Fix wrong size reported for cards above 16GB

Fixes: espressif#803

Author: me-no-dev

libraries/SD/src/SD.cpp

@@ -80,7 +80,7 @@ uint64_t SDFS::totalBytes()
 FATFS* fsinfo;
 DWORD fre_clust;
 if(f_getfree("0:",&fre_clust,&fsinfo)!= 0) return 0;
- uint64_t size = (fsinfo->csize)*(fsinfo->n_fatent - 2)
+ uint64_t size = ((uint64_t)(fsinfo->csize))*(fsinfo->n_fatent - 2)
 #if _MAX_SS != 512
  *(fsinfo->ssize);
 #else
@@ -94,7 +94,7 @@ uint64_t SDFS::usedBytes()
 FATFS* fsinfo;
 DWORD fre_clust;
 if(f_getfree("0:",&fre_clust,&fsinfo)!= 0) return 0;
-uint64_t size = (fsinfo->csize)*((fsinfo->n_fatent - 2) - (fsinfo->free_clst))
+uint64_t size = ((uint64_t)(fsinfo->csize))*((fsinfo->n_fatent - 2) - (fsinfo->free_clst))
 #if _MAX_SS != 512
  *(fsinfo->ssize);
 #else

libraries/SD_MMC/src/SD_MMC.cpp

@@ -104,7 +104,7 @@ uint64_t SDMMCFS::totalBytes()
 FATFS* fsinfo;
 DWORD fre_clust;
 if(f_getfree("0:",&fre_clust,&fsinfo)!= 0) return 0;
- uint64_t size = (fsinfo->csize)*(fsinfo->n_fatent - 2)
+ uint64_t size = ((uint64_t)(fsinfo->csize))*(fsinfo->n_fatent - 2)
 #if _MAX_SS != 512
  *(fsinfo->ssize);
 #else
@@ -118,7 +118,7 @@ uint64_t SDMMCFS::usedBytes()
 FATFS* fsinfo;
 DWORD fre_clust;
 if(f_getfree("0:",&fre_clust,&fsinfo)!= 0) return 0;
-uint64_t size = (fsinfo->csize)*((fsinfo->n_fatent - 2) - (fsinfo->free_clst))
+uint64_t size = ((uint64_t)(fsinfo->csize))*((fsinfo->n_fatent - 2) - (fsinfo->free_clst))
 #if _MAX_SS != 512
  *(fsinfo->ssize);
 #else