Gecko3 - CCC Event Weblog

E. Quellcode
43 S P I s e l e c t D e v i c e (M25P16) ;
SPIwriteByte (RDSR) ;
i f ( SPIreadByte ( )&&0x01==1){
value=TRUE;
}
48 S P I d e s e l e c t D e v i c e (M25P16) ;
return value ;
}
// read one b y t e at t h e g i v e n a d r e s s
53 byte readByte ( long a d r e s s ) {
byte value ;
S P I s e l e c t D e v i c e (M25P16) ;
SPIwriteByte (READ) ;
sendAdress ( a d r e s s ) ;
58 value = SPIreadByte ( ) ;
S P I d e s e l e c t D e v i c e (M25P16) ;
return value ;
}
63 // 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 ) {
S P I s e l e c t D e v i c e (M25P16) ;
SPIwriteByte (READ) ;
sendAdress ( a d r e s s ) ;
68 return SPIreadByte ( ) ;
}
// reads t h e next b y t e ( s e q u e n t i a l readout )
byte readBlock ( ) {
73 return SPIreadByte ( ) ;
}
// reads t h e l a s t b y t e from a b l o c k and t e r m i n a t e s t h e b l o c k r e a d
byte lastBlockRead ( ) {
78 byte value ;
value = SPIreadByte ( ) ;
S P I d e s e l e c t D e v i c e (M25P16) ;
return value ;
}
83
// e n a b l e w r i t e a c c e s s
void writeEnable ( ) {
S P I s e l e c t D e v i c e (M25P16) ;
SPIwriteByte (WREN) ;
88 S P I d e s e l e c t D e v i c e (M25P16) ;
}
// e r a s e s t h e s e c t o r in wich t h e g i v e n a d r e s s i s
void s e c t o r E r a s e ( long a d r e s s ) {
93 writeEnable ( ) ;
S P I s e l e c t D e v i c e (M25P16) ;
SPIwriteByte (SE) ;
sendAdress ( a d r e s s ) ;
S P I d e s e l e c t D e v i c e (M25P16) ;
98 while ( isBusy ( ) ) {
}
}
// e r a s e s t h e whole f l a s h
103 void bulkErase ( ) {
writeEnable ( ) ;
S P I s e l e c t D e v i c e (M25P16) ;
SPIwriteByte (BE) ;
S P I d e s e l e c t D e v i c e (M25P16) ;
108 while ( isBusy ( ) ) {
82 Matthias Zurbrügg, Christoph Zimmermann