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Dear team:
After my customer set up the mapping according to the instructions in the above post, he checked that the 1.2V of the PHY chip can be output normally, and the 50MHz crystal oscillator can also be output to the development board normally, but connecting to the computer will display: unrecognized network, Ping unsuccessful, Ping: transmission failed. General failture;
Add a breakpoint in the transmission / reception interrupt, and it is found that there is no transmission / reception interrupt;
PHY RESET is pulled up.
Software
initialization of GPIO
Mac part:
Compared with the mii program in the routine, rmii only changes the following in the phymode Ethernet_init(pucMACArray) function:
\\ initInterfaceConfig.phyMode = ETHERNET_SS_PHY_INTF_SEL_MII;
to:
initInterfaceConfig.phyMode = ETHERNET_SS_PHY_INTF_SEL_RMII;
Where could this problem be?
Best regards,
Green
Otherwise, customer wonder whether this question is related to MDIO and MCLK of EMAC?
The MDC clock described in MAC_MDIO_Address register is about 1.0~2.5MHZ:
Should the clock signal on the MDC pin be a continuous periodic signal?
The customer tests his program, as long as the clock signal can be measured on the MDC pin when the read and write PHY registers are initialized, and then there is no signal (continuously low).
In addition, he found a related post, which describes that when MII and RMII are enabled in the PINMUX window, MDIO and MCLK are not selected. They must be selected manually.
