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URL https://opencores.org/ocsvn/yac/yac/trunk

Subversion Repositories yac

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  • This comparison shows the changes necessary to convert path 
    /yac/trunk
    from Rev 8 to Rev 9
    ↔ Reverse comparison
  •

Rev 8 → Rev 9

/sw/src/yac.c
0,0 → 1,94
/* -------------------------------------------------------------------
*
*
*
* File : yac.c
* Project : YAC (Yet Another CORDIC Core)
* Creation : Jun. 2015
* Limitations :
* Synthesizer :
* Target :
*
* Author(s): : Christian Haettich
* Email : feddischson@opencores.org
*
*
*
*
* Description
* Implementation of functions to access the yac.
*
*
*
*
*
*
*
* -------------------------------------------------------------------
*
* Copyright Notice
*
* This file is part of YAC - Yet Another CORDIC Core
* Copyright (c) 2015, Author(s), All rights reserved.
*
* YAC is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* YAC 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, download it from
* http://www.gnu.org/licenses/lgpl
*
* -------------------------------------------------------------------
*/
#include "yac.h"
 
 
#define REG32(adr) *((volatile unsigned long *)(adr))
 
 
void yac_init( YAC * yac,
uint32_t base,
uint32_t xy_width,
uint32_t a_width,
uint8_t rm_gain,
uint16_t entries )
{
yac->base = base;
yac->xy_width = xy_width;
yac->a_width = a_width;
yac->rm_gain = rm_gain;
yac->entries = entries;
yac->status_reg = base + ( entries<<4);
}
 
 
 
void yac_single( YAC * yac,
int32_t * x_i,
int32_t * y_i,
int32_t * z_i,
int32_t * x_o,
int32_t * y_o,
int32_t * z_o,
uint8_t * mode )
{
REG32( yac->base + 0 ) = *x_i;
REG32( yac->base + 4 ) = *y_i;
REG32( yac->base + 8 ) = *z_i;
REG32( yac->base + 12 ) = *mode;
REG32( yac->status_reg ) = (1<<YAC_ENTRIES_SHIFT) | 1;
 
/* busy wait loop until the yac is done */
while( REG32( yac->status_reg ) & 1 );
 
*x_o = REG32( yac->base + 0 );
*y_o = REG32( yac->base + 4 );
*z_o = REG32( yac->base + 8 );
}
/sw/inc/yac.h
0,0 → 1,110
/* -------------------------------------------------------------------
*
*
*
* File : yac.h
* Project : YAC (Yet Another CORDIC Core)
* Creation : Jun. 2015
* Limitations :
* Synthesizer :
* Target :
*
* Author(s): : Christian Haettich
* Email : feddischson@opencores.org
*
*
*
*
* Description
* Header file for YAC driver
*
*
*
*
*
*
*
* -------------------------------------------------------------------
*
* Copyright Notice
*
* This file is part of YAC - Yet Another CORDIC Core
* Copyright (c) 2015, Author(s), All rights reserved.
*
* YAC is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* YAC 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, download it from
* http://www.gnu.org/licenses/lgpl
*
* -------------------------------------------------------------------
*/
 
 
#ifndef _YAC_H_
#define _YAC_H_
 
#include <stdint.h>
 
 
#define YAC_FLAG_VEC_ROT 0x08
#define YAC_FLAG_ATAN_3 0x04
#define YAC_MODE_MSK 0x03
#define YAC_MODE_CIR 0x00
#define YAC_MODE_LIN 0x01
#define YAC_MODE_HYP 0x02
 
 
#define YAC_ENTRIES_SHIFT 16
 
 
 
/*
* Setup of the instanciated yac
*/
#define YAC_XY_WIDTH 8
#define YAC_A_WIDTH 8
#define YAC_RM_GAIN 3
#define YAC_N_ENTRIES 4
 
 
 
typedef struct _YAC_
{
uint32_t base;
uint32_t status_reg;
uint32_t xy_width;
uint32_t a_width;
uint8_t rm_gain;
uint16_t entries;
}YAC;
 
 
void yac_init( YAC * yac,
uint32_t base,
uint32_t xy_width,
uint32_t a_width,
uint8_t rm_gain,
uint16_t entries );
 
void yac_single( YAC * yac,
int32_t * x_i,
int32_t * y_i,
int32_t * z_i,
int32_t * x_o,
int32_t * y_o,
int32_t * z_o,
uint8_t * mode );
 
 
 
#endif /* _YAC_H_ */
 

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