GPIO_InitTypeDef GPIO_InitStructure;
TIM_InitTypeDef TIM_InitStructure;
UART_InitTypeDef UART_InitStructure;
#if 1
/* SYSTEM CLOCK Configuration ------------------------------------------------*/
//CPU = 25MHZ
SCU_MCLKSourceConfig(SCU_MCLK_OSC);
SCU_RCLKDivisorConfig(SCU_RCLK_Div1024);//执这里出错
//PLL = 96MHz
SCU_PLLCmd(DISABLE);
SCU_PLLFactorsConfig(0xC0,0x19,0x2);
SCU_PLLCmd(ENABLE);
//CPU = 96MHZ
SCU_MCLKSourceConfig(SCU_MCLK_PLL);
#endif
/* SYSTEM CLOCK Configuration ------------------------------------------------*/
SCU_AHBPeriphClockConfig(__VIC, ENABLE);
VIC_DeInit();
/* VIC configuration */
VIC_Config(TIM0_ITLine, VIC_IRQ, TIM0_ITLine);
VIC_ITCmd(TIM0_ITLine, ENABLE);
VIC_Config(UART0_ITLine, VIC_IRQ, UART0_ITLine);
VIC_ITCmd(UART0_ITLine, ENABLE);
/* TIMER Configuration -------------------------------------------------------*/
/* TIM0 Deinitialization */
SCU_APBPeriphClockConfig(__TIM01, ENABLE); /* Enable the clock for TIM0 and TIM1 */
TIM_DeInit(TIM0);
/* TIM0 Structure Initialization */
TIM_StructInit(&TIM_InitStructure);
TIM_InitStructure.TIM_Mode = TIM_OCM_CHANNEL_1;
TIM_InitStructure.TIM_Clock_Source = TIM_CLK_APB;
TIM_InitStructure.TIM_Prescaler = 0;
TIM_InitStructure.TIM_Pulse_Level_1 = TIM_HIGH;
TIM_InitStructure.TIM_Period_Level = TIM_LOW;
TIM_InitStructure.TIM_Pulse_Length_1 = 0x200;
TIM_InitStructure.TIM_Full_Period = 0x404;
TIM_InitStructure.TIM_OC1_Modes=TIM_TIMING;
TIM_Init (TIM0, &TIM_InitStructure);
/* 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);
/* GPIO Configuration --------------------------------------------------------*/
SCU_APBPeriphClockConfig(__GPIO3, ENABLE); /* Enable the clock for GPIO3 */
GPIO_DeInit(GPIO3); /* GPIO3 Deinitialization */
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_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);
GPIO_DeInit(GPIO5);
/*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_Init (GPIO5, &GPIO_InitStructure);
/* UART Configuration --------------------------------------------------------*/
SCU_APBPeriphClockConfig(__UART0, ENABLE);
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_Enable;
UART_InitStructure.UART_TxFIFOLevel = UART_FIFOLevel_1_2; /* FIFO size 16 bytes, FIFO level 8 bytes */
UART_InitStructure.UART_RxFIFOLevel = UART_FIFOLevel_1_2; /* FIFO size 16 bytes, FIFO level 8 bytes */
UART_DeInit(UART0);
UART_Init(UART0, &UART_InitStructure);
/* Clear UART flags*/
UART_ClearFlag(UART0);
/* Enable UART interrupt */
UART_ITConfig(UART0, UART_IT_Receive, ENABLE);
/* Enable the UART0 */
UART_Cmd(UART0, ENABLE);
}
为什么会这样,请各位大侠帮我看看,究竟是怎么回事?有什么办法解决!谢谢各位了! |
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