mbed official / USBHost

USBHost library. NOTE: This library is only officially supported on the LPC1768 platform. For more information, please see the handbook page.

Dependencies:   FATFileSystem mbed-rtos

Dependents:   BTstack WallbotWii SD to Flash Data Transfer USBHost-MSD_HelloWorld ... more

Legacy Warning

This is an mbed 2 library. To learn more about mbed OS 5, visit the docs.

Pull requests against this repository are no longer supported. Please raise against mbed OS 5 as documented above.

Files at this revision

API Documentation at this revision

Revision 26:607951c26872, committed 2014-08-18

Comitter:
mbed_official
Date:
Mon Aug 18 13:45:26 2014 +0100
Parent:
25:45dcbf2ba11d
Child:
27:4206883f4cb7
Commit message:
Synchronized with git revision e91e6e69d628a619396c2140bd068b5dbb0986db

Full URL: https://github.com/mbedmicro/mbed/commit/e91e6e69d628a619396c2140bd068b5dbb0986db/

Added count argument to disk read/write

Changed in this revision

USBHostMSD/USBHostMSD.cpp Show annotated file Show diff for this revision Revisions of this file
USBHostMSD/USBHostMSD.h Show annotated file Show diff for this revision Revisions of this file 
--- a/USBHostMSD/USBHostMSD.cpp	Fri Jul 11 10:00:48 2014 +0100
+++ b/USBHostMSD/USBHostMSD.cpp	Mon Aug 18 13:45:26 2014 +0100
@@ -323,24 +323,34 @@
     return readCapacity();
 }
 
-int USBHostMSD::disk_write(const uint8_t *buffer, uint64_t block_number) {
-    USB_DBG("FILESYSTEM: write block: %lld", block_number);
+int USBHostMSD::disk_write(const uint8_t* buffer, uint64_t block_number, uint8_t count) {
+    USB_DBG("FILESYSTEM: write block: %lld, count: %d", block_number, count);
     if (!disk_init) {
         disk_initialize();
     }
     if (!disk_init)
         return -1;
-    return dataTransfer((uint8_t *)buffer, block_number, 1, HOST_TO_DEVICE);
+    for (uint64_t b = block_number; b < block_number + count; b++) {
+        if (dataTransfer((uint8_t*)buffer, b, 1, HOST_TO_DEVICE))
+            return -1;
+        buffer += 512;
+    }
+    return 0;
 }
 
-int USBHostMSD::disk_read(uint8_t * buffer, uint64_t block_number) {
-    USB_DBG("FILESYSTEM: read block %lld", block_number);
+int USBHostMSD::disk_read(uint8_t* buffer, uint64_t block_number, uint8_t count) {
+    USB_DBG("FILESYSTEM: read block: %lld, count: %d", block_number, count);
     if (!disk_init) {
         disk_initialize();
     }
     if (!disk_init)
         return -1;
-    return dataTransfer((uint8_t *)buffer, block_number, 1, DEVICE_TO_HOST);
+    for (uint64_t b = block_number; b < block_number + count; b++) {
+        if (dataTransfer((uint8_t*)buffer, b, 1, DEVICE_TO_HOST))
+            return -1;
+        buffer += 512;
+    }
+    return 0;
 }
 
 uint64_t USBHostMSD::disk_sectors() {

--- a/USBHostMSD/USBHostMSD.h	Fri Jul 11 10:00:48 2014 +0100
+++ b/USBHostMSD/USBHostMSD.h	Mon Aug 18 13:45:26 2014 +0100
@@ -59,8 +59,8 @@
     // From FATFileSystem
     virtual int disk_initialize();
     virtual int disk_status() {return 0;};
-    virtual int disk_read(uint8_t * buffer, uint64_t sector);
-    virtual int disk_write(const uint8_t * buffer, uint64_t sector);
+    virtual int disk_read(uint8_t* buffer, uint64_t sector, uint8_t count);
+    virtual int disk_write(const uint8_t* buffer, uint64_t sector, uint8_t count);
     virtual int disk_sync() {return 0;};
     virtual uint64_t disk_sectors();