Diff: nRF51822/nordic-sdk/components/drivers_nrf/hal/nrf_gpiote.h

Revision:

3:24e365bd1b97

Parent:

2:b61ddbb8528e

--- a/nRF51822/nordic-sdk/components/drivers_nrf/hal/nrf_gpiote.h	Thu Nov 05 02:46:37 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,153 +0,0 @@
-/* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
- *
- * The information contained herein is property of Nordic Semiconductor ASA.
- * Terms and conditions of usage are described in detail in NORDIC
- * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
- *
- * Licensees are granted free, non-transferable use of the information. NO
- * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
- * the file.
- *
- */
-#ifndef NRF_GPIOTE_H__
-#define NRF_GPIOTE_H__
-
-#include "nrf.h"
-
-/**
-* @defgroup nrf_gpiote GPIOTE abstraction
-* @{
-* @ingroup nrf_drivers
-* @brief GPIOTE abstraction for configuration of channels.
-*/
-
-
- /**
- * @enum nrf_gpiote_polarity_t
- * @brief Polarity for GPIOTE channel enumerator.
- */
-typedef enum
-{
-  NRF_GPIOTE_POLARITY_LOTOHI = GPIOTE_CONFIG_POLARITY_LoToHi,       ///<  Low to high
-  NRF_GPIOTE_POLARITY_HITOLO = GPIOTE_CONFIG_POLARITY_HiToLo,       ///<  High to low
-  NRF_GPIOTE_POLARITY_TOGGLE = GPIOTE_CONFIG_POLARITY_Toggle        ///<  Toggle
-} nrf_gpiote_polarity_t;
-
-
- /**
- * @enum nrf_gpiote_outinit_t
- * @brief Initial output value for GPIOTE channel enumerator.
- */
-typedef enum
-{
-  NRF_GPIOTE_INITIAL_VALUE_LOW  = GPIOTE_CONFIG_OUTINIT_Low,       ///<  Low to high
-  NRF_GPIOTE_INITIAL_VALUE_HIGH = GPIOTE_CONFIG_OUTINIT_High       ///<  High to low
-} nrf_gpiote_outinit_t;
-
-
-/**
- * @brief Function for configuring GPIOTE channel as output, setting the properly desired output level.
- *
- *
- * @param channel_number specifies the GPIOTE channel [0:3] to configure as an output channel.
- * @param pin_number specifies the pin number [0:30] to use in the GPIOTE channel.
- * @param polarity specifies the desired polarity in the output GPIOTE channel.
- * @param initial_value specifies the initial value of the GPIOTE channel input after the channel configuration.
- */
-static __INLINE void nrf_gpiote_task_config(uint32_t channel_number, uint32_t pin_number, nrf_gpiote_polarity_t polarity, nrf_gpiote_outinit_t initial_value)
-{
-    /* Check if the output desired is high or low */
-    if (initial_value == NRF_GPIOTE_INITIAL_VALUE_LOW)
-    {
-        /* Workaround for the OUTINIT PAN. When nrf_gpiote_task_config() is called a glitch happens
-        on the GPIO if the GPIO in question is already assigned to GPIOTE and the pin is in the 
-        correct state in GPIOTE but not in the OUT register. */
-        NRF_GPIO->OUTCLR = (1 << pin_number);
-        
-        /* Configure channel to Pin31, not connected to the pin, and configure as a tasks that will set it to proper level */
-        NRF_GPIOTE->CONFIG[channel_number] = (GPIOTE_CONFIG_MODE_Task       << GPIOTE_CONFIG_MODE_Pos)     |
-                                             (31UL                          << GPIOTE_CONFIG_PSEL_Pos)     |
-                                             (GPIOTE_CONFIG_POLARITY_HiToLo << GPIOTE_CONFIG_POLARITY_Pos);                                    
-    } 
-    else 
-    {
-        /* Workaround for the OUTINIT PAN. When nrf_gpiote_task_config() is called a glitch happens
-        on the GPIO if the GPIO in question is already assigned to GPIOTE and the pin is in the 
-        correct state in GPIOTE but not in the OUT register. */
-        NRF_GPIO->OUTSET = (1 << pin_number);
-        
