ESP32 file creation problem spiffs.bin

maxgerhardt · May 6, 2020, 10:17pm

It is correct that the file size is always constant. It gets padded with filler values. Similiar question was already asked before: ESP8266 SIFFS.bin file to large. For ESP 32, it’s the same, see code.

github.com

espressif/arduino-esp32/blob/master/tools/gen_esp32part.py#L240


      
          
              for p in self:
                  if p.type == ptype and p.subtype == subtype:
                      yield p
              return
          
          def find_by_name(self, name):
              for p in self:
                  if p.name == name:
                      return p
              return None
          
          def verify(self):
              # verify each partition individually
              for p in self:
                  p.verify()
          
              # check on duplicate name
              names = [p.name for p in self]
              duplicates = set(n for n in names if names.count(n) > 1)

The size of the SPIFFS file is is chosen by the selected partition table, as documented. The default SPIFFS size is 0x170000 bytes aka crica 1.5MB.

github.com

espressif/arduino-esp32/blob/master/tools/partitions/default.csv

# Name,   Type, SubType, Offset,  Size, Flags
nvs,      data, nvs,     0x9000,  0x5000,
otadata,  data, ota,     0xe000,  0x2000,
app0,     app,  ota_0,   0x10000, 0x140000,
app1,     app,  ota_1,   0x150000,0x140000,
spiffs,   data, spiffs,  0x290000,0x160000,
coredump, data, coredump,0x3F0000,0x10000,

What exact error is occuring? SPIFFS upload shoult still be perfectly fine with OTA upload selected upload_protocol = espota and friends, docs)

Yes it did, see code above.