FreeCalypso > hg > fc-rfcal-tools
view doc/General-flow @ 95:b68301b38ff2
doc: Cable-config-howto and General-flow written
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 17 Jul 2017 18:26:30 +0000 |
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The general flow of using fc-rfcal-tools to calibrate Calypso GSM devices is as follows: * At the beginning of your calibration work session, you need to power on your CMU200, wait for it to finish booting, and then run fc-cmu200d; the fc-cmu200d command line takes the following form: fc-cmu200d -c cable_name /dev/ttyXXX 19200 Change /dev/ttyXXX to the serial port that is connected to the CMU200, give fc-cmu200d the same baud rate that is configured on the CMU (19200 is the default), and select the appropriate cable configuration with the -c option: see the Cable-config-howto article. By default the RF2 port on the CMU200 will be used; you can give a -1 option to use the RF1 port instead, or you can include an 'rf-port 1' or 'rf-port 2' line in your cable config files to have the port selection go with the -c selection. * In typical usage the fc-cmu200d process you started in the previous step can persist through any number of individual device calibrations, as on a factory production line. However, if you need to switch to a different cable setup with different loss numbers, you will need to kill the fc-cmu200d process and restart it with the appropriate new -c option. * To calibrate an individual Calypso GSM device, you will need to have an rvinterf process running, talking to the RVTMUX UART channel on that device. Booting your Calypso GSM device in the correct manner and running rvinterf with the right arguments is your responsibility: fc-rfcal-* tools will expect rvinterf to be running already, and will not launch it themselves. * With both fc-cmu200d and rvinterf running, talking to your CMU200 and your DUT, respectively, and with the correct RF coax (matching your fc-cmu200d -c selection) connected between the two, you can now run the actual calibration automation programs. For a 900/1800/1900 MHz triband Calypso GSM device, the standard sequence is as follows: fc-rfcal-vcxo fc-rfcal-rxband 900 fc-rfcal-rxband 1800 fc-rfcal-rxband 1900 fc-rfcal-txband 900 <profile> fc-rfcal-txband 1800 <profile> fc-rfcal-txband 1900 <profile> The <profile> argument to fc-rfcal-txband commands needs to be changed to the name of the appropriate Tx levels calibration profile; see the Tx-cal-theory article for more information. Each of the fc-rfcal-* steps finishes by writing the values it has calibrated into the Calypso device's non-volatile flash file system (FFS); once all of the steps have been completed, the Calypso device is fully calibrated. After the calibration procedure the Calypso device should be rebooted before normal AT command operation is attempted.