![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
lab 7
Dependencies: SDFileSystem mbed
software_osc.cpp@0:f6d3b930f382, 2016-12-10 (annotated)
- Committer:
- jedh
- Date:
- Sat Dec 10 21:08:30 2016 +0000
- Revision:
- 0:f6d3b930f382
jgk
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jedh | 0:f6d3b930f382 | 1 | #include "stdio.h" |
jedh | 0:f6d3b930f382 | 2 | #include "stdint.h" |
jedh | 0:f6d3b930f382 | 3 | #include "mbed.h" |
jedh | 0:f6d3b930f382 | 4 | #include "Freedom_headers.h" |
jedh | 0:f6d3b930f382 | 5 | |
jedh | 0:f6d3b930f382 | 6 | #define USE_PC TRUE |
jedh | 0:f6d3b930f382 | 7 | /* UNCOMMENT THE FOLLOWING LINE TO ENABLE SD CARD FILESYSTEM VIA DEFAULT SPI */ |
jedh | 0:f6d3b930f382 | 8 | #define USE_SD_CARD TRUE |
jedh | 0:f6d3b930f382 | 9 | /* UNCOMMENT THE FOLLOWING LINE TO ENABLE DS1307 REAL-TIME CLOCK VIA IIC */ |
jedh | 0:f6d3b930f382 | 10 | #define USE_DS1307 TRUE |
jedh | 0:f6d3b930f382 | 11 | /* UNCOMMENT THE FOLLOWING LINE TO ENABLE SIMPLE FIFO FUNCTIONS */ |
jedh | 0:f6d3b930f382 | 12 | #define USE_SIMPLE_FIFO TRUE |
jedh | 0:f6d3b930f382 | 13 | |
jedh | 0:f6d3b930f382 | 14 | #ifdef USE_PC |
jedh | 0:f6d3b930f382 | 15 | Serial pc(USBTX,USBRX); |
jedh | 0:f6d3b930f382 | 16 | |
jedh | 0:f6d3b930f382 | 17 | #ifdef USE_SD_CARD |
jedh | 0:f6d3b930f382 | 18 | #include "SDFileSystem.h" |
jedh | 0:f6d3b930f382 | 19 | #define SD_MOSI PTD6 |
jedh | 0:f6d3b930f382 | 20 | #define SD_MISO PTD7 |
jedh | 0:f6d3b930f382 | 21 | #define SD_SCK PTD5 |
jedh | 0:f6d3b930f382 | 22 | #define SD_CS PTD4 |
jedh | 0:f6d3b930f382 | 23 | char sd_root_name[]="sd"; |
jedh | 0:f6d3b930f382 | 24 | char filename[80]; |
jedh | 0:f6d3b930f382 | 25 | SDFileSystem sd(SD_MOSI, SD_MISO, SD_SCK, SD_CS, sd_root_name); /* MOSI,MISO,SCK,CS, "Name of directory structure" */ |
jedh | 0:f6d3b930f382 | 26 | |
jedh | 0:f6d3b930f382 | 27 | #endif /* #ifdef USE_SD_CARD*/ |
jedh | 0:f6d3b930f382 | 28 | |
jedh | 0:f6d3b930f382 | 29 | #ifdef USE_DS1307 |
jedh | 0:f6d3b930f382 | 30 | #include "EE3420_time.h" |
jedh | 0:f6d3b930f382 | 31 | |
jedh | 0:f6d3b930f382 | 32 | #endif /* #ifdef USE_DS1307*/ |
jedh | 0:f6d3b930f382 | 33 | |
jedh | 0:f6d3b930f382 | 34 | #ifdef USE_SIMPLE_FIFO |
jedh | 0:f6d3b930f382 | 35 | |
jedh | 0:f6d3b930f382 | 36 | /* comment out the folloing definitions to use the library defaults */ |
jedh | 0:f6d3b930f382 | 37 | #define SIMPLE_FIFO_SIZE 32 |
jedh | 0:f6d3b930f382 | 38 | |
jedh | 0:f6d3b930f382 | 39 | #include "simple_fifo.h" |
jedh | 0:f6d3b930f382 | 40 | |
jedh | 0:f6d3b930f382 | 41 | #endif /* #ifdef USE_SIMPLE_FIFO*/ |
jedh | 0:f6d3b930f382 | 42 | |
jedh | 0:f6d3b930f382 | 43 | FIFO_FLOAT scope_data; |
jedh | 0:f6d3b930f382 | 44 | int samples_active=0; |
