diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/tusb_option.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/tusb_option.h b/src/tusb_option.h index 68eb4882c..64915cf62 100644 --- a/src/tusb_option.h +++ b/src/tusb_option.h @@ -530,9 +530,11 @@ #endif // MAX3421 Host max. transfer attemps per frame (except control and iso) -// temporary only one attemp (no retry) per frame allowed (more in work) // retry quantity = (CFG_TUH_MAX3421_MAX_ATTEMPS_PER_FRAME - 1) -// 0 = endless retries in current frame. is default to keep compatibility +// 0 = endless retries. is default to keep compatibility +// => this may overload MCU with permanently repeating NAK interrupts +// => possible increased USB traffic, increased latencies, reduced data throughput +// a usual attemp quantity is 3 (reference: the book "USB Complete" by Jan Axelson) #ifndef CFG_TUH_MAX3421_MAX_ATTEMPS_PER_FRAME #define CFG_TUH_MAX3421_MAX_ATTEMPS_PER_FRAME 0 #endif |