BELK-TN-007: FreeRTOS on single-core Bora Lite SoM

Info Box Applies to Bora Applies to BORA Xpress Applies to BORA Lite

This technical note was validated against specific versions of hardware and software. What is described here may not work with other versions.

History

Version	Date	Notes
1.0.0	February 2020	First public release

Introduction

As knows, Bora Lite SoM is suited for compact, cost-sensitive applications. As such, it is often equipped with XC7Z007 or XC7Z014 SoC's, which implement single-core processors. When using a single core

Testbed

U-Boot SPL 2017.01-belk-4.1.1 (Jan 08 2020 - 16:46:11)
mmc boot
Trying to boot from MMC1
reading fpga.bit
spl_load_image_fat: error reading image fpga.bit, err - -1
spl: error reading image fpga.bit, err - 1
reading u-boot.img
reading u-boot.img


U-Boot 2017.01-belk-4.1.1 (Jan 08 2020 - 16:46:11 +0100), Build: belk-4.1.1

Model: Bora
Board: Xilinx Zynq
I2C:   ready
DRAM:  ECC disabled 1 GiB
Relocating to 3ff14000, new gd at 3ead3ee8, sp at 3ead3ec0
NAND:  1024 MiB
MMC:   sdhci@e0100000: 0 (SD)
reading bora.env
In:    serial@e0001000
Out:   serial@e0001000
Err:   serial@e0001000
Model: Bora
Board: Xilinx Zynq
SF: Detected is25lp128 with page size 256 Bytes, erase size 64 KiB, total 32 MiB
SOM ConfigID CRC mismatch for 0xff0101ff (was 0xffffffff, expected 0xca9a6d16) at block 2 (offset 96): using default
SF: Detected is25lp128 with page size 256 Bytes, erase size 64 KiB, total 32 MiB
SOM UniqueID not found, using default
SOM ConfigID#: ffffffff
SOM UniqueID#: ffffffff:ffffffff
ds2431_readmem(): error in chip reset
ds2431_readmem(): error in reading buffer
ds2431_readmem(): error in chip reset
ds2431_readmem(): error in reading buffer
CB ConfigID CRC mismatch for 0x00000000 (was 0x00000000, expected 0x2144df1c) at block 3 (offset 96): using default
CB ConfigID#: ffffffff
CB UniqueID#: 00000000:00000000
Net:   ZYNQ GEM: e000b000, phyaddr 7, interface rgmii-id
eth0: ethernet@e000b000
Bora>

Running the application

Hello from Freertos example main
Rx task received string from Tx task: Hello World
Rx task received string from Tx task: Hello World
Rx task received string from Tx task: Hello World
Rx task received string from Tx task: Hello World
Rx task received string from Tx task: Hello World
Rx task received string from Tx task: Hello World