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author | Nick Foster <nick@nerdnetworks.org> | 2010-11-10 12:15:35 -0800 |
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committer | Nick Foster <nick@nerdnetworks.org> | 2010-11-10 12:15:35 -0800 |
commit | fb0cdbc553d288402ee7939dc72f4368eb9e8e1b (patch) | |
tree | e20003155af08428448a7834a82d259f3b68717d /firmware/fx2/lib/i2c-compiler-bug.c | |
parent | 8fe1e7b29aacce7f75ae36e81706bbde02749b97 (diff) | |
parent | 8c434f7d63aca25b55d6d13dffcc1d7037261d4f (diff) | |
download | uhd-fb0cdbc553d288402ee7939dc72f4368eb9e8e1b.tar.gz uhd-fb0cdbc553d288402ee7939dc72f4368eb9e8e1b.tar.bz2 uhd-fb0cdbc553d288402ee7939dc72f4368eb9e8e1b.zip |
Merge branch 'master' of ettus.sourcerepo.com:ettus/uhdpriv into usrp2p-next
Conflicts:
firmware/microblaze/lib/u2_init.c
host/lib/usrp/usrp2/clock_ctrl.cpp
host/lib/usrp/usrp2/fw_common.h
host/lib/usrp/usrp2/mboard_impl.cpp
host/lib/usrp/usrp2/usrp2_iface.cpp
host/lib/usrp/usrp2/usrp2_iface.hpp
Diffstat (limited to 'firmware/fx2/lib/i2c-compiler-bug.c')
-rw-r--r-- | firmware/fx2/lib/i2c-compiler-bug.c | 129 |
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; -} |