![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Driver for Proximity / Ambient Light Sensor VCNL40xx from Vishay
VCNL40x0.cpp
- Committer:
- kokisan2000
- Date:
- 2013-11-30
- Revision:
- 0:1f3d09f0060a
File content as of revision 0:1f3d09f0060a:
/* Copyright (c) 2012 Vishay GmbH, www.vishay.com author: DS, version 1.21 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 THE AUTHORS OR COPYRIGHT HOLDERS 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. */ #include "VCNL40x0.h" //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0::VCNL40x0(PinName sda, PinName scl, unsigned char addr) : _i2c(sda, scl), _addr(addr) { _i2c.frequency(1000000); // set I2C frequency to 1MHz } VCNL40x0::~VCNL40x0() { } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetCommandRegister (unsigned char Command) { _send[0] = REGISTER_COMMAND; // VCNL40x0 Configuration reister _send[1] = Command; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadCommandRegister (unsigned char *Command) { _send[0] = REGISTER_COMMAND; // VCNL40x0 Configuration register _i2c.write(VCNL40x0_ADDRESS,_send, 1); // Write 1 byte on I2C _i2c.read(VCNL40x0_ADDRESS+1,_receive, 1); // Read 1 byte on I2C *Command = (unsigned char)(_receive[0]); return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadID (unsigned char *ID) { _send[0] = REGISTER_ID; // VCNL40x0 product ID revision register _i2c.write(VCNL40x0_ADDRESS, _send, 1); // Write 1 byte on I2C _i2c.read(VCNL40x0_ADDRESS+1, _receive, 1); // Read 1 byte on I2C *ID = (unsigned char)(_receive[0]); return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetCurrent (unsigned char Current) { _send[0] = REGISTER_PROX_CURRENT; // VCNL40x0 IR LED Current register _send[1] = Current; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadCurrent (unsigned char *Current) { _send[0] = REGISTER_PROX_CURRENT; // VCNL40x0 IR LED current register _i2c.write(VCNL40x0_ADDRESS,_send, 1); // Write 1 byte on I2C _i2c.read(VCNL40x0_ADDRESS+1,_receive, 1); // Read 1 byte on I2C *Current = (unsigned char)(_receive[0]); return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetProximityRate (unsigned char ProximityRate) { _send[0] = REGISTER_PROX_RATE; // VCNL40x0 Proximity rate register _send[1] = ProximityRate; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetAmbiConfiguration (unsigned char AmbiConfiguration) { _send[0] = REGISTER_AMBI_PARAMETER; // VCNL40x0 Ambilight configuration _send[1] = AmbiConfiguration; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetInterruptControl (unsigned char InterruptControl) { _send[0] = REGISTER_INTERRUPT_CONTROL; // VCNL40x0 Interrupt Control register _send[1] = InterruptControl; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadInterruptControl (unsigned char *InterruptControl) { _send[0] = REGISTER_INTERRUPT_CONTROL; // VCNL40x0 Interrupt Control register _i2c.write(VCNL40x0_ADDRESS,_send, 1); // Write 1 byte on I2C _i2c.read(VCNL40x0_ADDRESS+1,_receive, 1); // Read 1 byte on I2C *InterruptControl = (unsigned char)(_receive[0]); return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetInterruptStatus (unsigned char InterruptStatus) { _send[0] = REGISTER_INTERRUPT_STATUS; // VCNL40x0 Interrupt Status register _send[1] = InterruptStatus; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetModulatorTimingAdjustment (unsigned char ModulatorTimingAdjustment) { _send[0] = REGISTER_PROX_TIMING; // VCNL40x0 Modulator Timing Adjustment register _send[1] = ModulatorTimingAdjustment; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadInterruptStatus (unsigned char *InterruptStatus) { _send[0] = REGISTER_INTERRUPT_STATUS; // VCNL40x0 Interrupt Status register _i2c.write(VCNL40x0_ADDRESS,_send, 1); // Write 1 byte on I2C _i2c.read(VCNL40x0_ADDRESS+1,_receive, 1); // Read 1 byte on I2C *InterruptStatus = (unsigned char)(_receive[0]); return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadProxiValue (unsigned int *ProxiValue) { _send[0] = REGISTER_PROX_VALUE; // VCNL40x0 Proximity Value register _i2c.write(VCNL40x0_ADDRESS, _send, 1); // Write 1 byte on I2C _i2c.read(VCNL40x0_ADDRESS+1, _receive, 2); // Read 2 bytes on I2C *ProxiValue = ((unsigned int)_receive[0] << 8 | (unsigned char)_receive[1]); return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadAmbiValue (unsigned int *AmbiValue) { _send[0] = REGISTER_AMBI_VALUE; // VCNL40x0 Ambient Light Value register _i2c.write(VCNL40x0_ADDRESS, _send, 1); // Write 1 byte on I2C _i2c.read(VCNL40x0_ADDRESS+1, _receive, 2); // Read 2 bytes on I2C *AmbiValue = ((unsigned int)_receive[0] << 8 | (unsigned char)_receive[1]); return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetLowThreshold (unsigned int LowThreshold) { unsigned char LoByte=0, HiByte=0; LoByte = (unsigned char)(LowThreshold & 0x00ff); HiByte = (unsigned char)((LowThreshold & 0xff00)>>8); _send[0] = REGISTER_INTERRUPT_LOW_THRES; // VCNL40x0 Low Threshold Register, Hi Byte _send[1] = HiByte; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C _send[0] = REGISTER_INTERRUPT_LOW_THRES+1; // VCNL40x0 Low Threshold Register, Lo Byte _send[1] = LoByte; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::SetHighThreshold (unsigned int HighThreshold) { unsigned char LoByte=0, HiByte=0; LoByte = (unsigned char)(HighThreshold & 0x00ff); HiByte = (unsigned char)((HighThreshold & 0xff00)>>8); _send[0] = REGISTER_INTERRUPT_HIGH_THRES; // VCNL40x0 High Threshold Register, Hi Byte _send[1] = HiByte; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C _send[0] = REGISTER_INTERRUPT_HIGH_THRES+1; // VCNL40x0 High Threshold Register, Lo Byte _send[1] = LoByte; _i2c.write(VCNL40x0_ADDRESS,_send, 2); // Write 2 bytes on I2C return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadProxiOnDemand (unsigned int *ProxiValue) { unsigned char Command=0; // enable prox value on demand SetCommandRegister (COMMAND_PROX_ENABLE | COMMAND_PROX_ON_DEMAND); // wait on prox data ready bit do { ReadCommandRegister (&Command); // read command register } while (!(Command & COMMAND_MASK_PROX_DATA_READY)); ReadProxiValue (ProxiValue); // read prox value SetCommandRegister (COMMAND_ALL_DISABLE); // stop prox value on demand return VCNL40x0_ERROR_OK; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////// VCNL40x0Error_e VCNL40x0::ReadAmbiOnDemand (unsigned int *AmbiValue) { unsigned char Command=0; // enable ambi value on demand SetCommandRegister (COMMAND_PROX_ENABLE | COMMAND_AMBI_ON_DEMAND); // wait on ambi data ready bit do { ReadCommandRegister (&Command); // read command register } while (!(Command & COMMAND_MASK_AMBI_DATA_READY)); ReadAmbiValue (AmbiValue); // read ambi value SetCommandRegister (COMMAND_ALL_DISABLE); // stop ambi value on demand return VCNL40x0_ERROR_OK; }