/* | |
* FreeRTOS Kernel V10.3.0 | |
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy of | |
* this software and associated documentation files (the "Software"), to deal in | |
* the Software without restriction, including without limitation the rights to | |
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | |
* the Software, and to permit persons to whom the Software is furnished to do so, | |
* subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in all | |
* copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | |
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | |
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 1 tab == 4 spaces! | |
*/ | |
/* Standard includes. */ | |
#include <stdlib.h> | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
/* Critical nesting should be initialised to a non zero value so interrupts don't | |
accidentally get enabled before the scheduler is started. */ | |
#define portINITIAL_CRITICAL_NESTING (( StackType_t ) 10) | |
/* The PSW value assigned to tasks when they start to run for the first time. */ | |
#define portPSW (( StackType_t ) 0x00000000) | |
/* We require the address of the pxCurrentTCB variable, but don't want to know | |
any details of its type. */ | |
typedef void TCB_t; | |
extern volatile TCB_t * volatile pxCurrentTCB; | |
/* Keeps track of the nesting level of critical sections. */ | |
volatile StackType_t usCriticalNesting = portINITIAL_CRITICAL_NESTING; | |
/*-----------------------------------------------------------*/ | |
/* Sets up the timer to generate the tick interrupt. */ | |
static void prvSetupTimerInterrupt( void ); | |
/*-----------------------------------------------------------*/ | |
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters ) | |
{ | |
*pxTopOfStack = ( StackType_t ) pxCode; /* Task function start address */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) pxCode; /* Task function start address */ | |
pxTopOfStack--; | |
*pxTopOfStack = portPSW; /* Initial PSW value */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x20202020; /* Initial Value of R20 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x21212121; /* Initial Value of R21 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x22222222; /* Initial Value of R22 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x23232323; /* Initial Value of R23 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x24242424; /* Initial Value of R24 */ | |
pxTopOfStack--; | |
#if (__DATA_MODEL__ == 0) || (__DATA_MODEL__ == 1) | |
*pxTopOfStack = ( StackType_t ) 0x25252525; /* Initial Value of R25 */ | |
pxTopOfStack--; | |
#endif /* configDATA_MODE */ | |
*pxTopOfStack = ( StackType_t ) 0x26262626; /* Initial Value of R26 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x27272727; /* Initial Value of R27 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x28282828; /* Initial Value of R28 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x29292929; /* Initial Value of R29 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x30303030; /* Initial Value of R30 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x19191919; /* Initial Value of R19 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x18181818; /* Initial Value of R18 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x17171717; /* Initial Value of R17 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x16161616; /* Initial Value of R16 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x15151515; /* Initial Value of R15 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x14141414; /* Initial Value of R14 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x13131313; /* Initial Value of R13 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x12121212; /* Initial Value of R12 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x11111111; /* Initial Value of R11 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x10101010; /* Initial Value of R10 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x99999999; /* Initial Value of R09 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x88888888; /* Initial Value of R08 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x77777777; /* Initial Value of R07 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x66666666; /* Initial Value of R06 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) 0x55555555; /* Initial Value of R05 */ | |
pxTopOfStack--; | |
#if __DATA_MODEL__ == 0 || __DATA_MODEL__ == 1 | |
*pxTopOfStack = ( StackType_t ) 0x44444444; /* Initial Value of R04 */ | |
pxTopOfStack--; | |
#endif /* configDATA_MODE */ | |
*pxTopOfStack = ( StackType_t ) 0x22222222; /* Initial Value of R02 */ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) pvParameters; /* R1 is expected to hold the function parameter*/ | |
pxTopOfStack--; | |
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING; | |
/* | |
* Return a pointer to the top of the stack we have generated so this can | |
* be stored in the task control block for the task. | |
*/ | |
return pxTopOfStack; | |
} | |
/*-----------------------------------------------------------*/ | |
BaseType_t xPortStartScheduler( void ) | |
{ | |
/* Setup the hardware to generate the tick. Interrupts are disabled when | |
this function is called. */ | |
prvSetupTimerInterrupt(); | |
/* Restore the context of the first task that is going to run. */ | |
vPortStart(); | |
/* Should not get here as the tasks are now running! */ | |
return pdTRUE; | |
} | |
/*-----------------------------------------------------------*/ | |
void vPortEndScheduler( void ) | |
{ | |
/* It is unlikely that the V850ES/Fx3 port will get stopped. If required simply | |
disable the tick interrupt here. */ | |
} | |
/*-----------------------------------------------------------*/ | |
/* | |
* Hardware initialisation to generate the RTOS tick. This uses | |
*/ | |
static void prvSetupTimerInterrupt( void ) | |
{ | |
TM0CE = 0; /* TMM0 operation disable */ | |
TM0EQMK0 = 1; /* INTTM0EQ0 interrupt disable */ | |
TM0EQIF0 = 0; /* clear INTTM0EQ0 interrupt flag */ | |
#ifdef __IAR_V850ES_Fx3__ | |
{ | |
TM0CMP0 = (((configCPU_CLOCK_HZ / configTICK_RATE_HZ) / 2)-1); /* divided by 2 because peripherals only run at CPU_CLOCK/2 */ | |
} | |
#else | |
{ | |
TM0CMP0 = (configCPU_CLOCK_HZ / configTICK_RATE_HZ); | |
} | |
#endif | |
TM0EQIC0 &= 0xF8; | |
TM0CTL0 = 0x00; | |
TM0EQIF0 = 0; /* clear INTTM0EQ0 interrupt flag */ | |
TM0EQMK0 = 0; /* INTTM0EQ0 interrupt enable */ | |
TM0CE = 1; /* TMM0 operation enable */ | |
} | |
/*-----------------------------------------------------------*/ | |