3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
9 * the Software, and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * http://www.FreeRTOS.org
23 * http://aws.amazon.com/freertos
28 /******************************************************************************
29 * This project provides two demo applications. A simple blinky style project,
30 * and a more comprehensive test and demo application. The
31 * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
32 * select between the two. The simply blinky demo is implemented and described
33 * in main_blinky.c. The more comprehensive test and demo application is
34 * implemented and described in main_full.c.
36 * This file implements the code that is not demo specific, including the
37 * hardware setup, standard FreeRTOS hook functions, and the ISR hander called
38 * by the RTOS after interrupt entry (including nesting) has been taken care of.
40 * ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
41 * THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
42 * APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!
44 * http://www.freertos.org/RX231_RTOS_Renesas_GCC_IAR.html
48 /* Scheduler include files. */
53 /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
54 or 0 to run the more comprehensive test and demo application. */
55 #define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
57 /*-----------------------------------------------------------*/
60 * Configure the hardware as necessary to run this demo.
62 static void prvSetupHardware( void );
65 * main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
66 * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
68 #if( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
69 extern void main_blinky( void );
71 extern void main_full( void );
72 #endif /* #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 */
74 /* Prototypes for the standard FreeRTOS callback/hook functions implemented
76 void vApplicationMallocFailedHook( void );
77 void vApplicationIdleHook( void );
78 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
79 void vApplicationTickHook( void );
81 /*-----------------------------------------------------------*/
83 /* See http://www.freertos.org/RX231_RTOS_Renesas_GCC_IAR.html */
86 /* Configure the hardware ready to run the demo. */
89 /* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
91 #if( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
103 /*-----------------------------------------------------------*/
105 static void prvSetupHardware( void )
107 /* Start user code. Do not edit comment generated here */
108 uint16_t usProtectDummy = ( uint16_t ) ( SYSTEM.PRCR.WORD & 0x000FU );
110 /* Disable protect bit */
111 SYSTEM.PRCR.WORD = 0xA50FU;
113 SYSTEM.VBATTCR.BYTE = 0x81U;
115 /* Restore the previous state of the protect register */
116 SYSTEM.PRCR.WORD = ( uint16_t )( 0xA500U | usProtectDummy );
118 /*-----------------------------------------------------------*/
120 void vApplicationMallocFailedHook( void )
122 /* Called if a call to pvPortMalloc() fails because there is insufficient
123 free memory available in the FreeRTOS heap. pvPortMalloc() is called
124 internally by FreeRTOS API functions that create tasks, queues, software
125 timers, and semaphores. The size of the FreeRTOS heap is set by the
126 configTOTAL_HEAP_SIZE configuration constant in FreeRTOSConfig.h. */
128 /* Force an assert. */
129 configASSERT( ( volatile void * ) NULL );
131 /*-----------------------------------------------------------*/
133 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
138 /* Run time stack overflow checking is performed if
139 configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
140 function is called if a stack overflow is detected. */
142 /* Force an assert. */
143 configASSERT( ( volatile void * ) NULL );
145 /*-----------------------------------------------------------*/
147 void vApplicationIdleHook( void )
149 volatile size_t xFreeHeapSpace;
151 /* This is just a trivial example of an idle hook. It is called on each
152 cycle of the idle task. It must *NOT* attempt to block. In this case the
153 idle task just queries the amount of FreeRTOS heap that remains. See the
154 memory management section on the http://www.FreeRTOS.org web site for memory
155 management options. If there is a lot of heap memory free then the
156 configTOTAL_HEAP_SIZE value in FreeRTOSConfig.h can be reduced to free up
158 xFreeHeapSpace = xPortGetFreeHeapSize();
160 /* Remove compiler warning about xFreeHeapSpace being set but never used. */
161 ( void ) xFreeHeapSpace;
163 /*-----------------------------------------------------------*/
165 void vApplicationTickHook( void )
167 #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 0
169 extern void vFullDemoTickHook( void );
175 /*-----------------------------------------------------------*/
177 /* The RX port uses this callback function to configure its tick interrupt.
178 This allows the application to choose the tick interrupt source.
179 ***NOTE***: configTICK_VECTOR must be set in FreeRTOSConfig.h to be correct for
180 whichever vector is used. */
181 void vApplicationSetupTimerInterrupt( void )
183 const uint32_t ulEnableRegisterWrite = 0xA50BUL, ulDisableRegisterWrite = 0xA500UL;
185 /* Disable register write protection. */
186 SYSTEM.PRCR.WORD = ulEnableRegisterWrite;
188 /* Enable compare match timer 0. */
191 /* Interrupt on compare match. */
192 CMT0.CMCR.BIT.CMIE = 1;
194 /* Set the compare match value. */
195 CMT0.CMCOR = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / configTICK_RATE_HZ ) -1 ) / 8 );
197 /* Divide the PCLK by 8. */
198 CMT0.CMCR.BIT.CKS = 0;
200 /* Enable the interrupt... */
201 _IEN( _CMT0_CMI0 ) = 1;
203 /* ...and set its priority to the application defined kernel priority. */
204 _IPR( _CMT0_CMI0 ) = configKERNEL_INTERRUPT_PRIORITY;
206 /* Start the timer. */
207 CMT.CMSTR0.BIT.STR0 = 1;
209 /* Reneable register protection. */
210 SYSTEM.PRCR.WORD = ulDisableRegisterWrite;
212 /*-----------------------------------------------------------*/
216 #include <intrinsics.h>
218 /* Called from the C start up code when compiled with IAR. */
219 #pragma diag_suppress = Pm011
220 int __low_level_init(void)
221 #pragma diag_default = Pm011
223 extern void R_Systeminit( void );
225 __disable_interrupt();
231 #endif /* __ICCRX__ */