FreeCalypso > hg > freecalypso-hwlab
annotate eeproms/jtag-unbuf @ 129:2adb802b2a98
fc-simtool: verify-ext command implemented
| author | Mychaela Falconia <falcon@freecalypso.org> | 
|---|---|
| date | Tue, 02 Feb 2021 17:12:17 +0000 | 
| parents | 1d38af6d7be8 | 
| children | 
| rev | line source | 
|---|---|
| 
32
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
1 # This EEPROM configuration is meant to be programmed into COTS FT2232D | 
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60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
2 # breakout boards used as unbuffered JTAG adapters. The custom USB VID:PID | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
3 # belongs to Falconia Partners LLC; we hereby allow the community to program | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
4 # this PID into generic FT2232D boards (not made by Falconia) as long as | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
5 # it is used for the present purpose with this full EEPROM configuration. | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
6 # | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
7 # The purpose of having a custom USB ID is to prevent the Linux kernel | 
| 
80
 
1d38af6d7be8
0403:7151 USB ID support in mainline Linux
 
Mychaela Falconia <falcon@freecalypso.org> 
parents: 
52 
diff
changeset
 | 
8 # ftdi_sio driver from treating this FT2232D instance as a dual UART and | 
| 
 
1d38af6d7be8
0403:7151 USB ID support in mainline Linux
 
Mychaela Falconia <falcon@freecalypso.org> 
parents: 
52 
diff
changeset
 | 
9 # creating a ttyUSB device for Channel A. If you wish to use Channel B | 
| 
 
1d38af6d7be8
0403:7151 USB ID support in mainline Linux
 
Mychaela Falconia <falcon@freecalypso.org> 
parents: 
52 
diff
changeset
 | 
10 # as a UART (which is still available for that purpose), you will need to use | 
| 
 
1d38af6d7be8
0403:7151 USB ID support in mainline Linux
 
Mychaela Falconia <falcon@freecalypso.org> 
parents: 
52 
diff
changeset
 | 
11 # a Linux kernel version with commit 6cf87e5edd9944e1d3b6efd966ea401effc304ee | 
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1d38af6d7be8
0403:7151 USB ID support in mainline Linux
 
Mychaela Falconia <falcon@freecalypso.org> 
parents: 
52 
diff
changeset
 | 
12 # included, or apply that commit locally if your kernel version does not | 
| 
 
1d38af6d7be8
0403:7151 USB ID support in mainline Linux
 
Mychaela Falconia <falcon@freecalypso.org> 
parents: 
52 
diff
changeset
 | 
13 # include it. | 
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32
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
14 | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
15 vid 0x0403 # FTDI | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
16 pid 0x7151 # Allocated by FTDI to Falconia Partners LLC | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
17 manuf FTDI | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
18 product Unbuffered JTAG adapter | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
19 | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
20 # We program Channel A to come up in the 245 FIFO mode prior to being | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
21 # switched into MPSSE mode by OpenOCD, as opposed to the default 232 UART mode. | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
22 # If the FT2232D chip's ADBUS pins are connected directly to the JTAG target | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
23 # without a buffer (what we mean by an unbuffered JTAG adapter), the default | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
24 # 232 UART mode is NOT safe, as it will produce a fight on the ADBUS2 line | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
25 # between the UART RTS output and the target's TDO output. 245 FIFO mode is | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
26 # expected to be safer, as all 8 ADBUS lines will be inputs for as long as | 
| 
52
 
ace3ed1d5ddf
Unbuffered FT2232x JTAG article written
 
Mychaela Falconia <falcon@freecalypso.org> 
parents: 
32 
diff
changeset
 | 
27 # the ACBUS2 line is left unconnected and not driven by anything. | 
| 
32
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
28 | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
29 byte00 0x01 # Channel A: FIFO mode, D2XX driver | 
| 
 
60b8cf977c3f
unbuffered JTAG adapters: ID assigned and EEPROM config created
 
Mychaela Falconia <falcon@freecalypso.org> 
parents:  
diff
changeset
 | 
30 byte01 0x08 # Channel B: UART mode, VCP driver | 
