1 /***************************************************************** 2 * 3 * adcapp.c 4 * application to acess ADC adriver 5 * 6 * Author: Rama Rao Bisa <ramab@ami.com> 7 * 8 * Copyright (C) <2019> <American Megatrends International LLC> 9 * 10 *****************************************************************/ 11 12 #include <stdio.h> 13 #include <stdlib.h> 14 #include <errno.h> 15 #include <string.h> 16 #include <fcntl.h> 17 #include <ctype.h> 18 #include <unistd.h> 19 #include <sys/select.h> 20 #include <sys/ioctl.h> 21 #include <sys/poll.h> 22 #include <sys/time.h> 23 #include <stdint.h> 24 #include "EINTR_wrappers.h" 25 #include "adc.h" 26 #include "adcifc.h" 27 28 typedef enum { 29 GET_ADC_VALUE, 30 END_OF_FUNCLIST 31 32 }e_adc_actions; 33 34 e_adc_actions action = END_OF_FUNCLIST; 35 36 static void ShowUsuage ( void ) 37 { 38 printf ("ADC Test Tool - Copyright (c) 2009-2015 American Megatrends Inc.\n"); 39 printf( "Usage : addapp NumOfMaxChannels <option> \n" ); 40 printf( "option: \n" ); 41 printf( "\t--read-adc-channel \tGet ADC value for all the ADC channels\n" ); 42 printf( "\n" ); 43 } 44 45 static int process_arguments( int argc, char **argv ) 46 { 47 int i=2; 48 if( strcmp( argv[ i ], "--read-adc-channel" ) == 0 ) 49 { 50 action = GET_ADC_VALUE; 51 } 52 else 53 { 54 action = END_OF_FUNCLIST; 55 } 56 return 0; 57 } 58 59 int 60 main ( int argc , char* argv [] ) 61 { 62 63 get_adc_value_t get_adc_value; 64 int max_adc_channels; 65 int i,ret_val; 66 unsigned short reading=0; 67 if ( !(argc >= 3 ) ) 68 { 69 ShowUsuage () ; 70 return 0; 71 } 72 max_adc_channels = (unsigned char)strtol( argv[1], NULL, 10); 73 process_arguments( argc , argv); 74 if ( (END_OF_FUNCLIST == action)) 75 { 76 ShowUsuage (); 77 return 0; 78 } 79 80 switch ( action ) 81 { 82 case GET_ADC_VALUE: 83 for (i = 0; i < max_adc_channels; i++) 84 { 85 get_adc_value.channel_num = i; 86 get_adc_value.channel_value = 0; 87 88 ret_val = get_adc_val(get_adc_value.channel_num, &reading); 89 90 if (ret_val == -1) 91 { 92 printf ("Read ADC channel failed\n"); 93 return -1; 94 } 95 printf( 96 "ADC Channel Value =%5dmv for channel %d\n", 97 reading, get_adc_value.channel_num); 98 } 99 break; 100 101 default: 102 printf("Invalid ADC Function Call "); 103 break; 104 } 105 106 return 0; 107 } 108