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-rw-r--r--stmhal/timer.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/stmhal/timer.c b/stmhal/timer.c
index 026d11c815..14ef3cc4a9 100644
--- a/stmhal/timer.c
+++ b/stmhal/timer.c
@@ -326,7 +326,7 @@ STATIC uint32_t compute_pwm_value_from_percent(uint32_t period, mp_obj_t percent
STATIC mp_obj_t compute_percent_from_pwm_value(uint32_t period, uint32_t cmp) {
#if MICROPY_PY_BUILTINS_FLOAT
float percent;
- if (cmp > period) {
+ if (cmp >= period) {
percent = 100.0;
} else {
percent = (float)cmp * 100.0 / ((float)period);
@@ -334,11 +334,10 @@ STATIC mp_obj_t compute_percent_from_pwm_value(uint32_t period, uint32_t cmp) {
return mp_obj_new_float(percent);
#else
mp_int_t percent;
- if (cmp > period) {
+ if (cmp >= period) {
percent = 100;
- } else if (period > MAX_PERIOD_DIV_100) {
- // We divide the top and bottom by 128, and then do the math.
- percent = (cmp / 128) * 100 / (period / 128);
+ } else if (cmp > MAX_PERIOD_DIV_100) {
+ percent = cmp / (period / 100);
} else {
percent = cmp * 100 / period;
}