/**
* \brief Initializes the RTC module with given configurations.
*
* Initializes the module, setting up all given configurations to provide
* the desired functionality of the RTC.
*
* \param[out] module Pointer to the software instance struct
* \param[in] hw Pointer to hardware instance
* \param[in] config Pointer to the configuration structure
*
* \return Status of the initialization procedure.
* \retval STATUS_OK If the initialization was run stressfully
* \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were given
*/
enum status_code rtc_count_init(
struct rtc_module *const module,
Rtc *const hw,
const struct rtc_count_config *const config)
{
/* Sanity check arguments */
Assert(module);
Assert(hw);
Assert(config);
/* Initialize device instance */
module->hw = hw;
/* Turn on the digital interface clock */
system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBA, MCLK_APBAMASK_RTC);
/* Select RTC clock */
OSC32KCTRL->RTCCTRL.reg = RTC_CLOCK_SOURCE;
/* Reset module to hardware defaults. */
rtc_count_reset(module);
/* Save conf_struct internally for continued use. */
module->mode = config->mode;
# if (RTC_INST_NUM == 1)
_rtc_instance[0] = module;
# else
/* Register this instance for callbacks*/
_rtc_instance[_rtc_get_inst_index(hw)] = module;
# endif
/* Set config and return status. */
return _rtc_count_set_config(module, config);
}
/**
* \brief Initializes the RTC module with given configurations.
*
* Initializes the module, setting up all given configurations to provide
* the desired functionality of the RTC.
*
* \param[out] module Pointer to the software instance struct
* \param[in] hw Pointer to hardware instance
* \param[in] config Pointer to the configuration structure
*
* \return Status of the initialization procedure.
* \retval STATUS_OK If the initialization was run stressfully
* \retval STATUS_ERR_INVALID_ARG If invalid argument(s) were given
*/
enum status_code rtc_count_init(
struct rtc_module *const module,
Rtc *const hw,
const struct rtc_count_config *const config)
{
/* Sanity check arguments */
Assert(module);
Assert(hw);
Assert(config);
/* Initialize device instance */
module->hw = hw;
/* Turn on the digital interface clock */
system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBA, PM_APBAMASK_RTC);
/* Set up GCLK */
struct system_gclk_chan_config gclk_chan_conf;
system_gclk_chan_get_config_defaults(&gclk_chan_conf);
gclk_chan_conf.source_generator = GCLK_GENERATOR_2;
system_gclk_chan_set_config(RTC_GCLK_ID, &gclk_chan_conf);
system_gclk_chan_enable(RTC_GCLK_ID);
/* Reset module to hardware defaults. */
rtc_count_reset(module);
/* Save conf_struct internally for continued use. */
module->mode = config->mode;
module->continuously_update = config->continuously_update;
# if (RTC_INST_NUM == 1)
_rtc_instance[0] = module;
# else
/* Register this instance for callbacks*/
_rtc_instance[_rtc_get_inst_index(hw)] = module;
# endif
/* Set config and return status. */
return _rtc_count_set_config(module, config);
}
