Daniel Geonsi Jeong / max77816

MAX77816 Library. The MAX77816 is a high-current, high-efficiency buck-boost regulator targeting single-cell Li-ion battery powered applications. Please find more detail things on the website: https://www.maximintegrated.com/en/products/power/switching-regulators/MAX77816.html

max77816.cpp@1:7182e55f5f59, 2018-09-28 (annotated)

Committer:
daniel_gs_jeong
Date:
Fri Sep 28 09:54:34 2018 +0000
Revision:
1:7182e55f5f59
Parent:
0:c39030c3a7cf 
Fix Typo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
daniel_gs_jeong 0:c39030c3a7cf 1 /*******************************************************************************
daniel_gs_jeong 1:7182e55f5f59 2 * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved.
daniel_gs_jeong 0:c39030c3a7cf 3 *
daniel_gs_jeong 0:c39030c3a7cf 4 * Permission is hereby granted, free of charge, to any person obtaining a
daniel_gs_jeong 0:c39030c3a7cf 5 * copy of this software and associated documentation files (the "Software"),
daniel_gs_jeong 0:c39030c3a7cf 6 * to deal in the Software without restriction, including without limitation
daniel_gs_jeong 0:c39030c3a7cf 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
daniel_gs_jeong 0:c39030c3a7cf 8 * and/or sell copies of the Software, and to permit persons to whom the
daniel_gs_jeong 0:c39030c3a7cf 9 * Software is furnished to do so, subject to the following conditions:
daniel_gs_jeong 0:c39030c3a7cf 10 *
daniel_gs_jeong 0:c39030c3a7cf 11 * The above copyright notice and this permission notice shall be included
daniel_gs_jeong 0:c39030c3a7cf 12 * in all copies or substantial portions of the Software.
daniel_gs_jeong 0:c39030c3a7cf 13 *
daniel_gs_jeong 0:c39030c3a7cf 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
daniel_gs_jeong 0:c39030c3a7cf 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
daniel_gs_jeong 0:c39030c3a7cf 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
daniel_gs_jeong 0:c39030c3a7cf 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
daniel_gs_jeong 0:c39030c3a7cf 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
daniel_gs_jeong 0:c39030c3a7cf 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
daniel_gs_jeong 0:c39030c3a7cf 20 * OTHER DEALINGS IN THE SOFTWARE.
daniel_gs_jeong 0:c39030c3a7cf 21 *
daniel_gs_jeong 0:c39030c3a7cf 22 * Except as contained in this notice, the name of Maxim Integrated
daniel_gs_jeong 0:c39030c3a7cf 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
daniel_gs_jeong 0:c39030c3a7cf 24 * Products, Inc. Branding Policy.
daniel_gs_jeong 0:c39030c3a7cf 25 *
daniel_gs_jeong 0:c39030c3a7cf 26 * The mere transfer of this software does not imply any licenses
daniel_gs_jeong 0:c39030c3a7cf 27 * of trade secrets, proprietary technology, copyrights, patents,
daniel_gs_jeong 0:c39030c3a7cf 28 * trademarks, maskwork rights, or any other form of intellectual
daniel_gs_jeong 0:c39030c3a7cf 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
daniel_gs_jeong 0:c39030c3a7cf 30 * ownership rights.
