From 3ef44bff54e6f5e94b89bbd8afb5243075b668a0 Mon Sep 17 00:00:00 2001 From: Felix Ruess Date: Tue, 19 Feb 2013 19:22:49 +0100 Subject: [cm3] fix doxygen for systick_get_value, add systick_get_reload Fix the reload value in the examples: to get a SysTick interrupt every N clock pulses: set reload to N-1 see http://infocenter.arm.com/help/topic/com.arm.doc.dui0552a/BGBEEJHC.html#BABGACGG --- examples/stm32/f1/obldc/systick/systick.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'examples/stm32/f1/obldc/systick/systick.c') diff --git a/examples/stm32/f1/obldc/systick/systick.c b/examples/stm32/f1/obldc/systick/systick.c index 1426793..4c293d4 100644 --- a/examples/stm32/f1/obldc/systick/systick.c +++ b/examples/stm32/f1/obldc/systick/systick.c @@ -77,7 +77,8 @@ int main(void) systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8); /* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */ - systick_set_reload(9000); + /* SysTick interrupt every N clock pulses: set reload to N-1 */ + systick_set_reload(8999); systick_interrupt_enable(); -- cgit v1.2.3