123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/*!
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* \file sx9500.c
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*
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* \brief SX9500 proximity sensor driver implementation
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*
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* \copyright Revised BSD License, see section \ref LICENSE.
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*
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* \code
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* ______ _
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* / _____) _ | |
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* ( (____ _____ ____ _| |_ _____ ____| |__
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* \____ \| ___ | (_ _) ___ |/ ___) _ \
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* _____) ) ____| | | || |_| ____( (___| | | |
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* (______/|_____)_|_|_| \__)_____)\____)_| |_|
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* (C)2013-2017 Semtech
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*
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* \endcode
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*
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* \author Miguel Luis ( Semtech )
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*
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* \author Gregory Cristian ( Semtech )
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*/
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#include <stdbool.h>
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#include "utilities.h"
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#include "i2c.h"
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#include "sx9500.h"
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extern I2c_t I2c;
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static uint8_t I2cDeviceAddr = 0;
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static bool SX9500Initialized = false;
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uint8_t SX9500Init( void )
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{
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uint8_t regVal = 0;
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SX9500SetDeviceAddr( SX9500_I2C_ADDRESS );
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if( SX9500Initialized == false )
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{
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SX9500Initialized = true;
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SX9500Read( SX9500_REG_PROXCTRL0, ®Val );
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if( regVal != 0x0F )
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{
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return LORA_FAIL;
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}
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SX9500Reset( );
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}
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return LORA_SUCCESS;
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}
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uint8_t SX9500Reset( )
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{
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if( SX9500Write( SX9500_REG_RESET, SX9500_RESET_CMD ) == LORA_SUCCESS )
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{
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return LORA_SUCCESS;
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}
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return LORA_FAIL;
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}
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uint8_t SX9500Write( uint8_t addr, uint8_t data )
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{
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return SX9500WriteBuffer( addr, &data, 1 );
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}
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uint8_t SX9500WriteBuffer( uint8_t addr, uint8_t *data, uint8_t size )
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{
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return I2cWriteBuffer( &I2c, I2cDeviceAddr << 1, addr, data, size );
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}
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uint8_t SX9500Read( uint8_t addr, uint8_t *data )
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{
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return SX9500ReadBuffer( addr, data, 1 );
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}
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uint8_t SX9500ReadBuffer( uint8_t addr, uint8_t *data, uint8_t size )
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{
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return I2cReadBuffer( &I2c, I2cDeviceAddr << 1, addr, data, size );
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}
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void SX9500SetDeviceAddr( uint8_t addr )
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{
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I2cDeviceAddr = addr;
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}
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uint8_t SX9500GetDeviceAddr( void )
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{
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return I2cDeviceAddr;
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}
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void SX9500LockUntilDetection( void )
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{
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uint8_t val = 0;
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SX9500Write( SX9500_REG_RESET, SX9500_RESET_CMD );
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SX9500Read( SX9500_REG_IRQSRC, &val );
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SX9500Read( SX9500_REG_STAT, &val );
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SX9500Write( SX9500_REG_PROXCTRL0, 0x0F );
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SX9500Write( SX9500_REG_PROXCTRL1, 0x43 );
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SX9500Write( SX9500_REG_PROXCTRL2, 0x77 );
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SX9500Write( SX9500_REG_PROXCTRL3, 0x01 );
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SX9500Write( SX9500_REG_PROXCTRL4, 0x30 );
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SX9500Write( SX9500_REG_PROXCTRL5, 0x0F );
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SX9500Write( SX9500_REG_PROXCTRL6, 0x04 );
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SX9500Write( SX9500_REG_PROXCTRL7, 0x40 );
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SX9500Write( SX9500_REG_PROXCTRL8, 0x00 );
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SX9500Write( SX9500_REG_IRQMSK, 0x60 );
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val = 0;
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while( ( val & 0xF0 ) == 0x00 )
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{
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SX9500Read( SX9500_REG_STAT, &val );
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}
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SX9500Read( SX9500_REG_STAT, &val );
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SX9500Read( SX9500_REG_IRQSRC, &val );
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}
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