Allow the READ PARAMETER command to return our version number.

(significant size impact: 14 bytes!)

Initialized "address" to eliminate compiler warning (4 bytes!)

Add "atmega168" as a more accurate target name than "diecimila"
(keep diecimila as well for backward compatibility)

Reduce the .hex and .lst targets that are stored in source control
to the three basics: atmega8, atmega168, atmega328.  The other
targets remain in the makefile and makeall, but will need to be
built from source if wanted.  Which should be less of a problem
now that the source is buildable without installing crosspack.
(cherry picked from commit 7b1ee0f1b0192143fffbbed66dc046b6568f4386)

Author: WestfW

bootloaders/optiboot/Makefile

@@ -177,8 +177,27 @@ pro16_isp: LFUSE = C6
 pro16_isp: EFUSE = 04
 pro16_isp: isp
 
-# Diecimila and NG use identical bootloaders
+# Diecimila, Duemilanove with m168, and NG use identical bootloaders
+# Call it "atmega168" for generality and clarity, keep "diecimila" for
+# backward compatibility of makefile
 #
+atmega168: TARGET = atmega168
+atmega168: MCU_TARGET = atmega168
+atmega168: CFLAGS += '-DLED_START_FLASHES=3' '-DBAUD_RATE=115200'
+atmega168: AVR_FREQ = 16000000L 
+atmega168: $(PROGRAM)_atmega168.hex
+atmega168: $(PROGRAM)_atmega168.lst
+
+atmega168_isp: atmega168
+atmega168_isp: TARGET = atmega168
+# 2.7V brownout
+atmega168_isp: HFUSE = DD
+# Low power xtal (16MHz) 16KCK/14CK+65ms
+atmega168_isp: LFUSE = FF
+# 512 byte boot
+atmega168_isp: EFUSE = 04
+atmega168_isp: isp
+
 diecimila: TARGET = diecimila
 diecimila: MCU_TARGET = atmega168
 diecimila: CFLAGS += '-DLED_START_FLASHES=3' '-DBAUD_RATE=115200'

bootloaders/optiboot/README.TXT

@@ -68,3 +68,14 @@ variables when you invoke make:
 
    make ISPTOOL=stk500v1 ISPPORT=/dev/tty.usbserial-A20e1eAN  \
         ISPSPEED=-b19200 atmega328_isp
+
+The "atmega8_isp" target does not currently work, because the mega8
+doesn't have the "extended" fuse that the generic ISP target wants to
+pass on to avrdude.  You'll need to run avrdude manually.
+
+
+Standard Targets
+
+I've reduced the pre-built and source-version-controlled targets
+(.hex and .lst files included in the git repository) to just the
+three basic 16MHz targets: atmega8, atmega16, atmega328.

bootloaders/optiboot/makeall

@@ -1,15 +1,20 @@
 #!/bin/bash
 make clean
+#
+# The "big three" standard bootloaders.
+make atmega8
+make atmega168
+make atmega328
+#
+# additional buildable platforms of
+#  somewhat questionable support level
 make lilypad
 make lilypad_resonator
 make pro8
 make pro16
 make pro20
-make diecimila
-make atmega328
 make atmega328_pro8
 make sanguino
 make mega
-make atmega8
 make atmega88
 make luminet

bootloaders/optiboot/optiboot.c

@@ -132,6 +132,9 @@
 /**********************************************************/
 /* Edit History:					  */
 /*							  */
+/* 4.4 WestfW: add initialization of address to keep      */
+/*             the compiler happy.  Change SC'ed targets. */
+/*             Return the SW version via READ PARAM       */
 /* 4.3 WestfW: catch framing errors in getch(), so that   */
 /*             AVRISP works without HW kludges.           */
 /*  http://code.google.com/p/arduino/issues/detail?id=368n*/
@@ -141,7 +144,7 @@
 /**********************************************************/
 
 #define OPTIBOOT_MAJVER 4
-#define OPTIBOOT_MINVER 3
+#define OPTIBOOT_MINVER 4
 
 #define MAKESTR(a) #a
 #define MAKEVER(a, b) MAKESTR(a*256+b)
@@ -261,8 +264,10 @@ int main(void) {
   /*
    * Making these local and in registers prevents the need for initializing
    * them, and also saves space because code no longer stores to memory.
+   * (initializing address keeps the compiler happy, but isn't really
+   *  necessary, and uses 4 bytes of flash.)
    */
-  register uint16_t address;
+  register uint16_t address = 0;
   register uint8_t  length;
 
