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Diffstat (limited to 'drivers_nrf/hal/nrf_qdec.h')
| -rw-r--r-- | drivers_nrf/hal/nrf_qdec.h | 504 |
1 files changed, 504 insertions, 0 deletions
diff --git a/drivers_nrf/hal/nrf_qdec.h b/drivers_nrf/hal/nrf_qdec.h new file mode 100644 index 0000000..e6a0fcc --- /dev/null +++ b/drivers_nrf/hal/nrf_qdec.h @@ -0,0 +1,504 @@ +/** + * Copyright (c) 2014 - 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. + * + */ +#ifndef NRF_QDEC_H__ +#define NRF_QDEC_H__ + +#include <stddef.h> +#include "nrf_error.h" +#include "nrf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/*lint ++flb "Enter library region" */ + +/** + * @defgroup nrf_qdec_hal QDEC HAL + * @{ + * @ingroup nrf_qdec + * @brief Hardware access layer for accessing the quadrature decoder (QDEC) peripheral. + */ + +/** + * @enum nrf_qdec_task_t + * @brief QDEC tasks. + */ +typedef enum /*lint -save -e30 -esym(628,__INTADDR__) */ +{ + NRF_QDEC_TASK_START = offsetof(NRF_QDEC_Type, TASKS_START), /**< Starting the quadrature decoder. */ + NRF_QDEC_TASK_STOP = offsetof(NRF_QDEC_Type, TASKS_STOP), /**< Stopping the quadrature decoder. */ + NRF_QDEC_TASK_READCLRACC = offsetof(NRF_QDEC_Type, TASKS_READCLRACC) /**< Reading and clearing ACC and ACCDBL registers. */ +} nrf_qdec_task_t; + +/** + * @enum nrf_qdec_event_t + * @brief QDEC events. + */ +typedef enum +{ + NRF_QDEC_EVENT_SAMPLERDY = offsetof(NRF_QDEC_Type, EVENTS_SAMPLERDY), /**< Event generated for every new sample. */ + NRF_QDEC_EVENT_REPORTRDY = offsetof(NRF_QDEC_Type, EVENTS_REPORTRDY), /**< Event generated for every new report. */ + NRF_QDEC_EVENT_ACCOF = offsetof(NRF_QDEC_Type, EVENTS_ACCOF) /**< Event generated for every accumulator overflow. */ +} nrf_qdec_event_t; /*lint -restore */ + +/** + * @enum nrf_qdec_short_mask_t + * @brief QDEC shortcuts. + */ +typedef enum +{ + NRF_QDEC_SHORT_REPORTRDY_READCLRACC_MASK = QDEC_SHORTS_REPORTRDY_READCLRACC_Msk, /**< Shortcut between REPORTRDY event and READCLRACC task. */ + NRF_QDEC_SHORT_SAMPLERDY_STOP_MASK = QDEC_SHORTS_SAMPLERDY_STOP_Msk /**< Shortcut between SAMPLERDY event and STOP task. */ +} nrf_qdec_short_mask_t; + +/** + * @enum nrf_qdec_int_mask_t + * @brief QDEC interrupts. + */ +typedef enum +{ + NRF_QDEC_INT_SAMPLERDY_MASK = QDEC_INTENSET_SAMPLERDY_Msk, /**< Mask for enabling or disabling an interrupt on SAMPLERDY event. */ + NRF_QDEC_INT_REPORTRDY_MASK = QDEC_INTENSET_REPORTRDY_Msk, /**< Mask for enabling or disabling an interrupt on REPORTRDY event. */ + NRF_QDEC_INT_ACCOF_MASK = QDEC_INTENSET_ACCOF_Msk /**< Mask for enabling or disabling an interrupt on ACCOF event. */ +} nrf_qdec_int_mask_t; + +/** + * @enum nrf_qdec_enable_t + * @brief States of the enable bit. + */ +typedef enum +{ + NRF_QDEC_DISABLE = QDEC_ENABLE_ENABLE_Disabled, /**< Mask for disabling the QDEC periperal. When disabled, the QDEC decoder pins are not active. */ + NRF_QDEC_ENABLE = QDEC_ENABLE_ENABLE_Enabled /**< Mask for enabling the QDEC periperal. When enabled, the QDEC pins are active. */ +} nrf_qdec_enable_t; + + +/** + * @enum nrf_qdec_dbfen_t + * @brief States of the debounce filter enable bit. + */ +typedef enum +{ + NRF_QDEC_DBFEN_DISABLE = QDEC_DBFEN_DBFEN_Disabled, /**< Mask for disabling the debounce filter. */ + NRF_QDEC_DBFEN_ENABLE = QDEC_DBFEN_DBFEN_Enabled /**< Mask for enabling the debounce filter. */ +} nrf_qdec_dbfen_t; + +/** + * @enum nrf_qdec_ledpol_t + * @brief