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@@ -41,13 +41,19 @@ The configuration of `/boot/config.txt` will contain this line, then you can con
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dtoverlay=audremap,pins_12_13 # for pins 12 and 13
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```
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-## Usages
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+## Softwares usages
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-### chroot-to-pi.sh script
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-Use this script to chroot your system on another system.
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+### chroot-to-pi.sh
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+Use this script to chroot your system on another system, get a shell and do the work with the CPU on the host. This to win time in compilation, or to fix something broken.
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-### Launch the full process
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+### active_nmea.py
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+Due to the radiosond and default parameter, we have isolated the Sierre Wireless XM1110 GPS chip and get the NMEA via UART interface. By the way, the default parameter is set to binary, and unfortunatly, we can't read it.
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+That's wy we have to launch active_nmea.py, that set a PMTK command to have an output in NMEA. We have to do this each time the GPS is booting.
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+User crontab to do this.
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-``` bash
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-run-parts ./process/
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-```
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+### convert_ll_dec.py
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+This is a simple converter of decimal to hours, minutes, (seconds with 4 decimals).
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+Datas are parsed for insert Exim GPS datas in JPG pictures.
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+
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+### read_nmea.py
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+This script simply get the NMEA informations.
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