iai_ebid.c

silicon wireless开发套件F920+Si4432原理图,源码

/*
** ============================================================================
**
** FILE
**  IAI_EBID.c
**
** DESCRIPTION
**  Testcard Board Identification EEPROM handling
**
** CREATED
**  Silicon Laboratories Hungary Ltd
**
** COPYRIGHT
**  Copyright 2008 Silicon Laboratories, Inc.  
**	http://www.silabs.com
**
** ============================================================================
*/
/*------------------------------------------------------------------------*/
/*						INCLUDE											  */
/*------------------------------------------------------------------------*/
#include "IAI_EBID.h"
#include <string.h>
#include "IA443x_rf.h"

/*------------------------------------------------------------------------*/
/*						GLOBAL variables								  */
/*------------------------------------------------------------------------*/
xdata EBID_DATA	TestcardData;
xdata SPECIAL_REGISTERS SpecialRegisters;

/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  +
  + FUNCTION NAME:  EBID_DATABASES GetEBIDDataFromEEPROM(void)
  +
  + DESCRIPTION:    It read the data from the EEPROM and set the variables accordingly
  +
  + RETURN:         the EEPROM database
  +
  + NOTES:          
  +
  +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
EBID_DATABASES GetEBIDDataFromEEPROM(void)
{
	xdata uint8 temp8, i, string[9];
	xdata uint16 temp16;

	TestcardData.valid_info = FALSE;

	//figure out what database (s) are available
	temp8 = SpiReadByteFromTestcardEEPROM( 0x0000 );
	if( (temp8 & POWER_DB) == POWER_DB )
	{//the Power Description Database is implemented, use this
		return POWER_DB;
	}
	if( (temp8 & WIRELINE_DB) == WIRELINE_DB )
	{//the Wireline Description Database is implemented, use this
		return WIRELINE_DB;
	}
	if( (temp8 & WIRELESS_DB) == WIRELESS_DB )
	{//the Wireless Description Database is implemented, use this
		TestcardData.valid_info = TRUE;
		//find out the chip type
		TestcardData.chip_type = NOT_AVAILABLE;
		SpiReadSegmentFromTestcardEEPROM(0x0010, string, 8);
		if( memcmp(&string[2], "4020", 4) == 0 )	TestcardData.chip_type = SI4020;
		if( memcmp(&string[2], "4021", 4) == 0 )	TestcardData.chip_type = SI4021;
		if( memcmp(&string[2], "4022", 4) == 0 )	TestcardData.chip_type = SI4022;
		if( memcmp(&string[2], "4030", 4) == 0 )	TestcardData.chip_type = SI4030;
		if( memcmp(&string[2], "4031", 4) == 0 )	TestcardData.chip_type = SI4031;
		if( memcmp(&string[2], "4032", 4) == 0 )	TestcardData.chip_type = SI4032;
		if( memcmp(&string[2], "4315", 4) == 0 )	TestcardData.chip_type = SI4315;
		if( memcmp(&string[2], "4320", 4) == 0 )	TestcardData.chip_type = SI4320;
		if( memcmp(&string[2], "4322", 4) == 0 )	TestcardData.chip_type = SI4322;
		if( memcmp(&string[2], "4330", 4) == 0 )	TestcardData.chip_type = SI4330;
		if( memcmp(&string[2], "4322", 4) == 0 )	TestcardData.chip_type = SI4322;
		if( memcmp(&string[2], "4420", 4) == 0 )	TestcardData.chip_type = SI4420;
		if( memcmp(&string[2], "4421", 4) == 0 )	TestcardData.chip_type = SI4421;
		if( memcmp(&string[2], "4430", 4) == 0 )	TestcardData.chip_type = SI4430;
		if( memcmp(&string[2], "4431", 4) == 0 )	TestcardData.chip_type = SI4431;
		if( memcmp(&string[2], "4432", 4) == 0 )	TestcardData.chip_type = SI4432;		
		if( memcmp(&string[2], "4520", 4) == 0 )	TestcardData.chip_type = SI4520;
		//get chip revision
		SpiReadSegmentFromTestcardEEPROM(0x0018, &TestcardData.chip_revision[0], 2);
		//get serial number
		temp8 = SpiReadByteFromTestcardEEPROM( 0x0034 );
		TestcardData.serial_nmbr = ((uint16)temp8 << 8) + SpiReadByteFromTestcardEEPROM( 0x0035 );
		//get supported frequency bands
		temp8 = SpiReadByteFromTestcardEEPROM( 0x0043 );
		TestcardData.freq_band = ((uint16)temp8 << 8) + SpiReadByteFromTestcardEEPROM( 0x0044 );
		//get antenna connection type
		TestcardData.ant_type = SpiReadByteFromTestcardEEPROM( 0x0045 );
		//get special registers
		temp8 = SpiReadByteFromTestcardEEPROM( 0x004F);
		SpecialRegisters.nmbr_of_registers = temp8;
		if( temp8 > 0 )
		{
			for(i=0;i<temp8;i++)
			{
				temp16 = ((uint16)SpiReadByteFromTestcardEEPROM(0x0050 + (i << 1) )) << 8;
				temp16 += (uint16)SpiReadByteFromTestcardEEPROM(0x0050 + ((i << 1)+1));
				SpecialRegisters.registers[i] = temp16;
			}
		}
		return WIRELESS_DB;
	}
	//check whether demo specific database is implemented or not
	switch( temp8 & 0x0F )
	{
		case EZRADIO_PRO:
			TestcardData.valid_info = TRUE;
			TestcardData.chip_type = SI4432;
			TestcardData.chip_revision[0] = 'X';
			TestcardData.chip_revision[1] = '2';
			TestcardData.serial_nmbr = (uint16)SpiReadByteFromTestcardEEPROM( 0x0001 );
			TestcardData.freq_band = 0x0300;			//868-960MHz
			TestcardData.ant_type = SEPARATE_SMA;
			//set special registers
			SpecialRegisters.nmbr_of_registers = 2;
			SpecialRegisters.registers[0] = ((uint16)(VCOCurrentTrimming | 0x80) << 8) + (uint16)SpiReadByteFromTestcardEEPROM( 0x0002 );
			SpecialRegisters.registers[1] = ((uint16)( CrystalOscillatorLoadCapacitance | 0x80) << 8) + (uint16)SpiReadByteFromTestcardEEPROM( 0x0003 );
		break;

