The MAX77734 is a tiny PMIC for applications where size and simplicity are critical. The IC integrates a linear-mode Li+ battery charger, low-dropout linear regulator (LDO), analog multiplexer, and dual-channel current sink driver. Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX77734.pdf Applications ● Hearables: Headsets, Headphones, Earbuds ● Fitness Bands and other Bluetooth Wearables ● Action Cameras, Wearable/Body Cameras ● Low-Power Internet of Things (IoT) Gadgets
The MAX77734 is a tiny PMIC for applications where size and simplicity are critical. The IC integrates a linear-mode Li+ battery charger, low-dropout linear regulator (LDO), analog multiplexer, and dual-channel current sink driver.
Applications
● Hearables: Headsets, Headphones, Earbuds
● Fitness Bands and other Bluetooth Wearables
● Action Cameras, Wearable/Body Cameras
● Low-Power Internet of Things (IoT) Gadgets
Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX77734.pdf
EVKit: https://www.maximintegrated.com/en/products/power/battery-management/MAX77734EVKIT.html
max77734.cpp@0:2726f8e71192, 2018-12-27 (annotated)
- Committer:
- daniel_gs_jeong
- Date:
- Thu Dec 27 04:59:28 2018 +0000
- Revision:
- 0:2726f8e71192
The 1st version of MAX77734, a tiny PMIC for applications where size; and simplicity are critical.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
daniel_gs_jeong | 0:2726f8e71192 | 1 | /******************************************************************************* |
daniel_gs_jeong | 0:2726f8e71192 | 2 | * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved. |
daniel_gs_jeong | 0:2726f8e71192 | 3 | * |
daniel_gs_jeong | 0:2726f8e71192 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
daniel_gs_jeong | 0:2726f8e71192 | 5 | * copy of this software and associated documentation files (the "Software"), |
daniel_gs_jeong | 0:2726f8e71192 | 6 | * to deal in the Software without restriction, including without limitation |
daniel_gs_jeong | 0:2726f8e71192 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
daniel_gs_jeong | 0:2726f8e71192 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
daniel_gs_jeong | 0:2726f8e71192 | 9 | * Software is furnished to do so, subject to the following conditions: |
daniel_gs_jeong | 0:2726f8e71192 | 10 | * |
daniel_gs_jeong | 0:2726f8e71192 | 11 | * The above copyright notice and this permission notice shall be included |
daniel_gs_jeong | 0:2726f8e71192 | 12 | * in all copies or substantial portions of the Software. |
daniel_gs_jeong | 0:2726f8e71192 | 13 | * |
daniel_gs_jeong | 0:2726f8e71192 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
daniel_gs_jeong | 0:2726f8e71192 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
daniel_gs_jeong | 0:2726f8e71192 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
daniel_gs_jeong | 0:2726f8e71192 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
daniel_gs_jeong | 0:2726f8e71192 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
