diff --git a/docs/protocols/spi.md b/docs/protocols/spi.md index 17037ac..6e2a637 100644 --- a/docs/protocols/spi.md +++ b/docs/protocols/spi.md @@ -13,7 +13,7 @@ sudo flashrom -p linux spi:dev=/dev/spidev0.0,spispeed=1000 sudo flashrom -p linux spi:dev=/dev/spidev0.0,spispeed=1000 -r dump.bin ``` -An ESP8266 and ESP32 has several SPI busses available in hardware, SPI0 is hooked up to it's own internal flash and is not intended for use, but the HSPI and VSPI busses can be used in combination with a SOIC-8 clamp to read from SPI NOR chips. cheap clips have a tendency to jump of the chips, pomona 5250 has a better grip. +An ESP8266 and ESP32 have several SPI busses available in hardware, SPI0 is hooked up to it's own internal flash and is not intended for use, but the HSPI and VSPI busses can be used in combination with a SOIC-8 clamp to read from SPI NOR chips. cheap clips have a tendency to jump off the chips, pomona 5250 has a better grip. ```powershell $ python ./esptool.py read_flash --spi-connection HSPI 0 0x400000 flash_dump.bin @@ -31,11 +31,11 @@ $ ./mkspiffs -u /tmp/data -p 256 -b 8192 -s 1028096 /tmp/spiffs/bin ### ESP32 Diagrams -Color coded which pins can be connected from the ESP HSPI pins to an SPI flash. The pink interfaces are optional to switch to QSPI +Color coded which pins can be connected from the ESP HSPI pins to an SPI flash. The pink interfaces (DQ1 and DQ2) are optional, they are only used in QSPI mode.

-
- +
+

### References