| /* | |
| FreeRTOS V9.0.0rc2 - Copyright (C) 2016 Real Time Engineers Ltd. | |
| All rights reserved | |
| VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
| This file is part of the FreeRTOS distribution. | |
| FreeRTOS is free software; you can redistribute it and/or modify it under | |
| the terms of the GNU General Public License (version 2) as published by the | |
| Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception. | |
| *************************************************************************** | |
| >>! NOTE: The modification to the GPL is included to allow you to !<< | |
| >>! distribute a combined work that includes FreeRTOS without being !<< | |
| >>! obliged to provide the source code for proprietary components !<< | |
| >>! outside of the FreeRTOS kernel. !<< | |
| *************************************************************************** | |
| FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY | |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| FOR A PARTICULAR PURPOSE. Full license text is available on the following | |
| link: http://www.freertos.org/a00114.html | |
| *************************************************************************** | |
| * * | |
| * FreeRTOS provides completely free yet professionally developed, * | |
| * robust, strictly quality controlled, supported, and cross * | |
| * platform software that is more than just the market leader, it * | |
| * is the industry's de facto standard. * | |
| * * | |
| * Help yourself get started quickly while simultaneously helping * | |
| * to support the FreeRTOS project by purchasing a FreeRTOS * | |
| * tutorial book, reference manual, or both: * | |
| * http://www.FreeRTOS.org/Documentation * | |
| * * | |
| *************************************************************************** | |
| http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading | |
| the FAQ page "My application does not run, what could be wrong?". Have you | |
| defined configASSERT()? | |
| http://www.FreeRTOS.org/support - In return for receiving this top quality | |
| embedded software for free we request you assist our global community by | |
| participating in the support forum. | |
| http://www.FreeRTOS.org/training - Investing in training allows your team to | |
| be as productive as possible as early as possible. Now you can receive | |
| FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers | |
| Ltd, and the world's leading authority on the world's leading RTOS. | |
| http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
| including FreeRTOS+Trace - an indispensable productivity tool, a DOS | |
| compatible FAT file system, and our tiny thread aware UDP/IP stack. | |
| http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate. | |
| Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS. | |
| http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High | |
| Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS | |
| licenses offer ticketed support, indemnification and commercial middleware. | |
| http://www.SafeRTOS.com - High Integrity Systems also provide a safety | |
| engineered and independently SIL3 certified version for use in safety and | |
| mission critical applications that require provable dependability. | |
| 1 tab == 4 spaces! | |
| */ | |
| #ifndef PORTMACRO_H | |
| #define PORTMACRO_H | |
| /*----------------------------------------------------------- | |
| * Port specific definitions. | |
| * | |
| * The settings in this file configure FreeRTOS correctly for the | |
| * given hardware and compiler. | |
| * | |
| * These settings should not be altered. | |
| *----------------------------------------------------------- | |
| */ | |
| /* Type definitions. */ | |
| #define portCHAR char | |
| #define portFLOAT float | |
| #define portDOUBLE double | |
| #define portLONG long | |
| #define portSHORT short | |
| #define portSTACK_TYPE uint8_t | |
| #define portBASE_TYPE char | |
| typedef portSTACK_TYPE StackType_t; | |
| typedef signed char BaseType_t; | |
| typedef unsigned char UBaseType_t; | |
| #if( configUSE_16_BIT_TICKS == 1 ) | |
| typedef uint16_t TickType_t; | |
| #define portMAX_DELAY ( TickType_t ) 0xffff | |
| #else | |
| typedef uint32_t TickType_t; | |
| #define portMAX_DELAY ( TickType_t ) 0xffffffffUL | |
| #endif | |
| /*-----------------------------------------------------------*/ | |
| /* Hardware specifics. */ | |
| #define portBYTE_ALIGNMENT 1 | |
| #define portSTACK_GROWTH ( -1 ) | |
| #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) | |
