From 67e214beaf8721ce27e4bdc638e5577b17d18f81 Mon Sep 17 00:00:00 2001
From: Eric Brombaugh <ebrombaugh1@cox.net>
Date: Sun, 26 Mar 2023 20:09:30 -0700
Subject: [PATCH] Cleaned up, removed debug stuff
---
examples/systick_irq/systick.h | 5 -----
examples/systick_irq/systick_irq.c | 23 +++--------------------
2 files changed, 3 insertions(+), 25 deletions(-)
diff --git a/examples/systick_irq/systick.h b/examples/systick_irq/systick.h
index 8aaa3ef..53bde7c 100644
--- a/examples/systick_irq/systick.h
+++ b/examples/systick_irq/systick.h
@@ -29,13 +29,8 @@ void systick_init(void)
/* Clear any existing IRQ */
SysTick->SR &= ~SYSTICK_SR_CNTIF;
-#if 1
/* Set the tick interval to 1ms for normal op */
SysTick->CMP = (SYSTEM_CORE_CLOCK/1000)-1;
-#else
- /* Set the tick interval to 1s for debug */
- SysTick->CMP = (SYSTEM_CORE_CLOCK)-1;
-#endif
/* Start at zero */
SysTick->CNT = 0;
diff --git a/examples/systick_irq/systick_irq.c b/examples/systick_irq/systick_irq.c
index 589ed89..ebc0165 100644
--- a/examples/systick_irq/systick_irq.c
+++ b/examples/systick_irq/systick_irq.c
@@ -28,24 +28,6 @@ int main()
systick_init();
printf("done.\n\r");
-#if 0
- // Debugging - does ISR run & inc counter?
- // this section shows that IRQs during print will reset system, but during
- // inf while() do not.
-
- // does cnt inc?
- uint32_t pcnt = systick_cnt;
- while(1)
- {
- if(pcnt != systick_cnt)
- {
- printf("CNT = 0x%08X ", SysTick->CNT);
- printf("systick_cnt = %d\n\r", systick_cnt);
- pcnt = systick_cnt;
- }
- }
-#else
- // Testing 1ms Systick
// Enable GPIOs
RCC->APB2PCENR |= RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOC;
@@ -61,16 +43,17 @@ int main()
GPIOC->CFGLR &= ~(0xf<<(4*0));
GPIOC->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP)<<(4*0);
- //printf("looping...\n\r");
+ printf("looping...\n\r");
while(1)
{
GPIOD->BSHR = 1 | (1<<4); // Turn on GPIOs
+ systick_delay_ms( 250 );
GPIOC->BSHR = 1;
systick_delay_ms( 250 );
GPIOD->BSHR = (1<<16) | (1<<(16+4)); // Turn off GPIODs
+ systick_delay_ms( 250 );
GPIOC->BSHR = (1<<16);
systick_delay_ms( 250 );
printf( "Count: %lu\n\r", count++ );
}
-#endif
}
--
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