2 * FreeRTOS Kernel V10.5.1
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3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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4 * Copyright (c) 2021 Raspberry Pi (Trading) Ltd.
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6 * SPDX-License-Identifier: MIT AND BSD-3-Clause
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8 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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9 * this software and associated documentation files (the "Software"), to deal in
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10 * the Software without restriction, including without limitation the rights to
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11 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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12 * the Software, and to permit persons to whom the Software is furnished to do so,
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13 * subject to the following conditions:
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15 * The above copyright notice and this permission notice shall be included in all
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16 * copies or substantial portions of the Software.
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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20 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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21 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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22 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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25 * https://www.FreeRTOS.org
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26 * https://github.com/FreeRTOS
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38 /*-----------------------------------------------------------
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39 * Port specific definitions.
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41 * The settings in this file configure FreeRTOS correctly for the
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42 * given hardware and compiler.
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44 * These settings should not be altered.
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45 *-----------------------------------------------------------
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48 /* Type definitions. */
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49 #define portCHAR char
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50 #define portFLOAT float
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51 #define portDOUBLE double
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52 #define portLONG long
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53 #define portSHORT short
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54 #define portSTACK_TYPE uint32_t
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55 #define portBASE_TYPE long
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57 typedef portSTACK_TYPE StackType_t;
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58 typedef int32_t BaseType_t;
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59 typedef uint32_t UBaseType_t;
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61 #if ( configUSE_16_BIT_TICKS == 1 )
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62 typedef uint16_t TickType_t;
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63 #define portMAX_DELAY ( TickType_t ) 0xffff
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65 typedef uint32_t TickType_t;
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66 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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68 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
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69 * not need to be guarded with a critical section. */
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70 #define portTICK_TYPE_IS_ATOMIC 1
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72 /*-----------------------------------------------------------*/
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74 /* Architecture specifics. */
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75 #define portSTACK_GROWTH ( -1 )
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76 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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77 #define portBYTE_ALIGNMENT 8
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78 #define portDONT_DISCARD __attribute__( ( used ) )
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79 /* We have to use PICO_DIVIDER_DISABLE_INTERRUPTS as the source of truth rathern than our config,
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80 * as our FreeRTOSConfig.h header cannot be included by ASM code - which is what this affects in the SDK */
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81 #define portUSE_DIVIDER_SAVE_RESTORE !PICO_DIVIDER_DISABLE_INTERRUPTS
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82 #if portUSE_DIVIDER_SAVE_RESTORE
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83 #define portSTACK_LIMIT_PADDING 4
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86 /*-----------------------------------------------------------*/
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89 /* Scheduler utilities. */
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90 extern void vPortYield( void );
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91 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
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92 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
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93 #define portYIELD() vPortYield()
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94 #define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT
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95 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
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97 /*-----------------------------------------------------------*/
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99 /* Exception handlers */
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100 #if (configUSE_DYNAMIC_EXCEPTION_HANDLERS == 0)
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101 /* We only need to override the SDK's weak functions if we want to replace them at compile time */
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102 #define vPortSVCHandler isr_svcall
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103 #define xPortPendSVHandler isr_pendsv
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104 #define xPortSysTickHandler isr_systick
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107 #define portCHECK_IF_IN_ISR() ({ \
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109 __asm volatile ("mrs %0, IPSR" : "=r" (ulIPSR)::); \
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110 ((uint8_t)ulIPSR)>0;})
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112 /*-----------------------------------------------------------*/
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114 /* Critical section management. */
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115 extern uint32_t ulSetInterruptMaskFromISR( void ) __attribute__( ( naked ) );
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116 extern void vClearInterruptMaskFromISR( uint32_t ulMask ) __attribute__( ( naked ) );
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117 #define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMaskFromISR()
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118 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vClearInterruptMaskFromISR( x )
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120 #define portDISABLE_INTERRUPTS() __asm volatile ( " cpsid i " ::: "memory" )
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122 extern void vPortEnableInterrupts();
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123 #define portENABLE_INTERRUPTS() vPortEnableInterrupts()
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125 extern void vPortEnterCritical( void );
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126 extern void vPortExitCritical( void );
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127 #define portENTER_CRITICAL() vPortEnterCritical()
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128 #define portEXIT_CRITICAL() vPortExitCritical()
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130 /*-----------------------------------------------------------*/
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132 /* Tickless idle/low power functionality. */
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133 #ifndef portSUPPRESS_TICKS_AND_SLEEP
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134 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
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135 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
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137 /*-----------------------------------------------------------*/
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139 /* Task function macros as described on the FreeRTOS.org WEB site. */
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140 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
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141 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
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145 #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
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151 #endif /* PORTMACRO_H */
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