Github/littlefs
1
Fork 0
Code Actions Activity

Added dbgrbyd.py script, fixed some small things in rbyd commit

Browse Source 
- We need to actually write the perturb bit
- It helps to encode the crc's leb128 length field correctly
This commit is contained in:
Christopher Haster
2022-12-20 18:59:39 -06:00
parent 2802880eaa
commit ad00ca79e2
2 changed files with 227 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lfs.c
+2 -2
View File
@@ -1424,13 +1424,13 @@ static int lfs_rbyd_commit(lfs_t *lfs, lfs_rbyd_t *rbyd,
// get around this catch-22 we just always write a fully-expanded leb128
// encoding
uint8_t buffer[1+5+4];
buffer[0] = LFS_MKRTAG(CRC0, 0, 0) << 1;
buffer[0] = (LFS_MKRTAG(CRC0, 0, 0) << 1) | (lfs_popc(crc) & 1);
lfs_off_t padding = aligned - (off + 1+5);
buffer[1] = 0x80 | (0x7f & (padding >> 0));
buffer[2] = 0x80 | (0x7f & (padding >> 7));
buffer[3] = 0x80 | (0x7f & (padding >> 14));
buffer[4] = 0x00 | (0x7f & (padding >> 21));
buffer[4] = 0x80 | (0x7f & (padding >> 21));
buffer[5] = 0x00 | (0x7f & (padding >> 28));
crc = lfs_crc32c(crc, buffer, 1+5);