ExFat VolumeBegin hangs when SD card is full #535
Description
I am using SDFat on a Teensy board.
When initialising a SdExFat instance using
sd.cardBegin(SDIO_CONFIG);
sd.volumeBegin();
while a SD card without empty clusters is inserted , the code hangs in volumeBegin.
Checking deeper, it seems that there is an infinite loop in ExFatPartition::bitmapFind
Exmaple code (also available in my example repo
#define DISABLE_FS_H_WARNING
#include "Arduino.h"
#include "SdFat.h"
void setup() {
Serial.begin(115200);
while (not Serial) ;
Serial.println("start");
auto sd = SdExFat{};
if (not sd.cardBegin(SdioConfig(FIFO_SDIO))) {
sd.initErrorHalt(&Serial);
}
Serial.println("card begin success");
if (not sd.volumeBegin()) {
sd.initErrorHalt(&Serial);
}
Serial.println("volume begin success");
if (sd.fatType() != FAT_TYPE_EXFAT) {
Serial.println("sd card not exfat");
}
Serial.println("end");
}
void loop() {}