Bool xMACBInit( volatile avr32_macb_t * macb )
{
volatile unsigned long status;
// set up registers
macb->ncr = 0;
macb->tsr = ~0UL;
macb->rsr = ~0UL;
macb->idr = ~0UL;
status = macb->isr;
#if ETHERNET_CONF_USE_RMII_INTERFACE
// RMII used, set 0 to the USRIO Register
macb->usrio &= ~AVR32_MACB_RMII_MASK;
#else
// RMII not used, set 1 to the USRIO Register
macb->usrio |= AVR32_MACB_RMII_MASK;
#endif
// Load our MAC address into the MACB.
prvSetupMACAddress(macb);
// Setup the buffers and descriptors.
prvSetupDescriptors(macb);
#if ETHERNET_CONF_SYSTEM_CLOCK <= 20000000
macb->ncfgr |= (AVR32_MACB_NCFGR_CLK_DIV8 << AVR32_MACB_NCFGR_CLK_OFFSET);
#elif ETHERNET_CONF_SYSTEM_CLOCK <= 40000000
macb->ncfgr |= (AVR32_MACB_NCFGR_CLK_DIV16 << AVR32_MACB_NCFGR_CLK_OFFSET);
#elif ETHERNET_CONF_SYSTEM_CLOCK <= 80000000
macb->ncfgr |= AVR32_MACB_NCFGR_CLK_DIV32 << AVR32_MACB_NCFGR_CLK_OFFSET;
#elif ETHERNET_CONF_SYSTEM_CLOCK <= 160000000
macb->ncfgr |= AVR32_MACB_NCFGR_CLK_DIV64 << AVR32_MACB_NCFGR_CLK_OFFSET;
#else
# error System clock too fast
#endif
// Are we connected?
if( prvProbePHY(macb) == TRUE )
{
// Enable the interrupt!
portENTER_CRITICAL();
{
prvSetupMACBInterrupt(macb);
}
portEXIT_CRITICAL();
// Enable Rx and Tx, plus the stats register.
macb->ncr = AVR32_MACB_NCR_TE_MASK | AVR32_MACB_NCR_RE_MASK;
return (TRUE);
}
return (FALSE);
}
bool xMACBInit(volatile avr32_macb_t *macb)
{
bool global_interrupt_enabled = Is_global_interrupt_enabled();
volatile unsigned long status;
// generate an hardware reset of the phy
ethernet_phy_hw_reset();
// generate a software reset of the phy
ethernet_phy_sw_reset(macb);
// set up registers
macb->ncr = 0;
macb->tsr = ~0UL;
macb->rsr = ~0UL;
if (global_interrupt_enabled) Disable_global_interrupt();
macb->idr = ~0UL;
status = macb->isr;
if (global_interrupt_enabled) Enable_global_interrupt();
#if ETHERNET_CONF_USE_RMII_INTERFACE
// RMII used, set 0 to the USRIO Register
macb->usrio &= ~AVR32_MACB_RMII_MASK;
#else
// RMII not used, set 1 to the USRIO Register
macb->usrio |= AVR32_MACB_RMII_MASK;
#endif
// Load our MAC address into the MACB.
prvSetupMACAddress(macb);
// Setup the buffers and descriptors.
prvSetupDescriptors(macb);
#if ETHERNET_CONF_SYSTEM_CLOCK <= 20000000
macb->ncfgr |= (AVR32_MACB_NCFGR_CLK_DIV8 << AVR32_MACB_NCFGR_CLK_OFFSET);
#elif ETHERNET_CONF_SYSTEM_CLOCK <= 40000000
macb->ncfgr |= (AVR32_MACB_NCFGR_CLK_DIV16 << AVR32_MACB_NCFGR_CLK_OFFSET);
#elif ETHERNET_CONF_SYSTEM_CLOCK <= 80000000
macb->ncfgr |= AVR32_MACB_NCFGR_CLK_DIV32 << AVR32_MACB_NCFGR_CLK_OFFSET;
#elif ETHERNET_CONF_SYSTEM_CLOCK <= 160000000
macb->ncfgr |= AVR32_MACB_NCFGR_CLK_DIV64 << AVR32_MACB_NCFGR_CLK_OFFSET;
#else
# error System clock too fast
#endif
// Are we connected?
if( prvProbePHY(macb) == true )
{
// Enable the interrupt!
portENTER_CRITICAL();
{
prvSetupMACBInterrupt(macb);
}
portEXIT_CRITICAL();
// Enable Rx and Tx, plus the stats register.
macb->ncr = AVR32_MACB_NCR_TE_MASK | AVR32_MACB_NCR_RE_MASK;
return (true);
}
return (false);
}
