I have a K10 144 pin, 100Mhz design and I'm running into problems getting UART3 up and running properly
I have the clock gated to PORTE
SIM_SCGC5|= SIM_SCGC5_PORTE_MASK; // to get Port E Clock enabled
and I have the clock gated over to PORTE
SIM_SCGC4 |= SIM_SCGC4_UART3_MASK; // to get clock to the UART
And I have selected alternate function 3 for the RX and TX pins
PORTE_PCR24 = PORT_PCR_MUX(3);
PORTE_PCR25 = PORT_PCR_MUX(3);
I'm enabling UART3's IRQ (status vector)
and I have the ISR function loaded into vector 67 in the vector table
I have UART 3 setup like this (I'm looking for 9600 baud, N,8,1)
Just to double check things I have the UART RX and TX lines jumpered together on the output connector of my board so I should (in theory) see the data back on the receive buffer every time I transmit
But I'm never seeing any data on the TX pin and obviously not seeing the Receive Pin IRQ for getting any data back.
What am I missing?
Thanks for the help