31
General discussion / Re: good and cheap usb microscope
What do you think about this very cheap one:
http://www.dealextreme.com/p/digimicro- ... 743?item=2
I plan to buy a stuff like that.
Best Regards
Benjamin
Messages
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Messages - TitanMKD
What do you think about this very cheap one:
http://www.dealextreme.com/p/digimicro- ... 743?item=2
I plan to buy a stuff like that.
Best Regards
Benjamin
32
Client software / Re: Client beta testers
I'm just testing it (with WindowsXP SP3), and it's amazing, very smooth display, very promising.
1st Bug found:
I use extreme case ;-)
I have a Serial Baud configured to 5.25MegaBauds (on channel 10) and even without any cursor when i set manually to 5250000 and I click on Analyze the plugin tell me 5263157 (exact: 5263157) and Decoded bytes 0, Detected bus errors 0 and no data when in fact there's lot of data which work fine when I read them with my PC and FT2232H.
2nd Bug:
If I set cursor 1 and cursor 2 on Channel 10 to check the Frequency and I choose "2: Measure" display Cursor A is 0 or 1 but display tell me it's 1 and 2 and Frequency us NaNmHz ... except time with is 2.67us.
Things I would like:
* Refresh bug to fix for example when scrolling Cursor it disappear (but it is a beta).
* Add the possibility to click on Left Mouse Button and move mouse left or right to scroll the signals to left or right like before.
* Coloured channels like before.
* Options to Enable/Disable Scope/Summary
See by attachment my ols file [attachment=0]
Best Regards
Benjamin
33
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
It is planned to release the source code but it take time to clean up and fix the last bugs and I need to document the whole stuff which imply multiple hardware connections.
About project progress:
Now the sniffer output sniffed data in formated ASCII at 1.7Megabauds on an other USART with DMA (it still respect hard real-time of 8us between 2 received frame).
See an extract of Mifare One(Credit Card format) communication sniffed:
This example just read sector 0 (Block 0 to 3) and start to read sector 1 (Block 0).
This extract contains following ISO14443A & Mifare communication details:
Mifare Card UID for this test: cd 81 5f 76
ISO/IEC FCD 14443-3 TypeA:
- Wakeup(52)
- ATQA (04 00)
- Selection (93 70 ...)
- SAK (08 ...)
- Mifare Authenticate block 0x00 using key A (60 00 ...)
- Mifare Tag nonce/Tag Challenge (0c 1c 6e 28)
- Mifare Reader nonce/Reader challenge (a6 e1 31 35) & response/Reader Response (f7 0c a7 d4)
- Mifare Tag response (7f a1 58 7c)
- Mifare Read one block (bb f4 57 09 => Crypted)
- Mifare Data for Block 0 (a1 63 ... => Crypted)
and so on ...
- 4 "space" characters (it is the PCD) followed by data.
- "TAG " characters (it is the PICC) followed by data.
Code: [Select]
Extract of Output Trace
...
52
TAG 04 00
93 70 cd 81 5f 76 65 d1 86
TAG 08 b6 dd
60 00 f5 7b
TAG 0c 1c 6e 28
a6 e1 31 35 f7 0c a7 d4
TAG 7f a1 58 7c
bb f4 57 09
TAG a1 63 a4 b9 4b 2c ca 2a bc 35 dd 9b c7 12 8e 8a 64 77
31 9a 88 aa
TAG f5 a8 04 d2 af db 01 b3 55 b6 07 9c 62 da ec 63 b3 eb
3b 2a 3f f9
TAG ff fa c0 bf 8c e5 64 87 24 59 57 93 d7 b4 26 bb c2 4b
f9 d7 ad 12
TAG 61 38 0b 23 93 c7 c6 3b 62 8a 62 47 9c e4 13 e5 c2 79
a1 a5 d5 bc
TAG 14 80 a1 a6
a8 68 98 fc cd 7c c3 85
TAG bb 5f c6 8b
ee 72 ba 72
TAG 1d f7 a8 a0 f7 98 bd ee 68 52 34 37 c5 10 cb 65 8a 6c
...
Best Regards
Benjamin
34
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
Just a little news about project progress.
I have ported the TRF7970AEVM Firmware to STM32F4 Discovery board and it work fine (I have not tested the peer to peer mode it is in todo list) to read/write ISO/IEC 15693 Vicinity Tags, or to read Mifare Card ISO14443A, I have not tested ISO14443B or Felica because I have not such TAG (but it is planned).
