Library for MAXREFDES131 OneWire GridEYE sensor interface
Dependents: MAXREFDES131_Qt_Demo MAXREFDES130_131_Demo
Diff: API_Level_1/grideye_api_lv1.c
- Revision:
- 1:9e457e35e2e3
- Child:
- 3:5b025369ad96
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/API_Level_1/grideye_api_lv1.c Sat Apr 30 01:27:34 2016 +0000 @@ -0,0 +1,100 @@ +/******************************************************************************* + include file +*******************************************************************************/ +#include "grideye_api_common.h" + + +/******************************************************************************* + macro definition +*******************************************************************************/ + +/* Grid-EYE's number of pixels */ +#define SNR_SZ_X (8) +#define SNR_SZ_Y (8) +#define SNR_SZ (SNR_SZ_X * SNR_SZ_Y) + + +/******************************************************************************* + public method + ******************************************************************************/ + +/*------------------------------------------------------------------------------ + Read data form I2C bus. +------------------------------------------------------------------------------*/ +BOOL bAMG_PUB_I2C_Read( UCHAR ucI2cAddr, UCHAR ucRegAddr, UCHAR ucSize, UCHAR* ucDstAddr ) +{ + #if defined(MCU_TEST) + { + extern UCHAR I2C_Read( UCHAR, UCHAR, UCHAR*, UCHAR ); + return( I2C_Read( ucI2cAddr, ucRegAddr, ucDstAddr, ucSize ) ); + } + #else /* !defined(MCU_TEST) */ + { + return( 1 ); + } + #endif /* defined(MCU_TEST) */ +} + +/*------------------------------------------------------------------------------ + Convert thermistor register value. +------------------------------------------------------------------------------*/ +short shAMG_PUB_TMP_ConvThermistor( UCHAR aucRegVal[2] ) +{ + short shVal = ((short)(aucRegVal[1] & 0x07) << 8) | aucRegVal[0]; + + if( 0 != (0x08 & aucRegVal[1]) ) + { + shVal *= -1; + } + + shVal *= 16; + + return( shVal ); +} + +/*------------------------------------------------------------------------------ + Convert temperature register value for 1 pixel. +------------------------------------------------------------------------------*/ +short shAMG_PUB_TMP_ConvTemperature( UCHAR aucRegVal[2] ) +{ + short shVal = ((short)(aucRegVal[1] & 0x07) << 8) | aucRegVal[0]; + + if( 0 != (0x08 & aucRegVal[1]) ) + { + shVal -= 2048; + } + + shVal *= 64; + + return( shVal ); +} + +/*------------------------------------------------------------------------------ + Convert temperature register value for 64 pixel. +------------------------------------------------------------------------------*/ +void vAMG_PUB_TMP_ConvTemperature64( UCHAR* pucRegVal, short* pshVal ) +{ + UCHAR ucCnt = 0; + + for( ucCnt = 0; ucCnt < SNR_SZ; ucCnt++ ) + { + pshVal[ucCnt] = shAMG_PUB_TMP_ConvTemperature( pucRegVal + ucCnt * 2 ); + } +} + +/*------------------------------------------------------------------------------ + Convert value. +------------------------------------------------------------------------------*/ +short shAMG_PUB_CMN_ConvFtoS( float fVal ) +{ + return( ( fVal > 0 ) ? (short)(fVal * 256 + 0.5) : (short)(fVal * 256 - 0.5) ); +} + +/*------------------------------------------------------------------------------ + Convert value. +------------------------------------------------------------------------------*/ +float fAMG_PUB_CMN_ConvStoF( short shVal ) +{ + return( (float)shVal / 256 ); +} +