usrp1: reverted spi transaction changes to the usrp1 firmware (broken and not needed)

4 files changed, 3 insertions, 116 deletions

diff --git a/firmware/fx2/common/spi.c b/firmware/fx2/common/spi.c
index 0c4f63d5a..04a1d8477 100644
--- a/firmware/fx2/common/spi.c
+++ b/firmware/fx2/common/spi.c
@@ -97,18 +97,13 @@ count_bits8 (unsigned char v)
 static void
 write_byte_msb (unsigned char v);
 
-unsigned char
-transact_byte_msb (unsigned char v);
-
 static void
 write_bytes_msb (const xdata unsigned char *buf, unsigned char len);
 
 static void
 read_bytes_msb (xdata unsigned char *buf, unsigned char len);
 
-static void
-transact_bytes_msb (xdata unsigned char *buf, unsigned char len);
-
+  
 // returns non-zero if successful, else 0
 unsigned char
 spi_read (unsigned char header_hi, unsigned char header_lo,
@@ -219,93 +214,7 @@ spi_write (unsigned char header_hi, unsigned char header_lo,
   return 1;		// success
 }
 
-unsigned char
-spi_transact (unsigned char data0, unsigned char data1,
-              unsigned char data2, unsigned char data3,
-              unsigned char enables, xdata unsigned char *buf,
-              unsigned char len)
-{
-  if (count_bits8 (enables) > 1)
-    return 0;		// error, too many enables set
-
-  if (len > 4)
-    return 0;
-
-  setup_enables (enables);
-
-  buf[0] = data0;
-  buf[1] = data1;
-  buf[2] = data2; 
-  buf[3] = data3; 
-
-  if (len != 0)
-    transact_bytes_msb(buf, len);
-
-  disable_all ();
-  return 1;		// success
-}
-
-static unsigned char 
-transact_byte_msb (unsigned char v)
-{
-  v = (v << 1) | (v >> 7);	// rotate left (MSB into bottom bit)
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;                 // read into bottom bit
-  bitS_CLK = 0;
-
-  v = (v << 1) | (v >> 7);
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;
-  bitS_CLK = 0;
-
-  v = (v << 1) | (v >> 7);
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;
-  bitS_CLK = 0;
-
-  v = (v << 1) | (v >> 7);
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;
-  bitS_CLK = 0;
-
-  v = (v << 1) | (v >> 7);
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;
-  bitS_CLK = 0;
-
-  v = (v << 1) | (v >> 7);
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;
-  bitS_CLK = 0;
-
-  v = (v << 1) | (v >> 7);
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;
-  bitS_CLK = 0;
-
-  v = (v << 1) | (v >> 7);
-  bitS_OUT = v & 0x1;
-  bitS_CLK = 1;
-  v |= bitS_IN;
-  bitS_CLK = 0;
-
-  return v;
-}
-
-static void
-transact_bytes_msb (xdata unsigned char *buf, unsigned char len)
-{
-  while (len-- != 0){
-    *buf++ = transact_byte_msb (*buf);
-  }
-}
+// ----------------------------------------------------------------
 
 static void
 write_byte_msb (unsigned char v)
diff --git a/firmware/fx2/common/spi.h b/firmware/fx2/common/spi.h
index 5342b82b8..12bc5e544 100644
--- a/firmware/fx2/common/spi.h
+++ b/firmware/fx2/common/spi.h
@@ -39,12 +39,5 @@ spi_write (unsigned char header_hi, unsigned char header_lo,
 	   unsigned char enables, unsigned char format,
 	   const xdata unsigned char *buf, unsigned char len);
 
-// returns non-zero if successful, else 0
-unsigned char
-spi_transact (unsigned char data0, unsigned char data1,
-              unsigned char data2, unsigned char data3,
-	      unsigned char enables, xdata unsigned char *buf,
-              unsigned char len);
-
 
 #endif /* INCLUDED_SPI_H */
diff --git a/firmware/fx2/common/usrp_commands.h b/firmware/fx2/common/usrp_commands.h
index 02778c7e3..20c28e264 100644
--- a/firmware/fx2/common/usrp_commands.h
+++ b/firmware/fx2/common/usrp_commands.h
@@ -54,13 +54,6 @@
 							// wIndexL:	format
 							// len: how much to read
 
-#define	VRQ_SPI_TRANSACT		0x83		// wValueH:  OUT byte 0
-							// wValueL:  OUT byte 1
-							// wIndexH:  OUT byte 2
-							// wIndexL:  OUT byte 3 
-							// wLengthH: enables 
-							// wLengthL: transaction length
-
 // OUT commands
 
 #define	VRQ_SET_LED			0x01		// wValueL off/on {0,1}; wIndexL: which {0,1}
diff --git a/firmware/fx2/usrp1/usrp_main.c b/firmware/fx2/usrp1/usrp_main.c
index 3eb8c001f..802516c0b 100644
--- a/firmware/fx2/usrp1/usrp_main.c
+++ b/firmware/fx2/usrp1/usrp_main.c
@@ -118,7 +118,7 @@ app_vendor_cmd (void)
       EP0BCH = 0;
       EP0BCL = wLengthL;
       break;
-
+      
     case VRQ_SPI_READ:
       if (!spi_read (wValueH, wValueL, wIndexH, wIndexL, EP0BUF, wLengthL))
 	return 0;
@@ -127,14 +127,6 @@ app_vendor_cmd (void)
       EP0BCL = wLengthL;
       break;
 
-    case VRQ_SPI_TRANSACT:
-      if (!spi_transact (wValueH, wValueL, wIndexH, wIndexL, wLengthH, EP0BUF, wLengthL))
-	return 0;
-
-      EP0BCH = 0;
-      EP0BCL = wLengthL;
-      break;
-
     default:
       return 0;
     }