Added a parameter for max files in SD (#2563)

Author: lbernstone

libraries/SD/src/SD.cpp

@@ -22,7 +22,7 @@ using namespace fs;
 
 SDFS::SDFS(FSImplPtr impl): FS(impl), _pdrv(0xFF) {}
 
-bool SDFS::begin(uint8_t ssPin, SPIClass &spi, uint32_t frequency, const char * mountpoint)
+bool SDFS::begin(uint8_t ssPin, SPIClass &spi, uint32_t frequency, const char * mountpoint, uint8_t max_files)
 {
     if(_pdrv != 0xFF) {
         return true;
@@ -35,7 +35,7 @@ bool SDFS::begin(uint8_t ssPin, SPIClass &spi, uint32_t frequency, const char *
         return false;
     }
 
-    if(!sdcard_mount(_pdrv, mountpoint)){
+    if(!sdcard_mount(_pdrv, mountpoint, max_files)){
         sdcard_unmount(_pdrv);
         sdcard_uninit(_pdrv);
         _pdrv = 0xFF;

libraries/SD/src/SD.h

@@ -28,7 +28,7 @@ class SDFS : public FS
 
 public:
     SDFS(FSImplPtr impl);
-    bool begin(uint8_t ssPin=SS, SPIClass &spi=SPI, uint32_t frequency=4000000, const char * mountpoint="/sd");
+    bool begin(uint8_t ssPin=SS, SPIClass &spi=SPI, uint32_t frequency=4000000, const char * mountpoint="/sd", uint8_t max_files=5);
     void end();
     sdcard_type_t cardType();
     uint64_t cardSize();

libraries/SD/src/sd_diskio.cpp

@@ -711,7 +711,7 @@ uint8_t sdcard_unmount(uint8_t pdrv)
     return 0;
 }
 
-bool sdcard_mount(uint8_t pdrv, const char* path)
+bool sdcard_mount(uint8_t pdrv, const char* path, uint8_t max_files)
 {
     ardu_sdcard_t * card = s_cards[pdrv];
     if(pdrv >= FF_VOLUMES || card == NULL){
@@ -725,7 +725,7 @@ bool sdcard_mount(uint8_t pdrv, const char* path)
 
     FATFS* fs;
     char drv[3] = {(char)('0' + pdrv), ':', 0};
-    esp_err_t err = esp_vfs_fat_register(path, drv, 5, &fs);
+    esp_err_t err = esp_vfs_fat_register(path, drv, max_files, &fs);
     if (err == ESP_ERR_INVALID_STATE) {
         log_e("esp_vfs_fat_register failed 0x(%x): SD is registered.", err);
         return false;

libraries/SD/src/sd_diskio.h

@@ -21,7 +21,7 @@
 uint8_t sdcard_init(uint8_t cs, SPIClass * spi, int hz);
 uint8_t sdcard_uninit(uint8_t pdrv);
 
-bool sdcard_mount(uint8_t pdrv, const char* path);
+bool sdcard_mount(uint8_t pdrv, const char* path, uint8_t max_files);
 uint8_t sdcard_unmount(uint8_t pdrv);
 
 sdcard_type_t sdcard_type(uint8_t pdrv);