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发表于 2010-12-1 17:45:02
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现在绿色的LED闪烁，还是ping 不通，问过Bernard，他说看中断有没有进。我测试后，发现可能没有进。
static void RCC_Configuration(void)
{
/* enable spi1 clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
/* enable gpiob port clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);
}
static void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure one bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
/* Enable the EXTI1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
static void GPIO_Configuration()
{
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
/* configure PC1 as external interrupt */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Configure SPI1 pins: SCK, MISO and MOSI ----------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* Connect ENC28J60 EXTI Line to GPIOC Pin 1 */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource1);
/* Configure ENC28J60 EXTI Line to generate an interrupt on falling edge */
EXTI_InitStructure.EXTI_Line = EXTI_Line1;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Clear the Key Button EXTI line pending bit */
EXTI_ClearITPendingBit(EXTI_Line1);
}
static void SetupSPI (void)
{
SPI_InitTypeDef SPI_InitStructure;
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE);
}
void EXTI1_IRQHandler(void)
{
extern void enc28j60_isr(void);
/* enter interrupt */
rt_interrupt_enter();
enc28j60_isr();
/* Clear the Key Button EXTI line pending bit */
EXTI_ClearITPendingBit(EXTI_Line1);
/* leave interrupt */
rt_interrupt_leave();
}
我使用的中断管脚是PC1.谁帮我看看有什么问题，我看不出来。还没有看enc28j60是否有中断过来。没有示波器现在。 |
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