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/**
* Copyright (c) 2015 - 2017, Nordic Semiconductor ASA
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "sdk_common.h"
#if NRF_MODULE_ENABLED(LPCOMP)
#include "nrf_drv_lpcomp.h"
#include "nrf_assert.h"
#include "nrf_error.h"
#include "nrf_soc.h"
#include "nrf_drv_common.h"
#include "app_util_platform.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#define NRF_LOG_MODULE_NAME "LPCOMP"
#if LPCOMP_CONFIG_LOG_ENABLED
#define NRF_LOG_LEVEL LPCOMP_CONFIG_LOG_LEVEL
#define NRF_LOG_INFO_COLOR LPCOMP_CONFIG_INFO_COLOR
#define NRF_LOG_DEBUG_COLOR LPCOMP_CONFIG_DEBUG_COLOR
#define EVT_TO_STR(event) (event == NRF_LPCOMP_EVENT_READY ? "NRF_LPCOMP_EVENT_READY" : \
(event == NRF_LPCOMP_EVENT_DOWN ? "NRF_LPCOMP_EVENT_DOWN" : \
(event == NRF_LPCOMP_EVENT_UP ? "NRF_LPCOMP_EVENT_UP" : \
(event == NRF_LPCOMP_EVENT_CROSS ? "NRF_LPCOMP_EVENT_CROSS" : "UNKNOWN EVENT"))))
#else //LPCOMP_CONFIG_LOG_ENABLED
#define EVT_TO_STR(event) ""
#define NRF_LOG_LEVEL 0
#endif //LPCOMP_CONFIG_LOG_ENABLED
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
static lpcomp_events_handler_t m_lpcomp_events_handler = NULL;
static nrf_drv_state_t m_state = NRF_DRV_STATE_UNINITIALIZED;
#if NRF_MODULE_ENABLED(PERIPHERAL_RESOURCE_SHARING)
#define IRQ_HANDLER_NAME irq_handler_for_lpcomp
#define IRQ_HANDLER static void IRQ_HANDLER_NAME(void)
IRQ_HANDLER;
#else
#define IRQ_HANDLER void LPCOMP_IRQHandler(void)
#endif // NRF_MODULE_ENABLED(PERIPHERAL_RESOURCE_SHARING)
static void lpcomp_execute_handler(nrf_lpcomp_event_t event, uint32_t event_mask)
{
if ( nrf_lpcomp_event_check(event) && nrf_lpcomp_int_enable_check(event_mask) )
{
nrf_lpcomp_event_clear(event);
NRF_LOG_DEBUG("Event: %s.\r\n", (uint32_t)EVT_TO_STR(event));
m_lpcomp_events_handler(event);
}
}
IRQ_HANDLER
{
lpcomp_execute_handler(NRF_LPCOMP_EVENT_READY, LPCOMP_INTENSET_READY_Msk);
lpcomp_execute_handler(NRF_LPCOMP_EVENT_DOWN, LPCOMP_INTENSET_DOWN_Msk);
lpcomp_execute_handler(NRF_LPCOMP_EVENT_UP, LPCOMP_INTENSET_UP_Msk);
lpcomp_execute_handler(NRF_LPCOMP_EVENT_CROSS, LPCOMP_INTENSET_CROSS_Msk);
}
ret_code_t nrf_drv_lpcomp_init(const nrf_drv_lpcomp_config_t * p_config,
lpcomp_events_handler_t events_handler)
{
ASSERT(p_config);
ret_code_t err_code;
if (m_state != NRF_DRV_STATE_UNINITIALIZED)
{ // LPCOMP driver is already initialized
err_code = NRF_ERROR_INVALID_STATE;
NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
return err_code;
}
#if NRF_MODULE_ENABLED(PERIPHERAL_RESOURCE_SHARING)
if (nrf_drv_common_per_res_acquire(NRF_LPCOMP, IRQ_HANDLER_NAME) != NRF_SUCCESS)
{
err_code = NRF_ERROR_BUSY;
NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
return err_code;
}
#endif
nrf_lpcomp_configure(&(p_config->hal) );
if (events_handler)
{
m_lpcomp_events_handler = events_handler;
}
else
{
err_code = NRF_ERROR_INVALID_PARAM;
NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
return err_code;
}
nrf_lpcomp_input_select(p_config->input);
switch (p_config->hal.detection)
{
case NRF_LPCOMP_DETECT_UP:
nrf_lpcomp_int_enable(LPCOMP_INTENSET_UP_Msk);
break;
case NRF_LPCOMP_DETECT_DOWN:
nrf_lpcomp_int_enable(LPCOMP_INTENSET_DOWN_Msk);
break;
case NRF_LPCOMP_DETECT_CROSS:
nrf_lpcomp_int_enable(LPCOMP_INTENSET_CROSS_Msk);
break;
default:
break;
}
nrf_lpcomp_shorts_enable(NRF_LPCOMP_SHORT_READY_SAMPLE_MASK);
nrf_drv_common_irq_enable(LPCOMP_IRQn, p_config->interrupt_priority);
m_state = NRF_DRV_STATE_INITIALIZED;
err_code = NRF_SUCCESS;
NRF_LOG_INFO("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
return err_code;
}
void nrf_drv_lpcomp_uninit(void)
{
ASSERT(m_state != NRF_DRV_STATE_UNINITIALIZED);
nrf_drv_common_irq_disable(LPCOMP_IRQn);
nrf_drv_lpcomp_disable();
#if NRF_MODULE_ENABLED(PERIPHERAL_RESOURCE_SHARING)
nrf_drv_common_per_res_release(NRF_LPCOMP);
#endif
m_state = NRF_DRV_STATE_UNINITIALIZED;
m_lpcomp_events_handler = NULL;
NRF_LOG_INFO("Uninitialized.\r\n");
}
void nrf_drv_lpcomp_enable(void)
{
ASSERT(m_state == NRF_DRV_STATE_INITIALIZED);
nrf_lpcomp_enable();
nrf_lpcomp_task_trigger(NRF_LPCOMP_TASK_START);
m_state = NRF_DRV_STATE_POWERED_ON;
NRF_LOG_INFO("Enabled.\r\n");
}
void nrf_drv_lpcomp_disable(void)
{
ASSERT(m_state == NRF_DRV_STATE_POWERED_ON);
nrf_lpcomp_disable();
nrf_lpcomp_task_trigger(NRF_LPCOMP_TASK_STOP);
m_state = NRF_DRV_STATE_INITIALIZED;
NRF_LOG_INFO("Disabled.\r\n");
}
void nrf_drv_lpcomp_event_handler_register(lpcomp_events_handler_t lpcomp_events_handler)
{
m_lpcomp_events_handler = lpcomp_events_handler;
}
#endif //NRF_MODULE_ENABLED(LPCOMP)
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