Amit Gandhi / sensen_copy_2

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targets/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/tc/tc_interrupt.c@149:156823d33999, 2016-10-28 (annotated)

Committer:
<>
Date:
Fri Oct 28 11:17:30 2016 +0100
Revision:
149:156823d33999
Parent:
targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/tc/tc_interrupt.c@15:a81a8d6c1dfe 
This updates the lib to the mbed lib v128



NOTE: This release includes a restructuring of the file and directory locations and thus some

include paths in your code may need updating accordingly.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 15:a81a8d6c1dfe 1 /**
mbed_official 15:a81a8d6c1dfe 2 * \file
mbed_official 15:a81a8d6c1dfe 3 *
mbed_official 15:a81a8d6c1dfe 4 * \brief SAM TC - Timer Counter Callback Driver
mbed_official 15:a81a8d6c1dfe 5 *
mbed_official 15:a81a8d6c1dfe 6 * Copyright (C) 2013-2015 Atmel Corporation. All rights reserved.
mbed_official 15:a81a8d6c1dfe 7 *
mbed_official 15:a81a8d6c1dfe 8 * \asf_license_start
mbed_official 15:a81a8d6c1dfe 9 *
mbed_official 15:a81a8d6c1dfe 10 * \page License
mbed_official 15:a81a8d6c1dfe 11 *
mbed_official 15:a81a8d6c1dfe 12 * Redistribution and use in source and binary forms, with or without
mbed_official 15:a81a8d6c1dfe 13 * modification, are permitted provided that the following conditions are met:
mbed_official 15:a81a8d6c1dfe 14 *
mbed_official 15:a81a8d6c1dfe 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 15:a81a8d6c1dfe 16 * this list of conditions and the following disclaimer.
mbed_official 15:a81a8d6c1dfe 17 *
mbed_official 15:a81a8d6c1dfe 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 15:a81a8d6c1dfe 19 * this list of conditions and the following disclaimer in the documentation
mbed_official 15:a81a8d6c1dfe 20 * and/or other materials provided with the distribution.
mbed_official 15:a81a8d6c1dfe 21 *
mbed_official 15:a81a8d6c1dfe 22 * 3. The name of Atmel may not be used to endorse or promote products derived
mbed_official 15:a81a8d6c1dfe 23 * from this software without specific prior written permission.
mbed_official 15:a81a8d6c1dfe 24 *
mbed_official 15:a81a8d6c1dfe 25 * 4. This software may only be redistributed and used in connection with an
mbed_official 15:a81a8d6c1dfe 26 * Atmel microcontroller product.
mbed_official 15:a81a8d6c1dfe 27 *
mbed_official 15:a81a8d6c1dfe 28 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
mbed_official 15:a81a8d6c1dfe 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
mbed_official 15:a81a8d6c1dfe 30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
mbed_official 15:a81a8d6c1dfe 31 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
mbed_official 15:a81a8d6c1dfe 32 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 15:a81a8d6c1dfe 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
mbed_official 15:a81a8d6c1dfe 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
mbed_official 15:a81a8d6c1dfe 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
mbed_official 15:a81a8d6c1dfe 36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
mbed_official 15:a81a8d6c1dfe 37 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 15:a81a8d6c1dfe 38 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 15:a81a8d6c1dfe 39 *
mbed_official 15:a81a8d6c1dfe 40 * \asf_license_stop
mbed_official 15:a81a8d6c1dfe 41 *
mbed_official 15:a81a8d6c1dfe 42 */
mbed_official 15:a81a8d6c1dfe 43
mbed_official 15:a81a8d6c1dfe 44 /*
mbed_official 15:a81a8d6c1dfe 45 * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
mbed_official 15:a81a8d6c1dfe 46 */
mbed_official 15:a81a8d6c1dfe 47
mbed_official 15:a81a8d6c1dfe 48 #include "tc_interrupt.h"
mbed_official 15:a81a8d6c1dfe 49
mbed_official 15:a81a8d6c1dfe 50 void *_tc_instances[TC_INST_NUM];
mbed_official 15:a81a8d6c1dfe 51
mbed_official 15:a81a8d6c1dfe 52 void _tc_interrupt_handler(uint8_t instance);
mbed_official 15:a81a8d6c1dfe 53
mbed_official 15:a81a8d6c1dfe 54 /**
mbed_official 15:a81a8d6c1dfe 55 * \brief Registers a callback.
