Added bluetooth and user I/O drivers

hardware/SD.c

@@ -1,6 +1,16 @@
 #include "SD.h"
 
-FATFS sdfs;    // FatFs work area 
+FATFS sdfs;
+
+uint8_t sd_scheduler_timer = 0;
+uint8_t sd_status = SD_STATUS_UNKNOWN;
+bool sd_mountstate = false;
+
+// Job flags
+bool sd_flag_needs_automount = false;
+bool sd_flag_needs_autounmount = false;
+bool sd_flag_was_automounted = false;
+bool sd_flag_was_autounmounted = false;
 
 void sd_init(void) {
     SPI_DDR |= _BV(SPI_MOSI) | _BV(SPI_CLK);
@@ -12,48 +22,144 @@ void sd_init(void) {
     SD_DETECT_PORT |= _BV(SD_DETECT_PIN); // Enable pull-up
 }
 
-// TODO: Remove this
-void sd_test(void) {
-    printf("Testing SD card functions, waiting for card...\r\n");
+void sd_automounted_hook(void) {
+    sd_statuschange_indication(1);
+}
 
-    FRESULT res = 0xFF;
-    while (res != 0) {
-        res = f_mount(&sdfs, "", 1);
-        printf("SD Detect: %d\r\n", (SD_DETECT_INPUT & _BV(SD_DETECT_PIN)));
-        printf("Res: %d\r\n", res);
-        delay_ms(500);
+void sd_autounmounted_hook(void) {
+    sd_statuschange_indication(0);
+}
+
+void sd_jobs(void) {
+    if (sd_flag_needs_automount) {
+        sd_flag_needs_automount = false;
+        sd_automount();
     }
 
-    char str[12];
-    DWORD sn;
-    f_getlabel("", str, &sn);
-
-    printf("Label: %s, SN: %lu\r\n", str, sn);
-
-    FIL fil;       
-    char line[100];
-    FRESULT fr;    
-
-    
-    fr = f_open(&fil, "file1.txt", FA_READ);
-    printf("File open result: %d\r\nContents:\r\n", fr);
-
-    
-    while (f_gets(line, sizeof line, &fil)) {
-        printf(line);
+    if (sd_flag_needs_autounmount) {
+        sd_flag_needs_autounmount = false;
+        sd_autounmount();
     }
-    printf("\r\n");
 
-    f_close(&fil);
+    if (sd_flag_was_automounted) {
+        sd_flag_was_automounted = false;
+        sd_automounted_hook();
+    }
 
-    printf("Returning from SD test\r\n");
+    if (sd_flag_was_autounmounted) {
+        sd_flag_was_autounmounted = false;
+        sd_autounmounted_hook();
+    }
+}
+
+void sd_statuschange_indication(uint8_t pattern) {
+    if (pattern == 1) {
+        for (uint8_t i = 0; i < 4; i++) {
+            LED_STATUS_OFF();
+            delay_ms(65);
+            LED_STATUS_ON();
+            delay_ms(30);
+        }
+    }
+    
+    if (pattern == 0) {
+        for (uint8_t i = 0; i < 2; i++) {
+            LED_STATUS_OFF();
+            delay_ms(250);
+            LED_STATUS_ON();
+            delay_ms(20);
+        }
+    }
+    
+}
+
+bool sd_inserted(void) {
+    if (sd_status & SD_STATUS_NODISK) {
+        return false;
+    } else {
+        return true;
+    }
+
+}
+
+bool sd_card_ready(void) {
+    if (sd_status == SD_STATUS_READY) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool sd_mounted(void) {
+    return sd_mountstate;
+}
+
+bool sd_mount(void) {
+    if (sd_inserted()) {
+        FRESULT mount_result = 0xFF;
+        mount_result = f_mount(&sdfs, "", 1);
+
+        if (mount_result == 0) {
+            sd_mountstate = true;
+            
+        } else {
+            sd_mountstate = false;
+        }
+
+        return sd_mountstate;
+    } else {
+        return false;
+    }
+}
+
+bool sd_unmount(void) {
+    FRESULT unmount_result = 0xFF;
+    unmount_result = f_mount(0, "", 0);
+
+    if (unmount_result == 0) {
+        sd_mountstate = false;
+        return true;
+    } else {
+        return false;
+    }
+}
+
+void sd_automount(void) {
+    if (sd_mount()) {
+        sd_automounted_hook();
+    }
+}
+
+void sd_autounmount(void) {
+    if (sd_unmount()) {
+        sd_autounmounted_hook();
+    }
+}
+
+void sd_scheduler(void) {
+    sd_scheduler_timer++;
+
+    disk_timerproc();
+    sd_status = disk_status(0);
+    
+    if (sd_scheduler_timer % 50 == 0) {
+        sd_scheduler_timer = 0;
+
+        if (!sd_mounted() && sd_inserted()) {
+            sd_flag_needs_automount = true;
+        }
+
+        if (!sd_inserted() && sd_mounted()) {
+            sd_flag_needs_autounmount = true;
+        }
+    }
 }
 
 // TODO: Get time from RTC or host
 DWORD get_fattime (void)
 {
     // Returns current time packed into a DWORD variable 
-    return    ((DWORD)(2013 - 1980) << 25)  // Year 2013 
+    return    ((DWORD)(2018 - 1980) << 25)  // Year 2013 
     | ((DWORD)8 << 21)              // Month 7 
     | ((DWORD)2 << 16)              // Mday 28 
     | ((DWORD)20 << 11)             // Hour 0..24