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update lpc176x eth driver 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1766 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
wuyangyong 2011-10-14 15:07:45 +00:00
parent 2d98e4990e
commit 3d9e766c86
2 changed files with 47 additions and 16 deletions
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5
bsp/lpc176x/board.c
View File

@ -42,6 +42,11 @@ void rt_hw_timer_handler(void)
rt_interrupt_leave();
}
void SysTick_Handler(void)
{
rt_hw_timer_handler();
}
/**
* This function will initial LPC17xx board.
*/

58
bsp/lpc176x/emac.c
View File

@ -19,7 +19,8 @@ struct lpc17xx_emac
rt_uint8_t dev_addr[MAX_ADDR_LEN]; /* hw address */
};
static struct lpc17xx_emac lpc17xx_emac_device;
static struct rt_semaphore sem_slot, sem_lock;
static struct rt_semaphore sem_lock;
static struct rt_event tx_event;
/* Local Function Prototypes */
static void write_PHY (rt_uint32_t PhyReg, rt_uint32_t Value);
@ -32,11 +33,8 @@ void ENET_IRQHandler(void)
/* enter interrupt */
rt_interrupt_enter();
status = LPC_EMAC->IntStatus & LPC_EMAC->IntEnable;
status = LPC_EMAC->IntStatus;
/* Clear the interrupt. */
LPC_EMAC->IntClear = status;
if (status & INT_RX_DONE)
{
/* Disable EMAC RxDone interrupts. */
@ -47,10 +45,23 @@ void ENET_IRQHandler(void)
}
else if (status & INT_TX_DONE)
{
/* release one slot */
rt_sem_release(&sem_slot);
/* set event */
rt_event_send(&tx_event, 0x01);
}
if (status & INT_RX_OVERRUN)
{
rt_kprintf("rx overrun\n");
}
if (status & INT_TX_UNDERRUN)
{
rt_kprintf("tx underrun\n");
}
/* Clear the interrupt. */
LPC_EMAC->IntClear = status;
/* leave interrupt */
rt_interrupt_leave();
}
@ -344,8 +355,22 @@ rt_err_t lpc17xx_emac_tx( rt_device_t dev, struct pbuf* p)
struct pbuf *q;
rt_uint8_t *ptr;
/* take a slot */
rt_sem_take(&sem_slot, RT_WAITING_FOREVER);
/* calculate next index */
IndexNext = LPC_EMAC->TxProduceIndex + 1;
if(IndexNext > LPC_EMAC->TxDescriptorNumber) IndexNext = 0;
/* check whether block is full */
while (IndexNext == LPC_EMAC->TxConsumeIndex)
{
rt_err_t result;
rt_uint32_t recved;
/* there is no block yet, wait a flag */
result = rt_event_recv(&tx_event, 0x01,
RT_EVENT_FLAG_AND | RT_EVENT_FLAG_CLEAR, RT_WAITING_FOREVER, &recved);
RT_ASSERT(result == RT_EOK);
}
/* lock EMAC device */
rt_sem_take(&sem_lock, RT_WAITING_FOREVER);
@ -435,19 +460,20 @@ struct pbuf *lpc17xx_emac_rx(rt_device_t dev)
void lpc17xx_emac_hw_init(void)
{
rt_sem_init(&sem_slot, "tx_slot", NUM_TX_FRAG, RT_IPC_FLAG_FIFO);
rt_event_init(&tx_event, "tx_event", RT_IPC_FLAG_FIFO);
rt_sem_init(&sem_lock, "eth_lock", 1, RT_IPC_FLAG_FIFO);
/* set autonegotiation mode */
lpc17xx_emac_device.phy_mode = EMAC_PHY_AUTO;
// OUI 00-60-37 NXP Semiconductors
lpc17xx_emac_device.dev_addr[0] = 0x00;
lpc17xx_emac_device.dev_addr[1] = 0x60;
lpc17xx_emac_device.dev_addr[2] = 0x37;
/* set mac address: (only for test) */
lpc17xx_emac_device.dev_addr[0] = 0x1E;
lpc17xx_emac_device.dev_addr[1] = 0x30;
lpc17xx_emac_device.dev_addr[2] = 0x6C;
lpc17xx_emac_device.dev_addr[3] = 0xA2;
lpc17xx_emac_device.dev_addr[4] = 0x45;
lpc17xx_emac_device.dev_addr[5] = 0x5E;
lpc17xx_emac_device.dev_addr[3] = 0x12;
lpc17xx_emac_device.dev_addr[4] = 0x34;
lpc17xx_emac_device.dev_addr[5] = 0x56;
lpc17xx_emac_device.parent.parent.init = lpc17xx_emac_init;
lpc17xx_emac_device.parent.parent.open = lpc17xx_emac_open;