1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
/** \file
*
* This file contains special DoxyGen information for the generation of the main page and other special
* documentation pages. It is not a project source file.
*/
/** \mainpage AVRISP MKII Programmer Project
*
* \section SSec_Compat Project Compatibility:
*
* The following list indicates what microcontrollers are compatible with this project.
*
* - Series 7 USB AVRs (AT90USBxxx7)
* - Series 6 USB AVRs (AT90USBxxx6)
* - Series 4 USB AVRs (ATMEGAxxU4)
* - Series 2 USB AVRs (AT90USBxx2, ATMEGAxxU2) - <i>8KB versions with reduced features only</i>
*
* \section SSec_Info USB Information:
*
* The following table gives a rundown of the USB utilization of this project.
*
* <table>
* <tr>
* <td><b>USB Mode:</b></td>
* <td>Device</td>
* </tr>
* <tr>
* <td><b>USB Class:</b></td>
* <td>Vendor Specific Class</td>
* </tr>
* <tr>
* <td><b>USB Subclass:</b></td>
* <td>N/A</td>
* </tr>
* <tr>
* <td><b>Relevant Standards:</b></td>
* <td>Atmel AVRISP MKII Protocol Specification</td>
* </tr>
* <tr>
* <td><b>Usable Speeds:</b></td>
* <td>Full Speed Mode</td>
* </tr>
* </table>
*
* \section SSec_Description Project Description:
*
* Firmware for an AVRStudio compatible AVRISP-MKII clone programmer. This project will enable the USB AVR series of
* microcontrollers to act as a clone of the official Atmel AVRISP-MKII programmer, usable within AVRStudio. In its
* most basic form, it allows for the programming of 5V AVRs from within AVRStudio with no special hardware other than
* the USB AVR and the parts needed for the USB interface. If the user desires, more advanced circuits incorporating
* level conversion can be made to allow for the programming of 3.3V AVR designs.
*
* This device spoofs Atmel's official AVRISP-MKII device PID so that it remains compatible with Atmel's AVRISP-MKII
* drivers. When prompted, direct your OS to install Atmel's AVRISP-MKII drivers provided with AVRStudio.
*
* Note that this design currently has the following limitations:
* - No reversed/shorted target connector detection and notification
* - A separate header is required for each of the ISP, PDI and TPI programming protocols that the user wishes to use
*
* On AVR models with an ADC converter, AVCC should be tied to 5V (e.g. VBUS) and the VTARGET_ADC_CHANNEL token should be
* set to an appropriate ADC channel number in the project makefile for VTARGET detection to operate correctly. On models
* without an ADC converter, VTARGET will report a fixed 5V level at all times.
*
* While this application can be compiled for USB AVRs with as little as 8KB of FLASH, for full functionality 16KB or more
* of FLASH is required. On 8KB devices, ISP or PDI/TPI programming support can be disabled to reduce program size.
*
* \section Sec_ISP ISP Connections
* Connections to the device for SPI programming (when enabled):
*
* <table>
* <tr>
* <td><b>Programmer Pin:</b></td>
* <td><b>Target Device Pin:</b></td>
* <td><b>ISP 6 Pin Layout:</b></td>
* </tr>
* <tr>
* <td>MISO</td>
* <td>PDO</td>
* <td>1</td>
* </tr>
* <tr>
* <td>ADCx <b><sup>1</sup></b></td>
* <td>VTARGET</td>
* <td>2</td>
* </tr>
* <tr>
* <td>SCLK</td>
* <td>SCLK</td>
* <td>3</td>
* </tr>
* <tr>
* <td>MOSI</td>
* <td>PDI</td>
* <td>4</td>
* </tr>
* <tr>
* <td>PORTx.y <b><sup>2</sup></b></td>
* <td>/RESET</td>
* <td>5</td>
* </tr>
* <tr>
* <td>GND</td>
* <td>GND</td>
* <td>6</td>
* </tr>
* </table>
*
* In addition, the AVR's XCK pin will generate a .5MHz clock when SPI programming is used, to act as an external
* device clock if the fuses have been mis-set. To use the recovery clock, connect XCK to the target AVR's XTAL1
* pin, and set the ISP programming speed to 125KHz or below.
