2 * FreeRTOS Kernel V10.3.0
\r
3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
\r
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
\r
6 * this software and associated documentation files (the "Software"), to deal in
\r
7 * the Software without restriction, including without limitation the rights to
\r
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
\r
9 * the Software, and to permit persons to whom the Software is furnished to do so,
\r
10 * subject to the following conditions:
\r
12 * The above copyright notice and this permission notice shall be included in all
\r
13 * copies or substantial portions of the Software.
\r
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
\r
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
\r
17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
\r
18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
\r
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
\r
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\r
22 * http://www.FreeRTOS.org
\r
23 * http://aws.amazon.com/freertos
\r
25 * 1 tab == 4 spaces!
\r
29 * This file contains the non-portable and therefore RX62N specific parts of
\r
30 * the IntQueue standard demo task - namely the configuration of the timers
\r
31 * that generate the interrupts and the interrupt entry points.
\r
34 /* Scheduler includes. */
\r
35 #include "FreeRTOS.h"
\r
38 /* Demo includes. */
\r
39 #include "IntQueueTimer.h"
\r
40 #include "IntQueue.h"
\r
42 /* Hardware specifics. */
\r
43 #include "iodefine.h"
\r
45 #define tmrTIMER_0_1_FREQUENCY ( 2000UL )
\r
46 #define tmrTIMER_2_3_FREQUENCY ( 2001UL )
\r
48 void vInitialiseTimerForIntQueueTest( void )
\r
50 /* Ensure interrupts do not start until full configuration is complete. */
\r
51 portENTER_CRITICAL();
\r
53 /* Cascade two 8bit timer channels to generate the interrupts.
\r
54 8bit timer unit 1 (TMR0 and TMR1) and 8bit timer unit 2 (TMR2 and TMR3 are
\r
55 utilised for this test. */
\r
57 /* Enable the timers. */
\r
58 SYSTEM.MSTPCRA.BIT.MSTPA5 = 0;
\r
59 SYSTEM.MSTPCRA.BIT.MSTPA4 = 0;
\r
61 /* Enable compare match A interrupt request. */
\r
62 TMR0.TCR.BIT.CMIEA = 1;
\r
63 TMR2.TCR.BIT.CMIEA = 1;
\r
65 /* Clear the timer on compare match A. */
\r
66 TMR0.TCR.BIT.CCLR = 1;
\r
67 TMR2.TCR.BIT.CCLR = 1;
\r
69 /* Set the compare match value. */
\r
70 TMR01.TCORA = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / tmrTIMER_0_1_FREQUENCY ) -1 ) / 8 );
\r
71 TMR23.TCORA = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / tmrTIMER_0_1_FREQUENCY ) -1 ) / 8 );
\r
73 /* 16 bit operation ( count from timer 1,2 ). */
\r
74 TMR0.TCCR.BIT.CSS = 3;
\r
75 TMR2.TCCR.BIT.CSS = 3;
\r
77 /* Use PCLK as the input. */
\r
78 TMR1.TCCR.BIT.CSS = 1;
\r
79 TMR3.TCCR.BIT.CSS = 1;
\r
81 /* Divide PCLK by 8. */
\r
82 TMR1.TCCR.BIT.CKS = 2;
\r
83 TMR3.TCCR.BIT.CKS = 2;
\r
85 /* Enable TMR 0, 2 interrupts. */
\r
86 IEN( TMR0, CMIA0 ) = 1;
\r
87 IEN( TMR2, CMIA2 ) = 1;
\r
89 /* Set the timer interrupts to be above the kernel. The interrupts are
\r
90 assigned different priorities so they nest with each other. */
\r
91 IPR( TMR0, CMIA0 ) = configMAX_SYSCALL_INTERRUPT_PRIORITY - 1;
\r
92 IPR( TMR2, CMIA2 ) = ( configMAX_SYSCALL_INTERRUPT_PRIORITY - 2 );
\r
94 portEXIT_CRITICAL();
\r
96 /* Ensure the interrupts are clear as they are edge detected. */
\r
97 IR( TMR0, CMIA0 ) = 0;
\r
98 IR( TMR2, CMIA2 ) = 0;
\r
100 /*-----------------------------------------------------------*/
\r
102 #pragma interrupt ( vT0_1InterruptHandler( vect = VECT_TMR0_CMIA0, enable ) )
\r
103 void vT0_1InterruptHandler( void )
\r
105 portYIELD_FROM_ISR( xFirstTimerHandler() );
\r
107 /*-----------------------------------------------------------*/
\r
109 #pragma interrupt ( vT2_3InterruptHandler( vect = VECT_TMR2_CMIA2, enable ) )
\r
110 void vT2_3InterruptHandler( void )
\r
112 portYIELD_FROM_ISR( xSecondTimerHandler() );
\r