Added updiprog

src/updiprog/.gitignore

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+/updiprog
+/build

src/updiprog/LICENSE

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+BSD 2-Clause License
+
+Copyright (c) 2018, Alex Kiselev
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

src/updiprog/Makefile

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+TARGET=updiprog
+
+SRC := $(wildcard src/*.c)
+OBJ := $(patsubst src/%.c,build/%.o,$(SRC))
+
+CFLAGS += -O3 -Wall -Werror -Isrc
+CFLAGS += -MD -MP -MT $@ -MF build/dep/$(@F).d
+
+
+all: $(TARGET)
+
+$(TARGET): $(OBJ)
+	$(CC) -o $@ $(OBJ) $(LDFLAGS)
+
+build/%.o: src/%.c
+	@mkdir -p $(shell dirname $@)
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+tidy:
+	rm -f *~ \#*
+
+clean: tidy
+	rm -rf build $(TARGET)
+
+.PHONY: all tidy clean
+
+# Dependencies
+-include $(shell mkdir -p build/dep) $(wildcard build/dep/*.d)

src/updiprog/README.md

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+# updiprog
+
+This is UPDI programming software for AVR microcontrollers.  It was based on the
+code at https://github.com/Polarisru/updiprog but has undergone a lot of
+restructuring and has speed and reliability improvements and additional features.
+However, this version does not work on Windows.
+
+```
+                        Vcc                     Vcc
+                        +-+                     +-+
+                         |                       |
+ +---------------------+ |                       | +--------------------+
+ | Serial port         +-+                       +-+  AVR device        |
+ |                     |      +----------+         |                    |
+ |                  TX +------+   1k     +---------+ UPDI               |
+ |                     |      +----------+    |    |                    |
+ |                     |                      |    |                    |
+ |                  RX +----------------------+    |                    |
+ |                     |                           |                    |
+ |                     +--+                     +--+                    |
+ +---------------------+  |                     |  +--------------------+
+                         +-+                   +-+
+                         GND                   GND
+```
+
+# Features
+  - Read/write flash memory
+  - Read/write fuses
+  - Chip erase
+  - Chip reset
+  - Read/write up to 1Gbps
+  - CRC checking
+
+## CRC Check
+You can enable CRC checking with the ``-x`` option.  With this option enabled
+during a FLASH write updiprog will do the following:
+
+  * Read the HEX file
+  * Compute a CRC-16-CCITT
+  * Read the last 2-bytes of FLASH
+  * If the last 2-bytes match the CRC, stop
+  * Otherwise program the FLASH
+  * Write the CRC to the last 2-bytes of FLASH
+
+The end result is that with the ``-x`` option updiprog will not reprogram the
+chip if the CRC indicates that the programmed firmware is the same.
+
+The programmed CRC can also be used with the AVR's CRCSCAN feature.  With
+CRCSCAN enabled, the chip will not run if the CRC at the end of FLASH does not
+match the contents of FLASH memory.
+
+# Options
+```
+updiprog [OPTIONS]
+
+OPTIONS:
+  -b BAUDRATE    - Serial port speed (default=115200)
+  -d DEVICE      - Target device (e.g. tiny321x)
+  -c PORT        - Serial port (e.g. /dev/ttyUSB0)
+  -e             - Chip erase
+  -R             - Chip reset
+  -F             - Read all fuses
+  -f FUSE VALUE  - Write fuse
+  -r FILE.HEX    - Hex file to read FLASH into
+  -w FILE.HEX    - Hex file to write to FLASH
+  -x             - Enable CRC checks
+  -v             - Increase log level. Errors -> Warnings -> All
+  -h             - Show this help screen and exit
+```
+
+# Supported devices
+
+```
+mega480x      mega320x      mega160x      mega80x
+tiny321x      tiny160x      tiny161x      tiny80x
+tiny81x       tiny40x       tiny41x       tiny20x
+tiny21x
+```
+
+# Examples
+
+## Chip Erase
+    updiprog -c /dev/ttyUSB0 -d tiny321x -e
+
+## Program FLASH from HEX file
+    updiprog -c /dev/ttyUSB0 -d tiny321x -w firmware.hex
+
+## Program FLASH from HEX file at 1G BAUD
+    updiprog -c /dev/ttyUSB0 -d tiny321x -w firmware.hex -b 1000000
+
+## Read FLASH to HEX file
+    updiprog -c /dev/ttyUSB0 -d tiny321x -r tiny_fw.hex
+
+## Read all fuses:
+    updiprog -c /dev/ttyUSB0 -d tiny321x -F
+
+## Write 0x04 to fuse number 1 and 0x1b to fuse number 5
+    updiprog -c /dev/ttyUSB0 -d tiny321x -f 1 0x04 -f 5 0x1b
+
+## Program FLASH from HEX file at 1G BAUD with CRC check
+    updiprog -c /dev/ttyUSB0 -d tiny321x -w firmware.hex -b 1000000 -x
+
+## Erase the chip then program FLASH from HEX file at 1G BAUD
+    updiprog -c /dev/ttyUSB0 -d tiny321x -e -w firmware.hex -b 1000000
+
+## Chip Reset
+    updiprog -c /dev/ttyUSB0 -d tiny321x -R

src/updiprog/src/devices.c

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+#include "devices.h"
+
+#include <string.h>
+
+
+device_t devices[] = {
+  {
+    "mega480x",
+    0x4000,
+    48 * 1024,
+    128,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    11
+  }, {
+    "mega320x",
+    0x4000,
+    32 * 1024,
+    128,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    11
+  }, {
+    "mega160x",
+    0x4000,
+    16 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    11
+  }, {
+    "mega80x",
+    0x4000,
+    8 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    11
+  }, {
+    "tiny321x",
+    0x8000,
+    32 * 1024,
+    128,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  }, {
+    "tiny160x",
+    0x8000,
+    16 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  }, {
+    "tiny161x",
+    0x8000,
+    16 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  }, {
+    "tiny80x",
+    0x8000,
+    8 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  }, {
+    "tiny81x",
+    0x8000,
+    8 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  }, {
+    "tiny40x",
+    0x8000,
+    4 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  }, {
+    "tiny41x",
+    0x8000,
+    4 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    11
+  }, {
+    "tiny20x",
+    0x8000,
+    2 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  }, {
+    "tiny21x",
+    0x8000,
+    2 * 1024,
+    64,
+    0x0f00,
+    0x1000,
+    0x1100,
+    0x1280,
+    0x1300,
+    9
+  },
+  {0} // Sentinel
+};
+
+
+device_t *devices_find(char *name) {
+  for (int i = 0; devices[i].name; i++)
+    if (strcmp(name, devices[i].name) == 0)
+      return &devices[i];
+
+  return 0;
+}

src/updiprog/src/devices.h

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+#pragma once
+
+#include <stdint.h>
+
+
+typedef struct {
+  const char *name;
+  uint16_t flash_start;
+  uint16_t flash_size;
+  uint16_t page_size;
+  uint16_t syscfg_address;
+  uint16_t nvmctrl_address;
+  uint16_t sigrow_address;
+  uint16_t fuses_address;
+  uint16_t userrow_address;
+  uint8_t  num_fuses;
+} device_t;
+
+
+extern device_t devices[];
+
+device_t *devices_find(char *name);