Manuel Sanchez / Mbed 2 deprecated KL25_Funciona_SD

Reading Analog Ports and Saving in a micro SD CARD with the KL25z

Dependencies:   SDFileSystem mbed

Fork of SDFileSystem_HelloWorld by Neil Thiessen

main.cpp@10:ae649a596123, 2014-08-14 (annotated)

Committer:
neilt6
Date:
Thu Aug 14 22:28:28 2014 +0000
Revision:
10:ae649a596123
Parent:
7:17ca3091939f
Child:
11:2be49b81dc0b
Changed simple read/write test to performance test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
neilt6 0:8f2b6eed2a9d 1 #include "mbed.h"
neilt6 0:8f2b6eed2a9d 2 #include "SDFileSystem.h"
neilt6 0:8f2b6eed2a9d 3
neilt6 10:ae649a596123 4 Timer timer;
neilt6 0:8f2b6eed2a9d 5 DigitalIn button(p21, PullUp);
neilt6 10:ae649a596123 6 SDFileSystem sd(p5, p6, p7, p20, "sd", p22, SDFileSystem::SWITCH_NO, 25000000);
neilt6 10:ae649a596123 7 char buffer[4096];
neilt6 10:ae649a596123 8
neilt6 10:ae649a596123 9 void writeTest()
neilt6 10:ae649a596123 10 {
neilt6 10:ae649a596123 11 //Test write performance by creating a 1MB file
neilt6 10:ae649a596123 12 printf("Testing %iB write performance...", sizeof(buffer));
neilt6 10:ae649a596123 13 FileHandle* file = sd.open("Test File.bin", O_WRONLY | O_CREAT | O_TRUNC);
neilt6 10:ae649a596123 14 if (file != NULL) {
neilt6 10:ae649a596123 15 timer.start();
neilt6 10:ae649a596123 16 for (int i = 0; i < (1048576 / sizeof(buffer)); i++) {
neilt6 10:ae649a596123 17 if (file->write(buffer, sizeof(buffer)) != sizeof(buffer)) {
neilt6 10:ae649a596123 18 timer.stop();
neilt6 10:ae649a596123 19 printf("write error!\n");
neilt6 10:ae649a596123 20 timer.reset();
neilt6 10:ae649a596123 21 return;
neilt6 10:ae649a596123 22 }
neilt6 10:ae649a596123 23 }
neilt6 10:ae649a596123 24 timer.stop();
neilt6 10:ae649a596123 25 if (file->close())
neilt6 10:ae649a596123 26 printf("failed to close file!\n");
neilt6 10:ae649a596123 27 else
neilt6 10:ae649a596123 28 printf("done!\n\tResult: %.2fKB/s\n", 1024 / (timer.read_us() / 1000000.0));
neilt6 10:ae649a596123 29 timer.reset();
neilt6 10:ae649a596123 30 } else {
neilt6 10:ae649a596123 31 printf("failed to create file!\n");
neilt6 10:ae649a596123 32 }
neilt6 10:ae649a596123 33 }
neilt6 10:ae649a596123 34
neilt6 10:ae649a596123 35 void readTest()
neilt6 10:ae649a596123 36 {
neilt6 10:ae649a596123 37 //Test read performance by reading the 1MB file created by writeTest()
neilt6 10:ae649a596123 38 printf("Testing %iB read performance...", sizeof(buffer));
neilt6 10:ae649a596123 39 FileHandle* file = sd.open("Test File.bin", O_RDONLY);
neilt6 10:ae649a596123 40 if (file != NULL) {
neilt6 10:ae649a596123 41 timer.start();
neilt6 10:ae649a596123 42 while (file->read(buffer, sizeof(buffer)) == sizeof(buffer));
neilt6 10:ae649a596123 43 timer.stop();
neilt6 10:ae649a596123 44 if (file->close())
neilt6 10:ae649a596123 45 printf("failed to close file!\n");
neilt6 10:ae649a596123 46 else {