   // After the zero init loop, this is the first code to run.
@@ -324,9 +329,22 @@ int main(void) {
     ch = getch();
 
     if(ch == STK_GET_PARAMETER) {
-      // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy
-      getNch(1);
-      putch(0x03);
+      unsigned char which = getch();
+      verifySpace();
+      if (which == 0x82) {
+	/*
+	 * Send optiboot version as "minor SW version"
+	 */
+	putch(OPTIBOOT_MINVER);
+      } else if (which == 0x81) {
+	  putch(OPTIBOOT_MAJVER);
+      } else {
+	/*
+	 * GET PARAMETER returns a generic 0x03 reply for
+         * other parameters - enough to keep Avrdude happy
+	 */
+	putch(0x03);
+      }
     }
     else if(ch == STK_SET_DEVICE) {
       // SET DEVICE is ignored

bootloaders/optiboot/optiboot_atmega328.hex

@@ -1,34 +1,35 @@
-:107E0000112484B714BE81FFE7D085E08093810000
+:107E0000112484B714BE81FFF0D085E080938100F7
 :107E100082E08093C00088E18093C10086E0809377
-:107E2000C20080E18093C4008EE0C0D0259A86E035
+:107E2000C20080E18093C4008EE0C9D0259A86E02C
 :107E300020E33CEF91E0309385002093840096BBD3
-:107E4000B09BFECF1D9AA8958150A9F799249394D1
-:107E5000A5E0AA2EF1E1BF2E9DD0813421F481E06E
-:107E6000B3D083E01FC0823411F484E103C08534B1
-:107E700019F485E0A9D083C0853579F48BD0E82E3C
-:107E8000FF2488D0082F10E0102F00270E291F296B
-:107E9000000F111F91D0680172C0863529F484E06B
-:107EA00093D080E06FD06BC0843609F042C072D0AE
-:107EB00071D0082F6FD080E0C81680E7D80620F474
-:107EC00083E0F60187BFE895C0E0D1E063D08993F5
-:107ED0000C17E1F7F0E0CF16F0E7DF0620F083E0C3
-:107EE000F60187BFE89568D007B600FCFDCFA60174
-:107EF000A0E0B1E02C9130E011968C91119790E0C8
-:107F0000982F8827822B932B1296FA010C0197BE8B
-:107F1000E89511244E5F5F4FF1E0A038BF0751F79D
-:107F2000F601A7BEE89507B600FCFDCFB7BEE89501
-:107F300026C08437B1F42ED02DD0F82E2BD03CD0D3
-:107F4000F601EF2C8F010F5F1F4F84911BD0EA9435
-:107F5000F801C1F70894C11CD11CFA94CF0CD11CB4
-:107F60000EC0853739F428D08EE10CD085E90AD0CF
-:107F70008FE098CF813511F488E018D01DD080E1D2
-:107F800001D06ACF982F8091C00085FFFCCF9093DD
-:107F9000C60008958091C00087FFFCCF8091C0008B
-:107FA00084FD01C0A8958091C6000895E0E6F0E048
-:107FB00098E1908380830895EDDF803219F088E0A6
-:107FC000F5DFFFCF84E1DECF1F93182FE3DF1150E1
-:107FD000E9F7F2DF1F91089580E0E8DFEE27FF2741
-:027FE000099402
-:027FFE0003047A
+:107E4000B09BFECF1D9AA8958150A9F7CC24DD24C4
+:107E500088248394B5E0AB2EA1E19A2EF3E0BF2EE7
+:107E6000A2D0813461F49FD0082FAFD0023811F036
+:107E7000013811F484E001C083E08DD089C08234E0
+:107E800011F484E103C0853419F485E0A6D080C0E4
+:107E9000853579F488D0E82EFF2485D0082F10E0AE
+:107EA000102F00270E291F29000F111F8ED06801E7
+:107EB0006FC0863521F484E090D080E0DECF843638
+:107EC00009F040C070D06FD0082F6DD080E0C81688
+:107ED00080E7D80618F4F601B7BEE895C0E0D1E017
+:107EE00062D089930C17E1F7F0E0CF16F0E7DF06D8
+:107EF00018F0F601B7BEE89568D007B600FCFDCFD4
+:107F0000A601A0E0B1E02C9130E011968C91119780
+:107F100090E0982F8827822B932B1296FA010C0160
+:107F200087BEE89511244E5F5F4FF1E0A038BF0790
+:107F300051F7F601A7BEE89507B600FCFDCF97BE46
+:107F4000E89526C08437B1F42ED02DD0F82E2BD052
+:107F50003CD0F601EF2C8F010F5F1F4F84911BD097
+:107F6000EA94F801C1F70894C11CD11CFA94CF0C13
+:107F7000D11C0EC0853739F428D08EE10CD085E9AC
+:107F80000AD08FE07ACF813511F488E018D01DD067
+:107F900080E101D065CF982F8091C00085FFFCCF94
+:107FA0009093C60008958091C00087FFFCCF809118
+:107FB000C00084FD01C0A8958091C6000895E0E648
+:107FC000F0E098E1908380830895EDDF803219F02E
+:107FD00088E0F5DFFFCF84E1DECF1F93182FE3DFCA
+:107FE0001150E9F7F2DF1F91089580E0E8DFEE27F6
+:047FF000FF270994CA
+:027FFE00040479
 :0400000300007E007B
 :00000001FF