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写了一个STM32L151C8T6串口中断的程序,如下:
9 T- d- W9 g8 o* d( I' EUSART_InitTypeDef USART_InitStructure;# Y7 p$ `4 R z. _8 N! I# T* X
GPIO_InitTypeDef GPIO_InitStructure;
* J8 c$ D: h. v7 k7 ]* ? TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;# |& J5 E1 {& y' Y& K9 v1 ?
NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); //使能USART1
! ?: w+ Z; R% m! i2 r RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); //GPIOA时钟7 v( y9 m; V$ Q
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2 N3 L: q7 S8 L7 U/ h delay_init(32);4 g/ M8 [# C1 m
//USART1_TX PA9' M. _3 q9 z& o6 D8 c$ A
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;: F/ i9 e2 c% s. P7 T0 l
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
! }" h/ ?. [% c; T GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
* W+ H. T# Q2 S$ g GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;( ]1 t4 ~# K/ L8 O5 l% A6 O) C& P
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; : e7 i) I& B6 g5 s
GPIO_Init(GPIOA, &GPIO_InitStructure);
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& i% E3 N" }9 A, o8 w) w //USART1_RX PA10
1 X4 s# N9 j6 O# [$ |! T GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;" [& L: j, ]* O* U6 a
GPIO_Init(GPIOA, &GPIO_InitStructure);
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+ M3 b6 X- H6 C% w6 C: l USART_DeInit(USART1); //复位串口1! t) y" ]- n4 N6 [$ Z& W, G
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* @7 t3 K9 `8 [5 P GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);
. G8 N% r! r3 i) j% N GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);: ?% w* |, g1 ^/ c: ~; u
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USART_InitStructure.USART_BaudRate = 38400;
& ~1 q9 V* N- L7 f USART_InitStructure.USART_WordLength = USART_WordLength_8b;
1 ^# H5 c7 ~4 {( ] USART_InitStructure.USART_StopBits = USART_StopBits_1;8 q% W8 ?9 {" o* G$ [+ W) @* F
USART_InitStructure.USART_Parity = USART_Parity_No;3 T- {4 G i) m6 V6 _
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
, B2 r# S6 U& G/ F, | USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;8 l. o& ?4 s u, l
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2 V$ S# K- ~9 J; B4 c2 f USART_Init(USART1,&USART_InitStructure);
" {5 ?- o/ r& ]% T USART_Cmd(USART1,ENABLE);6 v5 H, D" d6 N5 [# R- C$ j4 Y; L
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. q+ R# _; c) W& N, k9 r/* Enable the usart1 Interrupt */0 t. `6 c. s1 c/ l7 m
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;7 r9 w& p( b H8 ~8 r
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
2 P# W( `) o$ l0 r2 m6 l/ A/ T NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;; z% D, A/ E) y6 q) g( h5 k% W5 E0 ]
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;4 N( e. V& V5 O& I4 |
NVIC_Init(&NVIC_InitStructure);
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//串口1接收中断
, c- X, ]6 n9 a& \ c# o& m5 Ivoid USART1_IRQHandler(void) //串口1中断服务程序. C- O& L6 k: C. D5 i9 d W: c
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// if(USART_GetITStatus(USART1,USART_IT_RXNE)!=RESET) //是否接收中断发生,使用库函数
: G, M; l+ S$ [9 F if ((USART1->CR1 & (1 << 5)) && (USART1->SR & (1 << 5))) //是否接收中断发生,使用寄存器! F. r* N7 t' V
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5 Y2 l; l$ Y' H' Z Receive_Buffer[Receive_Cnt++] = USART_ReceiveData(USART1); //读取串口接收数据
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% h$ ?& V; W7 V$ i- L5 s if(Receive_Cnt >= 600) Receive_Cnt = 0; //判断缓冲区是否已满 8 f5 D0 M) i' x, i/ e r
$ G" l7 s) I0 M+ b; T u n ReceiveTime = 2; 5 U3 |1 P8 o0 y
}
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发现进不了中断,各位大神看看,哪里有问题?谢谢!1 }7 S& x( F/ {, b( k# b
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