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40 the FAQ page "My application does not run, what could be wrong?". Have you
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71 * This file contains the non-portable and therefore RX64M specific parts of
72 * the IntQueue standard demo task - namely the configuration of the timers
73 * that generate the interrupts and the interrupt entry points.
76 /* Scheduler includes. */
81 #include "IntQueueTimer.h"
84 /* Hardware specifics. */
86 #include "rskrx64mdef.h"
88 #define IPR_PERIB_INTB128 128
89 #define IPR_PERIB_INTB129 129
90 #define IER_PERIB_INTB128 0x10
91 #define IER_PERIB_INTB129 0x10
92 #define IEN_PERIB_INTB128 IEN0
93 #define IEN_PERIB_INTB129 IEN1
94 #define IR_PERIB_INTB128 128
95 #define IR_PERIB_INTB129 129
97 void vIntQTimerISR0( void ) __attribute__ ((interrupt));
98 void vIntQTimerISR1( void ) __attribute__ ((interrupt));
100 #define tmrTIMER_0_1_FREQUENCY ( 2000UL )
101 #define tmrTIMER_2_3_FREQUENCY ( 2001UL )
103 void vInitialiseTimerForIntQueueTest( void )
105 /* Ensure interrupts do not start until full configuration is complete. */
106 portENTER_CRITICAL();
108 /* Give write access. */
109 SYSTEM.PRCR.WORD = 0xa502;
111 /* Cascade two 8bit timer channels to generate the interrupts.
112 8bit timer unit 1 (TMR0 and TMR1) and 8bit timer unit 2 (TMR2 and TMR3 are
113 utilised for this test. */
115 /* Enable the timers. */
116 SYSTEM.MSTPCRA.BIT.MSTPA5 = 0;
117 SYSTEM.MSTPCRA.BIT.MSTPA4 = 0;
119 /* Enable compare match A interrupt request. */
120 TMR0.TCR.BIT.CMIEA = 1;
121 TMR2.TCR.BIT.CMIEA = 1;
123 /* Clear the timer on compare match A. */
124 TMR0.TCR.BIT.CCLR = 1;
125 TMR2.TCR.BIT.CCLR = 1;
127 /* Set the compare match value. */
128 TMR01.TCORA = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / tmrTIMER_0_1_FREQUENCY ) -1 ) / 8 );
129 TMR23.TCORA = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / tmrTIMER_0_1_FREQUENCY ) -1 ) / 8 );
131 /* 16 bit operation ( count from timer 1,2 ). */
132 TMR0.TCCR.BIT.CSS = 3;
133 TMR2.TCCR.BIT.CSS = 3;
135 /* Use PCLK as the input. */
136 TMR1.TCCR.BIT.CSS = 1;
137 TMR3.TCCR.BIT.CSS = 1;
139 /* Divide PCLK by 8. */
140 TMR1.TCCR.BIT.CKS = 2;
141 TMR3.TCCR.BIT.CKS = 2;
143 /* Enable TMR 0, 2 interrupts. */
144 TMR0.TCR.BIT.CMIEA = 1;
145 TMR2.TCR.BIT.CMIEA = 1;
147 /* Map TMR0 CMIA0 interrupt to vector slot B number 128 and set
148 priority above the kernel's priority, but below the max syscall
150 ICU.SLIBXR128.BYTE = 3; /* Three is TMR0 compare match A. */
151 IPR( PERIB, INTB128 ) = configMAX_SYSCALL_INTERRUPT_PRIORITY - 1;
152 IEN( PERIB, INTB128 ) = 1;
154 /* Ensure that the flag is set to 0, otherwise the interrupt will not be
156 IR( PERIB, INTB128 ) = 0;
158 /* Do the same for TMR2, but to vector 129. */
159 ICU.SLIBXR129.BYTE = 9; /* Nine is TMR2 compare match A. */
160 IPR( PERIB, INTB129 ) = configMAX_SYSCALL_INTERRUPT_PRIORITY - 2;
161 IEN( PERIB, INTB129 ) = 1;
162 IR( PERIB, INTB129 ) = 0;
166 /*-----------------------------------------------------------*/
169 void vIntQTimerISR0( void )
171 /* Enable interrupts to allow interrupt nesting. */
172 __asm volatile( "setpsw i" );
174 portYIELD_FROM_ISR( xFirstTimerHandler() );
176 /*-----------------------------------------------------------*/
179 void vIntQTimerISR1( void )
181 /* Enable interrupts to allow interrupt nesting. */
182 __asm volatile( "setpsw i" );
184 portYIELD_FROM_ISR( xSecondTimerHandler() );