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update README

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Triss 2021-06-14 03:40:19 +02:00
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@ -113,6 +113,13 @@ Different serial speeds can be used, too. Serprog support is *techincally*
untested, as in it does output the correct SPI commands as seen by my logic
analyzer, but I don't have a SPI flash chip to test it on.
The I2C-Tiny-USB functionality can be used as follows: first, load the
`i2c-dev` and `i2c-tiny-usb` modules (for now you need a patched version of the
latter, can be found in the `i2c-tiny-usb-misc/` folder in this repo). Then you
can use the I2C USB bridge as any other I2C device on your computer. For
example, the `i2cdetect`, `i2cget` and `i2cset` tools from `i2c-tools` should
all work. I2C functionality is currently untested, however.
### Runtime configuration
Several settings can be applied at runtime, using the `dmctl` Python script.
@ -160,7 +167,7 @@ libco is licensed under the [ISC license](https://opensource.org/licenses/ISC)
- [ ] Second UART port for when stdio UART is disabled?
- [x] Debug interface to send printf stuff directly to USB, instead of having
- to use the UART interface as a loopback thing.
- [ ] I2C support by emulating the I2C Tiny USB
- [x] I2C support by emulating the I2C Tiny USB
- [ ] Expose RP2040-internal temperature ADC on I2C-over-USB bus?
- Does SMBus stuff need special treatment here?
- [ ] Host-side script that is an XVC (or hw_server) cable and communicates