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Replace the static prvSetupTimerInterrupt() function in the Cortex-M port layers that still used it (other than MPU ports so far) with a weakly defined function call vPortSetupTimerInterrupt() - which allows application writers to override the function with one that uses a different clock.

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This commit is contained in:
Richard Barry 2019-12-30 21:16:09 +00:00
parent e23d638afd
commit e292c67933
6 changed files with 68 additions and 49 deletions
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10
FreeRTOS/Source/portable/GCC/ARM_CM0/port.c
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@ -71,9 +71,11 @@ debugger. */
#endif
/*
* Setup the timer to generate the tick interrupts.
* Setup the timer to generate the tick interrupts. The implementation in this
* file is weak to allow application writers to change the timer used to
* generate the tick interrupt.
*/
static void prvSetupTimerInterrupt( void );
void vPortSetupTimerInterrupt( void );
/*
* Exception handlers.
@ -217,7 +219,7 @@ BaseType_t xPortStartScheduler( void )
/* Start the timer that generates the tick ISR. Interrupts are disabled
here already. */
prvSetupTimerInterrupt();
vPortSetupTimerInterrupt();
/* Initialise the critical nesting count ready for the first task. */
uxCriticalNesting = 0;
@ -370,7 +372,7 @@ uint32_t ulPreviousMask;
* Setup the systick timer to generate the tick interrupts at the required
* frequency.
*/
void prvSetupTimerInterrupt( void )
__attribute__(( weak )) void vPortSetupTimerInterrupt( void )
{
/* Calculate the constants required to configure the tick interrupt. */
#if( configUSE_TICKLESS_IDLE == 1 )