//以太网中断服务函数
void ETH_IRQHandler(void)
{
while(ETH_GetRxPktSize(DMARxDescToGet)!=0) //检测是否收到数据包
{
LwIP_Pkt_Handle();
}
ETH_DMAClearITPendingBit(ETH_DMA_IT_R);
ETH_DMAClearITPendingBit(ETH_DMA_IT_NIS);
}
/**
* @brief This function handles ETH interrupt request.
* @param None
* @retval None
*/
void ETH_IRQHandler(void)
{
/* Handles all the received frames */
while(ETH_GetRxPktSize(DMARxDescToGet) != 0)
{
LwIP_Pkt_Handle();
}
/* Clear the Eth DMA Rx IT pending bits */
ETH_DMAClearITPendingBit(ETH_DMA_IT_R);
ETH_DMAClearITPendingBit(ETH_DMA_IT_NIS);
}
/**
* This function should be called when a packet is ready to be read
* from the interface. It uses the function low_level_input() that
* should handle the actual reception of bytes from the network
* interface. Then the type of the received packet is determined and
* the appropriate input function is called.
*
* @param netif the lwip network interface structure for this ethernetif
*/
err_t ethernetif_1_input (struct netif *netif)
{
//(void)p_arg;
//INT8U err;
struct pbuf *p;
extern struct netif netif_1;
netif = &netif_1;
while(1)
{
// OSSemPend(Eth1_pkt_Sem,0,&err);
// printf("\n\n\r网口1数据包接收信号量");
//ethernetif_1_input(netif);
if(ETH_GetRxPktSize() != 0)
{
//ethernetif_1_input(netif);
SYS_ARCH_DECL_PROTECT(sr);
SYS_ARCH_PROTECT(sr);
/* move received packet into a new pbuf */
p = low_level_1_input(netif);
SYS_ARCH_UNPROTECT(sr);
if (p != NULL)
{
err_t err;
err = netif->input(p, netif); // 将pbuf传递给上层协议栈
if (err != ERR_OK)
{
LWIP_DEBUGF(NETIF_DEBUG, ("ethernetif_input: IP input error\n"));
pbuf_free(p);
p = NULL;
}
}
}
else
{
OSTimeDlyHMSM(0, 0, 0, 5);
}
}
}
/* Eth Isr routine */
static void Eth_Isr(void)
{
uint32_t res = 0;
while((ETH_GetRxPktSize() != 0) && (res == 0))
{
/* move received packet into a new pbuf */
struct pbuf *p = low_level_input(&netif);
if(p!=NULL){
tcpip_input(p, &netif);
}else{
res = 1;
}
}
/* Clear the Eth DMA Rx IT pending bits */
ETH_DMAClearITPendingBit(ETH_DMA_IT_R);
ETH_DMAClearITPendingBit(ETH_DMA_IT_NIS);
ETH_DMAClearITPendingBit(ETH_DMA_IT_RO);
ETH_DMAClearITPendingBit(ETH_DMA_IT_RBU);
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
FlagStatus status;
uint16_t bak_dr10;
//uint16_t bak_dr9;
//RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
//PWR_BackupAccessCmd(ENABLE);
//bak_dr10 = BKP_ReadBackupRegister(BKP_DR10);
//bak_dr9 = BKP_ReadBackupRegister(BKP_DR9);
//BKP_WriteBackupRegister(BKP_DR10, 0x0707);
//BKP_WriteBackupRegister(BKP_DR9, 0x0001);
/* Test if Key push-button on STM3210C-EVAL Board is not pressed */
//if((bak_dr10 == 0x0707) /*&& (bak_dr9 != 0x0000)*/)
if(1)
{
/* Setup STM32 system (clocks, Ethernet, GPIO, NVIC) and STM3210C-EVAL resources */
System_Setup();
Delay(1000);
//可添加延时, 用以确保DM9000启动时电压满足芯片要求
//"nRST must not go high until after the VDDIO and VDD_CORE supplies are stable" 手册P51
GPIO_WriteBit(ETH_RESET, Bit_SET); //拉高DM9000 nRST, 复位启动
/* Configure the Ethernet peripheral */
Ethernet_Configuration();
/*
//判断设备是否是初次上电, 如果'是', 重启一次, 确保以太网初始化正常
status = RCC_GetFlagStatus(RCC_FLAG_SFTRST);
RCC_ClearFlag();
if(!status)
{
Delay(10);
NVIC_SystemReset();
}
*/
/* Initilaize the LwIP stack */
LwIP_Init();
#ifdef USE_IAP_HTTP
/* Initilaize the webserver module */
IAP_httpd_init();
#endif
#ifdef USE_IAP_TFTP
/* Initialize the TFTP server */
IAP_tftpd_init();
#endif
/* Infinite loop */
while (1)
{
/* check if any packet received */
if (ETH_GetRxPktSize()!=0)
{
/* process received eth packet */
LwIP_Pkt_Handle();
}
/* Periodic tasks */
System_Periodic_Handle();
}
}
/* enter in IAP mode */
else
{
/* Key push-button not pressed: jump to user application */
/* Check if valid stack address (RAM address) then jump to user application */
if (((*(__IO uint32_t*)USER_FLASH_FIRST_PAGE_ADDRESS) & 0x2FFE0000 ) == 0x20000000)
{
/* Jump to user application */
JumpAddress = *(__IO uint32_t*) (USER_FLASH_FIRST_PAGE_ADDRESS + 4);
Jump_To_Application = (pFunction) JumpAddress;
/* Initialize user application's Stack Pointer */
__set_MSP(*(__IO uint32_t*) USER_FLASH_FIRST_PAGE_ADDRESS);
Jump_To_Application();
}
else
{/* Otherwise, do nothing */
/* LED3 (RED) ON to indicate bad software (when not valid stack address) */
//STM_EVAL_LEDInit(LED3);
//STM_EVAL_LEDOn(LED3);
/* do nothing */
while(1);
}
}
return 0;
}