jedh | 0:f6d3b930f382 | 45 | float voltage_level; |
jedh | 0:f6d3b930f382 | 46 | float ftemp; |
jedh | 0:f6d3b930f382 | 47 | char timestr[80]; |
jedh | 0:f6d3b930f382 | 48 | |
jedh | 0:f6d3b930f382 | 49 | int sample_count=0; |
jedh | 0:f6d3b930f382 | 50 | |
jedh | 0:f6d3b930f382 | 51 | AnalogIn voltage_sensor(PTB0); |
jedh | 0:f6d3b930f382 | 52 | InterruptIn left_button(PTC12); /* button labeled SW3, wired active-low needing pull-up */ |
jedh | 0:f6d3b930f382 | 53 | Ticker t; |
jedh | 0:f6d3b930f382 | 54 | #define SAMPLE_FREQUENCY 5000.0 |
jedh | 0:f6d3b930f382 | 55 | |
jedh | 0:f6d3b930f382 | 56 | void take_sample() |
jedh | 0:f6d3b930f382 | 57 | { |
jedh | 0:f6d3b930f382 | 58 | if(samples_active==1) |
jedh | 0:f6d3b930f382 | 59 | { |
jedh | 0:f6d3b930f382 | 60 | voltage_level=voltage_sensor.read(); |
jedh | 0:f6d3b930f382 | 61 | /*if(fifo_float_writable(&scope_data)) |
jedh | 0:f6d3b930f382 | 62 | { |
jedh | 0:f6d3b930f382 | 63 | fifo_float_write(&scope_data,voltage_level); |
jedh | 0:f6d3b930f382 | 64 | } |
jedh | 0:f6d3b930f382 | 65 | else |
jedh | 0:f6d3b930f382 | 66 | { |
jedh | 0:f6d3b930f382 | 67 | printf("fifo overrun\n"); |
jedh | 0:f6d3b930f382 | 68 | samples_active=0; |
jedh | 0:f6d3b930f382 | 69 | }*/ |
jedh | 0:f6d3b930f382 | 70 | |
jedh | 0:f6d3b930f382 | 71 | |
jedh | 0:f6d3b930f382 | 72 | sample_count++; |
jedh | 0:f6d3b930f382 | 73 | } |
jedh | 0:f6d3b930f382 | 74 | if(sample_count>= 2000) |
jedh | 0:f6d3b930f382 | 75 | { |
jedh | 0:f6d3b930f382 | 76 | samples_active=0; |
jedh | 0:f6d3b930f382 | 77 | } |
jedh | 0:f6d3b930f382 | 78 | } |
jedh | 0:f6d3b930f382 | 79 | |
jedh | 0:f6d3b930f382 | 80 | void start_sample() |
jedh | 0:f6d3b930f382 | 81 | { |
jedh | 0:f6d3b930f382 | 82 | if(samples_active==0) |
jedh | 0:f6d3b930f382 | 83 | { |
jedh | 0:f6d3b930f382 | 84 | fifo_float_init(&scope_data); |
jedh | 0:f6d3b930f382 | 85 | sample_count=0; |
jedh | 0:f6d3b930f382 | 86 | samples_active=1; |
jedh | 0:f6d3b930f382 | 87 | } |
jedh | 0:f6d3b930f382 | 88 | else |
jedh | 0:f6d3b930f382 | 89 | { |
jedh | 0:f6d3b930f382 | 90 | samples_active=0; |
jedh | 0:f6d3b930f382 | 91 | } |
jedh | 0:f6d3b930f382 | 92 | |
jedh | 0:f6d3b930f382 | 93 | } |
jedh | 0:f6d3b930f382 | 94 | |
jedh | 0:f6d3b930f382 | 95 | int main() |
jedh | 0:f6d3b930f382 | 96 | { |
jedh | 0:f6d3b930f382 | 97 | |
jedh | 0:f6d3b930f382 | 98 | #ifdef USE_PC |
jedh | 0:f6d3b930f382 | 99 | pc.baud(115200); /* set serial port speed to 115200 - must be matched in terminal emulator */ |
jedh | 0:f6d3b930f382 | 100 | #endif |
jedh | 0:f6d3b930f382 | 101 | #ifdef USE_SLCD |
jedh | 0:f6d3b930f382 | 102 | slcd.All_Segments(0); |
jedh | 0:f6d3b930f382 | 103 | #endif |
jedh | 0:f6d3b930f382 | 104 | #ifdef USE_CHARACTER_LCD |