Active LED polarity. + */ +typedef enum +{ + NRF_QDEC_LEPOL_ACTIVE_LOW = QDEC_LEDPOL_LEDPOL_ActiveLow, /**< QDEC LED active on output pin low. */ + NRF_QDEC_LEPOL_ACTIVE_HIGH = QDEC_LEDPOL_LEDPOL_ActiveHigh /**< QDEC LED active on output pin high. */ +} nrf_qdec_ledpol_t; + + +/** + * @enum nrf_qdec_sampleper_t + * @brief Available sampling periods. + */ +typedef enum +{ + NRF_QDEC_SAMPLEPER_128us = QDEC_SAMPLEPER_SAMPLEPER_128us, /**< QDEC sampling period 128 microseconds. */ + NRF_QDEC_SAMPLEPER_256us = QDEC_SAMPLEPER_SAMPLEPER_256us, /**< QDEC sampling period 256 microseconds. */ + NRF_QDEC_SAMPLEPER_512us = QDEC_SAMPLEPER_SAMPLEPER_512us, /**< QDEC sampling period 512 microseconds. */ + NRF_QDEC_SAMPLEPER_1024us = QDEC_SAMPLEPER_SAMPLEPER_1024us, /**< QDEC sampling period 1024 microseconds. */ + NRF_QDEC_SAMPLEPER_2048us = QDEC_SAMPLEPER_SAMPLEPER_2048us, /**< QDEC sampling period 2048 microseconds. */ + NRF_QDEC_SAMPLEPER_4096us = QDEC_SAMPLEPER_SAMPLEPER_4096us, /**< QDEC sampling period 4096 microseconds. */ + NRF_QDEC_SAMPLEPER_8192us = QDEC_SAMPLEPER_SAMPLEPER_8192us, /**< QDEC sampling period 8192 microseconds. */ + NRF_QDEC_SAMPLEPER_16384us = QDEC_SAMPLEPER_SAMPLEPER_16384us /**< QDEC sampling period 16384 microseconds. */ +} nrf_qdec_sampleper_t; + +/** + * @enum nrf_qdec_reportper_t + * @brief Available report periods. + */ +typedef enum +{ + NRF_QDEC_REPORTPER_10 = QDEC_REPORTPER_REPORTPER_10Smpl, /**< QDEC report period 10 samples. */ + NRF_QDEC_REPORTPER_40 = QDEC_REPORTPER_REPORTPER_40Smpl, /**< QDEC report period 40 samples. */ + NRF_QDEC_REPORTPER_80 = QDEC_REPORTPER_REPORTPER_80Smpl, /**< QDEC report period 80 samples. */ + NRF_QDEC_REPORTPER_120 = QDEC_REPORTPER_REPORTPER_120Smpl, /**< QDEC report period 120 samples. */ + NRF_QDEC_REPORTPER_160 = QDEC_REPORTPER_REPORTPER_160Smpl, /**< QDEC report period 160 samples. */ + NRF_QDEC_REPORTPER_200 = QDEC_REPORTPER_REPORTPER_200Smpl, /**< QDEC report period 200 samples. */ + NRF_QDEC_REPORTPER_240 = QDEC_REPORTPER_REPORTPER_240Smpl, /**< QDEC report period 240 samples. */ + NRF_QDEC_REPORTPER_280 = QDEC_REPORTPER_REPORTPER_280Smpl, /**< QDEC report period 280 samples. */ + NRF_QDEC_REPORTPER_DISABLED /**< QDEC reporting disabled. */ +} nrf_qdec_reportper_t; + +/** + * @brief Function for enabling QDEC. + */ +__STATIC_INLINE void nrf_qdec_enable(void) +{ + NRF_QDEC->ENABLE = NRF_QDEC_ENABLE; +} + + +/** + * @brief Function for disabling QDEC. + */ +__STATIC_INLINE void nrf_qdec_disable(void) +{ + NRF_QDEC->ENABLE = NRF_QDEC_DISABLE; +} + + +/** + * @brief Function for returning the enable state of QDEC. + * @return State of the register. + */ +__STATIC_INLINE uint32_t nrf_qdec_enable_get(void) +{ + return NRF_QDEC->ENABLE; +} + + +/** + * @brief Function for enabling QDEC interrupts by mask. + * @param[in] qdec_int_mask Sources of the interrupts to enable. + */ +__STATIC_INLINE void nrf_qdec_int_enable(uint32_t qdec_int_mask) +{ + NRF_QDEC->INTENSET = qdec_int_mask; // writing 0 has no effect +} + + +/** + * @brief Function for disabling QDEC interrupts by mask. + * @param[in] qdec_int_mask Sources of the interrupts to disable. + * + */ +__STATIC_INLINE void nrf_qdec_int_disable(uint32_t qdec_int_mask) +{ + NRF_QDEC->INTENCLR = qdec_int_mask; // writing 0 has no effect +} + + +/** + * @brief Function for getting the enabled interrupts of the QDEC. + */ +__STATIC_INLINE uint32_t nrf_qdec_int_enable_check(nrf_qdec_int_mask_t