Diff: source/sdcard.cpp

Revision:

51:a98ffbd41e76

Child:

52:701d0c2f47d7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/sdcard.cpp	Thu Mar 29 18:17:38 2018 +0000
@@ -0,0 +1,141 @@
+#include "sdcard.h"
+
+
+Timer timer;
+
+DigitalIn button(PC_13, PullUp);
+
+SDFileSystem sd(PA_7, PA_6, PA_5, PB_6, "sd", PA_8, SDFileSystem::SWITCH_NONE, 25000000);
+char buffer[4096];
+
+void writeTest()
+{
+    //Test write performance by creating a 1MB file
+    printf("Testing %iB write performance...\n\r", sizeof(buffer));
+    FileHandle* file = sd.open("Test File.bin", O_WRONLY | O_CREAT | O_TRUNC);
+    if (file != NULL) {
+        timer.start();
+        for (int i = 0; i < (1048576 / sizeof(buffer)); i++) {
+            if (file->write(buffer, sizeof(buffer)) != sizeof(buffer)) {
+                timer.stop();
+                printf("write error!\n\r");
+                timer.reset();
+                return;
+            }
+        }
+        timer.stop();
+        if (file->close())
+            printf("failed to close file!\n\r");
+        else
+            printf("done!\n\r\tResult: %.2fKB/s\n\r", 1024 / (timer.read_us() / 1000000.0));
+        timer.reset();
+    } else {
+        printf("failed to create file!\n\r");
+    }
+}
+
+void readTest()
+{
+    //Test read performance by reading the 1MB file created by writeTest()
+    printf("Testing %iB read performance...", sizeof(buffer));
+    FileHandle* file = sd.open("Test File.bin", O_RDONLY);
+    if (file != NULL) {
+        timer.start();
+        int iterations = 0;
+        while (file->read(buffer, sizeof(buffer)) == sizeof(buffer))
+            iterations++;
+        timer.stop();
+        if (iterations != (1048576 / sizeof(buffer)))
+            printf("read error!\n\r");
+        else if (file->close())
+            printf("failed to close file!\n\r");
+        else if (sd.remove("Test File.bin"))
+            printf("failed to delete file!\n\r");
+        else
+            printf("done!\n\r\tResult: %.2fKB/s\n\r", 1024 / (timer.read_us() / 1000000.0));
+        timer.reset();
+    } else {
+        printf("failed to open file!\n\r");
+    }
+}
+
+void testSd()
+{
+    //Configure CRC, large frames, and write validation
+    sd.crc(true);
+    sd.large_frames(true);
+    sd.write_validation(true);
+
+    //Fill the buffer with random data for the write test
+    srand(time(NULL));
+    for (int i = 0; i < sizeof(buffer); i++)
+        buffer[i] = rand();
+
+
+        //Print the start message
+        printf("\n\rPress the button to perform tests: ");
+
+
+        //Make sure a card is present
+        if (!sd.card_present()) {
+            printf("\n\rNo card present!\n\r");
+        }
+
+        //Try to mount the SD card
+        printf("\n\rMounting SD card...");
+        if (sd.mount() != 0) {
+            printf("failed!\n\r");
+        }
+        printf("success!\n\r");
+
+        //Display the card type
+        printf("\tCard type: ");
+        SDFileSystem::CardType cardType = sd.card_type();
+        if (cardType == SDFileSystem::CARD_NONE)
+            printf("None\n\r");
+        else if (cardType == SDFileSystem::CARD_MMC)
+            printf("MMC\n\r");
+        else if (cardType == SDFileSystem::CARD_SD)
+            printf("SD\n\r");
+        else if (cardType == SDFileSystem::CARD_SDHC)
+            printf("SDHC\n\r");
+        else
+            printf("Unknown\n\r");
+
+        //Display the card capacity
+        printf("\tSectors: %u\n\r", sd.disk_sectors());
+        printf("\tCapacity: %.1fMB\n\r", sd.disk_sectors() / 2048.0);
+
+        /*//Format the card
+        printf("Formatting SD card...");
+        if (sd.format() != 0) {
+            printf("failed!\n\r");
+            continue;
+        }
+        printf("success!\n\r");*/
+
+        //Perform a read/write test
+        writeTest();
+        readTest();
+
+
+
+        printf("write to SD card on a txt file:\n\r");
+        printf("\tHello World!\n\r");
+
+        FILE *fp = fopen("/sd/medication/sdtest.txt", "a");
+        if(fp == NULL) {
+            printf("\tCould not open file for write\n\r");
+        } else {
+            printf("\tfile opened\n\r");
+        }
+        
+        fprintf(fp, "Hello fun SD Card World!\n\r");
+        fclose(fp);
+        
+        printf("\tText written to SD card\n\r");
+        printf("\tGoodbye World!\n\r");
+        
+        //Unmount the SD card
+        sd.unmount();
+}