Joris Aerts / SDFileSystem

A re-written SDFileSystem library with improved compatibility, CRC support, and card removal/replacement support.

Dependencies:   FATFileSystem

Fork of SDFileSystem by Neil Thiessen

Files at this revision

API Documentation at this revision

Revision 16:dca379d55382, committed 2014-12-29

Comitter:
jaerts
Date:
Mon Dec 29 15:26:39 2014 +0000
Parent:
15:c9e938f6934f
Commit message:
Add support for no card detect switch

Changed in this revision

SDFileSystem.cpp Show annotated file Show diff for this revision Revisions of this file
SDFileSystem.h Show annotated file Show diff for this revision Revisions of this file 
--- a/SDFileSystem.cpp	Mon Oct 27 17:02:05 2014 +0000
+++ b/SDFileSystem.cpp	Mon Dec 29 15:26:39 2014 +0000
@@ -48,11 +48,14 @@
         m_Cd.mode(PullUp);
         m_CdAssert = 0;
         m_Cd.rise(this, &SDFileSystem::onCardRemoval);
-    } else {
+    } else if (cdtype == SWITCH_NEG_NC) {
         m_Cd.mode(PullUp);
         m_CdAssert = 1;
         m_Cd.fall(this, &SDFileSystem::onCardRemoval);
     }
+    else {
+        m_CdAssert = -1;
+    }
 }
 
 SDFileSystem::CardType SDFileSystem::card_type()
@@ -403,8 +406,8 @@
 
 inline void SDFileSystem::checkSocket()
 {
-    //Check if a card is in the socket
-    if (m_Cd == m_CdAssert) {
+    //Check if a card is in the socket (or always asume it is when switch not used)
+    if (m_CdAssert == -1 || m_Cd == m_CdAssert) {
         //The socket is occupied, clear the STA_NODISK flag
         m_Status &= ~STA_NODISK;
     } else {

--- a/SDFileSystem.h	Mon Oct 27 17:02:05 2014 +0000
+++ b/SDFileSystem.h	Mon Dec 29 15:26:39 2014 +0000
@@ -67,6 +67,7 @@
     /** Represents the different card detect switch types
      */
     enum SwitchType {
+        SWITCH_NONE,    /**< Switch not used */
         SWITCH_POS_NO,  /**< Switch shorts to VDD when the socket is occupied (positive logic, normally open) */
         SWITCH_POS_NC,  /**< Switch shorts to VDD when the socket is empty (positive logic, normally closed) */
         SWITCH_NEG_NO,  /**< Switch shorts to GND when the socket is occupied (negative logic, normally open) */