Electrosmith Daisy Seed

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Electrosmith Daisy Seed

This article describes specifics for the Electrosmith Daisy Seed evaluation board. The board contains the ST STM32H750IBK6 chip and has an ISSI IS25LP064 64 MBit SPI flash.

QSPI Flash Programming Support

Before continuing with this article, please read the generic article about QSPI flash programming support on STM32H7 devices (STM32H7 (Q)SPI support).

Example implementation

As described in the generic article, the reference flash algorithm is based on the SEGGER Open Flashloader and therefore needs to be added manually using a JLinkDevices.xml file. An example JLinkDevices.xml file as well as pinout used on the Daisy Seed board, is given below. For further information regarding the Open Flashloader and how to use the JLinkDevices.xml file, please refer to the J-Link User Manual (UM08001), chapter 10 Open Flash Loader.

Quad-SPI Interface Pins

The Electrosmith Daisy Seed uses the following port pins to interface the (Q)SPI flash.

Alternate function Port / Pin
QSPI_CLK PF10
QSPI_CS PG6
QSPI_BK1_D0 PF8
QSPI_BK1_D1 PF9
QSPI_BK1_D2 PF7
QSPI_BK1_D3 PF6

JLinkDevices.xml

<Database>
 <Device>
  <ChipInfo Vendor="ST" Name="STM32H750IB_DaisySeed" Core="JLINK_CORE_CORTEX_M7" WorkRAMAddr="0x24000000" WorkRAMSize="0x00080000"/>
  <FlashBankInfo Name="QSPI Flash" BaseAddr="0x90000000" MaxSize="0x04000000" Loader="Devices/ElectroSmith/DaisySeed_Flashloader.elf" LoaderType="FLASH_ALGO_TYPE_OPEN" />
 </Device>
</Database>

For further information how to include this flashloader into your J-Link software, please refer to:
https://wiki.segger.com/Adding_Support_for_New_Devices#Using_a_Precompiled_Flashloader

Flash algorithm (*.elf)

This file contains the program routines used by the J-Link DLL during flash programming for single SPI flash using the above described pins.