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usart: clean, doc, now uart_posix 60ms

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Philippe Teuwen
2019-04-21 12:02:30 +02:00
parent 59963eb41e
commit e0cd5850f9
3 changed files with 27 additions and 20 deletions
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18
doc/new_frame_format.txt
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@@ -197,11 +197,25 @@ New bootrom might need to also still support old frame format, to ease flashing
Timings
=======
Needed to increase client RX uart timeout: it was 30ms, we put arbitrarily 300ms as for TCP
(common/usart.h)
USART_BAUD_RATE defined
9600: #db# USB Transfer Speed PM3 -> Client = 934 Bytes/s
115200: #db# USB Transfer Speed PM3 -> Client = 11137 Bytes/s
460800: #db# USB Transfer Speed PM3 -> Client = 43119 Bytes/s
linux usb: #db# USB Transfer Speed PM3 -> Client = 666624 Bytes/s (~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)
struct timeval timeout = {
.tv_sec = 0, // 0 second
.tv_usec = 300000 // 300 000 micro seconds
.tv_usec = 60000 // 60 000 micro seconds
};
Add automatically some communication delay in the WaitForResponseTimeout timeout