Source code written in C. I use the PCM compiler for the average bit controller (PCM midrange compiler) from the CCS. It costs about a hundred dollars and produces very compact code, a complete set of built-in functions and data types. I am very pleased with them. Web site compiler developers - ccsinfo.com .
For people who do not need to modify the code is. hex files, ready for loading directly into the PIC controller. Do not forget to clear the check box ( fuses ) and Brownout WATCHDOG , it would mean - to prohibit ih.Esli you do not, the entire device will refuse to work. This is the most common mistake.
To date, all of 4 kilobytes of program memory is almost fully occupied. 256 bytes of flash ( EEPROM) memory is completely used to store tables of the function Shuffle. There are several non-critical functions that can be removed to free up some space in memory, such as buttons and sub-interface mode random playback. If the microchip company when neither be to release the 18-legged controller with 8 kilobytes of memory, I will definitely use it for this project. You can also make the code more efficient than the code I have made. If you do, let me know what you did.
Parts List
Number | Part number | Description |
1 | PIC 16 LF 88, SOIC package (in April 2006 at mouser they were the cheapest). | PIC microcontroller. |
1 | VS1011b, SOIC body . I think I use vs 1011 e is possible, but will require minor modifications. | Chip MP3 decoder. |
1 | SCDA 1 A 0901 (available from Mouser . com ) | Slot for SD / MMC card |
1 | Low-current red LED, housing 1206 | |
1 | CP-3523SJCT-ND | Headphone jack. |
1 | ECS-129-18-4 12.96 MHZ or equivalent | crystal at 12.96 megahertz. |
2.4 | 311-1154-1-ND | 22pF capacitor, 1206 case. |
1 | MCP1700T3302ETTCT-ND | Stabilizer 3.3 volts, SOT23-3 package. |
6 | BC1300CT | 0.1mkF capacitor, 0805 case. |
3 | PCE3093CT | Mini joystick (4 buttons and a "choice"). |
1 | Not defined | 5 pin plug 1 inch. |
1 | SBH-431A-ND | 3 cell Ni - MH battery ( AAAworks well L ). |
1 | 1M resistor 1206 chassis. | |
1 | 1K resistor 0805 chassis. | |
1 | 478-3026-1 | from 10 to 15 uF tantalum capacitor. |
