Gecko3 - CCC Event Weblog

E. Quellcode
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2 ∗ Diplomwork :
∗ Gecko3 SoC HW/SW Development Board
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∗ ( ‘ \ ( ) ( ) ( )
∗ | ( ) ) | ( | | | | Berne U n i v e r s i t y o f Applied S c i e n c e s
7 ∗ | < ’| ) | | School o f Engineering and
∗ | ( ) ) | | | | | | Information Technology
∗ ( / ’( ) ( ) ( )
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12 ∗ Author : Christoph Zimmermann
∗ Date o f c r e a t i o n : 31.10.2006
∗ D e s c r i p t i o n :
∗ H e a d e r f i l e f o r t h e M25P16 Library
∗ Library to a c c e s s t h e M25P16 SPI Flash from ST
17 ∗ M i c r o e l e c t r o n i c s . The S25FL016 SPI Flash from
∗ Spansion i s s o f t w a r e and pin c o m p a t i b l e
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∗ Changelog :
∗ 31.10.2006
22 ∗ f i r s t v e r s i o n
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// d e f i n e s wich d e v i c e in t h e SPI subsytem i s t h e M25P16
#define M25P16 0
27 #define MANUFACTURER 0 x20
#define MEMTYPE 0 x20
#define MEMCAPACITY 0 x15
#define MAXADRESS 0x1FFFFF
32
// f l a s h memory opcodes
#define WREN 0 x06
#define WRDI 0 x04
#define RDID 0x9F
37 #define RDSR 0 x05
#define WRSR 0 x01
#define READ 0 x03
#define FAST READ 0x0B
#define PP 0 x02
42 #define SE 0xD8
#define BE 0xC7
#define DP 0xB9
#define RES 0xAB
47 // checks i f t h e c o r r e c t d e v i c e i s s e l e c t e d
b i t isM25P16 ( ) ;
52
// checks i f t h e d e v i c e i s busy or ready to r e c e i v e t h e next i n s t r u c t i o n
b i t isBusy ( ) ;
// h e l p e r f u n c t i o n to send a d r e s s e s to t h e f l a s h
void sendAdress ( long a d r e s s ) ;
// e n a b l e w r i t e a c c e s s
57 void writeEnable ( ) ;
// read one b y t e at t h e g i v e n a d r e s s
byte readByte ( long a d r e s s ) ;
62 // s t a r t s a b l o c k read from t h e g i v e n a d r e s s
byte startBlockRead ( long a d r e s s ) ;
// reads t h e next b y t e ( s e q u e n t i a l readout )
byte readBlock ( ) ;
94 Matthias Zurbrügg, Christoph Zimmermann