daniel_gs_jeong | 0:2726f8e71192 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
daniel_gs_jeong | 0:2726f8e71192 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
daniel_gs_jeong | 0:2726f8e71192 | 21 | * |
daniel_gs_jeong | 0:2726f8e71192 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
daniel_gs_jeong | 0:2726f8e71192 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
daniel_gs_jeong | 0:2726f8e71192 | 24 | * Products, Inc. Branding Policy. |
daniel_gs_jeong | 0:2726f8e71192 | 25 | * |
daniel_gs_jeong | 0:2726f8e71192 | 26 | * The mere transfer of this software does not imply any licenses |
daniel_gs_jeong | 0:2726f8e71192 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
daniel_gs_jeong | 0:2726f8e71192 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
daniel_gs_jeong | 0:2726f8e71192 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
daniel_gs_jeong | 0:2726f8e71192 | 30 | * ownership rights. |
daniel_gs_jeong | 0:2726f8e71192 | 31 | ******************************************************************************* |
daniel_gs_jeong | 0:2726f8e71192 | 32 | */ |
daniel_gs_jeong | 0:2726f8e71192 | 33 | #include "max77734.h" |
daniel_gs_jeong | 0:2726f8e71192 | 34 | |
daniel_gs_jeong | 0:2726f8e71192 | 35 | /***** Definitions *****/ |
daniel_gs_jeong | 0:2726f8e71192 | 36 | #define I2C_ADDR (0x48<<1) |
daniel_gs_jeong | 0:2726f8e71192 | 37 | |
daniel_gs_jeong | 0:2726f8e71192 | 38 | //****************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 39 | MAX77734::MAX77734(PinName sda, PinName scl) |
daniel_gs_jeong | 0:2726f8e71192 | 40 | { |
daniel_gs_jeong | 0:2726f8e71192 | 41 | i2c_ = new I2C(sda, scl); |
daniel_gs_jeong | 0:2726f8e71192 | 42 | i2c_owner = true; |
daniel_gs_jeong | 0:2726f8e71192 | 43 | |
daniel_gs_jeong | 0:2726f8e71192 | 44 | i2c_->frequency(400000); |
daniel_gs_jeong | 0:2726f8e71192 | 45 | } |
daniel_gs_jeong | 0:2726f8e71192 | 46 | |
daniel_gs_jeong | 0:2726f8e71192 | 47 | //****************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 48 | MAX77734::MAX77734(I2C *i2c) : |
daniel_gs_jeong | 0:2726f8e71192 | 49 | i2c_(i2c) |
daniel_gs_jeong | 0:2726f8e71192 | 50 | { |
daniel_gs_jeong | 0:2726f8e71192 | 51 | i2c_owner = false; |
daniel_gs_jeong | 0:2726f8e71192 | 52 | } |
daniel_gs_jeong | 0:2726f8e71192 | 53 | |
daniel_gs_jeong | 0:2726f8e71192 | 54 | //****************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 55 | MAX77734::~MAX77734() |
daniel_gs_jeong | 0:2726f8e71192 | 56 | { |
daniel_gs_jeong | 0:2726f8e71192 | 57 | if(i2c_owner) { |
daniel_gs_jeong | 0:2726f8e71192 | 58 | delete i2c_; |
daniel_gs_jeong | 0:2726f8e71192 | 59 | } |
daniel_gs_jeong | 0:2726f8e71192 | 60 | } |
daniel_gs_jeong | 0:2726f8e71192 | 61 | |
daniel_gs_jeong | 0:2726f8e71192 | 62 | //****************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 63 | int32_t MAX77734::init() |
daniel_gs_jeong | 0:2726f8e71192 | 64 | { |
daniel_gs_jeong | 0:2726f8e71192 | 65 | // Clear Mask |
daniel_gs_jeong | 0:2726f8e71192 | 66 | interrupt_isr(); |
