I found an old link where Paul S confirmed that RMII can be implemented on the MicroModTeensy.
Most of this was already setup in the uTasker kinetis_ENET.h
I needed to add a #define ENET2_REF_CLK2_ON_EMC
I added a new #define ENET2_ON_MICROMOD (copy/pasted from the default)[/img]
#elif defined ENET2_ON_MICROMOD
_CONFIG_PERIPHERAL(GPIO_B0_12, ENET2_TDATA00, (PORT_DSE_MID | PORT_SRE_FAST)); // ENET2_TDATA00 on GPIO2-12 (alt. function 8)
_CONFIG_PERIPHERAL(GPIO_EMC_31, ENET2_TDATA01, (PORT_DSE_MID | PORT_SRE_FAST)); // ENET2_TDATA01 on GPIO4-31 (alt. function 8)
_CONFIG_PERIPHERAL(GPIO_EMC_32, ENET2_TX_EN, (PORT_DSE_MID | PORT_SRE_FAST)); //
IOMUXC_ENET2_IPP_IND_MAC0_RXDATA_SELECT_INPUT_0 = IOMUXC_ENET2_IPP_IND_MAC0_RXDATA_SELECT_INPUT_0_GPIO_SD_B0_03_ALT8;
_CONFIG_PERIPHERAL(GPIO_SD_B0_03, ENET2_RDATA00, 0); // ENET2_RX_DATA00 on GPIO2-20 (alt. function 8)
IOMUXC_ENET2_IPP_IND_MAC0_RXDATA_SELECT_INPUT_1 = IOMUXC_ENET2_IPP_IND_MAC0_RXDATA_SELECT_INPUT_1_GPIO_SD_B0_04_ALT8;
_CONFIG_PERIPHERAL(GPIO_SD_B0_04, ENET2_RDATA01, 0); // ENET2_RX_DATA01 on GPIO2-21 (alt. function 8)
IOMUXC_ENET2_IPP_IND_MAC0_RXERR_SELECT_INPUT = IOMUXC_ENET2_IPP_IND_MAC0_RXERR_SELECT_INPUT_GPIO_B1_00_ALT8; // special case to select the pad involved in daisy chain
_CONFIG_PERIPHERAL(GPIO_B1_00, ENET2_RX_ER, 0); // ENET2_RX_ER on GPIO2-16 (alt. function 8)
The simulator shows the correct peripheral configuration when I define IP_ETHERNET_INTERFACE_COUNT 2
Also created:
#define ETHERNET_COUNT 2 // because of 2 ETH_CONTROLLERS
#define ENET2_REF_CLK2_ON_SD
#define ENET2_ON_MICROMOD
Unfortunately, something is miss-configured because the simulator is showing a red connect light, and ping, nor http is working now that I have made modifications from the original TEENSY4.1 I'm guessing this is probably nothing more than a #define mistake somewhere, I haven't added any code yet.
I attached a bmp of the simulator showing the peripheral configuration while running
