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authorJosh Blum <josh@joshknows.com>2010-11-05 13:53:39 -0700
committerJosh Blum <josh@joshknows.com>2010-11-05 13:53:39 -0700
commit3ac3457184bc3b251ce7398eee56c931983abe65 (patch)
tree7cfa1ba616788ad083236272a323c3a6e2964da3 /firmware/fx2/lib/i2c-compiler-bug.c
parent144ebf29327981db8422049b451852744619678d (diff)
parentc473cc56fafcb47d6ba1f16e8c9fb89ff6c57bca (diff)
downloaduhd-3ac3457184bc3b251ce7398eee56c931983abe65.tar.gz
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Merge branch 'good_stuff' into mb_eeprom
Conflicts: firmware/fx2/include
Diffstat (limited to 'firmware/fx2/lib/i2c-compiler-bug.c')
-rw-r--r--firmware/fx2/lib/i2c-compiler-bug.c129
1 files changed, 0 insertions, 129 deletions
diff --git a/firmware/fx2/lib/i2c-compiler-bug.c b/firmware/fx2/lib/i2c-compiler-bug.c
deleted file mode 100644
index 360b779bc..000000000
--- a/firmware/fx2/lib/i2c-compiler-bug.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2003 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 "i2c.h"
-#include "fx2regs.h"
-#include <string.h>
-
-
-// issue a stop bus cycle and wait for completion
-
-
-// returns non-zero if successful, else 0
-unsigned char
-i2c_read (unsigned char addr, xdata unsigned char *buf, unsigned char len)
-{
- volatile unsigned char junk;
-
- if (len == 0) // reading zero bytes always works
- return 1;
-
- // memset (buf, 0, len); // FIXME, remove
-
- while (I2CS & bmSTOP) // wait for stop to clear
- ;
-
-
- I2CS = bmSTART;
- I2DAT = (addr << 1) | 1; // write address and direction (1's the read bit)
-
- while ((I2CS & bmDONE) == 0)
- ;
-
- if ((I2CS & bmBERR) || (I2CS & bmACK) == 0) // no device answered...
- goto fail;
-
- if (len == 1)
- I2CS |= bmLASTRD;
-
- junk = I2DAT; // trigger the first read cycle
-
-#if 1
- while (len != 1){
- while ((I2CS & bmDONE) == 0)
- ;
-
- if (I2CS & bmBERR)
- goto fail;
-
- len--;
- if (len == 1)
- I2CS |= bmLASTRD;
-
- *buf++ = I2DAT; // get data, trigger another read
- }
-#endif
-
- // wait for final byte
-
- while ((I2CS & bmDONE) == 0)
- ;
-
- if (I2CS & bmBERR)
- goto fail;
-
- I2CS |= bmSTOP;
- *buf = I2DAT;
-
- return 1;
-
- fail:
- I2CS |= bmSTOP;
- return 0;
-}
-
-
-
-// returns non-zero if successful, else 0
-unsigned char
-i2c_write (unsigned char addr, xdata const unsigned char *buf, unsigned char len)
-{
- while (I2CS & bmSTOP) // wait for stop to clear
- ;
-
- I2CS = bmSTART;
- I2DAT = (addr << 1) | 0; // write address and direction (0's the write bit)
-
- while ((I2CS & bmDONE) == 0)
- ;
-
- if ((I2CS & bmBERR) || (I2CS & bmACK) == 0) // no device answered...
- goto fail;
-
- while (len > 0){
- I2DAT = *buf++;
- len--;
-
- while ((I2CS & bmDONE) == 0)
- ;
-
- if ((I2CS & bmBERR) || (I2CS & bmACK) == 0) // no device answered...
- goto fail;
- }
-
- I2CS |= bmSTOP;
- return 1;
-
- fail:
- I2CS |= bmSTOP;
- return 0;
-}