From 37f7ebeb68e69c3ba9f5be819d35d248e09bacab Mon Sep 17 00:00:00 2001
From: zhyinch <zhyinch@gmail.com>
Date: 星期三, 13 十一月 2019 10:58:29 +0800
Subject: [PATCH] 1
---
源码/核心板/Src/OnChipDevices/Rcc_Nvic_Systick.c | 33 ++++++++++++++++++++++++++++++++-
1 files changed, 32 insertions(+), 1 deletions(-)
diff --git "a/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Rcc_Nvic_Systick.c" "b/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Rcc_Nvic_Systick.c"
index e526fb3..15cffba 100644
--- "a/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Rcc_Nvic_Systick.c"
+++ "b/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Rcc_Nvic_Systick.c"
@@ -145,7 +145,38 @@
NVIC_Init(&NVIC_InitStructure);
}
-
+//?????3?????
+//???????APB1?2?,?APB1?36M
+//arr:??????
+//psc:??????
+//?????????3!
+void TIM3_Int_Init(void)
+{
+ TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
+ NVIC_InitTypeDef NVIC_InitStructure;
+
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //????
+
+ //???TIM3???
+ TIM_TimeBaseStructure.TIM_Period = 1000-1; //???????????????????????????
+ TIM_TimeBaseStructure.TIM_Prescaler =72-1; //??????TIMx???????????
+ TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //??????:TDTS = Tck_tim
+ TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM??????
+ TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //??????????TIMx???????
+
+ TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //?????TIM3??,??????
+
+ //?????NVIC??
+ NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3??
+ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //?????0?
+ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //????3?
+ NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ?????
+ NVIC_Init(&NVIC_InitStructure); //???NVIC???
+
+
+ TIM_Cmd(TIM3, ENABLE); //??TIMx
+}
+//???3??????
int Systick_Init(void)
{
int time_retry = 500;
--
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