31
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Messages - pcfr33k
32
Bus Pirate Development / Re: Bus Pirate General Question
In the comments section someone who bought a BP told their story on how it saved their bricked motherboard. How were they able to update the firmware on it without removing the Bios chip?
So the Microchip board and BP do the same thing then right? The BP is easier to use because it does not have the coding as the microchip developer board does? I am sorry but maybe I need more clarification on this.
I was able to update the firmware on a Atmel SPI eeprom 25080AN SOIC package 150Mil very tiny. I had to desolder with Quick Chip and since I did not have an adapter at the time solder wires to each of the 8 pins. I use the MPLAB starter kit to do this easily. There was no coding involved at all.
33
Bus Pirate Development / Re: Bus Pirate General Question
I saw a post on how the Bus Pirate saved someone from a bricked Motherboard because their Bios was corrupted.
So they had to remove the Bios chip from the Motherboard or does Bus Pirate connect the pins from the Bus Pirate to the Motherboard serial pins to re-program the Bios chip?
Exactly how does this work? I don't see the point in Bus Pirate versus my current Microchip Starter kit or Microchip PICKIT 2 etc. I have a Zif socket on my board. I don't think my board can access the chips any other way where PICKIT 2 can do it other ways.
So the device itself has to have some way of connecting to it like Serial pins in order to re-program or just dump/write the hex code back to the device eeprom?
Tell me what I am missing here or where I am confused.
I actually thought the USB connection to your PC allowed you to access the Bus's inside the PC accessing some of the memory chips on the different devices inside the PC. If I misread how the Bus Pirate functions I am sorry but then I was mislead by the description of the Bus Pirate to.
Description:
Description: The Bus Pirate, created by Ian Lesnet and featured on Hack a Day, is a troubleshooting tool that communicates between a PC and any embedded device over most standard serial protocols, which include I2C, SPI, and asynchronous serial - all at voltages from 0-5.5VDC. This product eliminates a ton of early prototyping effort when working with new or unknown chips.
So I have misinterpreted its meaning. The embedded device must be external and not connected inside the PC? How in the world is one to simple access the device then? How does one re-program a bricked motherboard Bios or a bricked Graphics card Bios etc?
The D-link DWA-140 wireless adapter is another story. I was able to remove the surface mount 8 pin SOIC 150mil in size chip and soldered 8 wires to the pins and inserted those wires into my starter kits zif socket and was able to read, make changes/dump/export/import and write back to the device. I just ordered on ebay an adapter to just fit the chip inside then into my programmer (zif socket) to make my life easier next time but I still had to remove the chip and solder it back using chipquick.
How would Bus Pirate helped me out in this regard?
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Bus Pirate Development / Re: Bus Pirate General Question
The software/firmware targets the device and no other and updates the eeprom chip. So if this works then why would I not be able to do this with Bus Pirate and the right program or commands?
The firmware is most definitely read/write on the Atmel 25080AN chip. Its an SPI 8 bit 5MHZ EEprom that is on the D-Link USB DWA-140 wireless adapter.
I just don't want to desolder it an place it in my eeprom reader/writer.
WIl Microchips MPLAB starter kit software work wit the Bus Pirate? I know you can use MPLAB with the PICKIT2 or PICKIT 3 to upload a boot loader to Bus Pirate.
Does PICKIT 2 or 3 by Microchip and sureelectronics clone work similar to Bus Pirate? If that is the case then it may be better for me to go that route since MPLAB is so easy to use for me at least.
35
Bus Pirate Development / [SOLVED] Bus Pirate General Question
Here is an example:
I have a D-Link DWA-140 that is a USB Wireless Adapter. The ATMEL 25080AN EEPROM firmware somehow got screwed up.
I have a copy of the bin I extracted a long time ago and want to flash this back to the device.
Can I do this with the Bus Pirate? The USB Wireless Device will be connected to the USB port of the PC along with the Bus Pirate.
Will I be able to access the EEPROM on the USB Wireless device to program it or does the chip have to be desoldered off the board and hooked up to the Bus Pirate?
I have a product from Microchip MPLAB Starter kit but I have to put the I2C, SPI etc chips onto the board and re-program. SO how does the Bus pirate make this part easier than what I have now? Taking away the disadvantage that of EEPROM has to be removed from the D-Link and placed onto the microchip adapter board to re-program it.
For those who want to see what Microchip product I am referring to it is product # DV243003