PICkit3线路公布，大家可以DIY了(附固件）

cadiy

http://ww1.microchip.com/downloads/en/DeviceDoc/PICkit_3_User_Guide_51795A.pdf

[ 本帖最后由 cadiy 于 2009-4-22 19:52 编辑 ]

莫名其妙

还需要内部的程序啊

FunnyNYPD

PICkit 3 will be another open-source programmer just like the PICkit 2.

AMY_BOX

我看了 ，估计成本很高啊 ！上面有个主控芯片不知道好不好买

莫名其妙

PCB

FunnyNYPD

Due to its native 3.3V PIC24 micro, it needs some level shift circuit for +5V PICs.
This bottleneck post some performance and cost limit to PICKit 3 design.
It claims 512K SPI Flash for Programming parameter and hex file. I am curious what SPI Flash chip is used? Are the two on the schematic the same type or different type?

莫名其妙

目标板电源应该和kit3本身无关吧。上面图是microchip出品的kit3，和原理图一致

FunnyNYPD

"Due to its native 3.3V PIC24 micro, it needs some level shift circuit for +5V PICs.
This bottleneck post some performance and cost limit to PICKit 3 design."

This is for the PICkit 3 design itself, not for external circuits. It needs bunch of Level shift circuit just get different external Vdd covered.

The schematic doesn't clarify the SPI memory (U3, U4) parameters, e.g. product model, memory size, manufacturer, etc.

莫名其妙

25LC256或者25DF041A，microchip有这类SPI flash

FunnyNYPD

I knew Microchip has spi EEPROM for upto 1M bit (128K bytes), not aware it also carries SPI Flash memory. Do you have a specific link?

FunnyNYPD

原帖由 莫名其妙 于 2009-4-10 21:16 发表
25LC256或者25DF041A，microchip有这类SPI flash

The First one is a SPI EEPROM from Microchip, used to save some programmer related info, it is included because the PIC24 doesn't have internal EEPROM.
The 2nd one is a ATMEL SPI Flash, which will be used for future programmer-to-go function.

We have recently developed some 512K byte, 1M byte and 4M byte Programmer-to-go code based on PICkit 2. All C# and C source code has been send to Microchip for future releases. Before Walter Kicinski left Microchip, he has successfully integrated the C# code into the V2.61 Release (We have it tested on our machine without issue. ), so now User can use the PICKit 2 application code for SPI Flash based Programmer-to-Go feature.

We have the 512K, 1M and 4M Memory version of PICkit 2 prototype running successfully since Jan-2009 on our production line for heavy duty test. So far it has been working great.

莫名其妙

单片机用C++或者C#的情况应该不多吧，至少大部分应用都属于比较简单的，用C足够了。同样，单片机应用也不会需要很大的程序空间啊，不如直接用ARM比较合适。

FunnyNYPD

PICkit2 PC application code is written in C#, and PICKit2 2550 firmware is written in C.

莫名其妙

PIC有C#的编译器吗？感觉不太可能吧

暖暖的阳光

FunnyNYPD

原帖由 莫名其妙 于 2009-4-12 18:35 发表
PIC有C#的编译器吗？感觉不太可能吧

PICkit 2 application software is developed based on C#. (The firmware for 18F2550 is written in C.)
If you want to upgrade the pickit2 programmer-to-go capability from max 256K to 4M byte, you need modify the PC software too.

莫名其妙

看来microchip还赶时髦啊，.net并没有广泛应用，难道要装framework？

FunnyNYPD

I don't know why, but it does have lots of convenient features, like integrated pdf files into the GUI interface, etc.
It was't C# before. If I remember right, it is after the V2.4x release, all PC programs are ported into C# with Visual Studio 2005.

I don't like VS either. My limit experience find it is powerful and fast, but not so stable which is a key for embedded systems.  I can live with .Net for a programmer like PICkit 2, but not some critical control interfaces. (That's one of the reason, many real-time control went to Linux directly for its stability.)

It is a pity, one of the best/important  PICkit 2 team member recently left Microchip.

[ 本帖最后由 FunnyNYPD 于 2009-4-14 01:20 编辑 ]

lee40039

这是我做的

[ 本帖最后由 lee40039 于 2009-4-19 11:20 编辑 ]

bisedeng

那位兄弟有PCB板图？或者做了PCB板的？