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Nicer README

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logicog
2025-05-10 17:07:31 +02:00
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@@ -67,16 +67,17 @@ Overlay 1 Overlay 2 Overlay n
``` ```
### Hardware supported by the code so far ### Hardware supported by the code so far
The following hardware is supported:
Clock generation, including different divider settings - The following hardware is supported:
Interrupt control for timer, serial, external irqs 0, 1 - Clock generation, including different divider settings
Serial console via SFRs - Interrupt control for timer, serial, external irqs 0, 1
Flash operations via SFRs - Serial console via SFRs
Access to Switch registers via SFRs - Flash operations via SFRs
- Access to Switch registers via SFRs
- LED setup - LED setup
- Reset - Reset
- Some switch settings - Some switch settings
Access to PHYs via MDIO (only conceptually, not tested): - Access to PHYs via MDIO (only conceptually, not tested):
- Clause 22? via SFR - Clause 22? via SFR
- Clause 45 via SFR - Clause 45 via SFR
@@ -92,13 +93,14 @@ ANY OTHER EQUIPMENT INVOLVED OR HARM YOURSELF.
There is no support for uploading the firmware via ethernet. Instead you There is no support for uploading the firmware via ethernet. Instead you
need to open the switch and flash the image directly onto the flash chip, need to open the switch and flash the image directly onto the flash chip,
which is done easiest using a SOIC-8 clip: which is done easiest using a SOIC-8 clip (alternatively you de-solder the
flash chip and install a SOIC adapter):
- Disconnect power from switch - Disconnect power from switch
- Attach the clip onto the flash chip - Attach the clip onto the flash chip
- Connect USB of flash programmer, the power LED on the switch will light - Connect USB of flash programmer, the power LED on the switch will light
up, check cabling if not. Don't panic, mixing up GND and 3.3V does not up, check cabling if not. Don't panic, mixing up GND and 3.3V does not
seem to destroy the switch (at leasts the on I did this to). seem to destroy the switch (at leasts the on I did this to).
- Use IMSProg to detect the clip - Use IMSProg (flashrom should work, too) to detect the clip
- MAKE A BACKUP OF THE EXISTING FIRMWARE! - MAKE A BACKUP OF THE EXISTING FIRMWARE!
- then load the firmware into IMSProg - then load the firmware into IMSProg
- and program flash - and program flash