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authorRalf Baechle <ralf@linux-mips.org>1999-07-08 06:44:55 +0200
committerRalf Baechle <ralf@linux-mips.org>1999-07-08 06:44:55 +0200
commit5f5d1604492ae15967f9d86f41fbeeedcae0ae2b (patch)
treebcecfd65dc578eabfaee10b1e039c467ac89d8b5 /dmascc/README.dmascc
parent1b4023134b5ff6342301c8135b11df46546d2828 (diff)
Import ax25-tools 0.0.3 from tarballax25-tools-0.0.3
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+The dmascc_cfg utility
+======================
+
+Use this utility to configure the dmascc driver.
+
+Usage:
+------
+
+dmascc_cfg <interface> [ options ... ]
+
+Options:
+--------
+
+--show Show all configurable parameters for this port.
+ May be specified at any time by any user.
+
+All other options change parameters and thus may only be specified
+ - by root
+ - when the interface is down
+
+--speed <f> Set frequency of baud rate generator. A value of 0 disables
+ the baud rate generator and the digital PLL. Use the
+ --show option to check whether the frequency you selected
+ could be approximated with sufficient accuracy.
+
+--nrzi 0 | 1 0 selects NRZ mode, 1 selects NRZI mode.
+
+--clocks <i> Set clock mode. You may OR together three choices (other
+ values are not supported and may cause strange results):
+
+ TX clock pin: 0x00 input
+ 0x05 output TX clock *
+ 0x06 output baud rate generator *
+ 0x07 output digital PLL *
+
+ TX clock source: 0x00 RX clock pin
+ 0x08 TX clock pin #
+ 0x10 baud rate generator
+ 0x18 digital PLL +
+
+ RX clock source: 0x00 RX clock pin
+ 0x20 TX clock pin
+ 0x40 baud rate generator
+ 0x60 digital PLL +
+
+ * Not allowed on PI2 Port A if J3 is installed.
+ # TX clock pin must be configured as input
+ + Speed must be equal to 32 times the baud rate.
+
+--txdelay <f> Set transmit delay in ms (0 < f < 2500).
+
+--txtime <f> Set maximum time in s the transmitter may be active
+ (0 < f).
+
+--sqdelay <f> Set squelch delay in ms (0 < f < 2500).
+
+--slottime <f> Set slot time in ms (0 < f < 2500).
+
+--waittime <f> Set the minimum time in ms between transmitter off and
+ transmitter on (0 < f < 2500).
+
+--persist <i> Set persistence parameter (0 <= i <= 255).
+
+--dma <i> Set DMA channel (0, 1, or 3). 0 disables DMA.
+
+<f> ... floating-point argument, <i> ... integer argument.
+Parameters are not checked for validity. The driver or the kernel may crash
+if you specify invalid values.
+