ADLINK Technology CM1-86DX2, Техническое руководство

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Using the Module 61
CM1-86DX2
Analog Input Example
/*
########################################################################
########
# FILE: sai.c
# AUTHOR: FS for LiPPERT Adlink Technology GmbH
# DESCRIPTIONActivates the ADC and reads the selected channel once
# PARAMETERS:channel # (0 ... 7)
# COMPILENAMEsai
########################################################################
########
*/
#include <sys/io.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include "../../common/pci_conf_space/pcics.c"
#define TRUE 1
// Southbridge: path defines for both functions of device 7
#define SB_PCICS0 "/proc/bus/pci/00/07.0"
#define SB_PCICS1 "/proc/bus/pci/00/07.1"
// ADC specific defines of addresses and offsets
#define ADC_BASE_ADDR 0xFE00 //user defined base address for the ADC
#define ADC_AUX_CHS ADC_BA0 // AUX channel register
#define ADC_CTRL_REG ADC_BA1 // ADC control register
#define ADC_STATUS ADC_BA2 // ADC status register
#define ADC_DATA ADC_BA4 // ADC data register
#define ADC_READY_MASK 0x01
#define ADC_CH_MASK 0xFF // bits[15:13] represent the ADC channel
#define ADC_VAL_MASK 0x07FF // bits[10:0] represent the result value
// SB function 0 addresses and offsets
// base address of 32 bit wide On-Chip Device Control Register in South Bridge Function 0
#define ON_CHIP_CTRL_REG 0xBC
#define ADC_DISABLE_TEMPERATURE_SENSOR 0x6FFFFFFF
#define I2C1_DISABLE 0x00020000
// SB function 1 addresses and offsets
// start of 32 bit wide index register for the ADC_BASE_ADDR and Input Channel
// select in South Bridge Function 1
#define SB1_ADC_CONTROL_REG 0xE0
//base address of 16 bit wide 8051A Control Register in the South Bridge Function 1
#define ANALOG_SHARE_REG 0xDE
#define ANALOG_SHARE_DISABLE 0x02
#define ADC_START_ONE_SHOT 0x01 // do an bitwise OR to set
#define ADC_START_AUTOSCAN 0x03 // do an bitwise OR to set
#define ADC_DEVICE_CTRL_MASK 0xEF
// Calibration Settings
#define OFFSET 0.0 // in mV
void usage ()
{
printf( "USAGE: ./sai <channel>\n" );
printf( " <channel>: 0 ... 7\n" );
printf( "e. g.: ./sai 3\n");
return;