projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| d83eec54 UH |
1 | This is an example capture of a Macronix MX25L1605D (MX25L1605DPI-12G) |
| 2 | SPI flash chip (16MBit == 2Mbyte; NOR flash) that is being written to. | |
| 3 | ||
| 4 | The SPI programmer hardware used is openbiosprog-spi, see | |
| 5 | ||
| 6 | http://randomprojects.org/wiki/Openbiosprog-spi | |
| 7 | ||
| 8 | The software used for programming it is flashrom, see | |
| 9 | ||
| 10 | http://flashrom.org/FT2232SPI_Programmer | |
| 11 | ||
| 12 | The command line used was | |
| 13 | ||
| 14 | flashrom -p ft2232_spi:type=2232H,port=A -w filename | |
| 15 | ||
| 16 | where 'filename' is a 2MByte file filled with lots of consecutive "HelloWorld" | |
| 17 | ASCII character strings. | |
| 18 | ||
| f28b538f UH |
19 | The logic analyzer used for capturing is a ChronoVu LA8 at a sample rate |
| 20 | of 25MHz. The capture was done using sigrok (11/2011) via | |
| d83eec54 | 21 | |
| f28b538f UH |
22 | sigrok-cli -d 0:samplerate=25mhz --samples 8388608 \ |
| 23 | -p '1=CS#,2=MISO,3=SCLK,4=MOSI,5=WP#,6=HOLD#' \ | |
| 24 | -o mx25l1605d_write_hello_world.sigrok | |
| d83eec54 | 25 | |
| f28b538f | 26 | The ChronoVu LA8 probes were connected like this to the MX25L1605D chip: |
| d83eec54 UH |
27 | |
| 28 | Probe SPI chip pin | |
| 29 | ------------------------ | |
| f28b538f UH |
30 | 0 (green) CS# |
| 31 | 1 (orange) SO/SIO1 (a.k.a MISO) | |
| 32 | 2 (white) SCLK | |
| 33 | 3 (red) SI/SIO0 (a.k.a MOSI) | |
| 34 | 4 (gray) WP#/ACC | |
| 35 | 5 (brown) HOLD# | |
| d83eec54 UH |
36 | GND GND |
| 37 | ||
| f28b538f | 38 | The capture is only partial, it contains a small part of the write process |
| d83eec54 | 39 | (it does not contain the chip identification, chip erase, etc. which comes |
| f28b538f UH |
40 | before the actual write parts; it also does not contain anything after that, |
| 41 | the flashrom command took quite a bit longer than what the capture shows). | |
| d83eec54 | 42 |