一种FPGA实现的串口开关双控的USB切换器

多件键盘键值向上位机串口输出，接受并执行上位机串口的控制，串口使用ASCII码传输，串口逻辑控制逻辑按键去抖均采用Verilog实现。读此代码可以理解串口收发逻辑、键盘去抖、串口控制逻辑，相信对业内人士有所帮助，内附ASCII与HEX换算表

usb_ctrl
_xmsgs
_ngo
xlnx_auto_0_xdb
usb_ctrl
templates
iseconfig
ipcore_dir
.lso
aaaa.mcs
AScII.jpg
ASCII.xls
bram_moudle.sym
bram_moudle.v
ctrl_rec_decode.v
data_rec_reg.cmd_log
data_rec_reg.prj
data_rec_reg.stx
data_rec_reg.tfi
data_rec_reg.v
data_rec_reg.xst
divider.v
fifo_uart.sym
fifo_uart.v
gen_pulse_1s.v
head_end_detect.v
key_debounce.cmd_log
key_debounce.tfi
key_debounce.v
rec_xkzd.v
rxd.v
send_xkt.v
top.bgn
top.bit
top.bld
top.cmd_log
top.drc
top.lso
top.ncd
top.ngc
top.ngd
top.ngr
top.pad
top.par
top.pcf
top.prj
top.ptwx
top.stx
top.syr
top.twr
top.twx
top.unroutes
top.ut
top.v
top.xpi
top.xst
top_bitgen.xwbt
top_envsettings.html
top_guide.ncd
top_map.map
top_map.mrp
top_map.ncd
top_map.ngm
top_map.xrpt
top_ngdbuild.xrpt
top_pad.csv
top_pad.txt
top_par.xrpt
top_summary.html
top_summary.xml
top_usage.xml
top_xst.xrpt
txd.v
uart_ctrl.v
UART_Rx_Ctrl.v
UART_Rx_module.cmd_log
UART_Rx_module.tfi
UART_Rx_module.v
UART_Tx_ctrl.cmd_log
UART_Tx_ctrl.tfi
UART_Tx_ctrl.v
UART_Tx_module.cmd_log
UART_Tx_module.tfi
UART_Tx_module.v
usage_statistics_webtalk.html
usb_ctrl.gise
usb_ctrl.xise
webtalk.log
webtalk_pn.xml