4.1.3.1.9. CSL OSPI Example

This example application demonstrates the OSPI flash read and write. It has 2 variants -

  • For SOCs having OSPI flash like J721E : performs DAC mode non-DMA OSPI Flash Write followed by OSPI Flash read at 133MHz RCLK and 166MHz RCLK for various transfer sizes (16B/32B/64B/128B/256B/512B/1024B).

  • For SOCs having XSPI flash like J7200 : performs INDAC mode OSPI Flash Write followed by OSPI Flash read at 133MHz RCLK and 166MHz RCLK for various transfer sizes (16B/32B/64B/128B/256B/512B/1024B).

It also prints the throughput measurement of various size transfers. The application compares the destination buffer with the source buffer to verify if the transfers were successful.

4.1.3.1.9.1. Building OSPI example

To build the OSPI example app in PDK, use the following command:

$ make -s -j8 csl_ospi_flash_app BOARD=<BOARD> CORE=<CORE>

The example app binary file can be found at the following location:

<pdk>/packages/ti/binary/csl_ospi_flash_app/bin/<BOARD>/csl_ospi_flash_app_<CORE>_release.xer5f

This command will build the OSPI Flash example app (csl_ospi_flash_app) on baremetal. Adjust the command according to your specific requirements, such as selecting a different board or core if needed. By default, the release mode is built. You can specify build mode by adding BUILD_PROFILE=debug in the instruction.

4.1.3.1.9.2. Supported SOCs

  • j721e

  • j7200

  • j721s2

  • j784s4

4.1.3.1.9.3. Supported cores

  • mcu1_0

4.1.3.1.9.4. Hardware Connections

  • none

4.1.3.1.9.5. Running OSPI example

After building the example, follow the given steps to run the test:

  • Launch a CCS debug session, load and run csl_ospi_flash_app_<CORE>_release.xer5f binary file to the respective core for which the binary is built. Alternatively, the example application can be loaded using any other boot method such as MMC/SD.

  • Logs will be printed on the MCU UART port 1. Below is an example of the log when running csl_ospi_flash_app on J721E on mcu1_0 core:

    Binary: <pdk>/packages/ti/binary/csl_ospi_flash_app/bin/<BOARD>/csl_ospi_flash_app_<CORE>_release.xer5f

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    Time taken to read GTC Timer ticks = 555 ns (111 ticks)
OSPI RCLK running at 133333333 Hz.


OSPI flash test DAC at 133MHz RCLK - Read/Write 16 Bytes

OSPI Write 16 bytes complete.  Config Time:    279498315 ns    Transaction Time:       168550 ns
OSPI Read 16 bytes complete.   Config Time:    365800655 ns    Transaction Time:       780 ns

OSPI flash test DAC at 133MHz RCLK - Read/Write 16 Bytes have passed

OSPI RCLK running at 166666666 Hz.


OSPI flash test DAC at 166MHz RCLK - Read/Write 16 Bytes

OSPI Write 16 bytes complete.  Config Time:    277898735 ns    Transaction Time:       168390 ns
OSPI Read 16 bytes complete.   Config Time:    364196800 ns    Transaction Time:       1165 ns

OSPI flash test DAC at 166MHz RCLK - Read/Write 16 Bytes have passed

OSPI RCLK running at 133333333 Hz.


OSPI flash test DAC at 133MHz RCLK - Read/Write 32 Bytes

OSPI Write 32 bytes complete.  Config Time:    279346245 ns    Transaction Time:       333375 ns
OSPI Read 32 bytes complete.   Config Time:    365808390 ns    Transaction Time:       1400 ns

OSPI flash test DAC at 133MHz RCLK - Read/Write 32 Bytes have passed

OSPI RCLK running at 166666666 Hz.


OSPI flash test DAC at 166MHz RCLK - Read/Write 32 Bytes

OSPI Write 32 bytes complete.  Config Time:    279746405 ns    Transaction Time:       333275 ns
OSPI Read 32 bytes complete.   Config Time:    366209350 ns    Transaction Time:       2290 ns

OSPI flash test DAC at 166MHz RCLK - Read/Write 32 Bytes have passed

OSPI RCLK running at 133333333 Hz.