qdec_int_mask) +{ + return NRF_QDEC->INTENSET & qdec_int_mask; // when read this register will return the value of INTEN. +} + + +/** + * @brief Function for enabling the debouncing filter of the QED. + */ +__STATIC_INLINE void nrf_qdec_dbfen_enable(void) +{ + NRF_QDEC->DBFEN = NRF_QDEC_DBFEN_ENABLE; +} + + +/** + * @brief Function for disabling the debouncing filter of the QED. + */ +__STATIC_INLINE void nrf_qdec_dbfen_disable(void) +{ + NRF_QDEC->DBFEN = NRF_QDEC_DBFEN_DISABLE; +} + + +/** + * @brief Function for getting the state of the QDEC's debouncing filter. + * @retval NRF_QDEC_DBFEN_DISABLE If the debouncing filter is disabled. + * @retval NRF_QDEC_DBFEN_ENABLE If the debouncing filter is enabled. + */ +__STATIC_INLINE uint32_t nrf_qdec_dbfen_get(void) +{ + return NRF_QDEC->DBFEN; +} + + +/** + * @brief Function for assigning QDEC pins. + * @param[in] psela Pin number. + * @param[in] pselb Pin number. + * @param[in] pselled Pin number. + */ +__STATIC_INLINE void nrf_qdec_pio_assign( uint32_t psela, uint32_t pselb, uint32_t pselled) +{ + NRF_QDEC->PSELA = psela; + NRF_QDEC->PSELB = pselb; + NRF_QDEC->PSELLED = pselled; + +} + +/** + * @brief Function for setting a specific QDEC task. + * @param[in] qdec_task QDEC task to be set. + */ +__STATIC_INLINE void nrf_qdec_task_trigger(nrf_qdec_task_t qdec_task) +{ + *( (volatile uint32_t *)( (uint8_t *)NRF_QDEC + qdec_task) ) = 1; +} + + +/** + * @brief Function for retrieving the address of a QDEC task register. + * @param[in] qdec_task QDEC task. + */ +__STATIC_INLINE uint32_t * nrf_qdec_task_address_get(nrf_qdec_task_t qdec_task) +{ + return (uint32_t *)( (uint8_t *)NRF_QDEC + qdec_task); +} + + +/** + * @brief Function for clearing a specific QDEC event. + * @param[in] qdec_event QDEC event to clear. + */ +__STATIC_INLINE void nrf_qdec_event_clear(nrf_qdec_event_t qdec_event) +{ + *( (volatile uint32_t *)( (uint8_t *)NRF_QDEC + qdec_event) ) = 0; +#if __CORTEX_M == 0x04 + volatile uint32_t dummy = *((volatile uint32_t *)((uint8_t *)NRF_QDEC + qdec_event)); + (void)dummy; +#endif +} + + +/** + * @brief Function for retrieving the state of a specific QDEC event. + * @return State of the QDEC event. + */ +__STATIC_INLINE uint32_t nrf_qdec_event_check(nrf_qdec_event_t qdec_event) +{ + return *(volatile uint32_t *)( (uint8_t *)NRF_QDEC + qdec_event); +} + + +/** + * @brief Function for retrieving the address of a specific QDEC event register. + * @param[in] qdec_event QDEC event. + * @return Address of the specified QDEC event. + */ +__STATIC_INLINE uint32_t * nrf_qdec_event_address_get(nrf_qdec_event_t qdec_event) +{ + return (uint32_t *)( (uint8_t *)NRF_QDEC + qdec_event); +} + + +/** + * @brief Function for setting QDEC shortcuts. + * @param[in] qdec_short_mask QDEC shortcut by mask. + */ +__STATIC_INLINE void nrf_qdec_shorts_enable(uint32_t qdec_short_mask) +{ + NRF_QDEC->SHORTS |= qdec_short_mask; +} + + +/** + * @brief Function for clearing shortcuts of the QDEC by mask. + * @param[in] qdec_short_mask QDEC shortcute to be cleared. + */ +__STATIC_INLINE void nrf_qdec_shorts_disable(uint32_t qdec_short_mask) +{ + NRF_QDEC->SHORTS &= ~qdec_short_mask; +} + + +/** + * @brief Function for retrieving the value of QDEC's SAMPLEPER register. + * @return Value of the SAMPLEPER register. + */ +__STATIC_INLINE int32_t nrf_qdec_sampleper_reg_get(void) +{ + return NRF_QDEC->SAMPLEPER; +} + + +/** + * @brief