first submission

2023-02-01 14:19:13 +08:00
parent d534aad004
commit b79c6ac80d
3711 changed files with 745432 additions and 2 deletions
@@ -0,0 +1,94 @@
+/********************************** (C) COPYRIGHT *******************************
+ * File Name          : main.c
+ * Author             : WCH
+ * Version            : V1.0.0
+ * Date               : 2021/06/06
+ * Description        : Main program body.
+*********************************************************************************
+* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+* Attention: This software (modified or not) and binary are used for 
+* microcontroller manufactured by Nanjing Qinheng Microelectronics.
+*******************************************************************************/
+
+/*
+ *@Note
+ Input capture routine:
+ TIM1_CH1(PA8)
+ This example demonstrates the TIM_CH1(PA8) pin floating input, which detects an
+ edge transition to trigger a TIM1 capture interrupt,The rising edge triggers the
+ TIM_IT_CC1 interrupt, and the falling edge triggers the TIM_IT_CC2 interrupt.
+
+*/
+
+#include "debug.h"
+
+/*********************************************************************
+ * @fn      Input_Capture_Init
+ *
+ * @brief   Initializes TIM1 input capture.
+ *
+ * @param   arr - the period value.
+ *          psc - the prescaler value.
+ *          ccp - the pulse value.
+ *
+ * @return  none
+ */
+void Input_Capture_Init(u16 arr, u16 psc)
+{
+    GPIO_InitTypeDef        GPIO_InitStructure = {0};
+    TIM_ICInitTypeDef       TIM_ICInitStructure = {0};
+    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure = {0};
+    NVIC_InitTypeDef        NVIC_InitStructure = {0};
+
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_TIM1, ENABLE);
+
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
+    GPIO_ResetBits(GPIOA, GPIO_Pin_8);
+
+    TIM_TimeBaseInitStructure.TIM_Period = arr;
+    TIM_TimeBaseInitStructure.TIM_Prescaler = psc;
+    TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
+    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
+    TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0x00;
+    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseInitStructure);
+
+    TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
+    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
+    TIM_ICInitStructure.TIM_ICFilter = 0x00;
+    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
+    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
+
+    TIM_PWMIConfig(TIM1, &TIM_ICInitStructure);
+
+    NVIC_InitStructure.NVIC_IRQChannel = TIM1_CC_IRQn;
+    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
+    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+    NVIC_Init(&NVIC_InitStructure);
+
+    TIM_ITConfig(TIM1, TIM_IT_CC1 | TIM_IT_CC2, ENABLE);
+
+    TIM_SelectInputTrigger(TIM1, TIM_TS_TI1FP1);
+    TIM_SelectSlaveMode(TIM1, TIM_SlaveMode_Reset);
+    TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable);
+    TIM_Cmd(TIM1, ENABLE);
+}
+
+/*********************************************************************
+ * @fn      main
+ *
+ * @brief   Main program.
+ *
+ * @return  none
+ */
+int main(void)
+{
+    USART_Printf_Init(115200);
+    printf("SystemClk:%d\r\n", SystemCoreClock);
+
+    Input_Capture_Init(0xFFFF, 48000 - 1);
+
+    while(1);
+}