Changelog

v1.5.0

In the USB DFU interface, swap the alt=0 and alt=1 numbers to get APIO and IceStudio to work again out of the box.
Fix DFU CRAM programming.

v1.3.1

Make USB enumerate better in MacOS and everywhere (@dicristina).

v1.3.0

Switch SPI to hardware back-end with DMA (@MichaelBell). This applies to all code as <ice_spi.h> is used everywhere.
Introduce ICE_USB_SPI_CDC: a new USB protocol to access the various SPI parts, along with a new host-side python library for it.

v1.2.1

With the default firmware, the FPGA was rebooting after a few seconds due to the operating system reading the USB interface. We now let the FPGA run even when that happens, and only reset it on write calls.

v1.2.0

Fix UART forwarding in the SDK while used in combination with the TinyUF2 firmware, which resurfced again.
Offer a reduced API for configuring forwarding of UART among other things. Improved documentation in parallel.

v1.1.2

Fix TinyUF2 stopping the FPGA while being read, which happens at every boot with the operating system peeking at the various files in the USB drive out of curiosity.
Fix UART forwarding in the SDK while used in combination with the TinyUF2 firmware, which takes over the default UART for logging.

v1.1.1

Fix UART forwarding in the SDK and example.

v1.1.0

Fix TinyUF2 on Windows
Easier USB configuration only requiring to change tusb_config.h.

v1.0.0

Libraries to communicate with each chip of the device
All exapmles working except pico_fpga_io and pico_usb_keyboard

v0.1.0

(fix) PIO-based CRAM programming works again
The bit-banged SPI library does not need any tx_rx_swapp parameter anymore.

v0.0.0

(new) USB configuration works,
(new) bit-banged ice_spi.h that can swap TX/RX and API ready for DMA (not DMA support yet),
DFU to iCE40 external flash works,
LEDs control works,
Everything else does not work yet