mbed_official 15:a81a8d6c1dfe 56 *
mbed_official 15:a81a8d6c1dfe 57 * Registers a callback function which is implemented by the user.
mbed_official 15:a81a8d6c1dfe 58 *
mbed_official 15:a81a8d6c1dfe 59 * \note The callback must be enabled by \ref tc_enable_callback,
mbed_official 15:a81a8d6c1dfe 60 * in order for the interrupt handler to call it when the conditions for the
mbed_official 15:a81a8d6c1dfe 61 * callback type is met.
mbed_official 15:a81a8d6c1dfe 62 *
mbed_official 15:a81a8d6c1dfe 63 * \param[in] module Pointer to TC software instance struct
mbed_official 15:a81a8d6c1dfe 64 * \param[in] callback_func Pointer to callback function
mbed_official 15:a81a8d6c1dfe 65 * \param[in] callback_type Callback type given by an enum
mbed_official 15:a81a8d6c1dfe 66 */
mbed_official 15:a81a8d6c1dfe 67 enum status_code tc_register_callback(
mbed_official 15:a81a8d6c1dfe 68 struct tc_module *const module,
mbed_official 15:a81a8d6c1dfe 69 tc_callback_t callback_func,
mbed_official 15:a81a8d6c1dfe 70 const enum tc_callback callback_type)
mbed_official 15:a81a8d6c1dfe 71 {
mbed_official 15:a81a8d6c1dfe 72 /* Sanity check arguments */
mbed_official 15:a81a8d6c1dfe 73 Assert(module);
mbed_official 15:a81a8d6c1dfe 74 Assert(callback_func);
mbed_official 15:a81a8d6c1dfe 75
mbed_official 15:a81a8d6c1dfe 76 /* Register callback function */
mbed_official 15:a81a8d6c1dfe 77 module->callback[callback_type] = callback_func;
mbed_official 15:a81a8d6c1dfe 78
mbed_official 15:a81a8d6c1dfe 79 /* Set the bit corresponding to the callback_type */
mbed_official 15:a81a8d6c1dfe 80 if (callback_type == TC_CALLBACK_CC_CHANNEL0) {
mbed_official 15:a81a8d6c1dfe 81 module->register_callback_mask |= TC_INTFLAG_MC(1);
mbed_official 15:a81a8d6c1dfe 82 } else if (callback_type == TC_CALLBACK_CC_CHANNEL1) {
mbed_official 15:a81a8d6c1dfe 83 module->register_callback_mask |= TC_INTFLAG_MC(2);
mbed_official 15:a81a8d6c1dfe 84 } else {
mbed_official 15:a81a8d6c1dfe 85 module->register_callback_mask |= (1 << callback_type);
mbed_official 15:a81a8d6c1dfe 86 }
mbed_official 15:a81a8d6c1dfe 87 return STATUS_OK;
mbed_official 15:a81a8d6c1dfe 88 }
mbed_official 15:a81a8d6c1dfe 89
mbed_official 15:a81a8d6c1dfe 90 /**
mbed_official 15:a81a8d6c1dfe 91 * \brief Unregisters a callback.
mbed_official 15:a81a8d6c1dfe 92 *
mbed_official 15:a81a8d6c1dfe 93 * Unregisters a callback function implemented by the user. The callback should be
mbed_official 15:a81a8d6c1dfe 94 * disabled before it is unregistered.
