MCASP Early Chime

Table of Contents

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

Introduction

This example demonstrates early audio chime from stage 2 sbl with DM. A headset needs to be connected to the audio jack on am62px-sk for hearing the audio.

• Mcasp is configured in I2S mode
• Audio chime is played on both channels (Left and Right)

The example integrates bootloading funtionality with SBL on OSPI bootmedia. It also integrates Device manager functionality. The SBL stage 2 thread boots all the cores along with HLOS like Linux. Refer SBL Booting Linux From OSPI for boot flow sequence.

Supported Combinations

Parameter	Value
CPU + OS	wkup-r5fss0-0 freertos
Toolchain	ti-arm-clang
Board	am62px-sk
Example folder	examples/drivers/mcasp/mcasp_early_chime

Steps to Run the Example

• This example integrates SBL on OSPI bootmedia which needs to be flashed on the EVM flash, along with sample application images for MCU R5 CPUs, HSM M4F and Linux Appimage.
• For HS-FS device, use default_sbl_ospi_linux_hs_fs.cfg as the cfg file.
• Update the wkup-r5 image in the flash config with mcasp_early_chime image.

    # 2nd stage bootloader with DM is flashed at 0x80000 or to whatever offset your bootloader is configured for
    --file=../../examples/drivers/mcasp/mcasp_early_chime/am62px-sk/wkup-r5fss0-0_freertos/ti-arm-clang/mcasp_early_chime.release.appimage.hs_fs --operation=flash --flash-offset=0x80000

• To flash to the EVM, refer to Flash a Hello World example .
• Example, assuming SDK is installed at C:/ti/mcu_plus_sdk and this example and IPC application is built using makefiles, and Linux Appimage is already created, in Windows,

      cd C:/ti/mcu_plus_sdk/tools/boot
      python uart_uniflash.py -p COM13 --cfg=C:/ti/mcu_plus_sdk/tools/boot/sbl_prebuilt/am62px-sk/default_sbl_ospi_linux_hs_fs.cfg
  

• If Linux PC is used, assuming SDK is installed at ~/ti/mcu_plus_sdk

    cd ~/ti/mcu_plus_sdk
    python uart_uniflash.py -p /dev/ttyUSB0 --cfg=~/ti/mcu_plus_sdk/tools/boot/sbl_prebuilt/am62px-sk/default_sbl_ospi_linux_hs_fs.cfg
  

• Switch to OSPI NOR BOOT MODE and power on the EVM.

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.

See Also

MCASP

Sample Output

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

Starting Chime
Chime completed