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Fix bug in modulo substitute.

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This commit is contained in:
Reinhard Panhuber 2020-09-23 21:36:30 +02:00
parent 9bdeafb295
commit 52c9a467b4
1 changed files with 2 additions and 2 deletions
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4
src/common/tusb_fifo.c
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@ -82,8 +82,8 @@ bool tu_fifo_config(tu_fifo_t *f, void* buffer, uint16_t depth, uint16_t item_si
static inline uint16_t _ff_mod(uint16_t idx, uint16_t depth) static inline uint16_t _ff_mod(uint16_t idx, uint16_t depth)
{ {
// return idx % depth; // return idx % depth;
idx -= depth & -(idx > depth); idx -= depth & -(idx >= depth);
return idx -= depth & -(idx > depth); return idx -= depth & -(idx >= depth);
} }
// send one item to FIFO WITHOUT updating write pointer // send one item to FIFO WITHOUT updating write pointer