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The Creator Ci40 platform, available from RS and Mouser, is designed to allow developers to easily create connected projects. For more projects, documentation and open-source code for the Creator Ci40 check out www.creatordev.io
This project looks at how to connect a SPI flash programmer to the Creator Ci40 in order to directly program the boot loader image.
Though this operation is typically done via the cXT200 SoC on the board, this is a handy alternate that can prove useful during development. It is also very useful to know that the Creator Ci40 board supports a dual partitioned Flash for over-the-air updates and roll-back capability.
Specifically in this project we’re going to show how to connect the Dediprog SF100 serial programmer to the Creator Ci40, which will then allow direct programming of the flash on the Creator Ci40 development board.
If you'd like to know more about the Dediprog SF100, check out the link below.
http://www.dediprog.com/pd/spi-flash-solution/SF100
Other programmers which support the NOR Flash IC type on the Creator Ci40 could also be used. The interconnection lead to the Creator Ci40 may need adjusting as appropriate for any specific programmer.
Creator Ci40 NOR Flash details:Manufacturer...................................Winbond
Part Numbers..................................W25Q16DVSNIG or W25Q16JVSNIQ
Density.............................................16Mb
NOR Flash ImagesThe NOR flash u-boot images are available for download from:
https://github.com/CreatorDev/u-boot/releases
On the Creator Ci40 the cXT200 processor boots from NOR flash connected to the cXT200 SPI Master1 port. Access to this port is provided via CN21 for the purpose of programming the NOR flash.
The Creator Ci40 must be powered when programming the NOR flash. To prevent the cXT200 processor booting and simultaneously accessing the NOR flash whilst programming via the serial programmer, the Creator Ci40 should be held in reset.
Holding Reset lowThe Creator Ci40 can be held in reset by connecting the SYS_RESET# pin on CN21 to GND in the programming lead.
It is recommended that a low value resistor is used to prevent damage to the Ci40 board. We used a 100 ohms resistor in this example
CN21 is a 6 pin (2 row x 3 pin), 0.1” (2.54mm) pitch header, part Harwin M20-9760346, and a variety of connectors will mate with it. Individual jumper cables can also be used
Building the SF100 to Ci40 programming lead(Note the resistor in the cable)
The circuit of the SF100 to Creator Ci40 programming lead is shown below:
Programming Lead - Bill of Materials
SF100 mating connector.............................Harwin M20-1070700
Ci40 mating connector................................Harwin M20-1070300
Crimp terminal..............................................Harwin M20-1180046
Wire..................................................................7/0.2mm
Resistor R1......................................................100R 1/4W axial
Locating CN21Access to the Flash is via CN21
With your connector lead and CN21 location in hand you are now ready to directly flash the Creator Ci40 flash.
SF100 programmer connected to the Creator Ci40 board:
Pete Money
Paul Evans
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