		case EZRADIO_PRO_OFFSET:
			TestcardData.valid_info = TRUE;
			TestcardData.chip_type = SI4432;
			TestcardData.chip_revision[0] = 'X';
			TestcardData.chip_revision[1] = '2';
			TestcardData.serial_nmbr = (uint16)SpiReadByteFromTestcardEEPROM( 0x0001 );
			//figure out the frequency band
			temp8 = SpiReadByteFromTestcardEEPROM( 0x0004 );
			switch( temp8 )
			{
				case 0xFE:
					TestcardData.freq_band = 0x0010;			//434MHz
				break;

				case 0xFF:
				default:
					TestcardData.freq_band = 0x0300;			//868-960MHz
				break;
			}
			//figure out the antenna connection type
			temp8 = SpiReadByteFromTestcardEEPROM( 0x0005 );
			switch( temp8 )
			{
				case 0xFD:
					TestcardData.ant_type = ANT_DIVERSITY;			
				break;

				case 0xFE:
					TestcardData.ant_type = SMA_TRX_SWITCH;			
				break;

				case 0xFF:
				default:
					TestcardData.ant_type = SEPARATE_SMA;			
				break;
			}
			//set special registers
			SpecialRegisters.nmbr_of_registers = 4;
			SpecialRegisters.registers[0] = ((uint16)(VCOCurrentTrimming | 0x80) << 8) + (uint16)SpiReadByteFromTestcardEEPROM( 0x0002 );
			SpecialRegisters.registers[1] = ((uint16)(CrystalOscillatorLoadCapacitance | 0x80) << 8) + (uint16)SpiReadByteFromTestcardEEPROM( 0x0003 );
			SpecialRegisters.registers[2] = ((uint16)(0x80 | FrequencyOffset) << 8) + 0x00E3;
			SpecialRegisters.registers[3] = ((uint16)(0x80 | FrequencyChannelControl) << 8) + 0x0003;
		break;

		default:
			//no special database is available
			return NO_EEPROM;
		break;
	}
	return NO_EEPROM;
}

/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  +
  + FUNCTION NAME:  void SetSpecialRegisters(void)
  +
  + DESCRIPTION:    set all the special (not default) registers of the chip
  +	
  + RETURN:         None
  +
  +	INPUT:			None
  +
  + NOTES:          
  +
  +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
void SetSpecialRegisters(void)
{
	xdata uint8 i;
	xdata UU16 temp;

	for(i=0;i<SpecialRegisters.nmbr_of_registers;i++)
	{
		temp.U16 = SpecialRegisters.registers[i];
		SpiRfWriteWord( temp );
	}		
}