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Questions tagged [spi]

Acronym for 'Serial Peripheral Interface' (SPI), the SPI bus is a synchronous serial communication interface specification used for short distance communication, primarily in embedded systems.

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215 views

SPI Flash, how to find the System memory addresses?

How to determine the System memory addresses of SPI Flash used in device running eCos operating system? For example, show flash command returns the following info: Flash Device Information: ...
2
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1answer
750 views

Reverse Engineering BIOS (AMI A0.57)

Recently I got really interested in BIOS RE and I used chipsec to dump the content of SPI Flash ROM of my HP Omen Desktop PC to start my journey. But unlike older BIOSes, the binary file was pretty ...
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1answer
246 views

SPI device sniffing/mirror feature

I have an an embedded Linux ARM board, where an application opens the /dev/spidev1.0 device and constantly talks through with another MCU. Now, if I I try to look at what exchanges (that's what I'd ...
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0answers
1k views

Dump a MX25L12845E with a bus pirate and flashrom

I just received my buspirate, I now want to dump a flash (MX25L12845E). I tried the following command: flashrom -V -p buspirate_spi:dev=/dev/tty.usbserial-AJ02XILF,spispeed=1M -r MX25L128.bin -c ...
8
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1answer
1k views

Reversing a 2.4Ghz Quadcopter remote control

TL;DR - I can't figure out why I'm failing to replicate the Quadcopter's remote control with, say, Arduino and NRF24L01 after eavesdropping the SPI commands on the remote control. So I got this ...
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1answer
158 views

I wonder about the SPI memory access [closed]

Good evening. I have a question. I have been using router has failed. I would like to proceed with the SPI memory dump. And I have connected to the SPI memory in the router board using the Bus ...
2
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0answers
494 views

Flashing NVRAM with U-Boot 1.2.0

I tried to program SPI Flash NVRAM (S25FL064A) from U-boot, but it not allow to write: tftp 0x80000100 nvram.bin cp.b 0x80000100 0x007b0000 0x00050000 There is no error shown after cp.b command, ...
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1answer
1k views

Erase the data from the NVRAM

Cable modem SPI Flash memory have the following structure: 7 cmdlinepart partitions found on MTD device spansion partitions[0] = {.name = U-Boot, .offset = 0x00000000,.size = 0x00020000 (128K) } ...
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1answer
629 views

In-circuit programming of SPI Flash memory

Is it possible to define (using only visual inspection of PCB and multimeter) whether or not SPI Flash memory can be properly programmed keeping the device In-circuit, without desoldering IC from the ...
4
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1answer
376 views

Potentially non-standard SPI communication

I am looking at a SPI EEPROM chip on board which is unfortunately hidden under an epoxy blob. However, I was able to determine the pinout thanks to the silkscreen. Dumping the EEPROM with a Bus ...
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2answers
476 views

How to find SPI pads (4 of them) on a logic board?

I have a logic board with 20 pads accessible on it. I know 2 of the 20 pads are UART (TX / RX) and one pad appears to reset the device when connecting a multi meter to it, so I presume that has ...
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3answers
4k views

Dump Flash Memory with SPI from SPANSION FL016KIF

I have a SPANSION FL016KIF (pinout on p.12) on a board and I want to dump the data. I try to use the BusPirate v3 for that. I want to do this in-circuit. I didn't connect WP# and HOLD#. This is the ...
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1answer
21k views

How to dump flash memory with SPI?

Often flash memory is connected via SPI (Serial Peripheral Interface Bus) to a processing unit like an ARM core or a micro controller. How can one dump the memory? Can there be protection mechanisms? ...