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串口调试输入字符改变pwm参数,控制舵机为什么没有反应,求大神解惑
#include "usart.h"
void usart_Init()
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);//GPIO¶Ë¿ú
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);//¸′óÃ
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);//′®¿ú
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;//éèÖÃËùÂê tx
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;//Ñ¡Ôñ1ü½Å A9
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;//Ñ¡Ôñ¸′óÃíÆíìêä3öÄ£ê½
GPIO_Init(GPIOA,&GPIO_InitStructure);//ÅäÖÃ1ü½Åíaé裬¶Ô½á11ìå3õê¼»ˉ
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;//Ñ¡Ôñ1ü½Å A10 rx
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;//Ñ¡¸¡¿Õêäèë
GPIO_Init(GPIOA,&GPIO_InitStructure);//ÅäÖÃ1ü½Åíaé裬¶Ô½á11ìå3õê¼»ˉ
USART_InitStructure.USART_BaudRate = 9600;//2¨ìØÂêéèÖÃ
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//êy¾Y3¤¶è 96n81
USART_InitStructure.USART_StopBits = USART_StopBits_1;//Ö¡½áÎ2í£Ö1λ
USART_InitStructure.USART_Parity = USART_Parity_No;//D£Ñéģ꽣¬ÎTD£Ñé
USART_InitStructure.USART_HardwareFlowControl =USART_HardwareFlowControl_None;
//ó2¼tá÷¿ØÖÆÄ£ê½ê1Äüê§Äü
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;//·¢Ëí½óêÕÄ£ê½ê1Äü(è«Ë«1¤)
/*USART_InitStructure.USART_Clock = USART_Clock_Disable;
USART_InitStructure.USART_CPOL = USART_CPOL_High;
USART_InitStructure.USART_CPHA = USART_CPHA_1Edge;
USART_InitStructure.USART_LastBit = USART_LastBit_Enable;*/
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);//′®¿úí¨DÅê1Äü
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//′®¿ú½óêÕÖD¶Ïê1Äü
USART_ClearFlag(USART1, USART_FLAG_TC);//Çå¿Õ ·¢Ëííê3é±ê־λ
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//·Ö×éoˉêy
NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;//′ò¿aUSART1μÄ諾ÖÖD¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;//ÇàÕ¼óÅÏè¼¶0
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;//Ïìó|óÅÏè¼¶0
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
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中断函数
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