I2C Peripheral Transfer LLD

Table of Contents

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

Introduction

This example shows Master Peripheral Communication between Two I2C instances using LLD interface.

One of the core is in control of the I2C Master instance and the other core is in control of the I2C Peripheral instance.

The main core in in control of the Master I2C Instance. The remote cores in in control of the Peripheral I2C Instance.

Three transactions are carried out in this example:

1. Controller writes 4 bytes to Peripheral
2. Controller writes 2 bytes to Peripheral
3. Controller reads 2 bytes from Peripheral

Attention

This Example requires two I2C instances to be connected together.

SCL and SDA pins of I2C1 and I2C3 are available on the LP board. I2C1 can be connected to I2C3 with following jumper Connections.

• Connect Pin 9 of J1 (I2C1_SCL) to Pin 49 of J5 (I2C3_SCL).
• Connect Pin 10 of J1 (I2C1_SDA) to Pin 50 of J5 (I2C3_SDA).

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 nortos

^ | Toolchain | ti-arm-clang Boards | am263x-lp Example folder | examples/drivers/i2c/i2c_peripheral_transfer_lld

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

I2C

Sample Output

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

[I2C] I2C Controller Peripheral Transaction Started ... !!!
[I2C Peripheral] Transaction 1: Ready (receive 4)...
[I2C Controller] Transaction 1: Start (write 4)...
[I2C Controller] Transmitted Data 1 2 3 4 !!!
[I2C Peripheral] Received Data 1 2 3 4 !!!
[I2C Peripheral] Transaction 2: Ready (receive 2)...
[I2C Controller] Transaction 2: Start (write 2)...
[I2C Controller] Transmitted Data 1 2 !!!
[I2C Peripheral] Received Data 1 2 !!!
[I2C Peripheral] Transaction 3: Ready (send 2)...
[I2C Controller] Transaction 3: Start (read 2)...
[I2C Controller] Received Data 5 6 !!!
[I2C Peripheral] Transmitted Data 5 6 !!!
 
[I2C] All 3 transactions completed successfully!!!
All tests have passed!!