The big news is I have also developed a NFC ISO14443A sniffer (with both side PICC and PCD) and tested it with success on Mifare One/Classic Card reading a whole sector by sniffing a Mifare One communicating with a PN532+PIC32 UBW32(An other project I have wrote from scratch including PN532 C driver).
I plan to do a video soon.
Best Regards
Benjamin
35
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
About Proxmark3 it is just an amazing hardware and the software is also very good even if it is now a bit limited by hardware resource, to have features like Proxmark3 it is tons of work and research and the major problem is the price of such hardware about 300US$.
About ISO14443 I plan to support ISO14443A which is the most common (with billions of cards like Mifare One ...) and maybe B later (both can be sniffed easily).
About ISO15693 sniffer I do not know if it is possible to sniff it, It needs more research/test with TRF7970A.
About CortexA15 support I think it's too complex and expensive for such hardware (requires BGA ...), I do not want to do an Android Phone ;-) the idea is to do real time embedded stuff with something like Dual Core M4 with maybe even an FPGA all in one, which is not too expensive (less than 50US$).
But this project cannot be done alone some other developers shall participate because the huge work is on firmware like you can see on other project with fantastic hardware like Pandaboard it is nothing if you do not have good software (example even today my Pandaboard cannot play Full HD movie at 24fps, but the hardware can ...).
Best Regards
Benjamin
36
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
Thank you[/quote]
Hi carpas,
The sch and brd are not pusblished, but it is planned in fact you are the first one to ask for it.
Maybe it will be great to publish them on Dangerous Prototypes SVN.
Anyway to solder QFN that requires hot air and good practice because it's very hard to test if all is good and you can have really weird behaviour if it's badly soldered.
I also maybe plan to do a new project 100% open source on Kickstarter to include NFC support and a powerful µC (multi core ARM based) to build a Hacker/Developer/Tester tools like BusPirate including NFC analyzer(with features like Proxmark3) and other cool high speed protocol analyzer/debugger ... like BusPirate and why not some possible extension for BlueTooth, Zigbee, Wifi ...
Best Regards
Benjamin
37
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
Just be-careful on my own board TRF7970A breakout board I need following connection to have a working TRF7970A (in SPI mode with SS):
Connect TRF "EN", "IO1_NCS_GND" and "IO2_VDD_IO_X" signals to +VCC.
Else maybe you have other problem like TRF7970A not soldered correctly or a problem on the PCB.
I have also a very interesting news, I have finished to port TI TRF7970A EVM Firmware to my STM32F4 Discovery board with chibios and that work like a charm, I use the standard TRF7970A_EVM_GUI.exe GUI and I can read UID and read/write memory of ISO15693 tag, I can read UID of Mifare Card or select the card, I can do lot of other stuff but next step is to test Peer to Peer with 2 TRF7970A board one with STM32F4 and the other with PIC32MX but I need to port the TI TRF7970A EVM Firmware to PIC32 before.
I'm also testing Card Emulator mode with the TRF7970A and the bad things is it seems not possible to emulate card as ISO14443A like Mifare card (tested with my Nexus S as read and I receive only Interrupt with IRQ Status flag = 0x4 (RF field change) and SDD completed never happen) and only ISO14443B Card Emulation seems supported like in the example of EVM source code(but I have not tested it).
Maybe I will need to use direct mode 0 because ASK 100% modulation seems to be not managed (only OOK, ASK 7%, 8.5%,10%, 13%, 16%, 22% and 30% are managed in Modulator and SYS_CLK Control Register (0x09))
Because in 14443A standards it's wrote:
PCD -> PICC – Communication Type A => Use Miller Modified => ASK 100% (in my case in Card Emulation TRF7970A act as PICC so I receive ASK 100% and I shall receive WUPA/REQA)
and
PICC-> PCD - Communication Type A => Use Manchester => OOK (in my case in Card Emulation TRF7970A act as PICC so I send reply using OOK)
Best Regards
Benjamin
38
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
im confused though, why did you put the DangerousPrototypes logo on it? Its not a dangerous prototypes product.
Also you put 'fulfillment by SEEEDSTUDIO' when it was not. You just ordered a couple PCBs to be designed from a factory near them so they could charge you a few bucks to middle man it. They didnt 'fulfill' anything except your personal PCB order.
