stm32F103C8T6 旋转编码器
时间: 2023-07-30 20:10:55 浏览: 192
STM32 F103C8T6学习笔记19:驱动旋转编码器.rar
STM32F103C8T6也可以使用TIM模块来读取旋转编码器,步骤如下:
1. 配置GPIO引脚为TIM输入捕获通道。
2. 配置TIM为编码器模式,使用两个输入捕获通道。
3. 在程序中启动TIM计数器。
4. 在捕获中断中读取TIM的CNT寄存器值,即为编码器当前位置。
5. 根据编码器转动方向,增加或减少计数器值。
下面是一个使用TIM2和GPIOA0、GPIOA1读取编码器值的例子代码:
```
#include "stm32f10x.h"
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* TIM2 clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
/* GPIOA clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
/* Configure PA0 and PA1 as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void TIM_Configuration(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
/* TIM2 configuration in encoder mode */
TIM_TimeBaseStructure.TIM_Prescaler = 0;
TIM_TimeBaseStructure.TIM_Period = 0xFFFF;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 6;
TIM_ICInit(TIM2, &TIM_ICInitStructure);
TIM_Cmd(TIM2, ENABLE);
}
int main(void)
{
uint16_t encoder_value = 0;
GPIO_Configuration();
TIM_Configuration();
while (1)
{
/* Read encoder value */
encoder_value = TIM_GetCounter(TIM2);
/* Process encoder value */
}
}
```
阅读全文