David Giles / Mbed 2 deprecated CM-MBED_RSEDP_Test_Suite_LPC1768_V3

This is a complete listing of the RS-EDP software for the mbed module to support the RS-EDP platform.

Dependencies:   mbed

SourceFiles/RSEDP_AM_MAX1X3X_ADC.cpp@0:5b7639d1f2c4, 2010-11-19 (annotated)

Committer:
DavidGilesHitex
Date:
Fri Nov 19 09:49:16 2010 +0000
Revision:
0:5b7639d1f2c4

        

        
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/* Driver for the MAX1x3x Serial ADC */





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/* ********************************* */





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/* Version 2.00 */





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/* Last Ammend Date: 23/6/09 */





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#define _MAX1038_





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/* Include Files Here */





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#include "mbed.h"                                /* mbed header file */





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#include "misra_types.h"                         /* MISRA Types header file */





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#include "defines.h"





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#include "RSEDP_Slave_Address_Defines.h"        /* Slave address of I2C Peripherals */





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#include "RSEDP_CNTRL_I2C.h"                    /* Control I2C Driver */





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/* Function Prototypes */





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sint32_t RSEDP_AM_Init_MAX1x3x(uint8_t I2C_addr) ;





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sint32_t RSEDP_AM_MAX103x_ReadChannel(uint8_t I2C_addr, uint8_t *uiResult, uint8_t uiChannel) ;





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sint32_t RSEDP_AM_MAX113x_ReadChannel(uint8_t I2C_addr, uint16_t *uiResult, uint8_t uiChannel) ;





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/* Reset and initialise MAX1x3x ADC */





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sint32_t RSEDP_AM_Init_MAX1x3x(uint8_t I2C_addr)





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    {





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        sint32_t Ack_Status = 0;





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        sint8_t uiSetup_byte = 0;





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        sint8_t uiConfig_byte = 0;





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        sint8_t uiMessage[3] = {0,0,0};





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        /* Create Setup Byte for REST */





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           uiSetup_byte = MAX1x3x_SETUP_RST | MAX1x3x_SETUP_REG;





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        /* Send Reset Command */





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        Ack_Status = CNTRL_I2C_Master_Mode_Transmit(I2C_addr, &uiSetup_byte, 1) ;





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        /* Create Setup Byte */





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        /* Internal reference always on and ADC11=analogue input and not Vref, Internal Clock      */





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        uiSetup_byte = MAX1x3x_SETUP_REG | MAX1x3x_SETUP_SEL_INT_Ref_AN11_AlwaysOn | MAX1x3x_SETUP_IntCLK | MAX1x3x_SETUP_UniPol | MAX1x3x_SETUP_NO_RST;





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        /* Create CONFIG Byte */





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        /* Convert single ended unipolar, channel 0 initially */





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        uiConfig_byte = MAX1x3x_CONFIG_REG | MAX1x3x_CONFIG_SingleEnded | MAX1x3x_CONFIG_ConvCh0 ; 





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        uiMessage[0] = uiSetup_byte ;





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        uiMessage[1] = uiConfig_byte ;





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        /* Send */





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        if (Ack_Status == ACK)





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            {





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                Ack_Status = CNTRL_I2C_Master_Mode_Transmit(I2C_addr, uiMessage, 2) ;





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            }





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        return Ack_Status;





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    }





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/* Reads a single channel MAX103x I2C ADC passed as a parameter */





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/* returns a pointer to the 8-bit result */





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sint32_t RSEDP_AM_MAX103x_ReadChannel(uint8_t I2C_addr, uint8_t *uiResult, uint8_t uiChannel)





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    {





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        sint32_t Ack_Status = 0;





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        sint8_t uiConfig_byte = 0;





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        sint8_t uiResult_value = 0;





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        uint8_t uiCorrected_Channel = 0;





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        /* Set which channel to convert */





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        /* The pin out for MAX1038 is different from MAX1138 */





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        /* The channel numbers 0-7 are reversed on the MAX1038. The PCB has been laid out for the MAX1138 */





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        uiCorrected_Channel = uiChannel;





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        if (uiChannel < 8) 





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            {





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                uiCorrected_Channel = (7 - uiChannel);        





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            }





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        uiConfig_byte = MAX1x3x_CONFIG_REG | MAX1x3x_CONFIG_SingleEnded | (uint8_t)(uiCorrected_Channel << 1) | MAX1x3x_CONFIG_SingleChannel ; 





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        Ack_Status = CNTRL_I2C_Master_Mode_Transmit(I2C_addr, &uiConfig_byte, 1) ;





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        /* Read Result */





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        if (Ack_Status == ACK)





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            {





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                Ack_Status = CNTRL_I2C_Master_Mode_Receive(I2C_addr, &uiResult_value , 1) ;





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            }





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        /* Return result to caller */





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        *uiResult = uiResult_value ;





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        return Ack_Status;





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    }





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/* Reads a single channel MAX113x I2C ADC passed as a parameter */





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/* returns a pointer to the 16-bit result */





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sint32_t RSEDP_AM_MAX113x_ReadChannel(uint8_t I2C_addr, uint16_t *uiResult, uint8_t uiChannel)





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    {





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        sint32_t Ack_Status = 0;





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        sint8_t uiConfig_byte = 0;





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        union BWL { sint8_t uiBytes[4] ; uint16_t uiWords[2] ; uint32_t uiLong ; } ;





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        union BWL sResult ;





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        /* Set which channel to convert */





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        uiConfig_byte = MAX1x3x_CONFIG_REG | MAX1x3x_CONFIG_SingleEnded | (uint8_t)(uiChannel << 1) | MAX1x3x_CONFIG_SingleChannel ; 





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        Ack_Status = CNTRL_I2C_Master_Mode_Transmit(I2C_addr, &uiConfig_byte, 1) ;





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        /* Read Result */





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        if (Ack_Status == ACK)





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            {





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                Ack_Status = CNTRL_I2C_Master_Mode_Receive(I2C_addr, &sResult.uiBytes[0] , 2) ;





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            }





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        /* Return result to caller */





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        *uiResult = sResult.uiWords[0] ;





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        return Ack_Status;





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    }





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