Lower baud rate

Avoid exhausting the buffer of the USB->Serial interface of the Arduino
UNO.

arduino/Makefile

@@ -34,7 +34,7 @@ upload: $(name).hex $(name).lst
 
 .PHONY: screen
 screen: upload
-	minicom -D $(SERIAL) -b 2000000
+	minicom -D $(SERIAL) -b 500000
 
 %.hex: $(dir_build)/%.elf
 	$(OBJCOPY) -O ihex -R .eeprom $< $@

arduino/source/main.c

@@ -188,7 +188,7 @@ int main(void)
     //PCMSK1 = _BV(PCINT9);
 
     // Initialize the program
-    serial_init(2000000);
+    serial_init(500000);
     pinmode(PIN_MOSFET, OUTPUT);
     writepin(PIN_MOSFET, LOW);
     cart_init();

client/source/main.c

@@ -55,7 +55,7 @@ int main(int argc, char *argv[])
     puts(sp_get_port_name(port));
 
     if (sp_open(port, SP_MODE_READ_WRITE) != SP_OK ||
-            sp_set_baudrate(port, 2000000) != SP_OK ||
+            sp_set_baudrate(port, 500000) != SP_OK ||
             sp_set_flowcontrol(port, SP_FLOWCONTROL_NONE) != SP_OK) {
         serial_error("Failed to open port");
         return 1;