daniel_gs_jeong 0:c39030c3a7cf 31 *******************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 32 */
daniel_gs_jeong 0:c39030c3a7cf 33 #include "max77816.h"
daniel_gs_jeong 0:c39030c3a7cf 34
daniel_gs_jeong 0:c39030c3a7cf 35 /***** Definitions *****/
daniel_gs_jeong 0:c39030c3a7cf 36 #define I2C_ADDR (0x18<<1)
daniel_gs_jeong 0:c39030c3a7cf 37
daniel_gs_jeong 0:c39030c3a7cf 38 //******************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 39 MAX77816::MAX77816(PinName sda, PinName scl)
daniel_gs_jeong 0:c39030c3a7cf 40 {
daniel_gs_jeong 0:c39030c3a7cf 41 i2c_ = new I2C(sda, scl);
daniel_gs_jeong 0:c39030c3a7cf 42 i2c_owner = true;
daniel_gs_jeong 0:c39030c3a7cf 43
daniel_gs_jeong 0:c39030c3a7cf 44 i2c_->frequency(400000);
daniel_gs_jeong 0:c39030c3a7cf 45 }
daniel_gs_jeong 0:c39030c3a7cf 46
daniel_gs_jeong 0:c39030c3a7cf 47 //******************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 48 MAX77816::MAX77816(I2C *i2c) :
daniel_gs_jeong 0:c39030c3a7cf 49 i2c_(i2c)
daniel_gs_jeong 0:c39030c3a7cf 50 {
daniel_gs_jeong 0:c39030c3a7cf 51 i2c_owner = false;
daniel_gs_jeong 0:c39030c3a7cf 52 }
daniel_gs_jeong 0:c39030c3a7cf 53
daniel_gs_jeong 0:c39030c3a7cf 54 //******************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 55 MAX77816::~MAX77816()
daniel_gs_jeong 0:c39030c3a7cf 56 {
daniel_gs_jeong 0:c39030c3a7cf 57 if(i2c_owner) {
daniel_gs_jeong 0:c39030c3a7cf 58 delete i2c_;
daniel_gs_jeong 0:c39030c3a7cf 59 }
daniel_gs_jeong 0:c39030c3a7cf 60 }
daniel_gs_jeong 0:c39030c3a7cf 61
daniel_gs_jeong 0:c39030c3a7cf 62 //******************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 63 int32_t MAX77816::init()
daniel_gs_jeong 0:c39030c3a7cf 64 {
daniel_gs_jeong 0:c39030c3a7cf 65 return 0;
daniel_gs_jeong 0:c39030c3a7cf 66 }
daniel_gs_jeong 0:c39030c3a7cf 67
daniel_gs_jeong 0:c39030c3a7cf 68 //******************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 69 int32_t MAX77816::writeReg(MAX77816::registers_t reg_addr, char reg_data)
daniel_gs_jeong 0:c39030c3a7cf 70 {
daniel_gs_jeong 0:c39030c3a7cf 71 char data[2];
daniel_gs_jeong 0:c39030c3a7cf 72
daniel_gs_jeong 0:c39030c3a7cf 73 data[0] = reg_addr;
daniel_gs_jeong 0:c39030c3a7cf 74 data[1] = reg_data;
daniel_gs_jeong 0:c39030c3a7cf 75 if (i2c_->write(I2C_ADDR, data, 2) != 0) {
daniel_gs_jeong 0:c39030c3a7cf 76 return -1;
daniel_gs_jeong 0:c39030c3a7cf 77 }
daniel_gs_jeong 0:c39030c3a7cf 78
daniel_gs_jeong 0:c39030c3a7cf 79 return 0;
daniel_gs_jeong 0:c39030c3a7cf 80 }
daniel_gs_jeong 0:c39030c3a7cf 81
daniel_gs_jeong 0:c39030c3a7cf 82 //******************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 83 int32_t MAX77816::readReg(MAX77816::registers_t reg_addr)
daniel_gs_jeong 0:c39030c3a7cf 84 {
daniel_gs_jeong 0:c39030c3a7cf 85 char data;
daniel_gs_jeong 0:c39030c3a7cf 86
daniel_gs_jeong 0:c39030c3a7cf 87 data = reg_addr;
daniel_gs_jeong 0:c39030c3a7cf 88 if (i2c_->write(I2C_ADDR, &data, 1, true) != 0) {
daniel_gs_jeong 0:c39030c3a7cf 89 return -1;
daniel_gs_jeong 0:c39030c3a7cf 90 }
daniel_gs_jeong 0:c39030c3a7cf 91
daniel_gs_jeong 0:c39030c3a7cf 92 if (i2c_->read(I2C_ADDR | 0x01, &data, 1) != 0) {