daniel_gs_jeong | 0:2726f8e71192 | 67 | |
daniel_gs_jeong | 0:2726f8e71192 | 68 | // set INTM_GLBL: masked all interrupt(Chip Reset Value) |
daniel_gs_jeong | 0:2726f8e71192 | 69 | i2c_update_byte(REG_INTM_GLBL, 0x7c, 0x7c); |
daniel_gs_jeong | 0:2726f8e71192 | 70 | |
daniel_gs_jeong | 0:2726f8e71192 | 71 | // set INTM_CHG: masked all interrupt(Chip Reset Value) |
daniel_gs_jeong | 0:2726f8e71192 | 72 | i2c_update_byte(REG_INTM_CHG, 0x7f, 0x7f); |
daniel_gs_jeong | 0:2726f8e71192 | 73 | |
daniel_gs_jeong | 0:2726f8e71192 | 74 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 75 | } |
daniel_gs_jeong | 0:2726f8e71192 | 76 | |
daniel_gs_jeong | 0:2726f8e71192 | 77 | //****************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 78 | int32_t MAX77734::i2c_write_byte(MAX77734::REG_TYPE reg_addr, char reg_data) |
daniel_gs_jeong | 0:2726f8e71192 | 79 | { |
daniel_gs_jeong | 0:2726f8e71192 | 80 | char data[2]; |
daniel_gs_jeong | 0:2726f8e71192 | 81 | |
daniel_gs_jeong | 0:2726f8e71192 | 82 | data[0] = reg_addr; |
daniel_gs_jeong | 0:2726f8e71192 | 83 | data[1] = reg_data; |
daniel_gs_jeong | 0:2726f8e71192 | 84 | if (i2c_->write(I2C_ADDR, data, 2) != 0) { |
daniel_gs_jeong | 0:2726f8e71192 | 85 | return -1; |
daniel_gs_jeong | 0:2726f8e71192 | 86 | } |
daniel_gs_jeong | 0:2726f8e71192 | 87 | |
daniel_gs_jeong | 0:2726f8e71192 | 88 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 89 | } |
daniel_gs_jeong | 0:2726f8e71192 | 90 | |
daniel_gs_jeong | 0:2726f8e71192 | 91 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 92 | int32_t MAX77734::i2c_write_bytes(MAX77734::REG_TYPE startReg, |
daniel_gs_jeong | 0:2726f8e71192 | 93 | MAX77734::REG_TYPE stopReg, |
daniel_gs_jeong | 0:2726f8e71192 | 94 | const uint8_t *data) |
daniel_gs_jeong | 0:2726f8e71192 | 95 | { |
daniel_gs_jeong | 0:2726f8e71192 | 96 | int32_t numBytes = ((stopReg - startReg) + 1); |
daniel_gs_jeong | 0:2726f8e71192 | 97 | char packet[numBytes + 1]; |
daniel_gs_jeong | 0:2726f8e71192 | 98 | |
daniel_gs_jeong | 0:2726f8e71192 | 99 | packet[0] = static_cast<char>(startReg); |
daniel_gs_jeong | 0:2726f8e71192 | 100 | memcpy(packet + 1, data, numBytes); |
daniel_gs_jeong | 0:2726f8e71192 | 101 | |
daniel_gs_jeong | 0:2726f8e71192 | 102 | return i2c_->write(I2C_ADDR, packet, sizeof(packet)); |
daniel_gs_jeong | 0:2726f8e71192 | 103 | } |
daniel_gs_jeong | 0:2726f8e71192 | 104 | |
daniel_gs_jeong | 0:2726f8e71192 | 105 | //****************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 106 | int32_t MAX77734::i2c_read_byte(MAX77734::REG_TYPE reg_addr) |
daniel_gs_jeong | 0:2726f8e71192 | 107 | { |
daniel_gs_jeong | 0:2726f8e71192 | 108 | char data; |
daniel_gs_jeong | 0:2726f8e71192 | 109 | |
daniel_gs_jeong | 0:2726f8e71192 | 110 | data = reg_addr; |
daniel_gs_jeong | 0:2726f8e71192 | 111 | if (i2c_->write(I2C_ADDR, &data, 1, true) != 0) { |
daniel_gs_jeong | 0:2726f8e71192 | 112 | return -1; |
daniel_gs_jeong | 0:2726f8e71192 | 113 | } |
