MCSPI Performance 8 Bit

Table of Contents

• Introduction
• Supported Combinations
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This Master application demonstrates the data transfer in master mode with performance measurment.

• McSPI is configured in Tx Only mode with FIFO enabled for Tx.
• Word Length tested is 8 bits.
• SPI CLK Frequency used is 12 MHZ.
• Number of Words is 5.
• Data is transmitted on D0 pin.
• Data transmission is in polled mode.

To modify the example to use main domain SPI, refer Accessing main and wakeup domain peripherals from MCU domain

Supported Combinations

Parameter	Value
CPU + OS	mcu-r5fss0-0 freertos
	mcu-r5fss0-0 nortos
	wkup-r5fss0-0 freertos
Toolchain	ti-arm-clang
Boards	am62px-sk
Example folder	examples/drivers/mcspi/mcspi_performance_8bit

Steps to Run the Example

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

Attention

As the wake-up R5 is the device manager, it needs to be started by the SBL. So it can not be loaded through CCS. It should be flashed and booted through SBL.

• Refer Flash a Hello World example for flashing the application.

See Also

MCSPI

Sample Output

Shown below is a sample output when the application is run,

[MCSPI] Performance Example Started...
 
----------------------------------------------------------
McSPI Clock 50000000 Hz
----------------------------------------------------------
Data Width      Data Length     Transfer Time (micro sec)
8               5                2.40
----------------------------------------------------------
 
All tests have passed!!