Merge pull request #42 from xloem/keyboard-flashing-with-programmer

Added more supports for flashing the atmega32u4 keyboard control chip…

SOFTWARE/A64-TERES/TERES-KBD-RELEASE/Keyboard_firmware/README.md

@@ -1,5 +1,81 @@
 Factory default firmware. Burn it with AVR-ISP500(-TINY) using avrdude and command:
 ```bash
-avrdude -V -pm32u4 -cstk500v2 -P/dev/ttyACM0 -U flash:w:keyboard.hex:a -U hfuse:w:0xD8:m -U efuse:w:0xC7:m -U lock:w:0xCF:m
+avrdude -p m32u4 -c stk500v2 -P /dev/ttyACM0 -U flash:w:keyboard.hex:a -U hfuse:w:0xD8:m -U efuse:w:0xC7:m -U lock:w:0xCF:m
 ```
 or any ATmega32U4-compatible programmer tool and software.
+
+An additional 2x3 male-male header is needed in order to connect the programmer
+to the board.  It connects to the keyboard controller board, where the AVR chip
+is, not the keyboard itself nor the mainboard. If the board is programmed
+in-system, cut off the excess pin length that sticks out underneath the board
+from the 2x3 header, so that soldered header pins do not press the board higher
+than its intended mounting height, potentially damaging it if screwed in place.
+Place a couple layers of tape under the pins to prevent the metal keyboard
+housing from shorting them, which prevents the board from responding.
+
+Note that the keyboard controller board may need to be externally powered in
+order to write successfully,  It seems sufficient to plug it into a fully
+powered running mainboard.  When working under the system with the battery and
+touchpad below the keyboard controller board, the cable for the AVR-ISP500
+should be heading off to your left from the 2x3 header it plugs in to, if
+oriented correctly.
+
+The keyboard control board has pin labels on the underside.  From above, when
+working with the system upside down and the keyboard below the viewer, they
+would be:
+
+	                                  GND 6    o o    5 RST
+	==== cable to programmer ====    MOSI 4    o o    3 SCK
+	                                  VDD 2    o o    1 MISO
+
+The pinout from the AVR-ISP500, looking into the female 2x3 plug with the cable heading to the right, is:
+
+	 RST 5    o o    6 GND
+	 SCK 3    o o    4 MOSI   ==== cable to programmer ====
+	MISO 1    o o    2 VDD
+
+Explanation of avrdude options, from the avrdude man page:
+
+	`-V`: skip verify step
+	`-p m32u4`: specifies the chip on the board
+	`-c stk500v2`: specifies the programmer used
+	`-P /dev/ttyACM0`: specifies the serial device to find the programmer
+	`-U flash:w:keyboard.hex:a`: [w]rites keyboard.hex to the flash ROM of the device, [a]utodetecting format
+	`-U hfuse:w:0xD8:m`: [w]rites the im[m]ediate value 0xD8 to the high fuse byte
+	`-U efuse:w:0xC7:m`: [w]rites the im[m]ediate value 0xC7 to the extended fuse byte
+	`-U lock:w:0xCF:m`: [w]rites the im[m]ediate value 0xCF to the lock byte
+
+	Other useful -U options: [r]ead to retrieve data from the chip, [r]aw format for binary, [i]ntel format for hex
+
+The list of the avrdude m32u4 memory types can be found from the avrdude `part` command in terminal (`-t`) mode:
+
+```
+AVR Part                      : ATmega32U4
+Chip Erase delay              : 9000 us
+PAGEL                         : PD7
+BS2                           : PA0
+RESET disposition             : dedicated
+RETRY pulse                   : SCK
+serial program mode           : yes
+parallel program mode         : yes
+Timeout                       : 200
+StabDelay                     : 100
+CmdexeDelay                   : 25
+SyncLoops                     : 32
+ByteDelay                     : 0
+PollIndex                     : 3
+PollValue                     : 0x53
+Memory Detail                 :
+
+                         Block Poll               Page                       Polled
+  Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
+  ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
+  eeprom        65    20     4    0 no       1024    4      0  9000  9000 0x00 0x00
+  flash         65     6   128    0 yes     32768  128    256  4500  4500 0x00 0x00
+  lfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
+  hfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
+  efuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
+  lock           0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
+  calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00
+  signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00
+```

SOFTWARE/A64-TERES/TERES-KBD-RELEASE/Keyboard_firmware/dumpall

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+# This script dumps the entire contents of all the memory types from the chip into a dated subfolder.
+
+dir="$(date --iso=minutes)".dump
+PORT=/dev/ttyACM0
+PROGRAMMER=stk500v2
+CHIP=m32u4
+AVRDUDE="avrdude -p $CHIP -c $PROGRAMMER -P $PORT"
+
+# test connection
+$AVRDUDE -U signature:r:/dev/stderr:i || exit 1
+
+# dump
+mkdir "$dir"
+cd "$dir"
+$AVRDUDE -n $(
+	# output memtype dumping parameters
+	for memtype in $(
+		# output memtypes
+		echo part |
+			$AVRDUDE -t -n |
+			sed -ne 's/^  \([a-z]*\).*/\1/p'
+	)
+	do
+		echo -U ${memtype}:r:${memtype}.raw:r
+	done
+)