It just seems weird to me; like you assumed this design was so kick-ass that you wanted to show people 'this is what it could look like if it was YOUR product, not mine'.
Thats like me putting a 'SparkFun' logo on my design? Doesn't seem right does it? I dont even like sparkfun (makrup is crazy)[/quote]
Hi BrentBXR,
Yes it's not Dangerous Prototypes but it's mine, but it's planned to be a dangerous prototypes, such stuff are wrote because I used the DP logo/cartridge in Eagle (and it's also to promote DangerousPrototypes stuff which are really cool) sorry for the confusion it's just a first batch of what could be the final DP/SeeedStudio breakout board.
Now all work fine, the question is how to convert it to DP hardware and produce it by Seeed ...
Sorry for the confusion...
Best Regards,
Benjamin
39
Project development, ideas, and suggestions / Test of TRF7970A Breakout Board V1 with BusPirateV3
Hardware requirement:
BusPirate V3 or V4 (shortcut BP).
TRF7970A BreakOut Board V1 (shortcut TRF).
Hardware Configuration for SPI mode with ChipSelect
Warning Never connect 2 different power Input on both +VCC/3V3.
Only one power supply shall be connected to +VCC or to 3V3. (+VCC and 3V3 are linked together on the same line).
Nota1: 3V3 can be connected to +5V or +3V on BusPirate.
Nota2: 3V3 or +VCC accept input voltage from +2.7V to +5.5V.
TRF7970A BreakOut Board V1 connections:
Connect TRF "IO0_GND" signal to TRF "GND".
Connect TRF "EN", "IO1_NCS_GND" and "IO2_VDD_IO_X" signals to TRF "+VCC".
Connect TRF "MOSI" signal to BP "MOSI".
Connect TRF "CLK" signal to BP "CLK".
Connect TRF "MISO" signal to BP "MISO".
Connect TRF "CS" signal to BP "CS".
Connect TRF "3V3" signal to BP "3V3" or "5V".
Connect TRF "GND" signal to BP "GND".
With this configuration, other signals shall not be connected (except optional TRF "MOD", "IRQ" or "ASK_OOK" signals).
SPI Configuration:
CPOL=0 (Clock is Low when inactive)
CPHA=1(Data is Valid on Clock Trailing Edge)
CS Active Low
BusPirate V3 configuration
Quote
HiZ>m 5 3 1 1 1 2 2
SPI (spd ckp ske smp csl hiz)=( 3 0 0 0 1 0 )
Ready
SPI>W
Power supplies ON
SPI>i
SPI>i
Bus Pirate v3b
Firmware v5.10 (r559) Bootloader v4.4
DEVID:0x0447 REVID:0x3043 (24FJ64GA002 B5)
http://dangerousprototypes.com
CFG1:0xFFDF CFG2:0xFF7F
*----------*
Pinstates:
1.(BR) 2.(RD) 3.(OR) 4.(YW) 5.(GN) 6.(BL) 7.(PU) 8.(GR) 9.(WT) 0.(Blk)
GND 3.3V 5.0V ADC VPU AUX CLK MOSI CS MISO
P P P I I I O O O I
GND 2.21V 0.00V 0.00V 0.00V L L L H L
Power supplies OFF, Pull-up resistors OFF, Normal outputs (H=3.3v, L=GND)
MSB set: MOST sig bit first, Number of bits read/write: 8
a/A/@ controls AUX pin
SPI (spd ckp ske smp csl hiz)=( 3 0 0 0 1 0 )
*----------*
TRF7970A command (Table 5-10. Address/Command Word Bit Distribution):
Bit Description Bit Function Address Command
B7 Command control bit 0 = address 0 1 1 = command
B6 Read/Write 0 = write R/W 0 1 = read
B5 Continuous address mode 1 = Continuous mode R/W 0
B4 Address/Command bit 4 Adr 4 Cmd 4
B3 Address/Command bit 3 Adr 3 Cmd 3
B2 Address/Command bit 2 Adr 2 Cmd 2
B1 Address/Command bit 1 Adr 1 Cmd 1
B0 Address/Command bit 0 Adr 0 Cmd 0
Example commands:
SpiDirectCommand:
1stByte = ((0x80 | CommandCode)) & 0x9f
Software Initialization (0x03):
1stByte = 0x83
[0x83]
Reset 0x09 (Reset FIFO):
[0x89]
SpiReadSingle (Read Register Addr):
RegisterAddr=0x1A (TestRegister R/W)
1stByte = AddressCommand (0x40|RegisterAddr) | (0x5F&RegisterAddr) = 0x5A
