2 * FreeRTOS Kernel V10.0.0
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3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software. If you wish to use our Amazon
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14 * FreeRTOS name, please do so in a fair use way that does not cause confusion.
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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18 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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19 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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23 * http://www.FreeRTOS.org
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24 * http://aws.amazon.com/freertos
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26 * 1 tab == 4 spaces!
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29 /******************************************************************************
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30 * This project provides two demo applications. A simple blinky style project,
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31 * and a more comprehensive test and demo application. The
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32 * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
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33 * select between the two. The simply blinky demo is implemented and described
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34 * in main_blinky.c. The more comprehensive test and demo application is
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35 * implemented and described in main_full.c.
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37 * This file implements the code that is not demo specific, including the
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38 * hardware setup and FreeRTOS hook functions.
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39 *****************************************************************************/
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41 /* Kernel includes. */
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42 #include "FreeRTOS.h"
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47 /* Target includes. */
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49 #include "MEC14xx/mec14xx.h"
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50 #include "MEC14xx/mec14xx_jtvic.h"
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51 #include "MEC14xx/mec14xx_bbled.h"
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52 #include "MEC14xx/mec14xx_girqs.h"
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54 /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
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55 or 0 to run the more comprehensive test and demo application. */
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56 #define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
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58 /*-----------------------------------------------------------*/
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61 * main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
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62 * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
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64 extern void main_blinky( void );
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65 extern void main_full( void );
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68 * Performs any hardware setup necessary.
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70 static void __attribute__((nomips16)) prvSetupHardware( void );
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73 * Add some thread safety to the LED toggle function.
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75 void vToggleLED( uint8_t ucLED );
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77 /*-----------------------------------------------------------*/
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81 /* Perform any hardware initialisation necessary. */
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84 /* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
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86 #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
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96 /* Should never be reached. */
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99 /*-----------------------------------------------------------*/
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101 void vToggleLED( uint8_t ucLED )
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103 taskENTER_CRITICAL();
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105 led_out_toggle( ucLED );
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107 taskEXIT_CRITICAL();
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109 /*-----------------------------------------------------------*/
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111 static void __attribute__((nomips16)) prvSetupHardware( void )
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113 volatile uint32_t ulTemp;
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115 /* Interrupts are automatically re-enabled when the scheduler is started. */
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116 __asm volatile( "di" );
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118 /* Enable M14K Vector Pre-fetch: CP0.IntCtl b[22]=1
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119 IRET (interrupt chaining): b[21]=1
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120 Enable Auto-Prolog: b[14]=1 */
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121 ulTemp = _CP0_GET_INTCTL();
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122 ulTemp |= ( 1ul << 22 ) + ( 1ul << 21 ) + ( 1ul << 14 );
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123 _CP0_SET_INTCTL( ulTemp );
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125 /* Configure 32KHz for Switched Clock Source always ON
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127 b[ 1 ] = EXT_32K_OSC_EN = 1
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128 b[ 2 ] = INT_32K_OSC_EN = 1
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129 b[ 3 ] = INT_32K_VTR_PWR_WELL_EMUL = 0
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130 b[ 4 ] = 32K_SWITCHER_CTRL = 0 */
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131 VBAT_REGS->CLOCK_ENABLE = 0x07;
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136 __asm volatile( "NOP" );
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137 __asm volatile( "NOP" );
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138 __asm volatile( "NOP" );
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139 __asm volatile( "NOP" );
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142 /* Disaggregate GIRQ23 & GIRQ24 for FreeRTOS. Second parameter is a bit-map
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143 for each GIRQ where
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144 0 = Aggregated, 1 = Dis-aggregate
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145 Bit position = GIRQ_Number - 8
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146 Example: GIRQ23 ( 23 - 8 ) = 15
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147 Dis-aggregate GIRQ23 & GIRQ24
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148 The symbols JTVIC_DISAGR_BITMAP is generated in header file mec14xx_girqm.h
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150 Each disaggregated interrupt handler is spaced 8-bytes apart starting at
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151 base address for that GIRQ. */
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152 jtvic_init( dflt_ih_table, ( JTVIC_DISAGR_BITMAP ), ( JTVIC_FLAG_DISAGR_SPACING_8 ) );
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154 /* Initialise the LEDs. */
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155 for( ulTemp = 0; ulTemp < LED_ID_MAX; ulTemp++ )
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157 led_sleep_en( ulTemp, ADISABLE );
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158 led_init( ulTemp );
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159 led_out_high( ulTemp );
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162 /*-----------------------------------------------------------*/
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164 void vApplicationMallocFailedHook( void )
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166 /* vApplicationMallocFailedHook() will only be called if
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167 configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
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168 function that will get called if a call to pvPortMalloc() fails.
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169 pvPortMalloc() is called internally by the kernel whenever a task, queue,
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170 timer or semaphore is created. It is also called by various parts of the
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171 demo application. If heap_1.c or heap_2.c are used, then the size of the
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172 heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
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173 FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
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174 to query the size of free heap space that remains (although it does not
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175 provide information on how the remaining heap might be fragmented). */
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176 taskDISABLE_INTERRUPTS();
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179 /*-----------------------------------------------------------*/
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181 void vApplicationIdleHook( void )
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183 /* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
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184 to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
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185 task. It is essential that code added to this hook function never attempts
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186 to block in any way (for example, call xQueueReceive() with a block time
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187 specified, or call vTaskDelay()). If the application makes use of the
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188 vTaskDelete() API function (as this demo application does) then it is also
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189 important that vApplicationIdleHook() is permitted to return to its calling
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190 function, because it is the responsibility of the idle task to clean up
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191 memory allocated by the kernel to any task that has since been deleted. */
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193 /*-----------------------------------------------------------*/
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195 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
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197 ( void ) pcTaskName;
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200 /* Run time task stack overflow checking is performed if
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201 configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook function is
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202 called if a task stack overflow is detected. Note the system/interrupt
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203 stack is not checked. */
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204 taskDISABLE_INTERRUPTS();
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207 /*-----------------------------------------------------------*/
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209 void vApplicationTickHook( void )
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211 /* This function will be called by each tick interrupt if
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212 configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
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213 added here, but the tick hook is called from an interrupt context, so
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214 code must not attempt to block, and only the interrupt safe FreeRTOS API
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215 functions can be used (those that end in FromISR()). */
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217 /*-----------------------------------------------------------*/
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219 void vAssertCalled( const char * pcFile, unsigned long ulLine )
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221 volatile char *pcFileName;
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222 volatile unsigned long ulLineNumber;
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224 /* Prevent things that are useful to view in the debugger from being
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226 pcFileName = ( char * ) pcFile;
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227 ( void ) pcFileName;
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228 ulLineNumber = ulLine;
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230 /* Set ulLineNumber to 0 in the debugger to break out of this loop and
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231 return to the line that triggered the assert. */
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232 while( ulLineNumber != 0 )
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234 __asm volatile( "NOP" );
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235 __asm volatile( "NOP" );
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236 __asm volatile( "NOP" );
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237 __asm volatile( "NOP" );
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238 __asm volatile( "NOP" );
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