AVRISP.txt 4.26 KB
Newer Older
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
/** \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 Demo Compatibility:
 *
 *  The following table indicates what microcontrollers are compatible with this demo.
 *
 *  - AT90USB1287
 *  - AT90USB1286
 *  - AT90USB647
 *  - AT90USB646
 *  - ATMEGA32U6
 *  - ATMEGA32U4
 *  - ATMEGA16U4
 *  - AT90USB162
 *  - AT90USB82
 *
 *  \section SSec_Info USB Information:
 *
 *  The following table gives a rundown of the USB utilization of this demo.
 *
 * <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
53
54
55
56
 *  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.
57
58
59
60
 *
 *  This device spoofs Atmel's official AVRISP-MKII device PID so that it remains compatible with Atmel's AVRISP-MKII
 *  drivers. When promted, direct your OS to install Atmel's AVRISP-MKII drivers provided with AVRStudio.
 *
61
62
63
64
 *  Note that this design currently has several limitations:
 *    - Minimum target clock speed of 500KHz due to hardware SPI used
 *    - No reversed/shorted target connector detection and notification
 *
65
66
67
68
 *  On AVR models with an ADC converter, ACC 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 at a fixed 5V level.
 *
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
 *  Connections to the device are simple:
 *
 *  <table>
 *   <tr>
 *    <td><b>Programmer Pin:</b></td>
 *    <td><b>Target Device Pin:</b></td>
 *   </tr>
 *   <tr>
 *    <td>MOSI</td>
 *    <td>PDI</td>
 *   </tr>
 *   <tr>
 *    <td>MISO</td>
 *    <td>PDO</td>
 *   </tr>
 *   <tr>
 *    <td>SCLK</td>
 *    <td>SCLK</td>
 *   </tr>
 *   <tr>
 *    <td>GND</td>
 *    <td>GND</td>
 *   </tr>
 *   <tr>
 *    <td>ADCx <b><sup>1</sup></b></td>
 *    <td>VTARGET</td>
 *   </tr>
 *   <tr>
 *    <td>PORTx.y <b><sup>2</sup></b></td>
 *    <td>/RESET</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>See \ref SSec_Options section</i>
 *
105
106
107
108
109
110
 *  \section SSec_Options Project Options
 *
 *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
 *
 *  <table>
 *   <tr>
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
 *    <td><b>Define Name:</b></td>
 *    <td><b>Location:</b></td>
 *    <td><b>Description:</b></td>
 *   </tr>
 *   <tr>
 *    <td>RESET_LINE_PORT</td>
 *    <td>Makefile CDEFS</td>
 *    <td>PORT register for the programmer's target RESET line.</td>
 *   </tr>
 *   <tr>
 *    <td>RESET_LINE_DDR</td>
 *    <td>Makefile CDEFS</td>
 *    <td>DDR register for the programmer's target RESET line.</td>
 *   </tr>
 *   <tr>
 *    <td>RESET_LINE_MASK</td>
 *    <td>Makefile CDEFS</td>
128
 *    <td>Mask for the programmer's target RESET line on the chosen port. <b>Must not be the AVR's /SS pin.</b></td>
129
 *   </tr>
130
131
132
133
134
 *   <tr>
 *    <td>VTARGET_ADC_CHANNEL</td>
 *    <td>Makefile CDEFS</td>
 *    <td>ADC channel number (on supported AVRs) to use for VTARGET level detection.</td> 
 *   </tr>
135
136
 *  </table>
 */