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Add blink_v82 and playground folder. #121

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Add blink_v82 and playground folder. #121

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6 changes: 6 additions & 0 deletions 5a-75b/blink/blink_v82.lpf
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LOCATE COMP "osc_clk25" SITE "P6";
LOCATE COMP "led" SITE "T6";
LOCATE COMP "button" SITE "R7";
LOCATE COMP "phy_rst_" SITE "R6";
LOCATE COMP "bomb" SITE "C4";
2 changes: 2 additions & 0 deletions 5a-75b/playground/.gitignore
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.*.swp
build/
28 changes: 28 additions & 0 deletions 5a-75b/playground/Makefile
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all:build/playground.svf build/playground.bit

SYNTH_SRCS=main.v

PACKAGE=CABGA256
LFP=blink_v82.lpf

build/playground.json: $(SYNTH_SRCS)
yosys -p 'read_verilog $(SYNTH_SRCS); synth_ecp5 -top playground -abc9 -json $@'

build/playground.config: build/playground.json $(LPF)
nextpnr-ecp5 --25k --package $(PACKAGE) --speed 6 --lpf $(LFP) --json build/playground.json --textcfg build/playground.config --freq 25

build/playground.svf: build/playground.config
ecppack --compress --input $< --svf $@

build/playground.bit: build/playground.config
ecppack --compress --input $< --bit $@

prog: build/playground.bit
openFPGALoader -c usb-blaster --vid 0x09fb --pid 0x6001 build/playground.bit

flash: build/playground.bit
# ERASES THE DEFAULT CONTENTS OF THE SPI FLASH!
openFPGALoader -c usb-blaster --vid 0x09fb --pid 0x6001 --unprotect-flash -f build/playground.bit

clean:
rm -f build/*
6 changes: 6 additions & 0 deletions 5a-75b/playground/blink_v82.lpf
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LOCATE COMP "osc_clk25" SITE "P6";
LOCATE COMP "led" SITE "T6";
LOCATE COMP "button" SITE "R7";
LOCATE COMP "phy_rst_" SITE "R6";
LOCATE COMP "bomb" SITE "C4";
20 changes: 20 additions & 0 deletions 5a-75b/playground/main.v
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`default_nettype none

module playground(
input wire osc_clk25,
input wire button,
output wire led,
output wire phy_rst_
);

reg [25:0] cntr = 0;

always @(posedge osc_clk25)
begin
cntr <= cntr + 1;
end

assign led = cntr[23] ^ button;
assign phy_rst_ = 1'b1;

endmodule