SpiWriteSingle (Write Register Addr):
RegisterAddr=0x1A (TestRegister R/W)
1stByte = AddressCommand (0x1F&RegisterAddr) = 0x1A
Read Register 0x1A:
[0x5A r]
Write Register 0x1A with value 0x12:
1stByte = AddressCommand (0x40|RegisterAddr) | (0x5F&RegisterAddr) = 0x5A
[0x1A 0x12]
Read Register 0x1B:
[0x5B r]
Write Register 0x1B with value 0x13:
1stByte = AddressCommand (0x40|RegisterAddr) | (0x5F&RegisterAddr) = 0x5A
[0x1B 0x13]
Read Chip Status Control Register (0x00)(Default Value 0x01):
[0x40 r]
Read ISO Control Register (0x01)(Default Value 0x02):
[0x41 r]
Read Modulator and SYS_CLK Control Register (0x09):
[0x49 r]
Write Modulator and SYS_CLK Control Register (0x09) (13.56Mhz SYS_CLK and default Clock 13.56Mhz)):
[0x09 0x31]
Read Regulator and I/O Control Register (0x0B):
[0x4B r]
Write Regulator and I/O Control Register (0x0B):
[0x0B 0x00]
Read FIFO Status Register (0x1C)
[0x5C r]
RSSI levels and oscillator status (0x0F)
[0x4F r]
Continuous Read and Clear IRQ Status (0x0C) (required a dummy read)
[0x6C r:2]
Continuous Read from Addr 0x00 to addr 0x05:
[0x60 r:6]
Continuous Read from Fifo Addr 0x1F:
[0x7F r:9]
Send Data in Fifo:
[0x8F 0x91 0x3D 0x00 0x30 0x26 0x01 0x00]
0x8F = Reset FIFO
0x91 = Send With CRC
0x3D = Write Continuous (Start at 0x1D => TX Length Byte1 & Byte2)
0x00 0x30 = Number of Bytes to be sent (0x30 = 3bytes @0x1D & 0x1E)
0x26 = Request Flags (FIFO TX 1st Data @0x1F)
0x01 = Inventory Command (FIFO TX 2nd Data @0x20)
0x00 = Mask (FIFO TX 3rd Data @0x21)
For more details on TRF7970A chipset see datasheet http://http://www.ti.com/litv/pdf/slos743
Before to initialize chipset to ISO15693 or ISO14443A, you should launch BusPirate V3 configuration "m 5 3 1 1 1 2 2" then "W" then put the NFC card(depending on example ISO15693 or ISO14443A card) on the antenna and execute step 1) to 5) of the chosen example.
Initialize the chipset ISO15693 and read UID:
1) Reset
[0x83]
2) Write Modulator and SYS_CLK Control Register (0x09) (13.56Mhz SYS_CLK and default Clock 13.56Mhz))
[0x09 0x31]
3) Configure Mode ISO Control Register (0x01) to 0x02 (ISO15693 high bit rate, one subcarrier, 1 out of 4)
[0x01 0x02]
4) Turn RF ON (Chip Status Control Register (0x00))
[0x40 r] [0x00 0x20] [0x40 r]
5) Inventory Command (see Figure 5-20. Inventory Command Sent From MCU to TRF7970A)
5-1) Send Inventory(8B), Wait 2ms, Read/Clear IRQ Status(0x0C=>0x6C)+dummy read, Read FIFO Status Register(0x1C/0x5C), Read Continuous FIFO from 0x1F to 0x1F+0x0A(0x1F/0x7F), Read/Clear IRQ Status(0x0C=>0x6C)+dummy read, Read FIFO Status Register(0x1C/0x5C), Reset FIFO(0x0F/0x8F), Read RSSI levels and oscillator status(0x0F/0x4F)
[0x8F 0x91 0x3D 0x00 0x30 0x26 0x01 0x00] %:2 [0x6C r:2] [0x5C r] [0x7F r:10] %:10 [0x6C r:2] [0x5C r] [0x8F] [0x4F r]
Quote
Result example:In this example UID is: 0xE0 0x04 0x01 0x44 0x55 0x66 0x77 0x88 (the first 2 bytes shall be always 0x00 0x00)
/CS ENABLED
WRITE: 0x8F
WRITE: 0x91
WRITE: 0x3D
WRITE: 0x00
WRITE: 0x30
WRITE: 0x26
WRITE: 0x01
WRITE: 0x00
/CS DISABLED
DELAY 2ms
/CS ENABLED
WRITE: 0x6C
READ: 0x00 0x3E
/CS DISABLED
/CS ENABLED
WRITE: 0x5C
READ: 0x0A
/CS DISABLED
/CS ENABLED
WRITE: 0x7F
READ: 0x00 0x00 0x88 0x77 0x66 0x55 0x44 0x01 0x04 0xE0
/CS DISABLED
DELAY 10ms
/CS ENABLED
WRITE: 0x6C
READ: 0x00 0x3E
/CS DISABLED
/CS ENABLED
WRITE: 0x5C
READ: 0x00
/CS DISABLED
/CS ENABLED
WRITE: 0x8F
/CS DISABLED
/CS ENABLED
WRITE: 0x4F
READ: 0x7F
/CS DISABLED
The last data READ: 0x7F correspond to RSSI levels.