-        /* Configure channel to Pin31, not connected to the pin, and configure as a tasks that will set it to proper level */
-        NRF_GPIOTE->CONFIG[channel_number] = (GPIOTE_CONFIG_MODE_Task       << GPIOTE_CONFIG_MODE_Pos)     |
-                                             (31UL                          << GPIOTE_CONFIG_PSEL_Pos)     |
-                                             (GPIOTE_CONFIG_POLARITY_LoToHi << GPIOTE_CONFIG_POLARITY_Pos);
-    }
-
-    /* Three NOPs are required to make sure configuration is written before setting tasks or getting events */
-    __NOP();
-    __NOP();
-    __NOP(); 
-
-    /* Launch the task to take the GPIOTE channel output to the desired level */
-    NRF_GPIOTE->TASKS_OUT[channel_number] = 1;
-    
-
-    /* Finally configure the channel as the caller expects. If OUTINIT works, the channel is configured properly. 
-       If it does not, the channel output inheritance sets the proper level. */
-    NRF_GPIOTE->CONFIG[channel_number] = (GPIOTE_CONFIG_MODE_Task << GPIOTE_CONFIG_MODE_Pos)     |
-                                         ((uint32_t)pin_number    << GPIOTE_CONFIG_PSEL_Pos)     |
-                                         ((uint32_t)polarity      << GPIOTE_CONFIG_POLARITY_Pos) |
-                                         ((uint32_t)initial_value << GPIOTE_CONFIG_OUTINIT_Pos);
-
-    /* Three NOPs are required to make sure configuration is written before setting tasks or getting events */
-    __NOP();
-    __NOP();
-    __NOP(); 
-}
-
-/**
- * @brief Function for configuring GPIOTE channel as input, automatically clearing an event that appears in some cases under configuration.
- *
- * Note that when configuring the channel as input an event might be triggered. Care of disabling interrupts
- * for that channel is left to the user.
- *
- * @param channel_number specifies the GPIOTE channel [0:3] to configure as an input channel.
- * @param pin_number specifies the pin number [0:30] to use in the GPIOTE channel.
- * @param polarity specifies the desired polarity in the output GPIOTE channel.
- */
-static __INLINE void nrf_gpiote_event_config(uint32_t channel_number, uint32_t pin_number, nrf_gpiote_polarity_t polarity)
-{   
-    /* Configure the channel as the caller expects */
-    NRF_GPIOTE->CONFIG[channel_number] = (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos)     |
-                                         ((uint32_t)pin_number     << GPIOTE_CONFIG_PSEL_Pos)     |
-                                         ((uint32_t)polarity       << GPIOTE_CONFIG_POLARITY_Pos);
-
-    /* Three NOPs are required to make sure configuration is written before setting tasks or getting events */
-    __NOP();
-    __NOP();
-    __NOP();
-    
-    /* Clear the event that appears in some cases */
-    NRF_GPIOTE->EVENTS_IN[channel_number] = 0; 
-}
-
-
-/**
- * @brief Function for unconfiguring GPIOTE channel.
- *
- *
- * Note that when unconfiguring the channel, the pin is configured as GPIO PIN_CNF configuration.
- *
- * @param channel_number specifies the GPIOTE channel [0:3] to unconfigure.
- */
-static __INLINE void nrf_gpiote_unconfig(uint32_t channel_number)
-{   
-    /* Unonfigure the channel as the caller expects */
-    NRF_GPIOTE->CONFIG[channel_number] = (GPIOTE_CONFIG_MODE_Disabled   << GPIOTE_CONFIG_MODE_Pos) |
-                                         (31UL                          << GPIOTE_CONFIG_PSEL_Pos) |
-                                         (GPIOTE_CONFIG_POLARITY_Toggle << GPIOTE_CONFIG_POLARITY_Pos);
-}
-
-
-/** @} */
-
-#endif
\ No newline at end of file