UART receiver

uart_receiver/Makefile

@@ -0,0 +1,102 @@
+NAME = uart_receiver
+VERILOG += top.v
+VERILOG += uart_rx.v
+VERILOG += ir_encoder.v
+INC = ./
+LPF = karnix_cabga256.lpf
+DEVICE = 25k
+PACKAGE = CABGA256
+FTDI_CHANNEL = 0 ### FT2232 has two channels, select 0 for channel A or 1 for channel B
+#
+FLASH_METHOD := flash
+UPLOAD_METHOD := openloader
+
+.PHONY: clean
+all: $(NAME).bit
+
+.PHONY: upload
+upload: $(NAME).bit
+ifeq ("$(UPLOAD_METHOD)", "ecpprog")
+	$(MAKE) upload_ecpprog
+else
+ifeq ("$(UPLOAD_METHOD)", "openloader")
+	$(MAKE) upload_openloader
+else
+ifeq ("$(UPLOAD_METHOD)", "")
+	echo "Upload method has not been chosen, set UPLOAD_METHOD env variable to 'ecpprog' or 'openloader'."
+else
+	echo "Unsupported upload method: $(UPLOAD_METHOD)."
+endif
+endif
+endif
+
+.PHONY: upload_openloader
+upload_openloader:
+ifeq ("$(FLASH_METHOD)", "flash")
+	openFPGALoader -v --ftdi-channel $(FTDI_CHANNEL) -f --reset $(NAME).bit
+else
+	openFPGALoader -v --ftdi-channel $(FTDI_CHANNEL) $(NAME).bit
+endif
+
+.PHONY: upload_ecpprog
+upload_ecpprog:
+ifeq ("$(FLASH_METHOD)", "flash")
+	ecpprog -I $(if $(filter $(FTDI_CHANNEL),0),A,B) -X $(NAME).bit
+else
+	ecpprog -I $(if $(filter $(FTDI_CHANNEL),0),A,B) -S $(NAME).bit
+endif
+
+
+
+fw: $(NAME).bit
+
+$(NAME).bit: $(LPF) $(VERILOG)
+	yosys -p "verilog_defaults -add -I$(subst :, -I,$(INC))" -p "read_verilog -sv $(VERILOG)" -p "synth_ecp5 -json $(NAME).json -top top" -l $(NAME).yosys.log
+	nextpnr-ecp5 --package $(PACKAGE) --$(DEVICE) --json $(NAME).json --textcfg $(NAME)_out.config --lpf $(LPF) --lpf-allow-unconstrained -l $(NAME).nextpnr.log 
+	ecppack --compress --freq 38.8 --input $(NAME)_out.config --bit $(NAME).bit
+	$(MAKE) check
+
+
+.PHONY: graph 
+graph: $(LPF) $(VERILOG)
+	yosys -p "verilog_defaults -add -I$(subst :, -I,$(INC))" -p "read_verilog -sv +/ecp5/cells_bb.v" -p "hierarchy -check -top top" -p "proc; opt; fsm; memory; opt" -p "synth_ecp5 -noabc9 -top top -json $(NAME).json" -p "show -prefix $(NAME) -notitle -colors 2 -width -format dot" $(VERILOG) | tee $(NAME).yosys.log
+	@if [ -f "`which dot`" ]; then \
+		echo "Generating PDFs with schematics..."; \
+		dot -Tpdf -O $(NAME).dot; \
+	else \
+		echo "Note: 'dot' utility is not installed, PDF won't be generated!"; \
+	fi
+	netlistsvg -o $(NAME).svg $(NAME).json
+	#@echo "Generating SVGs with routing and placement..."
+	#nextpnr-ecp5 --package $(PACKAGE) --$(DEVICE) --json $(NAME).json --textcfg $(NAME)_out.config --lpf $(LPF) --lpf-allow-unconstrained --placed-svg $(NAME)-placed.svg --routed-svg $(NAME)-routed.svg | tee $(NAME).nextpnr.log
+	$(MAKE) check
+	@if [ -f "`which xdot`" ]; then \
+		xdot $(NAME).dot; \
+	else \
+		echo "xdot utility is not installed, cannot show you DOT file:"; \
+		ls -al $(NAME).dot; \
+	fi
+	@if [ -f "`which firefox`" ]; then \
+		firefox $(NAME).svg $(NAME)-placed.svg $(NAME)-routed.svg $(NAME).*pdf; \
+	else \
+		echo "Firefox is not installed, cannot show you SVG and PDF files:"; \
+		ls -al $(NAME).svg $(NAME)-placed.svg $(NAME)-routed.svg $(NAME).*pdf; \
+	fi
+
+
+.PHONY: sim
+sim: $(VERILOG) $(NAME)_tb.v $(shell yosys-config --datdir)/ice40/cells_sim.v
+	iverilog $^ -o $(NAME)_tb.out
+	./$(NAME)_tb.out
+	gtkwave $(NAME)_tb.vcd $(NAME)_tb.gtkw &
+
+check:
+	@echo "Checking for warnings..."
+	@(grep Warn $(NAME).yosys.log $(NAME).nextpnr.log; echo)
+
+.PHONY: clean
+clean:
+	rm -f *.bit *.txt *.log *.json .blif *.out *.svg *.dot *.pdf *out.config *.vcd
+
+
+

uart_receiver/Readme.md

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+sudo screen /dev/ttyUSB1 115200,cs8,even,ixoff,-istrip
+# Для screen (параметры: скорость, четность, стоп-биты)
+    /dev/ttyUSB0 - UART-устройство
+
+    115200 - скорость передачи (baud rate)
+
+    cs8 - 8 бит данных
+
+    even - чётная четность (even parity)
+
+    ixoff - отключение управления потоком
+
+    -istrip - не обрезать 8-й бит
+
+screen /dev/ttyUSB1 115200,cs8,even,ixoff,-istrip,-cstopb
+
+    -cstopb = 1 стоп-бит (по умолчанию)
+
+    cstopb = 2 стоп-бита
+
+Настройки четности:
+even Чётная
+odd	Нечётная
+-parity	Без проверки чётности
+
+minicom (лучше для сложных настроек):
+
+minicom -D /dev/ttyUSB0 -b 115200 --8bit --parity=odd --stop=2