github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-21 05:43:48 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

uart high speed tested

Browse source
This commit is contained in:
Philippe Teuwen 2019-05-22 00:05:19 +02:00
commit e22be4b47b
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
doc/uart_notes.md
View file

@ -37,7 +37,7 @@ This USART can be reached from the host client (if connected via USB-CDC) throug
So, `usart config` changes the Proxmark3 USART baudrate and parity, while e.g. `usart txrx d AT+Px` and `usart txrx d AT+BAUDx` changes the BT add-on parity and baudrate.
And for things to work fine, both sets have to match!
Internally, the desired baudrate is converted to UART settings: a BRGR and a FP. The resulting baudrate will be close to but not always equal to the desired baudrate. Serial ports typically have some error tolerance in the actual baudrates. Theoretically < 2.5% on each side (so 5% in total), < 2% to be on the safe side. In the current firmware configuration, the Proxmark3 can provide any baudrate up to 2Mbauds with an error of max 2%, and selected baudrates up to 6Mbauds. TODO to be tested.
Internally, the desired baudrate is converted to UART settings: a BRGR and a FP. The resulting baudrate will be close to but not always equal to the desired baudrate. Serial ports typically have some error tolerance in the actual baudrates. Theoretically < 2.5% on each side (so 5% in total), < 2% to be on the safe side. In the current firmware configuration, the Proxmark3 can provide any baudrate up to 2Mbauds with an error of max 2%, and selected baudrates up to 6Mbauds (tested with a FTDI C232HM DDHSL-0 cable).
## Proxmark3 FPC USART + BT add-on (blue shark)