daniel_gs_jeong | 0:2726f8e71192 | 114 | |
daniel_gs_jeong | 0:2726f8e71192 | 115 | if (i2c_->read(I2C_ADDR | 0x01, &data, 1) != 0) { |
daniel_gs_jeong | 0:2726f8e71192 | 116 | return -1; |
daniel_gs_jeong | 0:2726f8e71192 | 117 | } |
daniel_gs_jeong | 0:2726f8e71192 | 118 | |
daniel_gs_jeong | 0:2726f8e71192 | 119 | return (0x0 + data); |
daniel_gs_jeong | 0:2726f8e71192 | 120 | } |
daniel_gs_jeong | 0:2726f8e71192 | 121 | |
daniel_gs_jeong | 0:2726f8e71192 | 122 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 123 | int32_t MAX77734::i2c_read_bytes(MAX77734::REG_TYPE startReg, |
daniel_gs_jeong | 0:2726f8e71192 | 124 | MAX77734::REG_TYPE stopReg, |
daniel_gs_jeong | 0:2726f8e71192 | 125 | uint8_t *data) |
daniel_gs_jeong | 0:2726f8e71192 | 126 | { |
daniel_gs_jeong | 0:2726f8e71192 | 127 | int32_t rtnVal = -1; |
daniel_gs_jeong | 0:2726f8e71192 | 128 | int32_t numBytes = ((stopReg - startReg) + 1); |
daniel_gs_jeong | 0:2726f8e71192 | 129 | char packet[] = {static_cast<char>(startReg)}; |
daniel_gs_jeong | 0:2726f8e71192 | 130 | |
daniel_gs_jeong | 0:2726f8e71192 | 131 | if(i2c_->write(I2C_ADDR, packet, 1) == 0) |
daniel_gs_jeong | 0:2726f8e71192 | 132 | { |
daniel_gs_jeong | 0:2726f8e71192 | 133 | rtnVal = i2c_->read(I2C_ADDR | 0x01, |
daniel_gs_jeong | 0:2726f8e71192 | 134 | reinterpret_cast<char *>(data), numBytes); |
daniel_gs_jeong | 0:2726f8e71192 | 135 | } |
daniel_gs_jeong | 0:2726f8e71192 | 136 | |
daniel_gs_jeong | 0:2726f8e71192 | 137 | return rtnVal; |
daniel_gs_jeong | 0:2726f8e71192 | 138 | } |
daniel_gs_jeong | 0:2726f8e71192 | 139 | |
daniel_gs_jeong | 0:2726f8e71192 | 140 | //****************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 141 | int32_t MAX77734::i2c_update_byte(MAX77734::REG_TYPE reg_addr, |
daniel_gs_jeong | 0:2726f8e71192 | 142 | char set_data, char mask) |
daniel_gs_jeong | 0:2726f8e71192 | 143 | { |
daniel_gs_jeong | 0:2726f8e71192 | 144 | int32_t rData; |
daniel_gs_jeong | 0:2726f8e71192 | 145 | |
daniel_gs_jeong | 0:2726f8e71192 | 146 | rData = i2c_read_byte(reg_addr); |
daniel_gs_jeong | 0:2726f8e71192 | 147 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 148 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 149 | |
daniel_gs_jeong | 0:2726f8e71192 | 150 | rData &= ~mask; |
daniel_gs_jeong | 0:2726f8e71192 | 151 | rData = (set_data & mask); |
daniel_gs_jeong | 0:2726f8e71192 | 152 | |
daniel_gs_jeong | 0:2726f8e71192 | 153 | rData = i2c_write_byte(reg_addr, rData); |
daniel_gs_jeong | 0:2726f8e71192 | 154 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 155 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 156 | |
daniel_gs_jeong | 0:2726f8e71192 | 157 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 158 | } |
daniel_gs_jeong | 0:2726f8e71192 | 159 | |
daniel_gs_jeong | 0:2726f8e71192 | 160 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 161 | int32_t MAX77734::read_register(MAX77734::REG_TYPE reg_addr) |
daniel_gs_jeong | 0:2726f8e71192 | 162 | { |
daniel_gs_jeong | 0:2726f8e71192 | 163 | int32_t rData, mask; |