For more details on ISO15693 (especially Inventory, Read/Write block ...) see document ISO/IEC FCD 15693-3
Initialize the chipset ISO14443A (Mifare One) and read UID:
1) Reset
[0x83]
2) Write&Read Modulator and SYS_CLK Control Register (0x09) (13.56Mhz SYS_CLK and default Clock 13.56Mhz))
[0x09 0x31] [0x49 r]
3) Configure&Read Mode ISO Control Register (0x01) to 0x88 (ISO14443A RX bit rate, 106 kbps) and no RX CRC (CRC is not present in the response))
[0x01 0x88] [0x41 r]
4) Turn RF ON (Chip Status Control Register (0x00)) and Read It
[0x00 0x20] [0x40 r]
5) REQA & WUPA command (Anticollision)
5-1) Disable CRC Calc(0x01), Send Raw REQA no CRC(1B), wait 10ms, Read/Clear IRQ Status(0x0C=>0x6C)+dummy read, Read FIFO Status Register(0x1C/0x5C), Read Continuous FIFO from 0x1F to 0x1F+1(0x1F/0x7F) Read ATQA, Reset FIFO(0x0F/0x8F), Read RSSI levels and oscillator status(0x0F/0x4F), wait 20ms, Send Raw AntiColl(2B), wait 5ms, Read/Clear IRQ Status(0x0C=>0x6C)+dummy read, Read FIFO Status Register(0x1C/0x5C), Read Continuous FIFO from 0x1F to 0x1F+0x05(0x1F/0x7F), wait 10ms, Read/Clear IRQ Status(0x0C=>0x6C)+dummy read, Reset FIFO(0x0F/0x8F), Read RSSI levels and oscillator status(0x0F/0x4F)
[0x01 0x88] [0x8F 0x90 0x3D 0x00 0x0F 0x26] %:10 [0x6C r:2] [0x5C r] [0x7F r:2] [0x8F] [0x4F r] %:20 [0x8F 0x90 0x3D 0x00 0x20 0x93 0x20] %:5 [0x6C r:2] [0x5C r] [0x7F r:5] %:10 [0x6C r:2] [0x8F] [0x4F r]
Quote
Result example:In this example UID is: 0xCD 0x88 0x77 0x66 (The last Byte "0x00" (intentionally wrong in is example) is BCC calculated as exclusive-or over the 4 previous bytes which is wrong this example)
/CS ENABLED
WRITE: 0x01
WRITE: 0x88
/CS DISABLED
/CS ENABLED
WRITE: 0x8F
WRITE: 0x90
WRITE: 0x3D
WRITE: 0x00
WRITE: 0x0F
WRITE: 0x26
/CS DISABLED
DELAY 10ms
/CS ENABLED
WRITE: 0x6C
READ: 0xC0 0x3E
/CS DISABLED
/CS ENABLED
WRITE: 0x5C
READ: 0x02
/CS DISABLED
/CS ENABLED
WRITE: 0x7F
READ: 0x04 0x00
/CS DISABLED
/CS ENABLED
WRITE: 0x8F
/CS DISABLED
/CS ENABLED
WRITE: 0x4F
READ: 0x7F
/CS DISABLED
DELAY 20ms
/CS ENABLED
WRITE: 0x8F
WRITE: 0x90
WRITE: 0x3D
WRITE: 0x00
WRITE: 0x20
WRITE: 0x93
WRITE: 0x20
/CS DISABLED
DELAY 5ms
/CS ENABLED
WRITE: 0x6C
READ: 0xC0 0x3E
/CS DISABLED
/CS ENABLED
WRITE: 0x5C
READ: 0x05
/CS DISABLED
/CS ENABLED
WRITE: 0x7F
READ: 0xCD 0x88 0x77 0x66 0x00
/CS DISABLED
DELAY 10ms
/CS ENABLED
WRITE: 0x6C
READ: 0x00 0x3E
/CS DISABLED
/CS ENABLED
WRITE: 0x8F
/CS DISABLED
/CS ENABLED
WRITE: 0x4F
READ: 0x7F
/CS DISABLED
The last data READ: 0x7F correspond to RSSI levels.