Function for converting the value of QDEC's SAMPLE PERIOD to microseconds. + * @retval sampling period in microseconds. + */ +__STATIC_INLINE uint32_t nrf_qdec_sampleper_to_value(uint32_t sampleper) +{ + return (1 << (7 + sampleper)); +} + +/** + * @brief Function for setting the value of QDEC's SAMPLEPER register. + * @param[in] sample_per Sampling period. + */ +__STATIC_INLINE void nrf_qdec_sampleper_set(nrf_qdec_sampleper_t sample_per) +{ + NRF_QDEC->SAMPLEPER = sample_per; +} + + +/** + * @brief Function for retrieving the value of QDEC's SAMPLE register. + * @return Value of the SAMPLE register. + */ +__STATIC_INLINE int32_t nrf_qdec_sample_get(void) +{ + return NRF_QDEC->SAMPLE; +} + + +/** + * @brief Function for retrieving the value of QDEC's ACC register. + * @return Value of the ACC register. + */ +__STATIC_INLINE int32_t nrf_qdec_acc_get(void) +{ + return NRF_QDEC->ACC; +} + + +/** + * @brief Function for retrieving the value of QDEC's ACCREAD register. + * @return Value of the ACCREAD register. + */ +__STATIC_INLINE int32_t nrf_qdec_accread_get(void) +{ + return NRF_QDEC->ACCREAD; +} + + +/** + * @brief Function for retrieving the value of QDEC's ACCDBL register. + * @return Value of the ACCDBL register. + */ +__STATIC_INLINE uint32_t nrf_qdec_accdbl_get(void) +{ + return NRF_QDEC->ACCDBL; +} + + +/** + * @brief Function for retrieving the value of QDEC's ACCDBLREAD register. + * @return Value of the ACCDBLREAD register. + */ +__STATIC_INLINE uint32_t nrf_qdec_accdblread_get(void) +{ + return NRF_QDEC->ACCDBLREAD; +} + + +/** + * @brief Function for setting how long the LED is switched on before sampling. + * @param[in] time_us Time (in microseconds) how long the LED is switched on before sampling. + */ +__STATIC_INLINE void nrf_qdec_ledpre_set(uint32_t time_us) +{ + NRF_QDEC->LEDPRE = time_us; +} + + +/** + * @brief Function for retrieving how long the LED is switched on before sampling. + * @retval time_us Time (in microseconds) how long the LED is switched on before sampling. + */ +__STATIC_INLINE uint32_t nrf_qdec_ledpre_get(void) +{ + return NRF_QDEC->LEDPRE; +} + + +/** + * @brief Function for setting the report period (in samples). + * @param[in] reportper Number of samples. + */ +__STATIC_INLINE void nrf_qdec_reportper_set(nrf_qdec_reportper_t reportper) +{ + NRF_QDEC->REPORTPER = reportper; +} + + +/** + * @brief Function for retrieving the report period. + * @retval reportper Number of samples as encoded in the register. + */ +__STATIC_INLINE uint32_t nrf_qdec_reportper_reg_get(void) +{ + return NRF_QDEC->REPORTPER; +} + + +/** + * @brief Function for retrieving the value of QDEC's SAMPLEPER register. + * @param [in] reportper Reportper to be converted to amount of samples per report. + + */ +__STATIC_INLINE uint32_t nrf_qdec_reportper_to_value(uint32_t reportper) +{ + return (reportper == NRF_QDEC_REPORTPER_10) ? 10 : reportper * 40; +} + + +/** + * @brief Function for setting the active level for the LED. + * @param[in] pol Active level for the LED. + */ +__STATIC_INLINE void nrf_qdec_ledpol_set(nrf_qdec_ledpol_t pol) +{ + NRF_QDEC->LEDPOL = pol; +} + + +/** + * @brief Function for retrieving the active level for the LED. + * @return Active level for the LED. + */ +__STATIC_INLINE uint32_t nrf_qdec_ledpol_get(void) +{ + return NRF_QDEC->LEDPOL; +} + + +/** + *@} + **/ + +/*lint --flb "Leave library region" */ + +#ifdef __cplusplus +} +#endif + +#endif |