Skip to content

drivers: counter: max32: Fix prescaler configuration #97711

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 20, 2025
Merged

drivers: counter: max32: Fix prescaler configuration #97711

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
a5d327d
drivers: counter: max32: Fix prescaler configuration
hfakkiz Oct 16, 2025
5902b57
drivers: pwm: max32: Simplify prescaler calculation
ttmut Oct 20, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
7 changes: 1 addition & 6 deletions drivers/counter/counter_max32_timer.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -246,12 +246,7 @@ static int max32_counter_init(const struct device *dev)
int prescaler_index;

prescaler_index = LOG2(cfg->prescaler);
if (prescaler_index == 0) {
tmr_cfg.pres = TMR_PRES_1; /* TMR_PRES_1 is 0 */
} else {
/* TMR_PRES_2 is 1<<X */
tmr_cfg.pres = TMR_PRES_2 + (prescaler_index - 1);
}
tmr_cfg.pres = prescaler_index * TMR_PRES_2;
tmr_cfg.mode = TMR_MODE_COMPARE;
tmr_cfg.cmp_cnt = cfg->info.max_top_value;
tmr_cfg.bitMode = 0; /* Timer Mode 32 bit */
Expand Down
7 changes: 1 addition & 6 deletions drivers/pwm/pwm_max32.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -40,14 +40,9 @@ static int api_set_cycles(const struct device *dev, uint32_t channel, uint32_t p
mxc_tmr_regs_t *regs = cfg->regs;
wrap_mxc_tmr_cfg_t pwm_cfg;
int prescaler_index;
mxc_tmr_pres_t tmr_prescaler_lut[] = {
TMR_PRES_1, TMR_PRES_2, TMR_PRES_4, TMR_PRES_8, TMR_PRES_16,
TMR_PRES_32, TMR_PRES_64, TMR_PRES_128, TMR_PRES_256, TMR_PRES_512,
TMR_PRES_1024, TMR_PRES_2048, TMR_PRES_4096};

prescaler_index = LOG2(cfg->prescaler);
pwm_cfg.pres = tmr_prescaler_lut[prescaler_index];

pwm_cfg.pres = prescaler_index * TMR_PRES_2;
pwm_cfg.mode = TMR_MODE_PWM;
pwm_cfg.cmp_cnt = period_cycles;
pwm_cfg.bitMode = 0; /* Timer Mode 32 bit */
Expand Down