void SCU_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_InitTypeDef TIM_InitStructure;
UART_InitTypeDef UART_InitStructure;
/* SYSTEM CLOCK Configuration ------------------------------------------------*/
//CPU = 25MHZ
SCU_MCLKSourceConfig(SCU_MCLK_OSC);
SCU_RCLKDivisorConfig(SCU_RCLK_Div8);
SCU_HCLKDivisorConfig(SCU_HCLK_Div1);
SCU_PCLKDivisorConfig(SCU_PCLK_Div1);
SCU_BRCLKDivisorConfig(SCU_BRCLK_Div2); //24MHZ
//PLL = 96MHz
SCU_PLLCmd(DISABLE);
SCU_PLLFactorsConfig(0xC0,0x19,0x2);
SCU_PLLCmd(ENABLE);
//CPU = 96MHZ
SCU_MCLKSourceConfig(SCU_MCLK_PLL);
/* SYSTEM interrupt controller Configuration ------------------------------------------------*/
SCU_AHBPeriphClockConfig(__VIC, ENABLE);
SCU_APBPeriphReset(__VIC,DISABLE);
VIC_DeInit();
/* TIMER Configuration -------------------------------------------------------*/
/* TIM0 Deinitialization */
#if 1//定时器开关
TIM_DeInit(TIM0);
// Enable TIM0 clocks
SCU_APBPeriphClockConfig(__TIM01, ENABLE);
// Release TIM0 reset
SCU_APBPeriphReset(__TIM01,DISABLE);
// TIM Configuration in Output Compare Timing Mode period 100us
TIM_InitStructure.TIM_Mode = TIM_OCM_CHANNEL_1; // OUTPUT COMPARE CHANNEL 1 Mode
TIM_InitStructure.TIM_OC1_Modes = TIM_TIMING; // OCMP1 pin is disabled
TIM_InitStructure.TIM_Clock_Source = TIM_CLK_APB; // assign PCLK to TIM_Clk
TIM_InitStructure.TIM_Prescaler = 12 - 1; // 1us resolution
TIM_InitStructure.TIM_Pulse_Length_1 = 1000; // 1 ms period
TIM_Init(TIM0, &TIM_InitStructure);
// VIC configuration
VIC_Config(TIM0_ITLine, VIC_IRQ, TIM0_ITLine);
//VIC_Config(TIM0_ITLine, VIC_IRQ, 0);
VIC_ITCmd(TIM0_ITLine, ENABLE);
/* Clear TIM0 ISR registers */
TIM_ClearFlag(TIM0, TIM_FLAG_OC1| TIM_FLAG_OC2| TIM_FLAG_TO|TIM_FLAG_IC1|TIM_FLAG_IC2);
/* Enable TIM0 IC1 interrupt */
TIM_ITConfig(TIM0, TIM_IT_OC1, ENABLE);
/* Start the counter of TIM0 */
TIM_CounterCmd(TIM0, TIM_START);
#endif
/* GPIO Configuration --------------------------------------------------------*/
SCU_APBPeriphClockConfig(__GPIO3, ENABLE); /* Enable the clock for GPIO3 */
GPIO_DeInit(GPIO3); /* GPIO3 Deinitialization */
SCU_APBPeriphClockConfig(__GPIO5, ENABLE); /* Enable the clock for GPIO5 */
GPIO_DeInit(GPIO5);
GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;//GPIO_Pin_0 |GPIO_Pin_4;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_Alternate=GPIO_OutputAlt1;
GPIO_Init (GPIO3, &GPIO_InitStructure);
/*Gonfigure UART0_Rx pin GPIO5.1*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinInput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPConnected = GPIO_IPConnected_Enable;
GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1;
GPIO_Init (GPIO5, &GPIO_InitStructure);
/*Gonfigure UART0_Tx pin GPIO3.4*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt3 ;
GPIO_Init (GPIO3, &GPIO_InitStructure);
/* UART Configuration --------------------------------------------------------*/
// Release reset and enable clock
UART_DeInit(UART0);
// Enable UART0 clocks
SCU_APBPeriphClockConfig(__UART0, ENABLE);
// Release UART0 reset
SCU_APBPeriphReset(__UART0, DISABLE);
UART_InitStructure.UART_WordLength = UART_WordLength_8D;
UART_InitStructure.UART_StopBits = UART_StopBits_1;
UART_InitStructure.UART_Parity = UART_Parity_No ;
UART_InitStructure.UART_BaudRate = 115200;
UART_InitStructure.UART_HardwareFlowControl = UART_HardwareFlowControl_None;
UART_InitStructure.UART_Mode = UART_Mode_Tx_Rx;
UART_InitStructure.UART_FIFO = UART_FIFO_Disable;
UART_Init(UART0, &UART_InitStructure);
UART_DMACmd(UART0,UART_DMAReq_Tx | UART_DMAReq_Rx, DISABLE);
// Enable and configure the priority of the UART0 Update IRQ Channel
// VIC_Config(UART0_ITLine, VIC_IRQ, 14);
VIC_Config(UART0_ITLine, VIC_IRQ, 0);
VIC_ITCmd(UART0_ITLine, ENABLE);
/* Enable UART interrupt */
UART_ITConfig(UART0, UART_IT_Receive, ENABLE);
/* Enable the UART0 */
UART_Cmd(UART0, ENABLE);
// Enable the Interrupt controller to manage IRQ channel
__enable_interrupt();
}
//定时器中断
void TIM0_IRQHandler(void)
{
TIM0->CNTR=0;
//TIM_CounterCmd(TIM0, TIM_START);
/* Clear TIM0 ISR registers */
TIM_ClearFlag(TIM0, TIM_FLAG_OC1);
}
//UART0 中断
void UART0_IRQHandler(void)
{
unsigned char data1;
data1 = UART_ReceiveData(UART0);
UART_SendData(UART0, data1); // resend received data
/* Clear the UART0 Receive interrupt */
UART_ClearITPendingBit(UART0, UART_IT_Receive);
}
当我定时器打开的时候,UART接收会收漏丢!如果,把定时器关了,就收得很正常~
谁帮我看一下,竟究是什么问题,谢谢!!!
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