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nmigen-learning
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Hook up the VGA controller in top, draw a circle

This commit is contained in:
Peder Bergebakken Sundt 2020-08-15 15:48:53 +02:00
parent b38296538f
commit 0d02304dcf
1 changed files with 18 additions and 2 deletions
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20
fpga/icebreaker_vga.dg
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@ -5,6 +5,8 @@ import "/nmigen_dg/*"
import "/subprocess"
import "/sys"
import "common/pipeline"
import "common/to_signed"
import "modules/vga/DviController12"
import "resources/pmod"
@ -40,6 +42,9 @@ run_icepll = current target ->
Top = subclass Elaboratable where
elaborate = platform ~> m where with m = Module! =>
# Configure DVI controller
dvi = Submodule$ DviController12 x:800 y:480 fps:60
# setup clock
default_clk = platform.request platform.default_clk dir:"-"
@ -50,7 +55,7 @@ Top = subclass Elaboratable where
pll_config = run_icepll
default_freq
40e6
dvi.pix_freq
print dvi.timings
print pll_config
@ -86,9 +91,20 @@ Top = subclass Elaboratable where
Comb$ platform.request "led_g" :== ~state
# Feed a pciture to the DVI controller
Sync$ dvi.r :== 0x0
Sync$ dvi.g :== 0x0
Sync$ dvi.b :== 0x0
cx = to_signed dvi.pixel_x - (800//2)
cy = to_signed dvi.pixel_y - (480//2)
When (cx*cx + cy*cy < 150**2) $ ->
Sync$ dvi.r :== 0xF
Sync$ dvi.g :== 0xF
Sync$ dvi.b :== 0xF
if __name__ == "__main__" =>
plat = ICEBreakerPlatform!
plat.add_resources$ pmod.dvi_12bit 0
plat.add_resources$ plat.break_off_pmod
plat.build Top! do_program: ("--flash" in sys.argv)
plat.build Top! do_program: ("--flash" in sys.argv) synth_opts: "-dsp"