daniel_gs_jeong | 0:2726f8e71192 | 164 | |
daniel_gs_jeong | 0:2726f8e71192 | 165 | rData = i2c_read_byte(reg_addr); |
daniel_gs_jeong | 0:2726f8e71192 | 166 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 167 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 168 | |
daniel_gs_jeong | 0:2726f8e71192 | 169 | switch(reg_addr) { |
daniel_gs_jeong | 0:2726f8e71192 | 170 | case REG_INT_GLBL: mask = 0x7F; break; |
daniel_gs_jeong | 0:2726f8e71192 | 171 | case REG_INT_CHG: mask = 0x7F; break; |
daniel_gs_jeong | 0:2726f8e71192 | 172 | case REG_STAT_CHG_A: mask = 0x7F; break; |
daniel_gs_jeong | 0:2726f8e71192 | 173 | case REG_INTM_GLBL: mask = 0x7C; break; |
daniel_gs_jeong | 0:2726f8e71192 | 174 | case REG_INTM_CHG: mask = 0x7F; break; |
daniel_gs_jeong | 0:2726f8e71192 | 175 | case REG_CID: mask = 0x0F; break; |
daniel_gs_jeong | 0:2726f8e71192 | 176 | case REG_CNFG_WDT: mask = 0x3F; break; |
daniel_gs_jeong | 0:2726f8e71192 | 177 | case REG_CNFG_CHG_F: mask = 0xFE; break; |
daniel_gs_jeong | 0:2726f8e71192 | 178 | case REG_CNFG_CHG_G: mask = 0xFE; break; |
daniel_gs_jeong | 0:2726f8e71192 | 179 | case REG_CNFG_CHG_H: mask = 0xFC; break; |
daniel_gs_jeong | 0:2726f8e71192 | 180 | case REG_CNFG_LDO_B: mask = 0x0F; break; |
daniel_gs_jeong | 0:2726f8e71192 | 181 | case REG_CNFG_SNK_TOP: mask = 0x03; break; |
daniel_gs_jeong | 0:2726f8e71192 | 182 | default: mask = 0xFF; break; |
daniel_gs_jeong | 0:2726f8e71192 | 183 | } |
daniel_gs_jeong | 0:2726f8e71192 | 184 | |
daniel_gs_jeong | 0:2726f8e71192 | 185 | return (rData & mask); |
daniel_gs_jeong | 0:2726f8e71192 | 186 | } |
daniel_gs_jeong | 0:2726f8e71192 | 187 | |
daniel_gs_jeong | 0:2726f8e71192 | 188 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 189 | int32_t MAX77734::interrupt_isr() |
daniel_gs_jeong | 0:2726f8e71192 | 190 | { |
daniel_gs_jeong | 0:2726f8e71192 | 191 | int32_t rData[2]; |
daniel_gs_jeong | 0:2726f8e71192 | 192 | |
daniel_gs_jeong | 0:2726f8e71192 | 193 | rData[0] = i2c_read_byte(REG_INT_GLBL) & 0xff; |
daniel_gs_jeong | 0:2726f8e71192 | 194 | if(rData[0] < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 195 | return rData[0]; |
daniel_gs_jeong | 0:2726f8e71192 | 196 | |
daniel_gs_jeong | 0:2726f8e71192 | 197 | rData[1] = i2c_read_byte(REG_INT_CHG) & 0xff; |
daniel_gs_jeong | 0:2726f8e71192 | 198 | if(rData[1] < 1) |
daniel_gs_jeong | 0:2726f8e71192 | 199 | return rData[1]; |
daniel_gs_jeong | 0:2726f8e71192 | 200 | |
daniel_gs_jeong | 0:2726f8e71192 | 201 | return ((rData[1] &0xff) << 8 ) | (rData[0] &0xff); |
daniel_gs_jeong | 0:2726f8e71192 | 202 | } |
daniel_gs_jeong | 0:2726f8e71192 | 203 | |
daniel_gs_jeong | 0:2726f8e71192 | 204 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 205 | int32_t MAX77734::set_i_fastchg_uA(int32_t current) |
daniel_gs_jeong | 0:2726f8e71192 | 206 | { |
daniel_gs_jeong | 0:2726f8e71192 | 207 | int32_t rData; |
daniel_gs_jeong | 0:2726f8e71192 | 208 | int32_t code = (current - 7500) / 7500; |
