When calling FATEngineStart , the fifth parameter affects the readOnly setting. Set to anything other than 0 and you can't write to the card.
fat
.FATEngineStart
(_SD_DO, _SD_CLK, _SD_DI, _SD_CS,
0
)
fat
.mountPartition
(
0
)
fat
.newFile
(string(
"test.txt"
))
fat
.closeFile
()
fat
.openFile
(string(
"test.txt"
),
"w"
)
fat
.writeString
(string(
"this is file test.txt"
))
fat
.closeFile
()
fat
.openFile
(string(
"test.txt"
),
"r"
)
fat
.readData
(
@buffer
,fat.fileSize())
debug
(zstr(
@buffer
))
Refer to this forum post for object files:
https://forums.parallax.com/discussion/175711/cant-get-the-fat32-object-to-create-a-new-file