*
* <b><sup>1</sup></b> <i>Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only</i> \n
* <b><sup>2</sup></b> <i>See AUX line related tokens in the \ref SSec_Options section</i>
*
* \section Sec_PDI PDI Connections
* Connections to the device for PDI programming (when enabled):
*
* <table>
* <tr>
* <td><b>Programmer Pin:</b></td>
* <td><b>Target Device Pin:</b></td>
* <td><b>PDI 6 Pin Layout:</b></td>
* </tr>
* <tr>
* <td>Tx/Rx <b><sup>2</sup></b></td>
* <td>DATA</td>
* <td>1</td>
* </tr>
* <tr>
* <td>ADCx <b><sup>1</sup></b></td>
* <td>VTARGET</td>
* <td>2</td>
* </tr>
* <tr>
* <td>N/A</td>
* <td>N/A</td>
* <td>3</td>
* </tr>
* <tr>
* <td>N/A</td>
* <td>N/A</td>
* <td>4</td>
* </tr>
* <tr>
* <td>XCK</td>
* <td>CLOCK</td>
* <td>5</td>
* </tr>
* <tr>
* <td>GND</td>
* <td>GND</td>
* <td>6</td>
* </tr>
* </table>
*
* <b><sup>1</sup></b> <i>Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only</i> \n
* <b><sup>2</sup></b> <i>The AVR's Tx and Rx become the DATA line when connected together via a pair of 220 ohm resistors</i> \n
*
* \section Sec_TPI TPI Connections
* Connections to the device for TPI programming (when enabled):
*
* <table>
* <tr>
* <td><b>Programmer Pin:</b></td>
* <td><b>Target Device Pin:</b></td>
* <td><b>TPI 6 Pin Layout:</b></td>
* </tr>
* <tr>
* <td>Tx/Rx <b><sup>2</sup></b></td>
* <td>DATA</td>
* <td>1</td>
* </tr>
* <tr>
* <td>ADCx <b><sup>1</sup></b></td>
* <td>VTARGET</td>
* <td>2</td>
* </tr>
* <tr>
* <td>XCK <b><sup>2</sup></b></td>
* <td>CLOCK</td>
* <td>3</td>
* </tr>
* <tr>
* <td>N/A</td>
* <td>N/A</td>
* <td>4</td>
* </tr>
* <tr>
* <td>PORTx.y <b><sup>3</sup></b></td>
* <td>/RESET</td>
* <td>5</td>
* </tr>
* <tr>
* <td>GND</td>
* <td>GND</td>
* <td>6</td>
* </tr>
* </table>
*
* <b><sup>1</sup></b> <i>Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only</i> \n
* <b><sup>2</sup></b> <i>The AVR's Tx and Rx become the DATA line when connected together via a pair of 220 ohm resistors</i> \n
* <b><sup>3</sup></b> <i>See AUX line related tokens in the \ref SSec_Options section</i>
*
* \section SSec_Options Project Options
*
* The following defines can be found in this project, which can control the project behaviour when defined, or changed in value.
*
* <table>
* <tr>
* <td><b>Define Name:</b></td>
* <td><b>Location:</b></td>
* <td><b>Description:</b></td>
* </tr>
* <tr>
* <td>AUX_LINE_PORT</td>
* <td>Makefile LUFA_OPTS</td>
* <td>PORT register for the programmer's AUX target line. The use of this line varies between the programming protocols,
* but is generally used for the target's /RESET line. <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
* <tr>
* <td>AUX_LINE_PIN</td>
* <td>Makefile LUFA_OPTS</td>
* <td>PIN register for the programmer's AUX target line. The use of this line varies between the programming protocols,
* but is generally used for the target's /RESET line. <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
* <tr>
* <td>AUX_LINE_DDR</td>
* <td>Makefile LUFA_OPTS</td>
* <td>DDR register for the programmer's AUX target line. The use of this line varies between the programming protocols,
* but is generally used for the target's /RESET line. <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
* <tr>
* <td>AUX_LINE_MASK</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Mask for the programmer's AUX target line. The use of this line varies between the programming protocols,
* but is generally used for the target's /RESET line. <b>Must not be the AVR's /SS pin</b>. <i>Ignored when
* compiled for the XPLAIN board.</i></td>
* </tr>
* <tr>
* <td>VTARGET_ADC_CHANNEL</td>
* <td>Makefile LUFA_OPTS</td>
* <td>ADC channel number (on supported AVRs) to use for VTARGET level detection, if NO_VTARGET_DETECT is not defined.
* <i>Ignored when compiled for targets lacking an ADC.</i></td>
* </tr>
* <tr>
* <td>ENABLE_ISP_PROTOCOL</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Define to enable SPI programming protocol support. <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
* <tr>
* <td>ENABLE_XPROG_PROTOCOL</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Define to enable PDI and TPI programming protocol support. <i>Ignored when compiled for the XPLAIN board.</i></td>
* </tr>
* <tr>
* <td>NO_VTARGET_DETECT</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Define to disable VTARGET sampling and reporting on AVR models with an ADC converter. This will cause the programmer
* to report a fixed 5V target voltage to the host regardless of the real target voltage. <i>Ignored when compiled for
* targets lacking an ADC.</i></td>
* </tr>
* <tr>
* <td>VTARGET_REF_VOLTS</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Indicates the programmer AVR's AVCC reference voltage when measuring the target's supply voltage. Note that the supply
* voltage should never exceed the reference voltage on the programmer AVR without some form of protection to prevent damage
* to the ADC. <i>Ignored when compiled for targets lacking an ADC, or when NO_VTARGET_DETECT is defined.</i></td>
* </tr>
* <tr>
* <td>VTARGET_SCALE_FACTOR</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Indicates the target's supply voltage scale factor when applied to the ADC. A simple resistive divider can be used on the
* ADC pin for measuring the target's supply voltage, so that voltages above the programmer AVR's AVCC reference voltage can be
* measured. This should be the reciprocal of the division performed - e.g. if the VTARGET voltage is halved, this should be set
* to 2. <i>Ignored when compiled for targets lacking an ADC, or when NO_VTARGET_DETECT is defined.</i></td>
* </tr>
* <tr>
* <td>LIBUSB_DRIVER_COMPAT</td>
* <td>Makefile LUFA_OPTS</td>
* <td>Define to switch to a non-standard endpoint scheme, breaking compatibility with AVRStudio under Windows but making
* the code compatible with software such as avrdude (all platforms) that use the libUSB driver.
* </tr>
* </table>
*/
|