Nota: This example is very basic and for basic test purpose and do not respect the anticollision mechanism which requires additional data after UID is received.
For more details on ISO14443 (especially Initialization and anticollision) see document ISO/IEC FCD 14443-3.
40
Project development, ideas, and suggestions / Re: RFID Reader/Writer: OpenPCD?
If you are interested in a cheap very versatile RFID (13.56Mhz) Read/Writer/Emulator you can read the thread about my TRF7970A Breakout board which even work basicly (to read UID) with a BusPirate.
The link is here http://http://dangerousprototypes.com/forum/viewtopic.php?f=19&t=3187
Best Regards
Benjamin
41
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
I personally greatly would like to learn how to make RF enabled devices using RF enabled ic's such as some pic's, but it seems like dark magic to me still.
I see in the datasheet that it lists the components for the RF part of the circuit, is it a good idea to stick with the exact same component values as shown in the datasheet, or do they require changing for each circuit? How did you get the antenna design for it, did you fetch it from a evaluation board or did you design it all your self?
Awesome build by the way! Very clean and organized looking board.[/quote]
I have designed the antenna using Reference design and datasheet based on TRF7970A and TRF7960.
About how to make RF enabled devices the easy way is to use reference design, else you can also build your own antenna design but you will need tuning with oscilloscope and other tools to check impedance matching for 13.56MHz NFC antenna (around 40 to 50 Ohm) to obtain the best power and the hard part will be to calculate each components depending on the antenna length
I will advise you such documents:
TF796x HF-RFID Reader Layout Design Guide - Ref Texas Instrument SLOA139–April 2009
NFC Design Antenna - Ref Texas Instrument AN144411
Tool for NFC Antenna Design from http://fritz.dellsperger.net/downloads.htm
Best Regards
Benjamin
42
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
After some tests on the board (with a BPv3) and especially on antenna with ISO15693 / ISO14443A(Mifare ...), all work fine and results are even better than expected, on ISO15693 and ISO14443A(Mifare One) Card (type credit card) the UID is read at 10cm of the reader !! so the theoretic maximum is reached, of course I use maximum power 200mW by default, but I will try later with half power to check.
Next Time I will write a tutorial on how to init TRF7970A and read UID for ISO15693 and ISO14443A NFC cards with a Bus Pirate and TRF7970A next time.
Best Regards
Benjamin
43
Project development, ideas, and suggestions / Re: NFC TI TRF7970A Breakout Board for BusPirate or other HW
I have received the 10 PCB from Seeed Studio (and they seems to be all tested with a blue mark thanks Seeed for that amazing PCB).
I have build the first PCB and all seems to work fine Power (Blue Led) is OK, no shortcut and Output Frequency (SYS_CLK) is also OK 3.88MHz (with my Extech EX330 Multimeter) (expected 3.90MHz).
I have also Tested 5V, 3.3V and 3V with STM4F Discovery and all work fine.
Next step will be to port TR7970A TI source code on PIC32/STM4F Discovery board to check if NFC really works.
TRF7970A BreakoutBoard V1.0 PCB:
[attachment=2]
TRF7970A BreakoutBoard V1.0 with all components soldered:
[attachment=1]
TRF7970A BreakoutBoard V1.0 first test with STMF4 Discovery:
[attachment=0]
44
Project development, ideas, and suggestions / Re: Reversing hardware find what is it
45