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3 commits

Author SHA1 Message Date
Jonas Thörnblad
ab4ef5fdf9
fpga: Introduce CTS signals for UART 
Add incoming and outgoing CTS (Clear To Send) signals for the FPGA to
let the CH552 and FPGA signal each other that it is OK to send UART
data. The CTS signals indicate "OK to send" if high. If an incoming
CTS signal goes low, the receiver of that signal should immediatly
stop sending UART data.
 2025-02-11 13:50:04 +01:00
Joachim Strömbergson
3bc2453287
A construction of a minimal SPI master. 
- NOTE: This is an optional feature, not built by default. Not included
  in the tk1 for sale at Tillitis shop.
- This makes it possible to interface the SPI flash onboard TKey.
- To include the SPI master in the build, use `make application_fpga.bin
  YOSYS_FLAG=-DINCLUDE_SPI_MASTER`.

Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2024-06-11 15:28:29 +02:00
Joachim Strömbergson
022bf0bbf9
Change name of pin constraint file to match tk1 pcb 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-07-04 09:04:29 +02:00
Renamed from hw/application_fpga/data/application_fpga_mta1_usb_v1.pcf (Browse further)