1 files changed, 116 insertions, 0 deletions
diff --git a/firmware/fx2/src/usrp1/eeprom_init.c b/firmware/fx2/src/usrp1/eeprom_init.c
new file mode 100644
index 000000000..a6f6cbe2d
--- /dev/null
+++ b/firmware/fx2/src/usrp1/eeprom_init.c
@@ -0,0 +1,116 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "usrp_common.h"
+#include "usrp_commands.h"
+#include "spi.h"
+
+/*
+ * the host side fpga loader code pushes an MD5 hash of the bitstream
+ * into hash1.
+ */
+#define	  USRP_HASH_SIZE      16
+xdata at USRP_HASH_SLOT_0_ADDR unsigned char hash0[USRP_HASH_SIZE];
+
+
+#define enable_codecs() USRP_PA &= ~(bmPA_SEN_CODEC_A | bmPA_SEN_CODEC_B)
+#define disable_all()	USRP_PA |=  (bmPA_SEN_CODEC_A | bmPA_SEN_CODEC_B)
+
+static void
+write_byte_msb (unsigned char v);
+
+void
+write_both_9862s (unsigned char header_lo, unsigned char v)
+{
+  enable_codecs ();
+
+  write_byte_msb (header_lo);
+  write_byte_msb (v);
+
+  disable_all ();
+}
+
+// ----------------------------------------------------------------
+
+static void
+write_byte_msb (unsigned char v)
+{
+  unsigned char n = 8;
+  do {
+    v = (v << 1) | (v >> 7);	// rotate left (MSB into bottom bit)
+    bitS_OUT = v & 0x1;
+    bitS_CLK = 1;
+    bitS_CLK = 0;
+  } while (--n != 0);
+}
+
+// ----------------------------------------------------------------
+
+#define REG_RX_PWR_DN		 1
+#define	REG_TX_PWR_DN		 8
+#define	REG_TX_MODULATOR	20
+
+void eeprom_init (void)
+{
+  unsigned short counter;
+  unsigned char	 i;
+
+  // configure IO ports (B and D are used by GPIF)
+
+  IOA = bmPORT_A_INITIAL;	// Port A initial state
+  OEA = bmPORT_A_OUTPUTS;	// Port A direction register
+
+  IOC = bmPORT_C_INITIAL;	// Port C initial state
+  OEC = bmPORT_C_OUTPUTS;	// Port C direction register
+
+  IOE = bmPORT_E_INITIAL;	// Port E initial state
+  OEE = bmPORT_E_OUTPUTS;	// Port E direction register
+
+  EP0BCH = 0;			SYNCDELAY;
+
+  // USBCS &= ~bmRENUM;		// chip firmware handles commands
+  USBCS = 0;			// chip firmware handles commands
+
+  USRP_PC &= ~bmPC_nRESET;	// active low reset
+  USRP_PC |=  bmPC_nRESET;
+
+  // init_spi ();
+  bitS_OUT = 0;			/* idle state has CLK = 0 */
+
+  write_both_9862s (REG_RX_PWR_DN,    0x01);
+  write_both_9862s (REG_TX_PWR_DN,    0x0f);	// pwr dn digital and analog_both
+  write_both_9862s (REG_TX_MODULATOR, 0x00);	// coarse & fine modulators disabled
+
+  // zero firmware hash slot
+  i = 0;
+  do {
+    hash0[i] = 0;
+    i++;
+  } while (i != USRP_HASH_SIZE);
+
+  counter = 0;
+  while (1){
+    counter++;
+    if (counter & 0x8000)
+      IOC ^= bmPC_LED0;
+  }
+}