Add SD card example for Black F407VE

STM32/libraries/BoardExamples/examples/BlackF407VE/SDIODirListWriteRead/SDIODirListWriteRead.ino

@@ -0,0 +1,68 @@
+// 1. Install SdFat-beta from https://github.com/greiman/SdFat-beta
+// 2. In SdFatConfig.h, Change ENABLE_SDIO_CLASS 0 to 1
+
+
+#include "Arduino.h"
+#include "SDIO.h"
+#include "STM32SdFatSdio.h"
+
+STM32SdFatSdio sd;
+
+void setup() {
+    Serial.begin(115200);
+
+    for(int i=0; i<5; i++) {
+        delay(1000);
+        Serial.print(".");
+    }
+}
+
+void loop() {
+    Serial.println("Starting");
+    delay(1000);
+
+    if (!sd.begin()) {
+      Serial.println("Card error");
+      return;
+    }
+
+    ///////////////
+
+    Serial.println("LS:");
+    sd.ls(LS_R | LS_DATE | LS_SIZE);
+
+    ///////////////
+
+    File file;
+
+    Serial.println("Writing:");
+    file = sd.open("test.txt", FILE_WRITE);
+    if (file) {
+        file.print("Testing write\n");
+        file.close();
+    } else {
+        Serial.print("Error opening file");
+    }
+
+    ///////////////
+
+    Serial.println("Reading:");
+    file = sd.open("test.txt");
+    if (file) {
+        while (file.available()) {
+          Serial.write(file.read());
+        }
+        file.close();
+    } else {
+        Serial.print("Error opening file");
+    }
+
+    ///////////////
+
+    for(int i=0; i<5; i++) {
+        delay(1000);
+        Serial.print(".");
+    }
+    Serial.println();
+
+}

STM32/libraries/BoardExamples/examples/BlackF407VE/SDIODirListWriteRead/STM32SdFatSdio.h

@@ -0,0 +1,38 @@
+#ifndef _STM32_SDFAT_H_INCLUDED
+#define _STM32_SDFAT_H_INCLUDED
+
+#include "SdFat.h"
+#include "SDIO.h"
+
+
+class Stm32SdioCard : public BaseBlockDriver  {
+  public:
+    bool begin() {
+        return sdio.begin();
+    }
+    bool syncBlocks() {
+        return true;
+    }
+    bool readBlock(uint32_t block, uint8_t* dst) {
+        return sdio.readBlocks(block, dst, 1);
+    };
+    bool writeBlock(uint32_t block, const uint8_t* src) {
+        return sdio.writeBlocks(block, src, 1);
+    };
+    bool readBlocks(uint32_t block, uint8_t* dst, size_t nb) {
+        return sdio.readBlocks(block, dst, nb);
+    };
+    bool writeBlocks(uint32_t block, const uint8_t* src, size_t nb) {
+        return sdio.writeBlocks(block, src, nb);
+    };
+  private:
+    SDIOClass sdio;
+};
+class STM32SdFatSdio : public SdFileSystem<Stm32SdioCard> {
+ public:
+  bool begin() {
+    return m_card.begin() && SdFileSystem::begin();
+  }
+};
+
+#endif