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Add some more comments to MCI API documentation.

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rjkm 2024-03-26 22:36:05 +01:00
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docs/modulator_mci_api
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@ -1,6 +1,10 @@
MCI API for modulators:
Note:
Notes:
The API is not meant to be used directly but via the app/modconfig command.
Example config files for DVB-T and DVB-C are in apps/modulator.conf and
apps/modulator-c.conf, respectively.
stream - refers to one modulator slot which take a TS and modulates it
e.g. the FSM16 has 16 streams
@ -9,6 +13,7 @@ channel - an actual frequency the stream is sent on
the FSM cards in default config have 96 channels at 114 MHz + X * 8 MHz (X=0-95)
MCI commands can be sent to modulators with the IOCTL_DDB_MCI_CMD:
#define IOCTL_DDB_MCI_CMD _IOWR(DDB_MAGIC, 0x0c, struct ddb_mci_msg)
@ -124,6 +129,10 @@ frequency offset between channels depends on standard (e.g. 8MHz for DVBC_8)
offset/bandwidth: set offsets between channels and bandwidth by hand (not for FSM cards)
NOTE: After changing the channel setup you have to set the streams you want to use at least once
before you use them. Otherwise, they will not have the new channel frequency.
MOD_SETUP_OUTPUT: