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SD GPS Track Logger
Why? This is why:Bicycling Trips
Need a PIC18 chip with more memory, I'll be using the PIC18F4685.
PIC18F2620-I/SP-ND
Considering ordering the AC164122-ND DM163025-ND from Digikey.
Microchip Mass Storage Class Firmware
Hardware
DM163025 PicDEM USB Demo Board
picdem_fs_usb_demonstration_board_users_guide.pdf
Will be useful for future projects, however the included processor, the PIC18F4550 does not have enough memory for the filesystem library from Microchip.
AC164122 PICtail Board for SD & MMC
SD and MMC Cards PICtail Daughter Board Info Sheet
| Function | I/O | Pin | Description |
|---|---|---|---|
| SCK | O | RB1 | SPI Clock Out |
| SDI | I | RB0 | SPI Data In |
| SDO | O | RC7 | SPI Data Out |
| CD | I | RB4 | Physical Card Insertion Detect Signal |
| WD | I | RA4 | Physical Write-Protect Switch Status Signal |
| CS | O | RB3 | Low Asserting SPI Chip Select |
Activity LED is tied to Chip Select line.
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