Skip to content

drivers: pwm: pwm_stm32: Add 6-PWM support #57360

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 1 commit into from
May 15, 2023
Merged

drivers: pwm: pwm_stm32: Add 6-PWM support #57360

Changes from all commits
Commits
Show all changes
1 commit
Select commit
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
27 changes: 25 additions & 2 deletions drivers/pwm/pwm_stm32.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -242,6 +242,7 @@ static int pwm_stm32_set_cycles(const struct device *dev, uint32_t channel,

uint32_t ll_channel;
uint32_t current_ll_channel; /* complementary output if used */
uint32_t negative_ll_channel;

if (channel < 1u || channel > TIMER_MAX_CH) {
LOG_ERR("Invalid channel (%d)", channel);
Expand Down Expand Up @@ -269,16 +270,22 @@ static int pwm_stm32_set_cycles(const struct device *dev, uint32_t channel,

ll_channel = ch2ll[channel - 1u];

if (channel <= ARRAY_SIZE(ch2ll_n)) {
negative_ll_channel = ch2ll_n[channel - 1u];
} else {
negative_ll_channel = 0;
}

/* in LL_TIM_CC_DisableChannel and LL_TIM_CC_IsEnabledChannel,
* the channel param could be the complementary one
*/
if ((flags & STM32_PWM_COMPLEMENTARY_MASK) == STM32_PWM_COMPLEMENTARY) {
if (channel > ARRAY_SIZE(ch2ll_n)) {
if (!negative_ll_channel) {
/* setting a flag on a channel that has not this capability */
LOG_ERR("Channel %d has NO complementary output", channel);
return -EINVAL;
}
current_ll_channel = ch2ll_n[channel - 1u];
current_ll_channel = negative_ll_channel;
} else {
current_ll_channel = ll_channel;
}
Expand Down Expand Up @@ -315,9 +322,25 @@ static int pwm_stm32_set_cycles(const struct device *dev, uint32_t channel,
if ((flags & STM32_PWM_COMPLEMENTARY_MASK) == STM32_PWM_COMPLEMENTARY) {
oc_init.OCNState = LL_TIM_OCSTATE_ENABLE;
oc_init.OCNPolarity = get_polarity(flags);

/* inherit the polarity of the positive output */
oc_init.OCState = LL_TIM_CC_IsEnabledChannel(cfg->timer, ll_channel)
? LL_TIM_OCSTATE_ENABLE
: LL_TIM_OCSTATE_DISABLE;
oc_init.OCPolarity = LL_TIM_OC_GetPolarity(cfg->timer, ll_channel);
} else {
oc_init.OCState = LL_TIM_OCSTATE_ENABLE;
oc_init.OCPolarity = get_polarity(flags);

/* inherit the polarity of the negative output */
if (negative_ll_channel) {
oc_init.OCNState =
LL_TIM_CC_IsEnabledChannel(cfg->timer, negative_ll_channel)
? LL_TIM_OCSTATE_ENABLE
: LL_TIM_OCSTATE_DISABLE;
oc_init.OCNPolarity =
LL_TIM_OC_GetPolarity(cfg->timer, negative_ll_channel);
}
}
#else /* LL_TIM_CHANNEL_CH1N */

Expand Down