neilt6 10:ae649a596123 47 if (sd.remove("Test File.bin"))
neilt6 10:ae649a596123 48 printf("failed to delete file!\n");
neilt6 10:ae649a596123 49 else
neilt6 10:ae649a596123 50 printf("done!\n\tResult: %.2fKB/s\n", 1024 / (timer.read_us() / 1000000.0));
neilt6 10:ae649a596123 51 }
neilt6 10:ae649a596123 52 timer.reset();
neilt6 10:ae649a596123 53 } else {
neilt6 10:ae649a596123 54 printf("failed to open file!\n");
neilt6 10:ae649a596123 55 }
neilt6 10:ae649a596123 56 }
neilt6 0:8f2b6eed2a9d 57
neilt6 0:8f2b6eed2a9d 58 int main()
neilt6 0:8f2b6eed2a9d 59 {
neilt6 10:ae649a596123 60 //Configure CRC and large frames
neilt6 10:ae649a596123 61 sd.crc(true);
neilt6 7:17ca3091939f 62 sd.large_frames(true);
neilt6 7:17ca3091939f 63
neilt6 10:ae649a596123 64 //Fill the buffer with random data for the write test
neilt6 10:ae649a596123 65 srand(time(NULL));
neilt6 10:ae649a596123 66 for (int i = 0; i < sizeof(buffer); i++)
neilt6 10:ae649a596123 67 buffer[i] = rand();
neilt6 10:ae649a596123 68
neilt6 0:8f2b6eed2a9d 69 while(1) {
neilt6 0:8f2b6eed2a9d 70 //Print the start message
neilt6 0:8f2b6eed2a9d 71 printf("\nPress the button to perform tests: ");
neilt6 0:8f2b6eed2a9d 72
neilt6 0:8f2b6eed2a9d 73 //Wait for the button to be pressed
neilt6 0:8f2b6eed2a9d 74 while(button);
neilt6 0:8f2b6eed2a9d 75
neilt6 0:8f2b6eed2a9d 76 //Display the card type and capacity
neilt6 0:8f2b6eed2a9d 77 printf("\nCard type: ");
neilt6 0:8f2b6eed2a9d 78 if (sd.card_type() == SDFileSystem::CARD_NONE)
neilt6 0:8f2b6eed2a9d 79 printf("None\n");
neilt6 0:8f2b6eed2a9d 80 else if (sd.card_type() == SDFileSystem::CARD_MMC)
neilt6 0:8f2b6eed2a9d 81 printf("MMC\n");
neilt6 0:8f2b6eed2a9d 82 else if (sd.card_type() == SDFileSystem::CARD_SD)
neilt6 0:8f2b6eed2a9d 83 printf("SD\n");
neilt6 0:8f2b6eed2a9d 84 else if (sd.card_type() == SDFileSystem::CARD_SDHC)
neilt6 0:8f2b6eed2a9d 85 printf("SDHC\n");
neilt6 0:8f2b6eed2a9d 86 else
neilt6 0:8f2b6eed2a9d 87 printf("Unknown\n");
neilt6 0:8f2b6eed2a9d 88 printf("Sectors: %llu\n", sd.disk_sectors());
neilt6 0:8f2b6eed2a9d 89 printf("Capacity: %.1fMB\n", (sd.disk_sectors() * 512) / 1048576.0);
neilt6 0:8f2b6eed2a9d 90
neilt6 10:ae649a596123 91 //Mount the filesystem
neilt6 10:ae649a596123 92 sd.mount();
neilt6 10:ae649a596123 93
neilt6 10:ae649a596123 94 /*//Format the card
neilt6 10:ae649a596123 95 printf("Formatting card...");
neilt6 0:8f2b6eed2a9d 96 if (sd.format() == 0)
neilt6 0:8f2b6eed2a9d 97 printf("success!\n");
neilt6 0:8f2b6eed2a9d 98 else
neilt6 0:8f2b6eed2a9d 99 printf("failed!\n");*/
neilt6 0:8f2b6eed2a9d 100
neilt6 10:ae649a596123 101 //Perform a read/write tests
neilt6 10:ae649a596123 102 writeTest();
neilt6 10:ae649a596123 103 readTest();
neilt6 0:8f2b6eed2a9d 104
neilt6 10:ae649a596123 105 //Unmount the filesystem
neilt6 10:ae649a596123 106 sd.unmount();
neilt6 0:8f2b6eed2a9d 107 }
neilt6 0:8f2b6eed2a9d 108 }