daniel_gs_jeong | 0:2726f8e71192 | 209 | |
daniel_gs_jeong | 0:2726f8e71192 | 210 | if( current > 300000) |
daniel_gs_jeong | 0:2726f8e71192 | 211 | code = 0x3f; |
daniel_gs_jeong | 0:2726f8e71192 | 212 | |
daniel_gs_jeong | 0:2726f8e71192 | 213 | rData = i2c_update_byte(REG_CNFG_CHG_E, code <<2, 0xFC); |
daniel_gs_jeong | 0:2726f8e71192 | 214 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 215 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 216 | |
daniel_gs_jeong | 0:2726f8e71192 | 217 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 218 | } |
daniel_gs_jeong | 0:2726f8e71192 | 219 | |
daniel_gs_jeong | 0:2726f8e71192 | 220 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 221 | int32_t MAX77734::set_time_fastchg_hour(int32_t hour) |
daniel_gs_jeong | 0:2726f8e71192 | 222 | { |
daniel_gs_jeong | 0:2726f8e71192 | 223 | int32_t rData, code; |
daniel_gs_jeong | 0:2726f8e71192 | 224 | |
daniel_gs_jeong | 0:2726f8e71192 | 225 | switch(hour) { |
daniel_gs_jeong | 0:2726f8e71192 | 226 | case 0: code = 0x0; break; //Timer Disabled |
daniel_gs_jeong | 0:2726f8e71192 | 227 | case 1 ... 3: code = 0x1; break; // 3hours |
daniel_gs_jeong | 0:2726f8e71192 | 228 | case 4 ... 5: code = 0x2; break; //5 hours |
daniel_gs_jeong | 0:2726f8e71192 | 229 | default: code = 0x3; break; //7 hours |
daniel_gs_jeong | 0:2726f8e71192 | 230 | }; |
daniel_gs_jeong | 0:2726f8e71192 | 231 | |
daniel_gs_jeong | 0:2726f8e71192 | 232 | rData = i2c_update_byte(REG_CNFG_CHG_E, code, 0x03); |
daniel_gs_jeong | 0:2726f8e71192 | 233 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 234 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 235 | |
daniel_gs_jeong | 0:2726f8e71192 | 236 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 237 | } |
daniel_gs_jeong | 0:2726f8e71192 | 238 | |
daniel_gs_jeong | 0:2726f8e71192 | 239 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 240 | int32_t MAX77734::set_v_fastchg_mA(int32_t voltage) |
daniel_gs_jeong | 0:2726f8e71192 | 241 | { |
daniel_gs_jeong | 0:2726f8e71192 | 242 | int32_t rData; |
daniel_gs_jeong | 0:2726f8e71192 | 243 | int32_t code = (voltage - 3600) / 25; |
daniel_gs_jeong | 0:2726f8e71192 | 244 | |
daniel_gs_jeong | 0:2726f8e71192 | 245 | if( voltage > 4600) |
daniel_gs_jeong | 0:2726f8e71192 | 246 | code = 0x3f; |
daniel_gs_jeong | 0:2726f8e71192 | 247 | |
daniel_gs_jeong | 0:2726f8e71192 | 248 | rData = i2c_update_byte(REG_CNFG_CHG_G, code <<2, 0xFC); |
daniel_gs_jeong | 0:2726f8e71192 | 249 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 250 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 251 | |
daniel_gs_jeong | 0:2726f8e71192 | 252 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 253 | } |
daniel_gs_jeong | 0:2726f8e71192 | 254 | |
daniel_gs_jeong | 0:2726f8e71192 | 255 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 256 | int32_t MAX77734::set_i_term_percent(MAX77734::I_TERM_TYPE percent) |
daniel_gs_jeong | 0:2726f8e71192 | 257 | { |
daniel_gs_jeong | 0:2726f8e71192 | 258 | int32_t rData; |