daniel_gs_jeong 0:c39030c3a7cf 93 return -1;
daniel_gs_jeong 0:c39030c3a7cf 94 }
daniel_gs_jeong 0:c39030c3a7cf 95
daniel_gs_jeong 0:c39030c3a7cf 96 return (0x0 + data);
daniel_gs_jeong 0:c39030c3a7cf 97 }
daniel_gs_jeong 0:c39030c3a7cf 98
daniel_gs_jeong 0:c39030c3a7cf 99
daniel_gs_jeong 0:c39030c3a7cf 100
daniel_gs_jeong 0:c39030c3a7cf 101 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 102 int32_t MAX77816::readBlock(MAX77816::registers_t startReg, MAX77816::registers_t stopReg, uint8_t *data)
daniel_gs_jeong 0:c39030c3a7cf 103 {
daniel_gs_jeong 0:c39030c3a7cf 104 int32_t rtnVal = -1;
daniel_gs_jeong 0:c39030c3a7cf 105 int32_t numBytes = ((stopReg - startReg) + 1);
daniel_gs_jeong 0:c39030c3a7cf 106 char packet[] = {static_cast<char>(startReg)};
daniel_gs_jeong 0:c39030c3a7cf 107
daniel_gs_jeong 0:c39030c3a7cf 108 if(i2c_->write(I2C_ADDR, packet, 1) == 0)
daniel_gs_jeong 0:c39030c3a7cf 109 {
daniel_gs_jeong 0:c39030c3a7cf 110 rtnVal = i2c_->read(I2C_ADDR | 0x01, reinterpret_cast<char *>(data), numBytes);
daniel_gs_jeong 0:c39030c3a7cf 111 }
daniel_gs_jeong 0:c39030c3a7cf 112
daniel_gs_jeong 0:c39030c3a7cf 113 return rtnVal;
daniel_gs_jeong 0:c39030c3a7cf 114 }
daniel_gs_jeong 0:c39030c3a7cf 115
daniel_gs_jeong 0:c39030c3a7cf 116
daniel_gs_jeong 0:c39030c3a7cf 117 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 118 int32_t MAX77816::writeBlock(MAX77816::registers_t startReg, MAX77816::registers_t stopReg, const uint8_t *data)
daniel_gs_jeong 0:c39030c3a7cf 119 {
daniel_gs_jeong 0:c39030c3a7cf 120 int32_t numBytes = ((stopReg - startReg) + 1);
daniel_gs_jeong 0:c39030c3a7cf 121 char packet[numBytes + 1];
daniel_gs_jeong 0:c39030c3a7cf 122
daniel_gs_jeong 0:c39030c3a7cf 123 packet[0] = static_cast<char>(startReg);
daniel_gs_jeong 0:c39030c3a7cf 124
daniel_gs_jeong 0:c39030c3a7cf 125 memcpy(packet + 1, data, numBytes);
daniel_gs_jeong 0:c39030c3a7cf 126
daniel_gs_jeong 0:c39030c3a7cf 127 return i2c_->write(I2C_ADDR, packet, sizeof(packet));
daniel_gs_jeong 0:c39030c3a7cf 128 }
daniel_gs_jeong 0:c39030c3a7cf 129
daniel_gs_jeong 0:c39030c3a7cf 130
daniel_gs_jeong 0:c39030c3a7cf 131 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 132 int32_t MAX77816::getVersion()
daniel_gs_jeong 0:c39030c3a7cf 133 {
daniel_gs_jeong 0:c39030c3a7cf 134 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 135
daniel_gs_jeong 0:c39030c3a7cf 136 rData = readReg(REG_0);
daniel_gs_jeong 0:c39030c3a7cf 137 if(rData< 0)
daniel_gs_jeong 0:c39030c3a7cf 138 return rData;
daniel_gs_jeong 0:c39030c3a7cf 139
daniel_gs_jeong 0:c39030c3a7cf 140 return ((rData >> 4) & 0x7);
daniel_gs_jeong 0:c39030c3a7cf 141 }
daniel_gs_jeong 0:c39030c3a7cf 142
daniel_gs_jeong 0:c39030c3a7cf 143
daniel_gs_jeong 0:c39030c3a7cf 144 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 145 int32_t MAX77816::getChipRevision()
daniel_gs_jeong 0:c39030c3a7cf 146 {
daniel_gs_jeong 0:c39030c3a7cf 147 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 148
daniel_gs_jeong 0:c39030c3a7cf 149 rData = readReg(REG_0);
daniel_gs_jeong 0:c39030c3a7cf 150 if(rData< 0)
daniel_gs_jeong 0:c39030c3a7cf 151 return rData;
daniel_gs_jeong 0:c39030c3a7cf 152