jedh | 0:f6d3b930f382 | 105 | character_lcd_initialize(); |
jedh | 0:f6d3b930f382 | 106 | #endif |
jedh | 0:f6d3b930f382 | 107 | |
jedh | 0:f6d3b930f382 | 108 | fifo_float_init(&scope_data); |
jedh | 0:f6d3b930f382 | 109 | |
jedh | 0:f6d3b930f382 | 110 | #ifdef USE_PC |
jedh | 0:f6d3b930f382 | 111 | pc.printf("\n"); |
jedh | 0:f6d3b930f382 | 112 | #endif |
jedh | 0:f6d3b930f382 | 113 | |
jedh | 0:f6d3b930f382 | 114 | get_DS1307_time(&EE3420_DS1307_data); |
jedh | 0:f6d3b930f382 | 115 | set_KL46Z_RTC_from_DS1307(); |
jedh | 0:f6d3b930f382 | 116 | |
jedh | 0:f6d3b930f382 | 117 | sprintf(filename,"/sd/voltage.csv"); |
jedh | 0:f6d3b930f382 | 118 | |
jedh | 0:f6d3b930f382 | 119 | FILE *fp = fopen(filename, "w"); |
jedh | 0:f6d3b930f382 | 120 | if(fp == NULL) |
jedh | 0:f6d3b930f382 | 121 | { |
jedh | 0:f6d3b930f382 | 122 | error("Could not open file ""%s"" for write\n", filename); |
jedh | 0:f6d3b930f382 | 123 | } |
jedh | 0:f6d3b930f382 | 124 | fprintf(fp,"date, time, scopes\n"); |
jedh | 0:f6d3b930f382 | 125 | fclose(fp); |
jedh | 0:f6d3b930f382 | 126 | |
jedh | 0:f6d3b930f382 | 127 | samples_active=0; |
jedh | 0:f6d3b930f382 | 128 | |
jedh | 0:f6d3b930f382 | 129 | left_button.mode(PullUp); |
jedh | 0:f6d3b930f382 | 130 | left_button.fall(&start_sample); |
jedh | 0:f6d3b930f382 | 131 | |
jedh | 0:f6d3b930f382 | 132 | t.attach(&take_sample,1.0/SAMPLE_FREQUENCY); |
jedh | 0:f6d3b930f382 | 133 | |
jedh | 0:f6d3b930f382 | 134 | while(true) |
jedh | 0:f6d3b930f382 | 135 | { |
jedh | 0:f6d3b930f382 | 136 | |
jedh | 0:f6d3b930f382 | 137 | if(fifo_float_readable(&scope_data)) |
jedh | 0:f6d3b930f382 | 138 | { |
jedh | 0:f6d3b930f382 | 139 | |
jedh | 0:f6d3b930f382 | 140 | fp = fopen(filename, "a"); |
jedh | 0:f6d3b930f382 | 141 | while(fifo_float_readable(&scope_data)) |
jedh | 0:f6d3b930f382 | 142 | { |
jedh | 0:f6d3b930f382 | 143 | //get_DS1307_time(&EE3420_DS1307_data); |
jedh | 0:f6d3b930f382 | 144 | //format_time_string_24(&EE3420_DS1307_data, timestr); |
jedh | 0:f6d3b930f382 | 145 | fifo_float_read(&scope_data,&ftemp); |
jedh | 0:f6d3b930f382 | 146 | //fprintf(fp, "20%02i/%02i/%02i, %02i:%02i:%02i, %f\n",EE3420_DS1307_data.year,EE3420_DS1307_data.month, |
jedh | 0:f6d3b930f382 | 147 | //EE3420_DS1307_data.day,EE3420_DS1307_data.hours,EE3420_DS1307_data.min,EE3420_DS1307_data.sec,ftemp); |
jedh | 0:f6d3b930f382 | 148 | fprintf(fp, "%f\n",ftemp); |
jedh | 0:f6d3b930f382 | 149 | pc.printf("%f\n",ftemp); |
jedh | 0:f6d3b930f382 | 150 | } |
jedh | 0:f6d3b930f382 | 151 | fclose(fp); |
jedh | 0:f6d3b930f382 | 152 | } |
jedh | 0:f6d3b930f382 | 153 | } |
jedh | 0:f6d3b930f382 | 154 | } //end of main() |
jedh | 0:f6d3b930f382 | 155 | |
jedh | 0:f6d3b930f382 | 156 |