111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
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// Copyright (C) 2009 Ubixum, Inc.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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/*! \file
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*
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* These functions do the same thing that the Cypress gpif designer expored c file does.
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* Instead of including their file directly in your project, you include just the
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* generated waveform data. The gpif2dat script in the utils folder will export your
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* waveform data to a file that can be included in your project.
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* */
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#ifndef GPIF_H
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#define GPIF_H
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#include "fx2types.h"
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#define GPIFDONE (GPIFTRIG&0x80)
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#define GPIFTC16 (MAKEWORD(GPIFTCB1,GPIFTCB0))
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#define GPIFTC32 (MAKEDWORD(MAKEWORD(GPIFTCB3,GPIFTCB2),MAKEWORD(GPIFTCB1,GPIFTCB0)))
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/**
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* Gpif designer generates a c file with waveform data.
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* Copy the WaveData[128] array
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* and the InitData[7] to your code somewhere
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* Then this function is pretty much the reset of the generated
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* code but ported to sdcc.
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*
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* uses syncdelay of 4 which might not be long enough if peripheral
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* runs slower than 30mhz. May not affect anything.
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*
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* IFCONFIG is set with IFCFG[1:0] = 10 for GPIF master but you still
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* have to set the ifclk, polarity, and the rest of the bits
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**/
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void gpif_init(BYTE * waveform, BYTE * initdata);
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/**
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* Uses the correct bytes from your flowstates array.
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* This may or may not be needed depending on whether
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* your waveform data uses flowstates. If you don't
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* know if you need them or not, you probably don't.
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*
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* flowstates should have 36 elements.
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* bank should be 0-3
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**/
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void gpif_setflowstate(BYTE * flowstates, BYTE bank);
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//! These defines/functions pretty much out of the TRM 10.4
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#define GPIFTRGWR 0
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#define GPIFTRGRD 4
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typedef enum {
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GPIF_EP2 = 0,
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GPIF_EP4 = 1,
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GPIF_EP6 = 2,
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GPIF_EP8 = 3
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} GPIF_EP_NUM;
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/**
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* \brief Simple function to help set the transaction count for gpif
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* transactions.
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* \param tc 32 bit Transaction Count
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**/
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void gpif_set_tc32(DWORD tc);
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/**
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* \brief Simple function to set transaction count for gpif transactions.
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* \param tc 16 bit Transaction Count
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**/
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void gpif_set_tc16(WORD tc);
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/**
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* Use the gpif to read a single word at a time.
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* Read len words and store in res
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*
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* At least one EPxFIFOCFG has to have wordwide=1 or this
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* functions won't transfer both bytes.
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**/
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void gpif_single_read16(WORD * res, WORD len);
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/**
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* Use the gpif to write a single word at a time.
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* Write len words from data
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*
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* At leat one EPxFIFOCFG has to have wordwide=1 or this
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* function won't transfer both bytes.
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**/
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void gpif_single_write16(WORD * dat, WORD len);
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void gpif_fifo_read(GPIF_EP_NUM ep_num);
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void gpif_fifo_write(GPIF_EP_NUM ep_num);
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#endif
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