From 7ed94acdff39d7141b9e899c3377bcf5ea71b12f Mon Sep 17 00:00:00 2001 From: Richard Barry Date: Sun, 6 Apr 2008 09:25:00 +0000 Subject: [PATCH] Corrected SysTick interval calculation. --- Source/portable/GCC/ARM_CM3/port.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Source/portable/GCC/ARM_CM3/port.c b/Source/portable/GCC/ARM_CM3/port.c index cc3568fde..eb0e03340 100644 --- a/Source/portable/GCC/ARM_CM3/port.c +++ b/Source/portable/GCC/ARM_CM3/port.c @@ -276,7 +276,7 @@ void xPortSysTickHandler( void ) void prvSetupTimerInterrupt( void ) { /* Configure SysTick to interrupt at the requested rate. */ - *(portNVIC_SYSTICK_LOAD) = configCPU_CLOCK_HZ / configTICK_RATE_HZ; + *(portNVIC_SYSTICK_LOAD) = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL; *(portNVIC_SYSTICK_CTRL) = portNVIC_SYSTICK_CLK | portNVIC_SYSTICK_INT | portNVIC_SYSTICK_ENABLE; } /*-----------------------------------------------------------*/