OSPI flash test DAC at 133MHz RCLK - Read/Write 64 Bytes

OSPI Write 64 bytes complete.  Config Time:    279424255 ns    Transaction Time:       666230 ns
OSPI Read 64 bytes complete.   Config Time:    366219100 ns    Transaction Time:       2650 ns

OSPI flash test DAC at 133MHz RCLK - Read/Write 64 Bytes have passed

OSPI RCLK running at 166666666 Hz.


OSPI flash test DAC at 166MHz RCLK - Read/Write 64 Bytes

OSPI Write 64 bytes complete.  Config Time:    277880035 ns    Transaction Time:       666165 ns
OSPI Read 64 bytes complete.   Config Time:    364675435 ns    Transaction Time:       4565 ns

OSPI flash test DAC at 166MHz RCLK - Read/Write 64 Bytes have passed

OSPI RCLK running at 133333333 Hz.


OSPI flash test DAC at 133MHz RCLK - Read/Write 128 Bytes

OSPI Write 128 bytes complete. Config Time:    280029480 ns    Transaction Time:       1327965 ns
OSPI Read 128 bytes complete.  Config Time:    369488735 ns    Transaction Time:       5190 ns

OSPI flash test DAC at 133MHz RCLK - Read/Write 128 Bytes have passed

OSPI RCLK running at 166666666 Hz.


OSPI flash test DAC at 166MHz RCLK - Read/Write 128 Bytes

OSPI Write 128 bytes complete. Config Time:    280599770 ns    Transaction Time:       1332330 ns
OSPI Read 128 bytes complete.  Config Time:    370064675 ns    Transaction Time:       9085 ns

OSPI flash test DAC at 166MHz RCLK - Read/Write 128 Bytes have passed

OSPI RCLK running at 133333333 Hz.


OSPI flash test DAC at 133MHz RCLK - Read/Write 256 Bytes

OSPI Write 256 bytes complete. Config Time:    280312505 ns    Transaction Time:       2664130 ns
OSPI Read 256 bytes complete.  Config Time:    371108600 ns    Transaction Time:       10630 ns

OSPI flash test DAC at 133MHz RCLK - Read/Write 256 Bytes have passed

OSPI RCLK running at 166666666 Hz.


OSPI flash test DAC at 166MHz RCLK - Read/Write 256 Bytes

OSPI Write 256 bytes complete. Config Time:    280264245 ns    Transaction Time:       2664095 ns
OSPI Read 256 bytes complete.  Config Time:    371059990 ns    Transaction Time:       18410 ns

OSPI flash test DAC at 166MHz RCLK - Read/Write 256 Bytes have passed

OSPI RCLK running at 133333333 Hz.


OSPI flash test DAC at 133MHz RCLK - Read/Write 512 Bytes

OSPI Write 512 bytes complete. Config Time:    279870880 ns    Transaction Time:       5327885 ns
OSPI Read 512 bytes complete.  Config Time:    373329495 ns    Transaction Time:       20715 ns

OSPI flash test DAC at 133MHz RCLK - Read/Write 512 Bytes have passed

OSPI RCLK running at 166666666 Hz.


OSPI flash test DAC at 166MHz RCLK - Read/Write 512 Bytes

OSPI Write 512 bytes complete. Config Time:    279086685 ns    Transaction Time:       5327900 ns
OSPI Read 512 bytes complete.  Config Time:    372547445 ns    Transaction Time:       36470 ns

OSPI flash test DAC at 166MHz RCLK - Read/Write 512 Bytes have passed

OSPI RCLK running at 133333333 Hz.


OSPI flash test DAC at 133MHz RCLK - Read/Write 1024 Bytes

OSPI Write 1024 bytes complete.        Config Time:    281470005 ns    Transaction Time:       10656590 ns
OSPI Read 1024 bytes complete. Config Time:    382262085 ns    Transaction Time:       40880 ns

OSPI flash test DAC at 133MHz RCLK - Read/Write 1024 Bytes have passed

OSPI RCLK running at 166666666 Hz.


OSPI flash test DAC at 166MHz RCLK - Read/Write 1024 Bytes

OSPI Write 1024 bytes complete.        Config Time:    281680235 ns    Transaction Time:       10655530 ns
OSPI Read 1024 bytes complete. Config Time:    382469995 ns    Transaction Time:       72260 ns

OSPI flash test DAC at 166MHz RCLK - Read/Write 1024 Bytes have passed

All tests have passed.
Done