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Merge pull request #273 from yuht/patch-2 

[bsp/lpc176x] Update emac.c
This commit is contained in:
Bernard Xiong 2014-04-25 20:15:03 +08:00
parent 1fdcede3bf 764c271c2c
commit 431aa6a955
1 changed files with 49 additions and 33 deletions
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82
bsp/lpc176x/drivers/emac.c
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@ -195,7 +195,7 @@ static rt_err_t lpc17xx_emac_init(rt_device_t dev)
for (tout = 1000; tout; tout--);
/* Wait for hardware reset to end. */
for (tout = 0; tout < 0x100000; tout++)
for (tout = 0; tout < 10000; tout++)
{
regv = read_PHY (PHY_REG_BMCR);
if (!(regv & 0x8000))
@ -204,46 +204,59 @@ static rt_err_t lpc17xx_emac_init(rt_device_t dev)
break;
}
}
if (tout >= 0x100000) return -RT_ERROR; /* reset failed */
if (tout >= 10000)
{
//return -RT_ERROR; /* reset failed */
rt_kprintf("\tPHY Read PHY_REG_BMSR,Reset timeout,tout: %d.\n",tout);
}
/* Check if this is a DP83848C PHY. */
id1 = read_PHY (PHY_REG_IDR1);
id2 = read_PHY (PHY_REG_IDR2);
if (((id1 << 16) | (id2 & 0xFFF0)) != DP83848C_ID)
return -RT_ERROR;
/* Configure the PHY device */
/* Configure the PHY device */
switch (lpc17xx_emac_device.phy_mode)
{
case EMAC_PHY_AUTO:
/* Use auto negotiation about the link speed. */
write_PHY (PHY_REG_BMCR, PHY_AUTO_NEG);
/* Wait to complete Auto_Negotiation. */
for (tout = 0; tout < 0x100000; tout++)
{
regv = read_PHY (PHY_REG_BMSR);
if (regv & 0x0020)
{
/* Auto negotiation Complete. */
break;
}
}
break;
case EMAC_PHY_10MBIT:
/* Connect at 10MBit */
write_PHY (PHY_REG_BMCR, PHY_FULLD_10M);
break;
case EMAC_PHY_100MBIT:
/* Connect at 100MBit */
write_PHY (PHY_REG_BMCR, PHY_FULLD_100M);
break;
// return -RT_ERROR;
rt_kprintf("\tPHY Read PHY_REG_IDRx,PHY chip isn't DP83848C,Chip ID is %d.\n",((id1 << 16) | (id2 & 0xFFF0)));
}
if (tout >= 0x100000) return -RT_ERROR; // auto_neg failed
else
{
/* Configure the PHY device */
/* Configure the PHY device */
switch (lpc17xx_emac_device.phy_mode)
{
case EMAC_PHY_AUTO:
/* Use auto negotiation about the link speed. */
write_PHY (PHY_REG_BMCR, PHY_AUTO_NEG);
/* Wait to complete Auto_Negotiation. */
for (tout = 0; tout < 200000; tout++)
{
regv = read_PHY (PHY_REG_BMSR);
if (regv & 0x0020)
{
/* Auto negotiation Complete. */
break;
}
}
if(tout >= 200000)
{
rt_kprintf("\tPHY Read PHY_REG_BMSR,Auto nego timeout,tout: %d.\n",tout);
}
break;
case EMAC_PHY_10MBIT:
/* Connect at 10MBit */
write_PHY (PHY_REG_BMCR, PHY_FULLD_10M);
break;
case EMAC_PHY_100MBIT:
/* Connect at 100MBit */
write_PHY (PHY_REG_BMCR, PHY_FULLD_100M);
break;
}
}
//if (tout >= 0x100000) return -RT_ERROR; // auto_neg failed
/* Check the link status. */
for (tout = 0; tout < 0x10000; tout++)
for (tout = 0; tout < 100; tout++)
{
regv = read_PHY (PHY_REG_STS);
if (regv & 0x0001)
@ -252,8 +265,11 @@ static rt_err_t lpc17xx_emac_init(rt_device_t dev)
break;
}
}
if (tout >= 0x10000) return -RT_ERROR;
if (tout >= 100)
{
//return -RT_ERROR;
rt_kprintf("\tPHY Read PHY_REG_BMSR,Link on timeout,tout: %d.\n",tout);
}
/* Configure Full/Half Duplex mode. */
if (regv & 0x0004)
{