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update new frames doc

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This commit is contained in:
Philippe Teuwen 2019-04-22 01:36:58 +02:00
parent 4d0875442f
commit c4e16ebb9b
1 changed files with 42 additions and 12 deletions

54
doc/new_frame_format.txt
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@ -199,10 +199,12 @@ USART code has been rewritten to cope with unknown size packets.
usart_init:
* USART is activated all way long from usart_init(), no need to touch it in RX/TX routines: pUS1->US_PTCR = AT91C_PDC_RXTEN | AT91C_PDC_TXTEN
usart_writebuffer:
* still using double DMA but accepts arbitrary packet sizes
* removed unneeded memcpy.
* wait for both DMA buffers to be treated before returning (TODO still needed?)
usart_writebuffer_sync:
* still using DMA but accepts arbitrary packet sizes
* removed unneeded memcpy
* wait for DMA buffer to be treated before returning, therefore "sync"
* we could make an async version but caller must be sure the DMA buffer remains available!
* as it's sync, no need for next DMA buffer
usart_read_ng:
* user tells expected packet length
@ -242,16 +244,16 @@ USART_BAUD_RATE defined there
linux usb: #db# USB Transfer Speed PM3 -> Client = 666624 Bytes/s (equiv. to ~7Mbaud)
At some point, when still activating AT91C_PDC_TXTEN in usart_writebuffer, we needed to increase client uart timeout.
We tried 300ms, but then USB flasher failed :
[=] UART Setting serial baudrate 460800
.Found
Error: Unknown Proxmark3 mode
Now we're at 60ms
(uart/uart_posix.c)
// Receiving from USART need more than 30ms as we used on USB
// else we get errors about "Received packet frame ... too short"
// Now we're using 100ms
// FTDI 9600 hw status -> we need 20ms
// FTDI 115200 hw status -> we need 50ms
// FTDI 460800 hw status -> we need 30ms
struct timeval timeout = {
.tv_sec = 0, // 0 second
.tv_usec = 60000 // 60 000 micro seconds
.tv_sec = 0, // 0 second
.tv_usec = 100000 // 100 000 micro seconds
};
Add automatically some communication delay in the WaitForResponseTimeout timeout
@ -274,6 +276,34 @@ uint32_t usart_read_ng(uint8_t *data, size_t len) {
// Let's take 10x
uint32_t maxtry = 10 * ( 3000000 / USART_BAUD_RATE );
DbpStringEx using reply_old:
time client/proxmark3 -p /dev/ttyACM0 -c "hw status"
2.52s
time client/proxmark3 -p /dev/ttyUSB0 -b 460800 -c "hw status"
3.03s
time client/proxmark3 -p /dev/ttyUSB0 -b 115200 -c "hw status"
4.88s
DbpStringEx using reply_old:
time client/proxmark3 -p /dev/ttyUSB0 -b 9600 -c "hw status"
26.5s
DbpStringEx using reply_mix:
time client/proxmark3 -p /dev/ttyUSB0 -b 9600 -c "hw status"
7.08s
DbpStringEx using reply_ng:
time client/proxmark3 -p /dev/ttyACM0 -c "hw status"
2.10s
time client/proxmark3 -p /dev/ttyUSB0 -b 460800 -c "hw status"
2.22s
time client/proxmark3 -p /dev/ttyUSB0 -b 115200 -c "hw status"
2.43s
time client/proxmark3 -p /dev/ttyUSB0 -b 9600 -c "hw status"
5.75s
Reference frames
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