86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
/*!
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* \file sx1509.c
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*
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* \brief SX1509 IO expander 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 "sx1509.h"
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extern I2c_t I2c;
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static uint8_t I2cDeviceAddr = 0;
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static bool SX1509Initialized = false;
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void SX1509Init( void )
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{
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if( SX1509Initialized == false )
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{
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SX1509SetDeviceAddr( SX1509_I2C_ADDRESS );
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SX1509Initialized = true;
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SX1509Reset( );
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}
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}
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uint8_t SX1509Reset( )
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{
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if( SX1509Write( RegReset, 0x12 ) == LORA_SUCCESS )
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{
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if( SX1509Write( RegReset, 0x34 ) == LORA_SUCCESS )
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{
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return LORA_SUCCESS;
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}
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}
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return LORA_FAIL;
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}
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uint8_t SX1509Write( uint8_t addr, uint8_t data )
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{
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return SX1509WriteBuffer( addr, &data, 1 );
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}
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uint8_t SX1509WriteBuffer( 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 SX1509Read( uint8_t addr, uint8_t *data )
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{
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return SX1509ReadBuffer( addr, data, 1 );
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}
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uint8_t SX1509ReadBuffer( 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 SX1509SetDeviceAddr( uint8_t addr )
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{
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I2cDeviceAddr = addr;
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}
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uint8_t SX1509GetDeviceAddr( void )
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{
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return I2cDeviceAddr;
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}
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