Send big binaries with a pause (hack).

Makefile

@@ -1,5 +1,7 @@
 PROJECT := demo
 
+SERIALPORT = /dev/ttyUSB0
+
 SRC = \
 	  src/ceda_print_a.asm	\
 	  src/ceda_print_c.c	\
@@ -30,9 +32,17 @@ $(OUTDIR)/$(PROJECT)_code_compiler.bin: $(OBJ) | $(OUTDIR)
 %.o: %.asm
 	zcc +z80 -c -o $@ $<
 
+%.pkt: %.prg
+	script/makepacket.py $< > $@
+
 $(OUTDIR):
 	mkdir -p $@
 
+.PHONY: send
+send: $(OUTDIR)/$(PROJECT).pkt
+	stty -F $(SERIALPORT) 9600 crtscts
+	script/sendpacket.py < $<
+
 .PHONY: clean
 clean:
 	$(RM) $(OBJ)

script/makepacket.py

@@ -0,0 +1,17 @@
+#!/usr/bin/python3
+
+import sys
+import struct
+
+filename = sys.argv[1]
+ifile = open(filename, 'rb')
+
+content = ifile.read()
+
+address = content[0] + content[1] * 256
+data = content[2:]
+size = len(data)
+
+sys.stdout.buffer.write(struct.pack("<HH", address, size))
+sys.stdout.buffer.write(data)
+

script/sendpacket.py

@@ -0,0 +1,16 @@
+#!/usr/bin/python3
+
+import serial
+import time
+import sys
+
+ser = serial.Serial('/dev/ttyUSB0', 9600)
+
+while True:
+    c = sys.stdin.buffer.read(1)
+    if len(c) == 0:
+        break
+    ser.write(c)
+    # sys.stdout.buffer.write(c)
+    time.sleep(0.001)
+