/* | |
* 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! | |
*/ | |
/****************************************************************************** | |
* This project provides two demo applications. A simple blinky style project, | |
* and a more comprehensive test and demo application. The | |
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to | |
* select between the two. The simply blinky demo is implemented and described | |
* in main_blinky.c. The more comprehensive test and demo application is | |
* implemented and described in main_full.c. | |
* | |
* This file implements the code that is not demo specific, including the | |
* hardware setup and FreeRTOS hook functions. | |
*****************************************************************************/ | |
/* Kernel includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
#include "queue.h" | |
#include "timers.h" | |
/* Target includes. */ | |
#include "appcfg.h" | |
#include "MEC14xx/mec14xx.h" | |
#include "MEC14xx/mec14xx_jtvic.h" | |
#include "MEC14xx/mec14xx_bbled.h" | |
#include "MEC14xx/mec14xx_girqs.h" | |
/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo, | |
or 0 to run the more comprehensive test and demo application. */ | |
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0 | |
/*-----------------------------------------------------------*/ | |
/* | |
* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1. | |
* main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0. | |
*/ | |
extern void main_blinky( void ); | |
extern void main_full( void ); | |
/* | |
* Performs any hardware setup necessary. | |
*/ | |
static void __attribute__((nomips16)) prvSetupHardware( void ); | |
/* | |
* Add some thread safety to the LED toggle function. | |
*/ | |
void vToggleLED( uint8_t ucLED ); | |
/*-----------------------------------------------------------*/ | |
int main( void ) | |
{ | |
/* Perform any hardware initialisation necessary. */ | |
prvSetupHardware(); | |
/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top | |
of this file. */ | |
#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 | |
{ | |
main_blinky(); | |
} | |
#else | |
{ | |
main_full(); | |
} | |
#endif | |
/* Should never be reached. */ | |
return 0; | |
} | |
/*-----------------------------------------------------------*/ | |
void vToggleLED( uint8_t ucLED ) | |
{ | |
taskENTER_CRITICAL(); | |
{ | |
led_out_toggle( ucLED ); | |
} | |
taskEXIT_CRITICAL(); | |
} | |
/*-----------------------------------------------------------*/ | |
static void __attribute__((nomips16)) prvSetupHardware( void ) | |
{ | |
volatile uint32_t ulTemp; | |
/* Interrupts are automatically re-enabled when the scheduler is started. */ | |
__asm volatile( "di" ); | |
/* Enable M14K Vector Pre-fetch: CP0.IntCtl b[22]=1 | |
IRET (interrupt chaining): b[21]=1 | |
Enable Auto-Prolog: b[14]=1 */ | |
ulTemp = _CP0_GET_INTCTL(); | |
ulTemp |= ( 1ul << 22 ) + ( 1ul << 21 ) + ( 1ul << 14 ); | |
_CP0_SET_INTCTL( ulTemp ); | |
/* Configure 32KHz for Switched Clock Source always ON | |
b[ 0 ] = XOSEL = 1 | |
b[ 1 ] = EXT_32K_OSC_EN = 1 | |
b[ 2 ] = INT_32K_OSC_EN = 1 | |
b[ 3 ] = INT_32K_VTR_PWR_WELL_EMUL = 0 | |
b[ 4 ] = 32K_SWITCHER_CTRL = 0 */ | |
VBAT_REGS->CLOCK_ENABLE = 0x07; | |
ulTemp = 256; | |
while (ulTemp--) | |
{ | |
__asm volatile( "NOP" ); | |
__asm volatile( "NOP" ); | |
__asm volatile( "NOP" ); | |
__asm volatile( "NOP" ); | |
} | |
/* Disaggregate GIRQ23 & GIRQ24 for FreeRTOS. Second parameter is a bit-map | |
for each GIRQ where | |
0 = Aggregated, 1 = Dis-aggregate | |
Bit position = GIRQ_Number - 8 | |
Example: GIRQ23 ( 23 - 8 ) = 15 | |
Dis-aggregate GIRQ23 & GIRQ24 | |
The symbols JTVIC_DISAGR_BITMAP is generated in header file mec14xx_girqm.h | |
Each disaggregated interrupt handler is spaced 8-bytes apart starting at | |
base address for that GIRQ. */ | |
jtvic_init( dflt_ih_table, ( JTVIC_DISAGR_BITMAP ), ( JTVIC_FLAG_DISAGR_SPACING_8 ) ); | |
/* Initialise the LEDs. */ | |
for( ulTemp = 0; ulTemp < LED_ID_MAX; ulTemp++ ) | |
{ | |
led_sleep_en( ulTemp, ADISABLE ); | |
led_init( ulTemp ); | |
led_out_high( ulTemp ); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationMallocFailedHook( void ) | |
{ | |
/* vApplicationMallocFailedHook() will only be called if | |
configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook | |
function that will get called if a call to pvPortMalloc() fails. | |
pvPortMalloc() is called internally by the kernel whenever a task, queue, | |
timer or semaphore is created. It is also called by various parts of the | |
demo application. If heap_1.c or heap_2.c are used, then the size of the | |
heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in | |
FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used | |
to query the size of free heap space that remains (although it does not | |
provide information on how the remaining heap might be fragmented). */ | |
taskDISABLE_INTERRUPTS(); | |
for( ;; ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationIdleHook( void ) | |
{ | |
/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set | |
to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle | |
task. It is essential that code added to this hook function never attempts | |
to block in any way (for example, call xQueueReceive() with a block time | |
specified, or call vTaskDelay()). If the application makes use of the | |
vTaskDelete() API function (as this demo application does) then it is also | |
important that vApplicationIdleHook() is permitted to return to its calling | |
function, because it is the responsibility of the idle task to clean up | |
memory allocated by the kernel to any task that has since been deleted. */ | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName ) | |
{ | |
( void ) pcTaskName; | |
( void ) pxTask; | |
/* Run time task stack overflow checking is performed if | |
configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook function is | |
called if a task stack overflow is detected. Note the system/interrupt | |
stack is not checked. */ | |
taskDISABLE_INTERRUPTS(); | |
for( ;; ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationTickHook( void ) | |
{ | |
/* This function will be called by each tick interrupt if | |
configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be | |
added here, but the tick hook is called from an interrupt context, so | |
code must not attempt to block, and only the interrupt safe FreeRTOS API | |
functions can be used (those that end in FromISR()). */ | |
} | |
/*-----------------------------------------------------------*/ | |
void vAssertCalled( const char * pcFile, unsigned long ulLine ) | |
{ | |
volatile char *pcFileName; | |
volatile unsigned long ulLineNumber; | |
/* Prevent things that are useful to view in the debugger from being | |
optimised away. */ | |
pcFileName = ( char * ) pcFile; | |
( void ) pcFileName; | |
ulLineNumber = ulLine; | |
/* Set ulLineNumber to 0 in the debugger to break out of this loop and | |
return to the line that triggered the assert. */ | |
while( ulLineNumber != 0 ) | |
{ | |
__asm volatile( "NOP" ); | |
__asm volatile( "NOP" ); | |
__asm volatile( "NOP" ); | |
__asm volatile( "NOP" ); | |
__asm volatile( "NOP" ); | |
} | |
} | |