Commit f042d7a4 authored by Damien George's avatar Damien George
Browse files

stmhal: Fix edge case for timer PWM of 100%.

Also improve precision of calculating PWM percent in integer mode.
Also update teensy with edge case fix.
parent 85370873
......@@ -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;
}
......
......@@ -175,7 +175,7 @@ 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 = (float)cmp * 100.0 / (float)period;
if (cmp > period) {
if (cmp >= period) {
percent = 100.0;
} else {
percent = (float)cmp * 100.0 / (float)period;
......@@ -183,7 +183,7 @@ 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 {
percent = cmp * 100 / period;
......
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