unsigned char verb,
unsigned long len){
unsigned long i;
+ static int state=0;
//Raise !SS to end transaction, just in case we forgot.
SETSS;
case SPI_RW_EM260: //SPI exchange with an EM260
P4DIR=0; //TODO ASAP remove P4 references.
- P4OUT=0;
+ P4OUT=0xFF;
+ P4REN=0xFF;
//See GoodFETEM260.py for details.
//The EM260 requires that the host wait for the client.
+ /*
+ if((~P4IN)&1)
+ debugstr("Detected HOST_INT.");
+ */
+
+ //if(!state++)
+ //if(state++&1)
em260_wake();
SETMOSI; //Autodetected SPI mode.
//Host to slave. Ignore data.
for(i=0;i<len;i++)
spitrans8(cmddata[i]);
+
//debugstr("Finished transmission to EM260.");
- //Could also wait for nHOST_INT to drop.
+ //Wait for nHOST_INT to drop.
i=0xffff;
+
+ while(P4IN&1
+ && --i
+ )
+ spitrans8(0xFF);
+
while((cmddata[0]=spitrans8(0xFF))==0xFF
&& --i);
+
if(!i)
debugstr("Gave up on host interrupt.");
-
- len=32;
- for(i=1;i<len;i++)
- cmddata[i]=spitrans8(0xFF);
+
+ len=1;
+ while(
+ (cmddata[len++]=spitrans8(0xFF))!=0xA7
+ );
SETSS; //Raise !SS to end transaction.