Differences

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--- stm32:peripherals:nvic [2016/11/29 13:50] – [NVIC - ICERx] kesr
+++ stm32:peripherals:nvic [2022/12/27 18:53] (current) – ruan
@@ Line 1: / Line 1: @@
-====== Nested Vectored Interrupt Controller ======
+====== Nested Vectored Interrupt Controller (NVIC) ======
 The NVIC manages all the interrupts and is closely coupled to the processor core. \\
@@ Line 13: / Line 13: @@
 \\
-===== Programming Example =====
-For external interrupts via GPIO pins go to the [[exti|EXTI]] page. \\
-==== Setup Peripheral (e.g. Timer 2) ====
-<code c>
-#include "reg_stm32f4xx.h"
-RCC->APB1ENR |= (0x1 << 0u);          /* Enable TIM2 clock. */
-/* configure timer */
-TIM2->PSC = 84000u - 1u;              /* Counting with f = 84MHz / 84000 = 1MHz */
-TIM2->ARR = 512u;                     /* Count to 512 */
-TIM2->DIER |= (0x1 << 0u);            /* Enable IRQ */
-TIM2->CR1 |= (0x1 << 0u);             /* Start timer */
-</code>
-\\
-==== Setup NVIC ====
-<code c>
-#include "reg_stm32f4xx.h"
-NVIC->ISER[0] |= (0x1 << 28u);        /* Enable TIM2 global interrupt. */
-</code>
-\\
 ===== Configuration Register =====
@@ Line 47: / Line 19: @@
 ==== NVIC - ISERx ====
-=== ISER0 ===
+=== ISER0 - Interrupt set enable register 0 ===
-Interrupt set enable register 1
 \\ {{nvic_reg_iser1.svg}} \\ \\
-=== ISER1 ===
+=== ISER1 Interrupt set enable register 1 ===
-Interrupt set enable register 2
 \\ {{nvic_reg_iser2.svg}} \\ \\
-=== ISER2 ===
+=== ISER2 - Interrupt set enable register 2 ===
-Interrupt set enable register 3
 \\ {{nvic_reg_iser3.svg}} \\ \\
@@ Line 71: / Line 37: @@
 ==== NVIC - ICERx ====
-=== ICER0 ===
+=== ICER0 - Interrupt clear enable register 0 ===
-Interrupt clear enable register 1
 \\ {{nvic_reg_icer1.svg}} \\ \\
-=== ICER1 ===
+=== ICER1 - Interrupt clear enable register 1 ===
-Interrupt clear enable register 2
 \\ {{nvic_reg_icer2.svg}} \\ \\
-=== ICER2 ===
+=== ICER2 - Interrupt clear enable register 2 ===
-Interrupt clear enable register 3
 \\ {{nvic_reg_icer3.svg}} \\ \\
@@ Line 92: / Line 52: @@
 |CLRENA*|1|Disable interrupt (mask interrupt)|
 //*Setting this bit to 0 has no effect, refer to [[#ISER]]//
+===== Programming Example =====
+For external interrupts via GPIO pins go to the [[exti|EXTI]] page. \\
+==== Setup Peripheral (e.g. Timer 2) ====
+<code c>
+#include "reg_stm32f4xx.h"
+RCC->APB1ENR |= (0x1 << 0u);          /* Enable TIM2 clock. */
+/* configure timer */
+TIM2->PSC = 84000u - 1u;              /* Counting with f = 84MHz / 84000 = 1MHz */
+TIM2->ARR = 512u;                     /* Count to 512 */
+TIM2->DIER |= (0x1 << 0u);            /* Enable IRQ */
+TIM2->CR1 |= (0x1 << 0u);             /* Start timer */
+</code>
+\\
+==== Setup NVIC ====
+<code c>
+#include "reg_stm32f4xx.h"
+NVIC->ISER0 |= (0x1 << 28u);        /* Enable TIM2 global interrupt. */
+</code>
+\\