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Implement a controller for the icebreaker 7-segment display pmod

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Peder Bergebakken Sundt 2020-08-09 21:56:20 +02:00
parent c68ec0f876
commit beb63dcf84
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fpga/modules/segment7.dg Normal file
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#!/usr/bin/env -S python3 -m dg
import "/nmigen_dg/*"
import "/nmigen/cli/main"
# iCEBreaker 7-Segment Pmod
Segment7 = subclass Elaboratable where
__init__ = output_hex: True ~> None where
@number = Signal 8 # i
@pmod = Signal 8 # o
@format_hex = output_hex
elaborate = platform ~> m where with m = Module! =>
select = Signal!
Sync$ Drive select ~select
s1 = Submodule$ Digit2Segs!
s2 = Submodule$ Digit2Segs!
if @format_hex =>
Comb$ Drive s1.digit $ @number >> 4
Comb$ Drive s2.digit $ @number & 0x0f
if not @format_hex =>
Comb$ Drive s1.digit $ @number // 10
Comb$ Drive s2.digit $ @number & 10
Comb$ Drive @pmod $ Cat
Mux select s1.segs s2.segs
select
Digit2Segs = subclass Elaboratable where
__init__ = self -> None where
@digit = Signal 4
@segs = Signal 7
elaborate = platform ~> m where with m = Module! =>
Switch self.digit
0x0 ,-> Comb$ Drive @segs 0b0111111
0x1 ,-> Comb$ Drive @segs 0b0000110
0x2 ,-> Comb$ Drive @segs 0b1011011
0x3 ,-> Comb$ Drive @segs 0b1001111
0x4 ,-> Comb$ Drive @segs 0b1100110
0x5 ,-> Comb$ Drive @segs 0b1101101
0x6 ,-> Comb$ Drive @segs 0b1111101
0x7 ,-> Comb$ Drive @segs 0b0000111
0x8 ,-> Comb$ Drive @segs 0b1111111
0x9 ,-> Comb$ Drive @segs 0b1101111
0xa ,-> Comb$ Drive @segs 0b1110111
0xb ,-> Comb$ Drive @segs 0b1111100
0xc ,-> Comb$ Drive @segs 0b0111001
0xd ,-> Comb$ Drive @segs 0b1011110
0xe ,-> Comb$ Drive @segs 0b1111001
0xf ,-> Comb$ Drive @segs 0b1110001
if __name__ == "__main__" =>
design = Seg7!
main design ports: [design.pmod]