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grlib/occan: Fix baud rate calculation

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Fixes #5166
This commit is contained in:
Jan Sommer
2024-12-03 09:10:02 +01:00
committed by Joel Sherrill
parent 23fa41ecae
commit ab21dcba06
2 changed files with 6 additions and 3 deletions
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5
bsps/shared/grlib/can/canbtrs.c
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@@ -62,7 +62,8 @@ int grlib_canbtrs_calc_timing(
tseg++) {
/* calculate scaler */
tmp = ((br->divfactor + tseg) * baud);
sc = (core_hz * 2)/ tmp - core_hz / tmp;
/* Core frequency is always divided by 2 before scaler */
sc = core_hz / (2 * tmp);
if (sc <= 0 || sc > br->max_scaler)
continue;
if (br->has_bpr &&
@@ -71,7 +72,7 @@ int grlib_canbtrs_calc_timing(
((sc > 256 * 4) && (sc <= 256 * 8) && (sc & 0x7))))
continue;
error = baud - core_hz / (sc * (br->divfactor + tseg));
error = baud - core_hz / (2 * sc * (br->divfactor + tseg));
#ifdef GRLIB_CANBTRS_DEBUG
printf(" baud=%d, tseg=%d, sc=%d, error=%d\n",
baud, tseg, sc, error);