DDR ECC Test MCU ESM

Introduction

This example generates 1b and 2b ECC error for DDR. The M4 enables the ESM instances (MAIN ESM0 and MCU ESM0). On generating an ECC error, the M4 receives the interrupt from MCU ESM (through the MAIN ESM error signal output routed to the MCU ESM). On receiving the interrupt, the handler clears the corresponding ECC error bit and restore the original value. If the interrupt is not received the test fails.

Supported Combinations

Parameter	Value
CPU + OS	m4fss0-0 nortos
Toolchain	ti-arm-clang
Board	am62x-sk, am62x-sk-lp, am62x-sip-sk
Example folder	examples/drivers/ddr/ddr_ecc_test_mcu_esm/

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)
• By default DDR inline ECC is configured in the sysconfig of SBL NULL bootloader.
• Flash SBL NULL bootloader by following steps mentioned in Flash SOC Initialization Binary
• Switch to OSPI NOR BOOT MODE and power on the EVM.
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

Note

DDR inline ECC can be configured in the sysconfig of other SBLs as well. If you are configuring ECC for different address region, change the DDR_ECC_REGION0_START macro in the example file for testing.

See Also

DDR

Sample Output

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

Waiting on Single bit Error Correction Interrupt...
1b ECC error detected
Waiting on Dual bit error detection Interrupt...
2b ECC error detected
All tests have passed!!