MAX77650 Driver
Dependents: MAX32620FTHR_Pmic MAX32620FTHR_Pmic_Boot MAX32620FTHR_GPS_Tracker
Fork of MAX77650 by
MAX77650.cpp
- Committer:
- jessexm
- Date:
- 2018-04-24
- Revision:
- 0:d29ae4cd4af7
File content as of revision 0:d29ae4cd4af7:
/******************************************************************************* * 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); }