fork of library for MAX14661 16:2 mux
Fork of max14661 by
max14661.cpp
- Committer:
- j3
- Date:
- 2015-09-29
- Revision:
- 11:d3971b4fbdd8
- Parent:
- 10:ccbe1afdab31
- Child:
- 12:f14ce75c0661
File content as of revision 11:d3971b4fbdd8:
/******************************************************************//** * @file max14661.cpp * * @author Justin Jordan * * @version 1.0 * * Started: 11NOV14 * * Updated: * 29SEP15 - added second constructor that uses pointer to I2C bus * - added destructor * - removed redundant comments, see 'DRY' methodology * * @brief Source file for MAX14661 class * *********************************************************************** * * @copyright * Copyright (C) 2015 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 "max14661.h" //********************************************************************* Max14661::Max14661(I2C *i2c_bus, max14661_i2c_adrs_t i2c_adrs): _p_i2c(i2c_bus) { _i2c_owner = false; _r_adrs = ((i2c_adrs << 1) | 1); _w_adrs = (i2c_adrs << 1); } //********************************************************************* Max14661::Max14661(PinName sda, PinName scl, max14661_i2c_adrs_t i2c_adrs) { _p_i2c = new I2C(sda, scl); _i2c_owner = true; _r_adrs = ((i2c_adrs << 1) | 1); _w_adrs = (i2c_adrs << 1); } //********************************************************************* Max14661::~Max14661() { if(_i2c_owner) { delete _p_i2c; } } /*********************************************************************/ uint16_t Max14661::wrt_cmd_registers(max14661_cmds_t cmdA, max14661_cmds_t cmdB) { uint8_t data[3]; uint8_t data_length = 0; uint16_t rtn_val = 1; //build packet data[data_length++] = CMD_A; data[data_length++] = cmdA; data[data_length++] = cmdB; rtn_val = _p_i2c->write(_w_adrs,(const char*) data, data_length); return(rtn_val); } /*********************************************************************/ uint16_t Max14661::wrt_shadow_registers(uint16_t bankA, uint16_t bankB) { uint8_t data[5]; uint8_t data_length = 0; uint16_t rtn_val = 1; data[data_length++] = SHDW0; data[data_length++] = (bankA & 0x00FF); data[data_length++] = ((bankA >> 8) & 0x00FF); data[data_length++] = (bankB & 0x00FF); data[data_length++] = ((bankB >> 8) & 0x00FF); rtn_val = _p_i2c->write(_w_adrs,(const char*) data, data_length); return(rtn_val); } /*********************************************************************/ uint16_t Max14661::wrt_dir_registers(uint16_t bankA, uint16_t bankB) { uint8_t data[5]; uint8_t data_length = 0; uint16_t rtn_val = 1; data[data_length++] = DIR0; data[data_length++] = (bankA & 0x00FF); data[data_length++] = ((bankA >> 8) & 0x00FF); data[data_length++] = (bankB & 0x00FF); data[data_length++] = ((bankB >> 8) & 0x00FF); rtn_val = _p_i2c->write(_w_adrs,(const char*) data, data_length); return(rtn_val); } /*********************************************************************/ uint16_t Max14661::set_switches(uint16_t bankA, uint16_t bankB) { uint8_t data[7]; uint8_t data_length = 0; uint16_t rtn_val = 1; data[data_length++] = SHDW0; data[data_length++] = (bankA & 0x00FF); data[data_length++] = ((bankA >> 8) & 0x00FF); data[data_length++] = (bankB & 0x00FF); data[data_length++] = ((bankB >> 8) & 0x00FF); data[data_length++] = COPY_SHADOW; data[data_length++] = COPY_SHADOW; rtn_val = _p_i2c->write(_w_adrs,(const char*) data, data_length); return(rtn_val); } /*********************************************************************/ uint16_t Max14661::rd_dir_registers(uint8_t* data) { uint16_t rtn_val = 1; data[0] = DIR0; rtn_val = _p_i2c->write(_w_adrs,(const char*) data, 1); if(!rtn_val) { rtn_val = _p_i2c->read(_r_adrs,(char*) data, 4); } return(rtn_val); } /*********************************************************************/ uint16_t Max14661::rd_shadow_registers(uint8_t* data) { uint16_t rtn_val = 1; data[0] = SHDW0; rtn_val = _p_i2c->write(_w_adrs,(const char*) data, 1); if(!rtn_val) { rtn_val = _p_i2c->read(_r_adrs,(char*) data, 4); } return(rtn_val); }