Hi,
Is there a SPI or UART Chip Support Library for the C6678? I only see one for the GPIO.
Will
No, there isn't. But there are two platforms files that I think you can check as example of use of SPI and UART (evmc66x_spi.c and evmc66x_uart.c), they're located in ...\pdk_C6678_1_0_0_21\packages\ti\platform\evmc6678l\platform_lib\src
Take a look and see if they are what you're looking for.
Regards