daniel_gs_jeong | 0:2726f8e71192 | 259 | |
daniel_gs_jeong | 0:2726f8e71192 | 260 | rData = i2c_update_byte(REG_CNFG_CHG_C, percent <<3, 0x18); |
daniel_gs_jeong | 0:2726f8e71192 | 261 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 262 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 263 | |
daniel_gs_jeong | 0:2726f8e71192 | 264 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 265 | } |
daniel_gs_jeong | 0:2726f8e71192 | 266 | |
daniel_gs_jeong | 0:2726f8e71192 | 267 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 268 | int32_t MAX77734::set_time_topoff_min(int32_t minute) |
daniel_gs_jeong | 0:2726f8e71192 | 269 | { |
daniel_gs_jeong | 0:2726f8e71192 | 270 | int32_t rData, code; |
daniel_gs_jeong | 0:2726f8e71192 | 271 | |
daniel_gs_jeong | 0:2726f8e71192 | 272 | switch(minute) { |
daniel_gs_jeong | 0:2726f8e71192 | 273 | case 0: code = 0x0; break; |
daniel_gs_jeong | 0:2726f8e71192 | 274 | case 1 ... 5: code = 0x1; break; |
daniel_gs_jeong | 0:2726f8e71192 | 275 | case 6 ... 10: code = 0x2; break; |
daniel_gs_jeong | 0:2726f8e71192 | 276 | case 11 ... 15: code = 0x3; break; |
daniel_gs_jeong | 0:2726f8e71192 | 277 | case 16 ... 20: code = 0x4; break; |
daniel_gs_jeong | 0:2726f8e71192 | 278 | case 21 ... 25: code = 0x5; break; |
daniel_gs_jeong | 0:2726f8e71192 | 279 | case 26 ... 30: code = 0x6; break; |
daniel_gs_jeong | 0:2726f8e71192 | 280 | default: code = 0x7; break; |
daniel_gs_jeong | 0:2726f8e71192 | 281 | }; |
daniel_gs_jeong | 0:2726f8e71192 | 282 | |
daniel_gs_jeong | 0:2726f8e71192 | 283 | rData = i2c_update_byte(REG_CNFG_CHG_C, code, 0x07); |
daniel_gs_jeong | 0:2726f8e71192 | 284 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 285 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 286 | |
daniel_gs_jeong | 0:2726f8e71192 | 287 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 288 | } |
daniel_gs_jeong | 0:2726f8e71192 | 289 | |
daniel_gs_jeong | 0:2726f8e71192 | 290 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 291 | int32_t MAX77734::set_charger_enable(MAX77734::ENABLE_TYPE control) |
daniel_gs_jeong | 0:2726f8e71192 | 292 | { |
daniel_gs_jeong | 0:2726f8e71192 | 293 | int32_t rData, code = 0; |
daniel_gs_jeong | 0:2726f8e71192 | 294 | |
daniel_gs_jeong | 0:2726f8e71192 | 295 | if(control == VAL_ENABLE) |
daniel_gs_jeong | 0:2726f8e71192 | 296 | code = 0x01; |
daniel_gs_jeong | 0:2726f8e71192 | 297 | |
daniel_gs_jeong | 0:2726f8e71192 | 298 | rData = i2c_update_byte(REG_CNFG_CHG_B, code, 0x01); |
daniel_gs_jeong | 0:2726f8e71192 | 299 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 300 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 301 | |
daniel_gs_jeong | 0:2726f8e71192 | 302 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 303 | } |
daniel_gs_jeong | 0:2726f8e71192 | 304 | |
daniel_gs_jeong | 0:2726f8e71192 | 305 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 306 | int32_t MAX77734::set_ldo_enable(MAX77734::ENABLE_TYPE control) |
