Make USB_SERIAL fit for the Arduino IDE.

This also includes renaming of USE_USB to USB_SERIAL for more
consistency.

Makefile

@@ -94,7 +94,10 @@ PROGID = stk500v2
 
 PROGRAM = mendel
 
-SOURCES = $(PROGRAM).c gcode_parse.c gcode_process.c dda.c dda_maths.c dda_queue.c timer.c temp.c sermsg.c watchdog.c debug.c sersendf.c heater.c analog.c intercom.c pinio.c clock.c home.c crc.c delay.c serial.c
+SOURCES  = $(PROGRAM).c gcode_parse.c gcode_process.c dda.c dda_maths.c
+SOURCES += dda_queue.c timer.c temp.c sermsg.c watchdog.c debug.c sersendf.c
+SOURCES += heater.c analog.c intercom.c pinio.c clock.c home.c crc.c delay.c
+SOURCES += serial.c usb_serial.c
 
 ARCH = avr-
 CC = $(ARCH)gcc
@@ -111,17 +114,6 @@ LIBS = -lm
 LIBDEPS =
 SUBDIRS =
 
-ifneq (,$(findstring usb,$(MCU_TARGET)))
-USE_USB = true
-endif
-ifneq (,$(findstring u4,$(MCU_TARGET)))
-USE_USB = true
-endif
-ifdef USE_USB
-CFLAGS += -DUSE_USB
-SOURCES += usb_serial.c
-endif
-
 ifeq ($(PROGBAUD),0)
 PROGBAUD_FLAG =
 else

config.default.h

@@ -384,10 +384,18 @@ DEFINE_HEATER(bed,      PB4,   1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.gen3.h

@@ -388,10 +388,18 @@ DEFINE_TEMP_SENSOR(bed,       TT_INTERCOM,    AIO1,      0)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.gen6.h

@@ -372,10 +372,18 @@ DEFINE_HEATER(extruder, PD6,   1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.gen7-v1.1-v1.3.h

@@ -383,10 +383,18 @@ DEFINE_HEATER(bed,      DIO3,  1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.gen7-v1.4.h

@@ -383,10 +383,18 @@ DEFINE_HEATER(bed,      DIO3,  1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.ramps-v1.2.h

@@ -381,10 +381,18 @@ DEFINE_HEATER(fan,      PH6,   1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.ramps-v1.3.h

@@ -383,10 +383,18 @@ DEFINE_HEATER(extruder, PB4,   1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.sanguinololu-v1.1.h

@@ -379,10 +379,18 @@ DEFINE_HEATER(bed,      PD6,   1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.sanguinololu-v1.2.h

@@ -379,10 +379,18 @@ DEFINE_HEATER(bed,      PD4,   1)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	115200
+// #define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

config.teensy.h

@@ -438,10 +438,18 @@ DEFINE_HEATER(fan,      DIO8,  0)
 // #define REPRAP_HOST_COMPATIBILITY 20110509
 // #define REPRAP_HOST_COMPATIBILITY <date of next RepRap Host compatibility break>
 
-/**
-	Baud rate for the connection to the host. Usually 115200, other common values are 19200, 38400 or 57600.
+/** \def BAUD
+  Baud rate for the serial RS232 protocol connection to the host. Usually
+  115200, other common values are 19200, 38400 or 57600. Ignored when USB_SERIAL
+  is defined.
+*/
+#define BAUD 115200
+
+/** \def USB_SERIAL
+  Define this for using USB instead of the serial RS232 protocol. Works on
+  USB-equipped ATmegas, like the ATmega32U4, only.
 */
-#define	BAUD	57600
+#define USB_SERIAL
 
 /** \def XONXOFF
 	Xon/Xoff flow control.

serial.c

@@ -13,7 +13,6 @@
 #include	<avr/interrupt.h>
 #include	"memory_barrier.h"
 
-#include	"config.h"
 #include	"arduino.h"
 
 /// size of TX and RX buffers. MUST be a \f$2^n\f$ value
@@ -24,7 +23,7 @@
 /// ascii XON character
 #define		ASCII_XON		17
 
-#ifndef USE_USB
+#ifndef USB_SERIAL
 /// rx buffer head pointer. Points to next available space.
 volatile uint8_t rxhead = 0;
 /// rx buffer tail pointer. Points to last character in buffer
@@ -224,7 +223,7 @@ void serial_writechar(uint8_t data)
 	// enable TX interrupt so we can send this character
 	UCSR0B |= MASK(UDRIE0);
 }
-#endif /* USE_USB */
+#endif /* USB_SERIAL */
 
 /// send a whole block
 void serial_writeblock(void *data, int datalen)

serial.h

@@ -1,11 +1,12 @@
 #ifndef	_SERIAL_H
 #define	_SERIAL_H
 
+#include "config.h"
 #include	<stdint.h>
 #include	<avr/io.h>
 #include	<avr/pgmspace.h>
 
-#ifdef USE_USB
+#ifdef USB_SERIAL
   #include "usb_serial.h"
   #define serial_init() usb_init()
   #define serial_rxchars() usb_serial_available()
@@ -24,7 +25,7 @@
   uint8_t serial_popchar(void);
   // send one character
   void serial_writechar(uint8_t data);
-#endif
+#endif /* USB_SERIAL */
 
 // read/write many characters
 // uint8_t serial_recvblock(uint8_t *block, int blocksize);

usb_serial.c

@@ -31,8 +31,10 @@
 // Version 1.7: fix usb_serial_set_control
 // 2012-10-17: Import to Teacup firmware
 
+#include "config.h"
+
 /* protect this file from Arduino IDE */
-#ifdef USE_USB
+#ifdef USB_SERIAL
 
 #define USB_SERIAL_PRIVATE_INCLUDE
 #include "usb_serial.h"
@@ -937,4 +939,4 @@ ISR(USB_COM_vect)
 	UECONX = (1<<STALLRQ) | (1<<EPEN);	// stall
 }
 
-#endif /* USE_USB */
+#endif /* USB_SERIAL */