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spiffs prep

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added define for chuck size
update changelog
This commit is contained in:
mwalker33 2022-09-01 08:15:30 +10:00
commit 9406ef9fd3
3 changed files with 18 additions and 14 deletions
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28
armsrc/spiffs.c
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@ -433,26 +433,26 @@ int rdv40_spiffs_lazy_mount_rollback(int changed) {
// statement or some function taking function parameters
// TODO : forbid writing to a filename which already exists as lnk !
// TODO : forbid writing to a filename.lnk which already exists without lnk !
// Note: Writing in 8192 byte chucks helps to ensure "free space" has been erased by GC (Garbage collection)
// Note: Writing in SPIFFS_WRITE_CHUNK_SIZE (8192) byte chucks helps to ensure "free space" has been erased by GC (Garbage collection)
int rdv40_spiffs_write(const char *filename, uint8_t *src, uint32_t size, RDV40SpiFFSSafetyLevel level) {
RDV40_SPIFFS_SAFE_FUNCTION(
uint32_t idx;
if (size <= 8192) {
if (size <= SPIFFS_WRITE_CHUNK_SIZE) {
// write small file
write_to_spiffs(filename, src, size);
size = 0;
} else { //
// write first 8192 bytes
// write first SPIFFS_WRITE_CHUNK_SIZE bytes
// need to write the first chuck of data, then append
write_to_spiffs(filename, src, 8192);
write_to_spiffs(filename, src, SPIFFS_WRITE_CHUNK_SIZE);
}
// append remaing 8192 byte chuncks
for (idx = 1; idx < (size / 8192); idx++) {
append_to_spiffs(filename, &src[8192 * idx], 8192);
// append remaing SPIFFS_WRITE_CHUNK_SIZE byte chuncks
for (idx = 1; idx < (size / SPIFFS_WRITE_CHUNK_SIZE); idx++) {
append_to_spiffs(filename, &src[SPIFFS_WRITE_CHUNK_SIZE * idx], SPIFFS_WRITE_CHUNK_SIZE);
}
// append remaing bytes
if (((int64_t)size - (8192 * idx)) > 0) {
append_to_spiffs(filename, &src[8192 * idx], size - (8192 * idx));
if (((int64_t)size - (SPIFFS_WRITE_CHUNK_SIZE * idx)) > 0) {
append_to_spiffs(filename, &src[SPIFFS_WRITE_CHUNK_SIZE * idx], size - (SPIFFS_WRITE_CHUNK_SIZE * idx));
}
)
}
@ -460,13 +460,13 @@ int rdv40_spiffs_write(const char *filename, uint8_t *src, uint32_t size, RDV40S
int rdv40_spiffs_append(const char *filename, uint8_t *src, uint32_t size, RDV40SpiFFSSafetyLevel level) {
RDV40_SPIFFS_SAFE_FUNCTION(
uint32_t idx;
// Append any 8192 byte chunks
for (idx = 0; idx < (size/8192); idx++) {
append_to_spiffs(filename, &src[8192 * idx], 8192);
// Append any SPIFFS_WRITE_CHUNK_SIZE byte chunks
for (idx = 0; idx < (size/SPIFFS_WRITE_CHUNK_SIZE); idx++) {
append_to_spiffs(filename, &src[SPIFFS_WRITE_CHUNK_SIZE * idx], SPIFFS_WRITE_CHUNK_SIZE);
}
// Append remain bytes
if (((int64_t)size - (8192 * idx)) > 0) {
append_to_spiffs(filename, &src[8192 * idx], size - (8192 * idx));
if (((int64_t)size - (SPIFFS_WRITE_CHUNK_SIZE * idx)) > 0) {
append_to_spiffs(filename, &src[SPIFFS_WRITE_CHUNK_SIZE * idx], size - (SPIFFS_WRITE_CHUNK_SIZE * idx));
}
)
}