mbed_official 15:a81a8d6c1dfe 95 *
mbed_official 15:a81a8d6c1dfe 96 * \param[in] module Pointer to TC software instance struct
mbed_official 15:a81a8d6c1dfe 97 * \param[in] callback_type Callback type given by an enum
mbed_official 15:a81a8d6c1dfe 98 */
mbed_official 15:a81a8d6c1dfe 99 enum status_code tc_unregister_callback(
mbed_official 15:a81a8d6c1dfe 100 struct tc_module *const module,
mbed_official 15:a81a8d6c1dfe 101 const enum tc_callback callback_type)
mbed_official 15:a81a8d6c1dfe 102 {
mbed_official 15:a81a8d6c1dfe 103 /* Sanity check arguments */
mbed_official 15:a81a8d6c1dfe 104 Assert(module);
mbed_official 15:a81a8d6c1dfe 105
mbed_official 15:a81a8d6c1dfe 106 /* Unregister callback function */
mbed_official 15:a81a8d6c1dfe 107 module->callback[callback_type] = NULL;
mbed_official 15:a81a8d6c1dfe 108
mbed_official 15:a81a8d6c1dfe 109 /* Clear the bit corresponding to the callback_type */
mbed_official 15:a81a8d6c1dfe 110 if (callback_type == TC_CALLBACK_CC_CHANNEL0) {
mbed_official 15:a81a8d6c1dfe 111 module->register_callback_mask &= ~TC_INTFLAG_MC(1);
mbed_official 15:a81a8d6c1dfe 112 } else if (callback_type == TC_CALLBACK_CC_CHANNEL1) {
mbed_official 15:a81a8d6c1dfe 113 module->register_callback_mask &= ~TC_INTFLAG_MC(2);
mbed_official 15:a81a8d6c1dfe 114 } else {
mbed_official 15:a81a8d6c1dfe 115 module->register_callback_mask &= ~(1 << callback_type);
mbed_official 15:a81a8d6c1dfe 116 }
mbed_official 15:a81a8d6c1dfe 117 return STATUS_OK;
mbed_official 15:a81a8d6c1dfe 118 }
mbed_official 15:a81a8d6c1dfe 119
mbed_official 15:a81a8d6c1dfe 120 /**
mbed_official 15:a81a8d6c1dfe 121 * \internal ISR handler for TC
mbed_official 15:a81a8d6c1dfe 122 *
mbed_official 15:a81a8d6c1dfe 123 * Auto-generate a set of interrupt handlers for each TC in the device.
mbed_official 15:a81a8d6c1dfe 124 */
mbed_official 15:a81a8d6c1dfe 125 #define _TC_INTERRUPT_HANDLER(n, m) \
mbed_official 15:a81a8d6c1dfe 126 void TC##n##_Handler(void) \
mbed_official 15:a81a8d6c1dfe 127 { \
mbed_official 15:a81a8d6c1dfe 128 _tc_interrupt_handler(m); \
mbed_official 15:a81a8d6c1dfe 129 }
mbed_official 15:a81a8d6c1dfe 130
mbed_official 15:a81a8d6c1dfe 131 #if (SAML21E) || (SAML21G)
mbed_official 15:a81a8d6c1dfe 132 _TC_INTERRUPT_HANDLER(0,0)
mbed_official 15:a81a8d6c1dfe 133 _TC_INTERRUPT_HANDLER(1,1)
mbed_official 15:a81a8d6c1dfe 134 _TC_INTERRUPT_HANDLER(4,2)
mbed_official 15:a81a8d6c1dfe 135 #else
mbed_official 15:a81a8d6c1dfe 136 MRECURSION(TC_INST_NUM, _TC_INTERRUPT_HANDLER, TC_INST_MAX_ID)
mbed_official 15:a81a8d6c1dfe 137 #endif
mbed_official 15:a81a8d6c1dfe 138
mbed_official 15:a81a8d6c1dfe 139
mbed_official 15:a81a8d6c1dfe 140 /**
mbed_official 15:a81a8d6c1dfe 141 * \internal Interrupt Handler for TC module
mbed_official 15:a81a8d6c1dfe 142 *
mbed_official 15:a81a8d6c1dfe 143 * Handles interrupts as they occur, it will run the callback functions
mbed_official 15:a81a8d6c1dfe 144 * that are registered and enabled.
mbed_official 15:a81a8d6c1dfe 145 *
mbed_official 15:a81a8d6c1dfe 146 * \param[in] instance ID of the TC instance calling the interrupt
mbed_official 15:a81a8d6c1dfe 147 * handler.
