This example demonstrates the McSPI RX and TX operation configured in Turbo mode.
Turbo mode improves the throughput of the MCSPI interface when a single channel is enabled by allowing transfers until the shift register and the MCSPI_RX_0/1/2/3 register are full. Turbo mode is time saving when a transfer exceeds two words. When several channels are enabled, the TURBO bit has no effect.
This example sends a known data in the TX mode of length APP_MCSPI_MSGSIZE and then receives the same in RX mode. Internal pad level loopback mode is enabled to receive data.To enable internal pad level loopback mode, D0 pin is configured to both TX Enable as well as RX input pin in the SYSCFG.
When transfer is completed, TX and RX buffer data are compared. If data is matched, test result is passed otherwise failed.
Parameter | Value |
---|---|
CPU + OS | r5fss0-0 freertos |
r5fss0-0 nortos | |
Toolchain | ti-arm-clang |
Boards | am263x-cc, am263x-lp |
Example folder | examples/drivers/mcspi/mcspi_loopback_turbo_mode |
Shown below is a sample output when the application is run,