daniel_gs_jeong | 0:2726f8e71192 | 307 | { |
daniel_gs_jeong | 0:2726f8e71192 | 308 | int32_t rData, code; |
daniel_gs_jeong | 0:2726f8e71192 | 309 | |
daniel_gs_jeong | 0:2726f8e71192 | 310 | switch(control) { |
daniel_gs_jeong | 0:2726f8e71192 | 311 | case VAL_ENABLE: code = 0x01; break; |
daniel_gs_jeong | 0:2726f8e71192 | 312 | case VAL_ENABLE_OPTION1: code = 0x02; break; |
daniel_gs_jeong | 0:2726f8e71192 | 313 | default: code = 0x00; break; |
daniel_gs_jeong | 0:2726f8e71192 | 314 | }; |
daniel_gs_jeong | 0:2726f8e71192 | 315 | |
daniel_gs_jeong | 0:2726f8e71192 | 316 | rData = i2c_update_byte(REG_CNFG_LDO_B, code, 0x03); |
daniel_gs_jeong | 0:2726f8e71192 | 317 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 318 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 319 | |
daniel_gs_jeong | 0:2726f8e71192 | 320 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 321 | } |
daniel_gs_jeong | 0:2726f8e71192 | 322 | |
daniel_gs_jeong | 0:2726f8e71192 | 323 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 324 | int32_t MAX77734::set_ldo_pwr_mode(MAX77734::POWER_MODE_TYPE mode) |
daniel_gs_jeong | 0:2726f8e71192 | 325 | { |
daniel_gs_jeong | 0:2726f8e71192 | 326 | int32_t rData, code; |
daniel_gs_jeong | 0:2726f8e71192 | 327 | |
daniel_gs_jeong | 0:2726f8e71192 | 328 | switch(mode) { |
daniel_gs_jeong | 0:2726f8e71192 | 329 | case LDO_LOW_PWR_MODE: code = 0x00; break; |
daniel_gs_jeong | 0:2726f8e71192 | 330 | case LDO_NORMAL_PWR_MODE: code = 0x01; break; |
daniel_gs_jeong | 0:2726f8e71192 | 331 | case LDO_PIN_ACT_HIGH: code = 0x02; break; |
daniel_gs_jeong | 0:2726f8e71192 | 332 | case LDO_PIN_ACT_LOW: code = 0x03; break; |
daniel_gs_jeong | 0:2726f8e71192 | 333 | default: return -1; |
daniel_gs_jeong | 0:2726f8e71192 | 334 | }; |
daniel_gs_jeong | 0:2726f8e71192 | 335 | |
daniel_gs_jeong | 0:2726f8e71192 | 336 | rData = i2c_update_byte(REG_CNFG_LDO_B, code << 2, 0x0C); |
daniel_gs_jeong | 0:2726f8e71192 | 337 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 338 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 339 | |
daniel_gs_jeong | 0:2726f8e71192 | 340 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 341 | } |
daniel_gs_jeong | 0:2726f8e71192 | 342 | |
daniel_gs_jeong | 0:2726f8e71192 | 343 | //***************************************************************************** |
daniel_gs_jeong | 0:2726f8e71192 | 344 | int32_t MAX77734::set_ldo_voltage_mV(int32_t voltage) |
daniel_gs_jeong | 0:2726f8e71192 | 345 | { |
daniel_gs_jeong | 0:2726f8e71192 | 346 | int32_t rData; |
daniel_gs_jeong | 0:2726f8e71192 | 347 | int32_t code = (voltage - 800) / 25; |
daniel_gs_jeong | 0:2726f8e71192 | 348 | |
daniel_gs_jeong | 0:2726f8e71192 | 349 | rData = i2c_update_byte(REG_CNFG_LDO_A, code, 0x7F); |
daniel_gs_jeong | 0:2726f8e71192 | 350 | if(rData < 0) |
daniel_gs_jeong | 0:2726f8e71192 | 351 | return rData; |
daniel_gs_jeong | 0:2726f8e71192 | 352 | |
daniel_gs_jeong | 0:2726f8e71192 | 353 | return 0; |
daniel_gs_jeong | 0:2726f8e71192 | 354 | } |