tri fpga-wire · the baud rate actually on the wire

CP2102N on a direct USB port, no hub. Requested 115,200 puts 115,385 on the wire (+0.16 %), 921,600 puts 923,077 (+0.16 %), 3,000,000 is exact.

trinity-fpga $ tri fpga-usb                                                                             
DIRECT ['0x1100000']                                                                                    
USB ok: AppleT6000USBXHCI -> CP2102N USB to UART Bridge Controller 10c4:ea60 @ 0x01100000; no hub in the
 path                                                                                                   
trinity-fpga $ tri fpga-wire 115200 921600 3000000                                                      
requested   115,200  N=208  wire      115,385  off +0.16 %  same wire rate for requests 115,108 .. 115,6
63  (x60 = 6.92 MHz)                                                                                    
requested   921,600  N=26   wire      923,077  off +0.16 %  same wire rate for requests 905,660 .. 941,1
76  (x60 = 55.38 MHz)                                                                                   
requested 3,000,000  N=8    wire    3,000,000  off +0.00 %  same wire rate for requests 2,823,529 .. 3,2
00,000  (x60 = 180.00 MHz)                                                                              
trinity-fpga $

recorded 2026-10-03 19:49 UTCreal 6.5 sshown 6.5 sexit codes 0 0

$ tri fpga-usb $ tri fpga-wire 115200 921600 3000000

Staged: the prompt and the typing. Real: every byte the commands printed, at the time they printed it. Any silence longer than 2 s is shown for 2 s, and the title bar says so while it happens. Edited: home directory shown as ~.

GIF Preview card