uwr.h

TDK 6521 SOC 芯片 DEMO程序

/***************************************************************************
 * This code and information is provided "as is" without warranty of any   *
 * kind, either expressed or implied, including but not limited to the     *
 * implied warranties of merchantability and/or fitness for a particular   *
 * purpose.                                                                *
 *                                                                         *
 * Copyright (C) 2005 Teridian Semiconductor Corp. All Rights Reserved.    *
 ***************************************************************************/
//**************************************************************************
//    
//  DESCRIPTION: 71M651x POWER METER - Serial EEPROM Routines. 
// 
//  AUTHOR:  RGV
//
//  HISTORY: See end of file
//
//**************************************************************************
//               
// File: UWR.H
// This is the API to a half-duplex clocked serial bus master using 
// DIO_4 and DIO_5 as clock and data, with other DIO pin(s) as the 
// select (usually DIO_8 on TSC hardware).  Some vendors call this the
// "microwire" bus, abbreviated as uWire, or uwr.
// The default clock polarity is the standard one for microwire, "LR", 
// that is, data out (from the meter chip) is valid when the "L"eading 
// of the clock "R"ises, data in (to the meter chip) is therefore valid 
// when the trailing edge of the clock falls.
// It works with two files:
//
// uwreep.c interfaces to the 652x's microwire hardware.  It clocks at
// 500 KHz, but handles only the most standard clock polarity, LR, and runs 
// the data pin in half-duplex. It can drive some devices designed 
// for half-duplex operation, such as microwire EEPROMs.
//
// uwrdio.c is a software implementation that only clocks at about 260 KHz.
// It provides a compatible microwire and SPI system for the 6511 and 6513 
// meter chips, which lack a hardware controller.
// To handle more devices, it has code to handle all 4 clock polarities, 
// and can be modified to a half duplex SPI interface with separate
// in and out pins, or even a full-duplex SPI interface.
//**************************************************************************
// Microwire API.
//
#ifndef UWR_H
#if EEPROM
#define UWR_H 1

// initialize the microwire system
void uwr_init (void) small reentrant;

// select a chip by passing its address; 0 = none
void uwr_select (uint8_t adr) small reentrant;
// Modify this list of device addresses for your project
#define UWR_NO_DEVICE 0
#define UWR_93C76C_0 1

// wait for programming complete; This is probably only useful
// with microwire EEPROMs.
void uwr_busy_wait (void) small reentrant;

// transmit a counted string of bytes
uint8_t uwr_write(uint8x_t *pchOut, uint16_t cnt) small reentrant;

// receive a counted string of bytes
void uwr_read(uint8x_t *pchIn, uint16_t cnt) small reentrant;

#endif // if EEPROM
#endif // if not defined UWR_H
/***************************************************************************
 * $Log: uwr.h,v $
 * Revision 1.8  2006/09/09 01:10:17  gmikef
 * *** empty log message ***
 *
 * Revision 1.7  2006/08/09 00:56:37  tvander
 * *** empty log message ***
 *
 * Revision 1.6  2006/06/15 19:56:37  tvander
 * Coded fixes to enable operation from interrupts.
 *
 * Revision 1.5  2006/05/18 23:18:45  tvander
 * 16K and 32K
 * First cut at new requirements.
 * 32K 6521 is grossly tested.
 * All others have a clean compile with C51 8.02
 *
 * Revision 1.4  2006/03/06 03:32:33  Michael T. Fischer
 * More 6530 prep.
 *
 * Revision 1.3  2006/01/16 20:11:23  tvander
 * Clean Keil build, all versions
 *
 * Revision 1.1  2005/10/26 23:52:21  tvander
 * Microwire EEPROM access via DIO
 *
 *
 * Copyright (C) 2005 Teridian Semiconductor Corp. All Rights Reserved.    *
 * this program is fully protected by the United States copyright          *
 * laws and is the property of Teridian Semiconductor Corporation.         *
 ***************************************************************************/