Ported to T4

-added T4 aware functions
-chenged transfer from polling to internal DMA (blocking mode)

examples/CardInfo/CardInfo.ino

@@ -37,7 +37,7 @@ SdFile root;
 // Wiz820+SD board: pin 4
 // Teensy 2.0: pin 0
 // Teensy++ 2.0: pin 20
-const int chipSelect = 4;    
+const int chipSelect = BUILTIN_SDCARD;    
 
 void setup()
 {

utility/NXP_SDHC.h

@@ -0,0 +1,16 @@
+#ifndef _NXP_SDHC_H
+#define _NXP_SDHC_H
+
+#define SDHC_STATUS_NOINIT              0x01    /* Drive not initialized */
+#define SDHC_STATUS_NODISK              0x02    /* No medium in the drive */
+#define SDHC_STATUS_PROTECT             0x04    /* Write protected */
+
+uint8_t SDHC_CardInit(void);
+uint8_t SDHC_CardGetType(void);
+//uint8_t SDHC_CardGetStatus(void);
+//uint32_t SDHC_CardGetBlockCnt(void);
+
+int SDHC_CardReadBlock(void * buff, uint32_t sector);
+int SDHC_CardWriteBlock(const void * buff, uint32_t sector);
+
+#endif

utility/Sd2Card.h

@@ -74,15 +74,10 @@ uint8_t const SD_CARD_TYPE_SD2 = 2;
 /** High Capacity SD card */
 uint8_t const SD_CARD_TYPE_SDHC = 3;
 //------------------------------------------------------------------------------
-#if defined(__MK64FX512__) || defined(__MK66FX1M0__)
-extern "C" {
-uint8_t KinetisSDHC_InitCard(void);
-uint8_t KinetisSDHC_GetCardType(void);
-int KinetisSDHC_ReadBlock(void * buff, uint32_t sector);
-int KinetisSDHC_WriteBlock(const void * buff, uint32_t sector);
-}
+#if defined(__MK64FX512__) || defined(__MK66FX1M0__) || defined(__IMXRT1052__)
+	#include "NXP_SDHC.h"
+	#define BUILTIN_SDCARD 254
 #endif
-#define BUILTIN_SDCARD 254
 //------------------------------------------------------------------------------
 /**
  * \class Sd2Card
@@ -95,11 +90,11 @@ class Sd2Card {
   /* Initialize an SD flash memory card with the selected SPI clock rate
    * and the SD chip select pin.  */
   uint8_t init(uint8_t sckRateID, uint8_t chipSelectPin) {
-    #if defined(__MK64FX512__) || defined(__MK66FX1M0__)
+    #if defined(__MK64FX512__) || defined(__MK66FX1M0__) || defined(__IMXRT1052__)
     if (chipSelectPin == BUILTIN_SDCARD) {
       chipSelectPin_ = BUILTIN_SDCARD;
-      uint8_t ret = KinetisSDHC_InitCard();
-      type_ = KinetisSDHC_GetCardType();
+      uint8_t ret = SDHC_CardInit();
+      type_ = SDHC_CardGetType();
       return (ret == 0) ? true : false;
     }
     #endif
@@ -109,18 +104,18 @@ class Sd2Card {
   uint8_t type(void) const {return type_;}
   /** Returns the current value, true or false, for partial block read. */
   uint8_t readBlock(uint32_t block, uint8_t* dst) {
-    #if defined(__MK64FX512__) || defined(__MK66FX1M0__)
+    #if defined(__MK64FX512__) || defined(__MK66FX1M0__) || defined(__IMXRT1052__)
     if (chipSelectPin_ == BUILTIN_SDCARD) {
-      return (KinetisSDHC_ReadBlock(dst, block) == 0) ? true : false;
+      return (SDHC_CardReadBlock(dst, block) == 0) ? true : false;
     }
     #endif
     return SD_readBlock(block, dst);
   }
   /** Return the card type: SD V1, SD V2 or SDHC */
   uint8_t writeBlock(uint32_t block, const uint8_t* src) {
-    #if defined(__MK64FX512__) || defined(__MK66FX1M0__)
+    #if defined(__MK64FX512__) || defined(__MK66FX1M0__) || defined(__IMXRT1052__)
     if (chipSelectPin_ == BUILTIN_SDCARD) {
-      return (KinetisSDHC_WriteBlock(src, block) == 0) ? true : false;
+      return (SDHC_CardWriteBlock(src, block) == 0) ? true : false;
     }
     #endif
     return SD_writeBlock(block, src);