Device driver and user space application for a hand-held GPS using the uCsimm.
The kernel module is a device driver that handles all communication with the LCD. All commands and data sent to the LCD are done through ioctl() function calls. The driver also reads the switch to determine when the mode select button has been pressed.
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The following information is displayed on the screen:
- Signal validity & Number of satellites
- Time & Date
- Easting & Northing
- Zone & Grid reference
- Altitude, Speed & Heading
- Longitude & Latitude
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