116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/********************************** (C) COPYRIGHT *******************************
|
|
* File Name : main.c
|
|
* Author : WCH
|
|
* Version : V1.0.1
|
|
* Date : 2025/09/26
|
|
* 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
|
|
*slave mode routine:
|
|
*TIM1_CH1(PA8)
|
|
*This example demonstrates that when the TIM_CH1(PA8) pin detects a rising edge, TIM1 works
|
|
*differently in different slave modes.
|
|
*RESET_MODE: TIM1->CNT reset and recount
|
|
*GATED_MODE: PA8 pin input low level, TIM1->CNT counts normally, otherwise stop counting.
|
|
*TRIGGER__MODE: TIM1->CNT continues counting.
|
|
*
|
|
*/
|
|
|
|
#include "debug.h"
|
|
|
|
/* Slave Mode Definition */
|
|
#define RESET_MODE 0
|
|
#define GATED_MODE 1
|
|
#define TRIGGER__MODE 2
|
|
|
|
/* Slave Mode Selection */
|
|
//#define SLAVE_MODE RESET_MODE
|
|
//#define SLAVE_MODE GATED_MODE
|
|
#define SLAVE_MODE TRIGGER__MODE
|
|
|
|
/*********************************************************************
|
|
* @fn TIM1_Synchro_ExtTrigger_Init
|
|
*
|
|
* @brief Initializes TIM1 external trigger synchronization.
|
|
*
|
|
* @param arr - the period value.
|
|
* psc - the prescaler value.
|
|
*
|
|
* @return none
|
|
*/
|
|
void TIM1_Synchro_ExtTrigger_Init(u16 arr, u16 psc)
|
|
{
|
|
GPIO_InitTypeDef GPIO_InitStructure={0};
|
|
TIM_ICInitTypeDef TIM_ICInitStructure={0};
|
|
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure={0};
|
|
|
|
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_TIM1, ENABLE );
|
|
|
|
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
|
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure);
|
|
GPIO_ResetBits( GPIOA, GPIO_Pin_8 );
|
|
|
|
TIM_TimeBaseInitStructure.TIM_Period = arr-1;
|
|
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_ICInit( TIM1, &TIM_ICInitStructure );
|
|
|
|
TIM_SelectInputTrigger( TIM1, TIM_TS_TI1FP1 );
|
|
|
|
#if (SLAVE_MODE == RESET_MODE)
|
|
TIM_SelectSlaveMode( TIM1, TIM_SlaveMode_Reset );
|
|
|
|
#elif (SLAVE_MODE == GATED_MODE)
|
|
TIM_SelectSlaveMode( TIM1, TIM_SlaveMode_Gated );
|
|
|
|
#elif (SLAVE_MODE == TRIGGER__MODE)
|
|
TIM_SelectMasterSlaveMode( TIM1, TIM_SlaveMode_Trigger );
|
|
|
|
#endif
|
|
|
|
TIM_SelectMasterSlaveMode( TIM1, TIM_MasterSlaveMode_Enable );
|
|
|
|
#if (SLAVE_MODE != TRIGGER__MODE)
|
|
TIM_Cmd( TIM1, ENABLE );
|
|
|
|
#endif
|
|
}
|
|
/*********************************************************************
|
|
* @fn main
|
|
*
|
|
* @brief Main program.
|
|
*
|
|
* @return none
|
|
*/
|
|
int main(void)
|
|
{
|
|
SystemCoreClockUpdate();
|
|
USART_Printf_Init(115200);
|
|
printf("SystemClk:%d\r\n",SystemCoreClock);
|
|
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
|
|
|
|
TIM1_Synchro_ExtTrigger_Init( 0xFFFF, 48000-1);
|
|
|
|
while(1)
|
|
{
|
|
printf("cnt:%d\r\n", TIM1->CNT);
|
|
}
|
|
}
|
|
|