
jessexm 0:d29ae4cd4af7 59
jessexm 0:d29ae4cd4af7 60 if (!(i2c.write(devAddr, wbuf, sizeof(wbuf), true))) {
jessexm 0:d29ae4cd4af7 61 if (!(i2c.read(devAddr, val, 1))) {
jessexm 0:d29ae4cd4af7 62 return MAX77650_NO_ERROR;
jessexm 0:d29ae4cd4af7 63 }
jessexm 0:d29ae4cd4af7 64 }
jessexm 0:d29ae4cd4af7 65
jessexm 0:d29ae4cd4af7 66 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 67 }
jessexm 0:d29ae4cd4af7 68
jessexm 0:d29ae4cd4af7 69 //******************************************************************************
jessexm 0:d29ae4cd4af7 70 int MAX77650::writeReg(reg_t reg, char val)
jessexm 0:d29ae4cd4af7 71 {
jessexm 0:d29ae4cd4af7 72 char wbuf[] = { reg, val };
jessexm 0:d29ae4cd4af7 73
jessexm 0:d29ae4cd4af7 74 if (!(i2c.write(devAddr, wbuf, sizeof(wbuf)))) {
jessexm 0:d29ae4cd4af7 75 return MAX77650_NO_ERROR;
jessexm 0:d29ae4cd4af7 76 }
jessexm 0:d29ae4cd4af7 77
jessexm 0:d29ae4cd4af7 78 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 79 }
jessexm 0:d29ae4cd4af7 80
jessexm 0:d29ae4cd4af7 81 //******************************************************************************
jessexm 0:d29ae4cd4af7 82 int MAX77650::writeReg(const char *buf, int len)
jessexm 0:d29ae4cd4af7 83 {
jessexm 0:d29ae4cd4af7 84 if (!(i2c.write(devAddr, buf, len))) {
jessexm 0:d29ae4cd4af7 85 return MAX77650_NO_ERROR;
jessexm 0:d29ae4cd4af7 86 }
jessexm 0:d29ae4cd4af7 87
jessexm 0:d29ae4cd4af7 88 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 89 }
jessexm 0:d29ae4cd4af7 90
jessexm 0:d29ae4cd4af7 91 //******************************************************************************
jessexm 0:d29ae4cd4af7 92 int MAX77650::cid(void) {
jessexm 0:d29ae4cd4af7 93 char rbuf[1];
jessexm 0:d29ae4cd4af7 94
jessexm 0:d29ae4cd4af7 95 if (readReg(CID, rbuf)) {
jessexm 0:d29ae4cd4af7 96 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 97 }
jessexm 0:d29ae4cd4af7 98
jessexm 0:d29ae4cd4af7 99 return *rbuf;
jessexm 0:d29ae4cd4af7 100 }
jessexm 0:d29ae4cd4af7 101
jessexm 0:d29ae4cd4af7 102 //******************************************************************************
jessexm 0:d29ae4cd4af7 103 int MAX77650::enableLDO(void)
jessexm 0:d29ae4cd4af7 104 {
jessexm 0:d29ae4cd4af7 105 char ade_flag[1];
jessexm 0:d29ae4cd4af7 106
jessexm 0:d29ae4cd4af7 107 if (readReg(CNFG_LDO_B, ade_flag)) {
jessexm 0:d29ae4cd4af7 108 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 109 }
jessexm 0:d29ae4cd4af7 110
jessexm 0:d29ae4cd4af7 111 *ade_flag &= 0x08;
jessexm 0:d29ae4cd4af7 112
jessexm 0:d29ae4cd4af7 113 return writeReg(CNFG_LDO_B, *ade_flag | 0x06);
jessexm 0:d29ae4cd4af7 114 }
jessexm 0:d29ae4cd4af7 115
jessexm 0:d29ae4cd4af7 116 //******************************************************************************
jessexm 0:d29ae4cd4af7 117 int MAX77650::disableLDO(void)
jessexm 0:d29ae4cd4af7 118 {
jessexm 0:d29ae4cd4af7 119 char ade_flag[1];
jessexm 0:d29ae4cd4af7 120
jessexm 0:d29ae4cd4af7 121 if (readReg(CNFG_LDO_B, ade_flag)) {
jessexm 0:d29ae4cd4af7 122 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 123 }
jessexm 0:d29ae4cd4af7 124
jessexm 0:d29ae4cd4af7 125 *ade_flag &= 0x08;
jessexm 0:d29ae4cd4af7 126
jessexm 0:d29ae4cd4af7 127 return writeReg(CNFG_LDO_B, *ade_flag | 0x04);
jessexm 0:d29ae4cd4af7 128 }
jessexm 0:d29ae4cd4af7 129
jessexm 0:d29ae4cd4af7 130 //******************************************************************************
jessexm 0:d29ae4cd4af7 131 int MAX77650::setSBB2VoltageMV(uint32_t tv_mv)
jessexm 0:d29ae4cd4af7 132 {
jessexm 0:d29ae4cd4af7 133 uint32_t tv_code;
jessexm 0:d29ae4cd4af7 134 char ip_code[1];
jessexm 0:d29ae4cd4af7 135
jessexm 0:d29ae4cd4af7 136 if ((tv_mv > SBB2_TV_MAX_MV) || (tv_mv < SBB2_TV_MIN_MV) || (tv_mv % SBB2_TV_LSB_MV)) {
jessexm 0:d29ae4cd4af7 137 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 138 }
jessexm 0:d29ae4cd4af7 139
jessexm 0:d29ae4cd4af7 140 tv_code = (tv_mv - SBB2_TV_MIN_MV) / SBB2_TV_LSB_MV;
jessexm 0:d29ae4cd4af7 141
jessexm 0:d29ae4cd4af7 142 if (readReg(CNFG_SBB2_A, ip_code)) {
jessexm 0:d29ae4cd4af7 143 return MAX77650_ERROR;
jessexm 0:d29ae4cd4af7 144 }
jessexm 0:d29ae4cd4af7 145
jessexm 0:d29ae4cd4af7 146 *ip_code &= 0xC0;
jessexm 0:d29ae4cd4af7 147
jessexm 0:d29ae4cd4af7 148 return writeReg(CNFG_SBB2_A, tv_code | *ip_code);
jessexm 0:d29ae4cd4af7 149 }
jessexm 0:d29ae4cd4af7 150
jessexm 0:d29ae4cd4af7 151 //******************************************************************************
jessexm 0:d29ae4cd4af7 152 int MAX77650::setSBB2Voltage(float tv_v)
jessexm 0:d29ae4cd4af7 153 {
jessexm 0:d29ae4cd4af7 154 return setSBB2VoltageMV(tv_v * 1000);
jessexm 0:d29ae4cd4af7 155 }
jessexm 0:d29ae4cd4af7 156
jessexm 0:d29ae4cd4af7 157 //******************************************************************************
jessexm 0:d29ae4cd4af7 158 void MAX77650::assertPowerHold(void)
jessexm 0:d29ae4cd4af7 159 {
jessexm 0:d29ae4cd4af7 160 pwrHld->write(1);
jessexm 0:d29ae4cd4af7 161 }
jessexm 0:d29ae4cd4af7 162
jessexm 0:d29ae4cd4af7 163 //******************************************************************************
jessexm 0:d29ae4cd4af7 164 void MAX77650::deassertPowerHold(void)
jessexm 0:d29ae4cd4af7 165 {
jessexm 0:d29ae4cd4af7 166 pwrHld->write(0);
jessexm 0:d29ae4cd4af7 167 }