I2C Read

Table of Contents

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

Introduction

This example demonstrates reading data from I2C based EEPROM devices present in the board. Application reads 20 samples from the EEPROM and exits.

Attention

For SK-AM62, Board ID EEPROM address is 0x51u.

SCL and SDA pins of MCU_I2C0 are available at the MCU_HEADER in the board. MCU_I2C0 can be connected to Board ID EEPROM through making the following jumper connections as shown in the image.

• Connect Pin 21 of J9 (MCU_I2C0_SDA) to Pin 27 of J3.
• Connect Pin 24 of J9 (MCU_I2C0_SCL) to Pin 28 of J3.

JUMPER CONNECTIONS FOR I2C

To modify the example to use main/wakeup domain I2C, refer Accessing main and wakeup domain peripherals from MCU domain

Supported Combinations

Parameter	Value
CPU + OS	m4fss0-0 nortos
	r5fss0-0 freertos
	a53ss0-0 freertos
Toolchain	ti-arm-clang
	arm.gnu.aarch64-none
Board	am62x-sk, am62x-sk-lp, am62x-sip-sk
Example folder	examples/drivers/i2c/i2c_read

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 an example application for flashing the application.

See Also

I2C

Sample Output

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

[I2C] Read data ... !!!
[I2C] Sample 0: 255
[I2C] Sample 1: 255
[I2C] Sample 2: 255
[I2C] Sample 3: 255
[I2C] Sample 4: 255
[I2C] Sample 5: 255
[I2C] Sample 6: 255
[I2C] Sample 7: 255
[I2C] Sample 8: 255
[I2C] Sample 9: 255
[I2C] Sample 10: 255
[I2C] Sample 11: 255
[I2C] Sample 12: 255
[I2C] Sample 13: 255
[I2C] Sample 14: 255
[I2C] Sample 15: 255
[I2C] Sample 16: 255
[I2C] Sample 17: 255
[I2C] Sample 18: 255
[I2C] Sample 19: 255
[I2C] Read data ... DONE !!!All tests have passed!!