include/gpif.h

   1 // Copyright (C) 2009 Ubixum, Inc.
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  16
  17 /*! \file
  18  *
  19  * These functions do the same thing that the Cypress gpif designer expored c file does.
  20  * Instead of including their file directly in your project, you include just the
  21  * generated waveform data.  The gpif2dat script in the utils folder will export your
  22  * waveform data to a file that can be included in your project.
  23  * */
  24
  25 #ifndef GPIF_H
  26 #define GPIF_H
  27
  28 #include "fx2types.h"
  29
  30 #define GPIFDONE (GPIFTRIG&0x80)
  31 #define GPIFTC16 (MAKEWORD(GPIFTCB1,GPIFTCB0))
  32 #define GPIFTC32 (MAKEDWORD(MAKEWORD(GPIFTCB3,GPIFTCB2),MAKEWORD(GPIFTCB1,GPIFTCB0)))
  33
  34
  35 /**
  36  * Gpif designer generates a c file with waveform data.
  37  * Copy the WaveData[128] array
  38  * and the InitData[7] to your code somewhere
  39  * Then this function is pretty much the reset of the generated
  40  * code but ported to sdcc.
  41  *
  42  * uses syncdelay of 4 which might not be long enough if peripheral
  43  * runs slower than 30mhz.  May not affect anything.
  44  *
  45  * IFCONFIG is set with IFCFG[1:0] = 10 for GPIF master but you still
  46  * have to set the ifclk, polarity, and the rest of the bits
  47  **/
  48
  49 void gpif_init( BYTE* waveform, BYTE* initdata );
  50
  51 /**
  52  * Uses the correct bytes from your flowstates array.
  53  * This may or may not be needed depending on whether
  54  * your waveform data uses flowstates.  If you don't
  55  * know if you need them or not, you probably don't.
  56  *
  57  * flowstates should have 36 elements.
  58  * bank should be 0-3
  59  **/
  60 void gpif_setflowstate( BYTE* flowstates, BYTE bank);
  61
  62
  63
  64 //! These defines/functions pretty much out of the TRM 10.4
  65 #define GPIFTRGWR 0
  66 #define GPIFTRGRD 4
  67 typedef enum {
  68     GPIF_EP2 = 0,
  69     GPIF_EP4 = 1,
  70     GPIF_EP6 = 2,
  71     GPIF_EP8 = 3
  72 } GPIF_EP_NUM;
  73
  74 /**
  75  * \brief Simple function to help set the transaction count for gpif
  76  * transactions.
  77  * \param tc 32 bit Transaction Count
  78  **/
  79 void gpif_set_tc32(DWORD tc);
  80 /**
  81  * \brief Simple function to set transaction count for gpif transactions.
  82  * \param tc 16 bit Transaction Count
  83  **/
  84 void gpif_set_tc16(WORD tc);
  85
  86
  87 /**
  88  * Use the gpif to read a single word at a time.
  89  * Read len words and store in res
  90  *
  91  * At least one EPxFIFOCFG has to have wordwide=1 or this
  92  * functions won't transfer both bytes.
  93  **/
  94
  95 void gpif_single_read16( WORD* res , WORD len);
  96
  97 /**
  98  * Use the gpif to write a single word at a time.
  99  * Write len words from data
 100  *
 101  * At leat one EPxFIFOCFG has to have wordwide=1 or this
 102  * function won't transfer both bytes.
 103  **/
 104 void gpif_single_write16( WORD* dat, WORD len);
 105
 106 void gpif_fifo_read ( GPIF_EP_NUM ep_num );
 107
 108 void gpif_fifo_write( GPIF_EP_NUM ep_num );
 109
 110 #endif