Beginnings of info flash support. It isn't very good.
[goodfet] / firmware / apps / spi / spi.c
index f02d402..6e008a1 100644 (file)
@@ -12,7 +12,7 @@
 #include <io.h>
 #include <iomacros.h>
 
-#include <spi.h>
+#include "spi.h"
 
 //This could be more accurate.
 //Does it ever need to be?
@@ -115,28 +115,6 @@ void spiflash_peekblock(unsigned long adr,
   SETSS;  //Raise !SS to end transaction.
 }
 
-//! Write many blocks to the SPI Flash.
-void spiflash_pokeblocks(unsigned long adr,
-                        unsigned char *buf,
-                        unsigned int len){
-  long off=0;//offset of this block
-  int blen;//length of this block
-  SETSS;
-  spiflash_setstatus(0x02);
-  spiflash_wrten();
-  
-  while(off<len){
-    //calculate block length
-    blen=(len-off>0x100?0x100:len-off);
-    //write the block
-    spiflash_pokeblock(adr+off,
-                      buf+off,
-                      blen);
-    //add offset
-    off+=blen;
-  }
-}
-
 //! Read a block to a buffer.
 void spiflash_pokeblock(unsigned long adr,
                        unsigned char *buf,
@@ -145,7 +123,13 @@ void spiflash_pokeblock(unsigned long adr,
   
   SETSS;
   
-  //while(spiflash_status()&0x01);//minor performance impact
+  //if(len!=0x100)
+  //  debugstr("Non-standard block size.");
+  
+  while(spiflash_status()&0x01);//minor performance impact
+  
+  spiflash_setstatus(0x02);
+  spiflash_wrten();
   
   //Are these necessary?
   //spiflash_setstatus(0x02);
@@ -168,6 +152,28 @@ void spiflash_pokeblock(unsigned long adr,
 }
 
 
+//! Write many blocks to the SPI Flash.
+void spiflash_pokeblocks(unsigned long adr,
+                        unsigned char *buf,
+                        unsigned int len){
+  long off=0;//offset of this block
+  int blen;//length of this block
+  SETSS;
+  
+  while(off<len){
+    //calculate block length
+    blen=(len-off>0x100?0x100:len-off);
+    //write the block
+    spiflash_pokeblock(adr+off,
+                      buf+off,
+                      blen);
+    //add offset
+    off+=blen;
+  }
+}
+
+
+
 //! Peek some blocks.
 void spiflash_peek(unsigned char app,
                   unsigned char verb,
@@ -189,6 +195,30 @@ void spiflash_peek(unsigned char app,
   P5OUT|=SS;  //Raise !SS to end transaction.
 }
 
+
+//! Erase a sector.
+void spiflash_erasesector(unsigned long adr){
+  //debugstr("Erasing a 4kB sector.");
+
+  //Write enable.
+  spiflash_wrten();
+
+  //Begin
+  CLRSS;
+
+  //Second command.
+  spitrans8(0x20);
+  //Send address
+  spitrans8((adr&0xFF0000)>>16);
+  spitrans8((adr&0xFF00)>>8);
+  spitrans8(adr&0xFF);
+
+  SETSS;
+  while(spiflash_status()&0x01);//while busy
+  //debugstr("Erased.");
+}
+
+
 //! Handles a monitor command.
 void spihandle(unsigned char app,
               unsigned char verb,
@@ -232,7 +262,7 @@ void spihandle(unsigned char app,
                        cmddata+4,//buf
                        len-4);//len    
     
-    txdata(app,verb,len);
+    txdata(app,verb,0);
     break;