MCSPI Loopback

Table of Contents

• Introduction
• Supported Combinations
• Using SDK with SysConfig
• Steps to Run the Example
• See Also
• Sample Output

Introduction

This example demonstrates the McSPI RX and TX operation configured in blocking, interrupt mode of operation.

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, MISO 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.

Supported Combinations

Parameter	Value
CPU + OS	m4fss0-0 freertos
	m4fss0-0 nortos
Toolchain	ti-arm-clang
Board	xWRL6432-evm
Example folder	examples/drivers/mcspi/mcspi_loopback

Using SDK with SysConfig

A GUI tool SysConfig is used to configure different modules and peripherals of the example. Using this tool, users can select and customize different modules and peripherals. The SysConfig tool will generate the code for initializing and configuring these modules. This configuration is saved to a file called example.syscfg for every example. To know more about how to use SDK with SysConfig, Visit this page

Using SDK with SysConfig

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

See Also

MCSPI

Sample Output

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

[Cortex_M4_0] [MCSPI] Loopback example started ...
----------------------------------------------------------
McSPI Clock 1000000 Hz
----------------------------------------------------------
Data Width  Data Length     Transfer Time (micro sec)
8       128     1147.50
----------------------------------------------------------
 
All tests have passed!!