Gecko3 - CCC Event Weblog

E.1. Firmware
count −= 6 4 ; // t h e t o t a l b y t e s in t h e b u f f e r array minus 64
b y t e s
} else {
loop = count ; // i f t h e end o f t r a n s a c t i o n t h e b y t e s in t h e
b u f f e r array are = r e a d c o u n t ) { // i f t h e number o f b y t e s w r i t t e n e q u a l
number o f b y t e s to read
bytecount = 0 ;
140 e e p r o m r e a d s t a t e = ep4in arm ; // s e t EP4 rearm s t a t e
}
}
break ;
}
145 case ep4in arm :
{
SYNCDELAY;
EP4BCH = MSB( r e a d c o u n t ) ;
SYNCDELAY;
150 EP4BCL = LSB( r e a d c o u n t ) ; // arm EP4IN∗/
SYNCDELAY;
e e p r o m r e a d s t a t e = i d l e ; // s e t read s t a t e to i d l e
}
default :
155 break ;
}
}
E.1.5. SPI Flash schreiben und lesen
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2 ∗ Diplomwork :
∗ Gecko3 SoC HW/SW Development Board
∗
∗ ( ‘ \ ( ) ( ) ( )
∗ | ( ) ) | ( | | | | 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
∗ ( / ’( ) ( ) ( )
∗
∗
12 ∗ Author : Matthias Zurbrügg
∗ Date o f c r e a t i o n : 30.10.2006
∗ D e s c r i p t i o n :
∗ Source code o f SPI Flash read / w r i t e f u n c t i o n s and t h e
∗ a u t o c o n f i g u r a t i o n f u n c t i o n
17 ∗
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#include ” fx2 . h”
#include ” f x 2 r e g s . h”
22 #include ” f x 2 s d l y . h” // SYNCDELAY macro
Project Report 77