An awaited and awesome appnote is here!

Link : http://www.cypress.com/?rID=57561

Enjoy the power of the PSoC! :-)

 This App Note can be used as a starting point to get started with USB Bootloader. The source code for a stand-alone GUI is avalable with this App Note. Take this source code and modify it to suit your needs. Note that this GUI is for windows only. On similar lines, application for Linux and MAC OSX can be developed. 

Post your suggestions and improvements here, which will be incorporated in the next revision of the GUI. If any other help is required as far as the tool is concerned, post it here.

AN73503 - USB Bootlader is wonderful and very very useful.

Thanks for Cypress.

Now I tested the AN73503 Bootloader Host(C# application) to program the firmware to my device.

It works very well.

But the writting time is somewhat long about 2 minutes.

For comparison, the same firmware is written to my device using "PSoC Creator Bootloader Host Program" It was very fast about only 5 second to finish writting.

Is the any method to shorten the writting time using AN73505 USB Bootloader Host ?

ps. My PC OS is Windows XP 32bit.

Hello which device are you trying to porgram ? PSoC3 or PSoC5. waht is the size of the flash. You can reduce the write time modifying a parameter in the source code. Are you familiar with C# coding ?

Thanks  U2,

My Device is psoc3 CY8C3446. 

flash size is 106kbyte. ( = *.cyacd file size)

I checked the source file(Delegated_Functions.cs)  included AN73503. 

I found the "Sleep(100)" in the WriteData() method.

/* We neeed this delay for Bootload operation to be successsful */
                System.Threading.Thread.Sleep(100); 

May be this is time consumming routine. 100 msec is very long.

I want to shorten this time.

However, I  wonder  if I shorten this time about 1ms make some trouble to write flash.

It is very helpful if I know delay time of  "PSoC Creator Bootloader Host Program". I wil set the same time delay.

CEO, that is the delay I am talking about. That delay is required in order to get a response from PSoC once you send a bootloader command to it. You can go to delays as low as 40ms. This number is as per my test results. You can continue lowering this vlaue until the point where your bootload process does not fail.

I am currently working on an SD-card based USB-bootloader and a multi-protocol bootloader

SD Card based bootloader is in essence like a regular USB HID bootloader,but if an SD card is present,it will load a .cycad file from there instead,and bootload "itself".

Multi-protocol is just a regular bootloader,which presents a menu(on a uart terminal) on power-on,allowing you to select the communication protocol that can be used for bootloading.. USB/I2C/SPI/SdCard...

Both of these are work in progress things,which is currently on pause since I lost my Harddisk,and lost the code too(backup..backup..backup!).. I'll post updates and more as soon as I get it back from warranty replacement..