daniel_gs_jeong 0:c39030c3a7cf 153 return ((rData >> 0) & 0xf);
daniel_gs_jeong 0:c39030c3a7cf 154 }
daniel_gs_jeong 0:c39030c3a7cf 155
daniel_gs_jeong 0:c39030c3a7cf 156 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 157 int32_t MAX77816::getStatus()
daniel_gs_jeong 0:c39030c3a7cf 158 {
daniel_gs_jeong 0:c39030c3a7cf 159 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 160
daniel_gs_jeong 0:c39030c3a7cf 161 rData = readReg(REG_1);
daniel_gs_jeong 0:c39030c3a7cf 162 if(rData< 0)
daniel_gs_jeong 0:c39030c3a7cf 163 return rData;
daniel_gs_jeong 0:c39030c3a7cf 164
daniel_gs_jeong 0:c39030c3a7cf 165 return ((rData >> 0) & 0xf);
daniel_gs_jeong 0:c39030c3a7cf 166 }
daniel_gs_jeong 0:c39030c3a7cf 167
daniel_gs_jeong 0:c39030c3a7cf 168 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 169 int32_t MAX77816::setVout(uint8_t reg_data)
daniel_gs_jeong 0:c39030c3a7cf 170 {
daniel_gs_jeong 0:c39030c3a7cf 171 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 172
daniel_gs_jeong 0:c39030c3a7cf 173 rData = writeReg(REG_4, (reg_data & 0x7f));
daniel_gs_jeong 0:c39030c3a7cf 174 return rData;
daniel_gs_jeong 0:c39030c3a7cf 175 }
daniel_gs_jeong 0:c39030c3a7cf 176
daniel_gs_jeong 0:c39030c3a7cf 177 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 178 int32_t MAX77816::setVoutH(uint8_t reg_data)
daniel_gs_jeong 0:c39030c3a7cf 179 {
daniel_gs_jeong 0:c39030c3a7cf 180 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 181
daniel_gs_jeong 0:c39030c3a7cf 182 rData = writeReg(REG_5, (reg_data & 0x7f));
daniel_gs_jeong 0:c39030c3a7cf 183 return rData;
daniel_gs_jeong 0:c39030c3a7cf 184 }
daniel_gs_jeong 0:c39030c3a7cf 185
daniel_gs_jeong 0:c39030c3a7cf 186 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 187 int32_t MAX77816::setIntMask(uint8_t reg_data)
daniel_gs_jeong 0:c39030c3a7cf 188 {
daniel_gs_jeong 0:c39030c3a7cf 189 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 190
daniel_gs_jeong 0:c39030c3a7cf 191 rData = writeReg(REG_6, (reg_data & 0x7f));
daniel_gs_jeong 0:c39030c3a7cf 192 return rData;
daniel_gs_jeong 0:c39030c3a7cf 193 }
daniel_gs_jeong 0:c39030c3a7cf 194
daniel_gs_jeong 0:c39030c3a7cf 195 int32_t MAX77816::setIntMask()
daniel_gs_jeong 0:c39030c3a7cf 196 {
daniel_gs_jeong 0:c39030c3a7cf 197 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 198
daniel_gs_jeong 0:c39030c3a7cf 199 rData = readReg(REG_6);
daniel_gs_jeong 0:c39030c3a7cf 200 if(rData< 0)
daniel_gs_jeong 0:c39030c3a7cf 201 return rData;
daniel_gs_jeong 0:c39030c3a7cf 202
daniel_gs_jeong 0:c39030c3a7cf 203 return ((rData >> 0) & 0xf);
daniel_gs_jeong 0:c39030c3a7cf 204 }
daniel_gs_jeong 0:c39030c3a7cf 205 //*****************************************************************************
daniel_gs_jeong 0:c39030c3a7cf 206 int32_t MAX77816::getInt()
daniel_gs_jeong 0:c39030c3a7cf 207 {
daniel_gs_jeong 0:c39030c3a7cf 208 int32_t rData;
daniel_gs_jeong 0:c39030c3a7cf 209
daniel_gs_jeong 0:c39030c3a7cf 210 rData = readReg(REG_7);
daniel_gs_jeong 0:c39030c3a7cf 211 if(rData< 0)
daniel_gs_jeong 0:c39030c3a7cf 212 return rData;
daniel_gs_jeong 0:c39030c3a7cf 213
daniel_gs_jeong 0:c39030c3a7cf 214 return ((rData >> 0) & 0xf);
daniel_gs_jeong 0:c39030c3a7cf 215 }