| #define portYIELD() __asm( "swi" ); | |
| #define portNOP() __asm( "nop" ); | |
| /*-----------------------------------------------------------*/ | |
| /* Critical section handling. */ | |
| #define portENABLE_INTERRUPTS() __asm( "cli" ) | |
| #define portDISABLE_INTERRUPTS() __asm( "sei" ) | |
| /* | |
| * Disable interrupts before incrementing the count of critical section nesting. | |
| * The nesting count is maintained so we know when interrupts should be | |
| * re-enabled. Once interrupts are disabled the nesting count can be accessed | |
| * directly. Each task maintains its own nesting count. | |
| */ | |
| #define portENTER_CRITICAL() \ | |
| { \ | |
| extern volatile UBaseType_t uxCriticalNesting; \ | |
| \ | |
| portDISABLE_INTERRUPTS(); \ | |
| uxCriticalNesting++; \ | |
| } | |
| /* | |
| * Interrupts are disabled so we can access the nesting count directly. If the | |
| * nesting is found to be 0 (no nesting) then we are leaving the critical | |
| * section and interrupts can be re-enabled. | |
| */ | |
| #define portEXIT_CRITICAL() \ | |
| { \ | |
| extern volatile UBaseType_t uxCriticalNesting; \ | |
| \ | |
| uxCriticalNesting--; \ | |
| if( uxCriticalNesting == 0 ) \ | |
| { \ | |
| portENABLE_INTERRUPTS(); \ | |
| } \ | |
| } | |
| /*-----------------------------------------------------------*/ | |
| /* Task utilities. */ | |
| /* | |
| * These macros are very simple as the processor automatically saves and | |
| * restores its registers as interrupts are entered and exited. In | |
| * addition to the (automatically stacked) registers we also stack the | |
| * critical nesting count. Each task maintains its own critical nesting | |
| * count as it is legitimate for a task to yield from within a critical | |
| * section. If the banked memory model is being used then the PPAGE | |
| * register is also stored as part of the tasks context. | |
| */ | |
| #ifdef BANKED_MODEL | |
| /* | |
| * Load the stack pointer for the task, then pull the critical nesting | |
| * count and PPAGE register from the stack. The remains of the | |
| * context are restored by the RTI instruction. | |
| */ | |
| #define portRESTORE_CONTEXT() \ | |
| { \ | |
| extern volatile void * pxCurrentTCB; \ | |
| extern volatile UBaseType_t uxCriticalNesting; \ | |
| \ | |
| __asm( "ldx pxCurrentTCB" ); \ | |
| __asm( "lds 0, x" ); \ | |
| __asm( "pula" ); \ | |
| __asm( "staa uxCriticalNesting" ); \ | |
| __asm( "pula" ); \ | |
| __asm( "staa 0x30" ); /* 0x30 = PPAGE */ \ | |
| } | |
| /* | |
| * By the time this macro is called the processor has already stacked the | |
| * registers. Simply stack the nesting count and PPAGE value, then save | |
| * the task stack pointer. | |
| */ | |
| #define portSAVE_CONTEXT() \ | |
| { \ | |
| extern volatile void * pxCurrentTCB; \ | |
| extern volatile UBaseType_t uxCriticalNesting; \ | |
| \ | |
| __asm( "ldaa 0x30" ); /* 0x30 = PPAGE */ \ | |
| __asm( "psha" ); \ | |
| __asm( "ldaa uxCriticalNesting" ); \ | |
| __asm( "psha" ); \ | |
| __asm( "ldx pxCurrentTCB" ); \ | |
| __asm( "sts 0, x" ); \ | |
| } | |
| #else | |
| /* | |
| * These macros are as per the BANKED versions above, but without saving | |
| * and restoring the PPAGE register. | |
| */ | |
| #define portRESTORE_CONTEXT() \ | |
| { \ | |
| extern volatile void * pxCurrentTCB; \ | |
| extern volatile UBaseType_t uxCriticalNesting; \ | |
| \ | |
| __asm( "ldx pxCurrentTCB" ); \ | |
| __asm( "lds 0, x" ); \ | |
| __asm( "pula" ); \ | |
| __asm( "staa uxCriticalNesting" ); \ | |
| } | |
| #define portSAVE_CONTEXT() \ | |
| { \ | |
| extern volatile void * pxCurrentTCB; \ | |
| extern volatile UBaseType_t uxCriticalNesting; \ | |
| \ | |
| __asm( "ldaa uxCriticalNesting" ); \ | |
| __asm( "psha" ); \ | |
| __asm( "ldx pxCurrentTCB" ); \ | |
| __asm( "sts 0, x" ); \ | |
| } | |
| #endif | |
| /* | |
| * Utility macro to call macros above in correct order in order to perform a | |
| * task switch from within a standard ISR. This macro can only be used if | |
| * the ISR does not use any local (stack) variables. If the ISR uses stack | |
| * variables portYIELD() should be used in it's place. | |
| */ | |
| #define portTASK_SWITCH_FROM_ISR() \ | |
| portSAVE_CONTEXT(); \ | |
| vTaskSwitchContext(); \ | |
| portRESTORE_CONTEXT(); | |
| /* Task function macros as described on the FreeRTOS.org WEB site. */ | |
| #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
| #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
| #endif /* PORTMACRO_H */ | |