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use simple 8-bit counter for LED PWM

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This commit is contained in:
Joey Castillo
2021-05-20 15:56:15 -07:00
parent 7f2f09d371
commit b358e76047
23 changed files with 1120 additions and 942 deletions
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2
Smol Watch Project/My Project/hal/include/hal_pwm.h
View File

@@ -78,8 +78,6 @@ struct pwm_descriptor {
struct _pwm_device device;
/** PWM callback structure */
struct pwm_callbacks pwm_cb;
/** PWM HPL interface pointer */
struct _pwm_hpl_interface *func;
};
/** \brief Initialize the PWM HAL instance and hardware

88
Smol Watch Project/My Project/hal/include/hpl_pwm.h
View File

@@ -97,6 +97,94 @@ struct _pwm_hpl_interface {
uint32_t (*pwm_get_duty)(const struct _pwm_device *const device);
void (*set_irq_state)(struct _pwm_device *const device, const enum _pwm_callback_type type, const bool disable);
};
/**
* \brief Initialize TC
*
* This function does low level TC configuration.
*
* \param[in] device The pointer to PWM device instance
* \param[in] hw The pointer to hardware instance
*
* \return Initialization status.
*/
int32_t _pwm_init(struct _pwm_device *const device, void *const hw);
/**
* \brief Deinitialize TC
*
* \param[in] device The pointer to PWM device instance
*/
void _pwm_deinit(struct _pwm_device *const device);
/**
* \brief Retrieve offset of the given tc hardware instance
*
* \param[in] device The pointer to PWM device instance
*
* \return The offset of the given tc hardware instance
*/
uint8_t _pwm_get_hardware_offset(const struct _pwm_device *const device);
/**
* \brief Start hardware pwm
*
* \param[in] device The pointer to PWM device instance
*/
void _pwm_enable(struct _pwm_device *const device);
/**
* \brief Stop hardware pwm
*
* \param[in] device The pointer to PWM device instance
*/
void _pwm_disable(struct _pwm_device *const device);
/**
* \brief Set pwm parameter
*
* \param[in] device The pointer to PWM device instance
* \param[in] period Total period of one PWM cycle.
* \param[in] duty_cycle Period of PWM first half during one cycle.
*/
void _pwm_set_param(struct _pwm_device *const device, const pwm_period_t period, const pwm_period_t duty_cycle);
/**
* \brief Check if pwm is working
*
* \param[in] device The pointer to PWM device instance
*
* \return Check status.
* \retval true The given pwm is working
* \retval false The given pwm is not working
*/
bool _pwm_is_enabled(const struct _pwm_device *const device);
/**
* \brief Get pwm waveform period value
*
* \param[in] device The pointer to PWM device instance
*
* \return Period value.
*/
pwm_period_t _pwm_get_period(const struct _pwm_device *const device);
/**
* \brief Get pwm waveform duty cycle value
*
* \param[in] device The pointer to PWM device instance
*
* \return Duty cycle value
*/
uint32_t _pwm_get_duty(const struct _pwm_device *const device);
/**
* \brief Enable/disable PWM interrupt
*
* param[in] device The pointer to PWM device instance
* param[in] type The type of interrupt to disable/enable if applicable
* param[in] disable Enable or disable
*/
void _pwm_set_irq_state(struct _pwm_device *const device, const enum _pwm_callback_type type, const bool disable);
#ifdef __cplusplus
}

29
Smol Watch Project/My Project/hal/src/hal_pwm.c
View File

@@ -48,9 +48,8 @@ static void pwm_detect_fault(struct _pwm_device *device);
*/
int32_t pwm_init(struct pwm_descriptor *const descr, void *const hw, struct _pwm_hpl_interface *const func)
{
ASSERT(descr && hw && func);
descr->func = func;
descr->func->init(&descr->device, hw);
ASSERT(descr && hw);
_pwm_init(&descr->device, hw);
descr->device.callback.pwm_period_cb = pwm_period_expired;
descr->device.callback.pwm_error_cb = pwm_detect_fault;
return ERR_NONE;
@@ -61,8 +60,8 @@ int32_t pwm_init(struct pwm_descriptor *const descr, void *const hw, struct _pwm
*/
int32_t pwm_deinit(struct pwm_descriptor *const descr)
{
ASSERT(descr && descr->func);
descr->func->deinit(&descr->device);
ASSERT(descr);
_pwm_deinit(&descr->device);
return ERR_NONE;
}
@@ -72,11 +71,11 @@ int32_t pwm_deinit(struct pwm_descriptor *const descr)
*/
int32_t pwm_enable(struct pwm_descriptor *const descr)
{
ASSERT(descr && descr->func);
if (descr->func->is_pwm_enabled(&descr->device)) {
ASSERT(descr);
if (_pwm_is_enabled(&descr->device)) {
return ERR_DENIED;
}
descr->func->start_pwm(&descr->device);
_pwm_enable(&descr->device);
return ERR_NONE;
}
@@ -86,11 +85,11 @@ int32_t pwm_enable(struct pwm_descriptor *const descr)
*/
int32_t pwm_disable(struct pwm_descriptor *const descr)
{
ASSERT(descr && descr->func);
if (!descr->func->is_pwm_enabled(&descr->device)) {
ASSERT(descr);
if (!_pwm_is_enabled(&descr->device)) {
return ERR_DENIED;
}
descr->func->stop_pwm(&descr->device);
_pwm_disable(&descr->device);
return ERR_NONE;
}
@@ -112,8 +111,8 @@ int32_t pwm_register_callback(struct pwm_descriptor *const descr, enum pwm_callb
default:
return ERR_INVALID_ARG;
}
ASSERT(descr && descr->func);
descr->func->set_irq_state(&descr->device, (enum _pwm_callback_type)type, NULL != cb);
ASSERT(descr);
_pwm_set_irq_state(&descr->device, (enum _pwm_callback_type)type, NULL != cb);
return ERR_NONE;
}
@@ -122,8 +121,8 @@ int32_t pwm_register_callback(struct pwm_descriptor *const descr, enum pwm_callb
*/
int32_t pwm_set_parameters(struct pwm_descriptor *const descr, const pwm_period_t period, const pwm_period_t duty_cycle)
{
ASSERT(descr && descr->func);
descr->func->set_pwm_param(&descr->device, period, duty_cycle);
ASSERT(descr);
_pwm_set_param(&descr->device, period, duty_cycle);
return ERR_NONE;
}