mbed_official 15:a81a8d6c1dfe 148 */
mbed_official 15:a81a8d6c1dfe 149 void _tc_interrupt_handler(
mbed_official 15:a81a8d6c1dfe 150 uint8_t instance)
mbed_official 15:a81a8d6c1dfe 151 {
mbed_official 15:a81a8d6c1dfe 152 /* Temporary variable */
mbed_official 15:a81a8d6c1dfe 153 uint8_t interrupt_and_callback_status_mask;
mbed_official 15:a81a8d6c1dfe 154
mbed_official 15:a81a8d6c1dfe 155 /* Get device instance from the look-up table */
mbed_official 15:a81a8d6c1dfe 156 struct tc_module *module
mbed_official 15:a81a8d6c1dfe 157 = (struct tc_module *)_tc_instances[instance];
mbed_official 15:a81a8d6c1dfe 158
mbed_official 15:a81a8d6c1dfe 159 /* Read and mask interrupt flag register */
mbed_official 15:a81a8d6c1dfe 160 interrupt_and_callback_status_mask = module->hw->COUNT8.INTFLAG.reg &
mbed_official 15:a81a8d6c1dfe 161 module->register_callback_mask &
mbed_official 15:a81a8d6c1dfe 162 module->enable_callback_mask;
mbed_official 15:a81a8d6c1dfe 163
mbed_official 15:a81a8d6c1dfe 164 /* Check if an Overflow interrupt has occurred */
mbed_official 15:a81a8d6c1dfe 165 if (interrupt_and_callback_status_mask & TC_INTFLAG_OVF) {
mbed_official 15:a81a8d6c1dfe 166 /* Invoke registered and enabled callback function */
mbed_official 15:a81a8d6c1dfe 167 (module->callback[TC_CALLBACK_OVERFLOW])(module);
mbed_official 15:a81a8d6c1dfe 168 /* Clear interrupt flag */
mbed_official 15:a81a8d6c1dfe 169 module->hw->COUNT8.INTFLAG.reg = TC_INTFLAG_OVF;
mbed_official 15:a81a8d6c1dfe 170 }
mbed_official 15:a81a8d6c1dfe 171
mbed_official 15:a81a8d6c1dfe 172 /* Check if an Error interrupt has occurred */
mbed_official 15:a81a8d6c1dfe 173 if (interrupt_and_callback_status_mask & TC_INTFLAG_ERR) {
mbed_official 15:a81a8d6c1dfe 174 /* Invoke registered and enabled callback function */
mbed_official 15:a81a8d6c1dfe 175 (module->callback[TC_CALLBACK_ERROR])(module);
mbed_official 15:a81a8d6c1dfe 176 /* Clear interrupt flag */
mbed_official 15:a81a8d6c1dfe 177 module->hw->COUNT8.INTFLAG.reg = TC_INTFLAG_ERR;
mbed_official 15:a81a8d6c1dfe 178 }
mbed_official 15:a81a8d6c1dfe 179
mbed_official 15:a81a8d6c1dfe 180 /* Check if an Match/Capture Channel 0 interrupt has occurred */
mbed_official 15:a81a8d6c1dfe 181 if (interrupt_and_callback_status_mask & TC_INTFLAG_MC(1)) {
mbed_official 15:a81a8d6c1dfe 182 /* Invoke registered and enabled callback function */
mbed_official 15:a81a8d6c1dfe 183 (module->callback[TC_CALLBACK_CC_CHANNEL0])(module);
mbed_official 15:a81a8d6c1dfe 184 /* Clear interrupt flag */
mbed_official 15:a81a8d6c1dfe 185 module->hw->COUNT8.INTFLAG.reg = TC_INTFLAG_MC(1);
mbed_official 15:a81a8d6c1dfe 186 }
mbed_official 15:a81a8d6c1dfe 187
mbed_official 15:a81a8d6c1dfe 188 /* Check if an Match/Capture Channel 1 interrupt has occurred */
mbed_official 15:a81a8d6c1dfe 189 if (interrupt_and_callback_status_mask & TC_INTFLAG_MC(2)) {
mbed_official 15:a81a8d6c1dfe 190 /* Invoke registered and enabled callback function */
mbed_official 15:a81a8d6c1dfe 191 (module->callback[TC_CALLBACK_CC_CHANNEL1])(module);
mbed_official 15:a81a8d6c1dfe 192 /* Clear interrupt flag */
mbed_official 15:a81a8d6c1dfe 193 module->hw->COUNT8.INTFLAG.reg = TC_INTFLAG_MC(2);
mbed_official 15:a81a8d6c1dfe 194 }
mbed_official 15:a81a8d6c1dfe 195 }