98 lines
2.8 KiB
C
98 lines
2.8 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
|
|
*PWM output routine:
|
|
*TIM1_CH1(PA8)
|
|
*This example demonstrates that the TIM_CH1(PA8) pin outputs PWM in PWM
|
|
*mode 1 and PWM mode 2.
|
|
*
|
|
*/
|
|
|
|
#include "debug.h"
|
|
|
|
/* PWM Output Mode Definition */
|
|
#define PWM_MODE1 0
|
|
#define PWM_MODE2 1
|
|
|
|
/* PWM Output Mode Selection */
|
|
//#define PWM_MODE PWM_MODE1
|
|
#define PWM_MODE PWM_MODE2
|
|
|
|
/*********************************************************************
|
|
* @fn TIM1_PWMOut_Init
|
|
*
|
|
* @brief Initializes TIM1 PWM Output.
|
|
*
|
|
* @param arr - the period value.
|
|
* psc - the prescaler value.
|
|
* ccp - the pulse value.
|
|
*
|
|
* @return none
|
|
*/
|
|
void TIM1_PWMOut_Init(u16 arr, u16 psc, u16 ccp)
|
|
{
|
|
GPIO_InitTypeDef GPIO_InitStructure={0};
|
|
TIM_OCInitTypeDef TIM_OCInitStructure={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_AF_PP;
|
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
|
GPIO_Init( GPIOA, &GPIO_InitStructure );
|
|
|
|
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_TimeBaseInit( TIM1, &TIM_TimeBaseInitStructure);
|
|
|
|
#if (PWM_MODE == PWM_MODE1)
|
|
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
|
|
|
|
#elif (PWM_MODE == PWM_MODE2)
|
|
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
|
|
|
|
#endif
|
|
|
|
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
|
|
TIM_OCInitStructure.TIM_Pulse = ccp;
|
|
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
|
|
TIM_OC1Init( TIM1, &TIM_OCInitStructure );
|
|
|
|
TIM_CtrlPWMOutputs(TIM1, ENABLE );
|
|
TIM_OC1PreloadConfig( TIM1, TIM_OCPreload_Disable );
|
|
TIM_ARRPreloadConfig( TIM1, ENABLE );
|
|
TIM_Cmd( TIM1, ENABLE );
|
|
}
|
|
/*********************************************************************
|
|
* @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_PWMOut_Init( 100, 48000-1, 50 );
|
|
|
|
while(1);
|
|
}
|