|
|
函數(shù)功能：把TIM2初始化為編碼器接口模式
入口參數(shù)：無
返回 值：無
**************************************************************************/
void Encoder_Init_TIM2(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能定時器4的時鐘
// RCC_APB2PeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);//使能PB端口時鐘
//
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1; //端口配置
// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //浮空輸入
// GPIO_Init(GPIOA, &GPIO_InitStructure);
//根據(jù)設(shè)定參數(shù)初始化GPIOB
RCC_APB2PeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);//使能PB端口時鐘
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6|GPIO_Pin_7; //端口配置
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //浮空輸入
GPIO_Init(GPIOB, &GPIO_InitStructure);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // 預(yù)分頻器
TIM_TimeBaseStructure.TIM_Period = 1024; //設(shè)定計數(shù)器自動重裝值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//選擇時鐘分頻：不分頻
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;////TIM向上計數(shù)
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);//使用編碼器模式3
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 10;
TIM_ICInit(TIM2, &TIM_ICInitStructure);
TIM_ClearFlag(TIM2, TIM_FLAG_Update);//清除TIM的更新標(biāo)志位
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
//Reset counter
TIM_SetCounter(TIM2,0);
TIM_Cmd(TIM2, ENABLE);
}
|
|
