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/*!
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/*!
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ZTEX Firmware Kit for EZ-USB Microcontrollers
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ZTEX Firmware Kit for EZ-USB FX2 Microcontrollers
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Copyright (C) 2009-2010 ZTEX e.K.
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Copyright (C) 2009-2011 ZTEX GmbH.
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http://www.ztex.de
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http://www.ztex.de
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 3 as
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it under the terms of the GNU General Public License version 3 as
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published by the Free Software Foundation.
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published by the Free Software Foundation.
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Line 27... |
#define[EEPROM_ADDR][0xA2]
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#define[EEPROM_ADDR][0xA2]
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/* *********************************************************************
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/* *********************************************************************
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***** global variables **********************************************
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***** global variables **********************************************
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********************************************************************* */
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********************************************************************* */
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xdata WORD eeprom_addr;
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__xdata WORD eeprom_addr;
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xdata WORD eeprom_write_bytes;
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__xdata WORD eeprom_write_bytes;
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xdata BYTE eeprom_write_checksum;
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__xdata BYTE eeprom_write_checksum;
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/* *********************************************************************
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/* *********************************************************************
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***** i2c_waitWrite *************************************************
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***** i2c_waitWrite *************************************************
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********************************************************************* */
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********************************************************************* */
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Line 98... |
***** eeprom_select *************************************************
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***** eeprom_select *************************************************
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********************************************************************* */
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********************************************************************* */
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/* Select the EEPROM device, i.e. send the control Byte.
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/* Select the EEPROM device, i.e. send the control Byte.
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<to> specifies the time to wait in 0.1ms steps if the EEPROM is busy (during a write cycle).
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<to> specifies the time to wait in 0.1ms steps if the EEPROM is busy (during a write cycle).
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if <stop>=0 no sop bit is sent. Returns 1 on error or if EEPROM is busy. */
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if <stop>=0 no sop bit is sent. Returns 1 on error or if EEPROM is busy. */
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BYTE eeprom_select ( BYTE to, BYTE stop ) {
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BYTE eeprom_select (BYTE addr, BYTE to, BYTE stop ) {
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BYTE toc = 0;
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BYTE toc = 0;
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eeprom_select_start:
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eeprom_select_start:
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I2CS |= bmBIT7; // start bit
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I2CS |= bmBIT7; // start bit
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i2c_waitStart();
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i2c_waitStart();
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I2DAT = EEPROM_ADDR; // select device for writing
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I2DAT = addr; // select device for writing
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if ( ! i2c_waitWrite() ) {
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if ( ! i2c_waitWrite() ) {
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if ( stop ) {
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if ( stop ) {
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I2CS |= bmBIT6;
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I2CS |= bmBIT6;
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i2c_waitStop();
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i2c_waitStop();
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}
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}
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Line 132... |
BYTE bytes = 0,i;
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BYTE bytes = 0,i;
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if ( length == 0 )
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if ( length == 0 )
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return 0;
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return 0;
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if ( eeprom_select(100,0) )
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if ( eeprom_select(EEPROM_ADDR, 100,0) )
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goto eeprom_read_end;
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goto eeprom_read_end;
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I2DAT = HI(addr); // write address
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I2DAT = HI(addr); // write address
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if ( i2c_waitWrite() ) goto eeprom_read_end;
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if ( i2c_waitWrite() ) goto eeprom_read_end;
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I2DAT = LO(addr); // write address
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I2DAT = LO(addr); // write address
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Line 170... |
}
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}
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/* *********************************************************************
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/* *********************************************************************
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***** eeprom_write **************************************************
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***** eeprom_write **************************************************
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********************************************************************* */
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********************************************************************* */
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/* Writes <length> bytes from buf to and write them EEPROM address <addr>.
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/* Writes <length> bytes from buf to EEPROM address <addr>.
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<length> must be smaller or equal than 64. Returns the number of bytes
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<length> must be smaller or equal than 8. Returns the number of bytes
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read. This number is 0 during a write cycle. */
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read. This number is 0 during a write cycle. */
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BYTE eeprom_write ( __xdata BYTE *buf, WORD addr, BYTE length ) {
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BYTE eeprom_write ( __xdata BYTE *buf, WORD addr, BYTE length ) {
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BYTE bytes = 0;
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BYTE bytes = 0;
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if ( eeprom_select(100,0) )
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if ( eeprom_select(EEPROM_ADDR, 100,0) )
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goto eeprom_write_end;
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goto eeprom_write_end;
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I2DAT = HI(addr); // write address
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I2DAT = HI(addr); // write address
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if ( i2c_waitWrite() ) goto eeprom_write_end;
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if ( i2c_waitWrite() ) goto eeprom_write_end;
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I2DAT = LO(addr); // write address
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I2DAT = LO(addr); // write address
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********************************************************************* */
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********************************************************************* */
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ADD_EP0_VENDOR_REQUEST((0x3A,, // EEPROM state
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ADD_EP0_VENDOR_REQUEST((0x3A,, // EEPROM state
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EP0BUF[0] = LSB(eeprom_write_bytes);
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EP0BUF[0] = LSB(eeprom_write_bytes);
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EP0BUF[1] = MSB(eeprom_write_bytes);
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EP0BUF[1] = MSB(eeprom_write_bytes);
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EP0BUF[2] = eeprom_write_checksum;
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EP0BUF[2] = eeprom_write_checksum;
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EP0BUF[3] = eeprom_select(0,1); // 1 means busy or error
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EP0BUF[3] = eeprom_select(EEPROM_ADDR,0,1); // 1 means busy or error
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EP0BCH = 0;
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EP0BCH = 0;
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EP0BCL = 4;
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EP0BCL = 4;
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,,));;
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,,));;
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#ifdef[MAC_EEPROM_ENABLED]
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#define[EEPROM_MAC_ADDR][0xA6]
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#define[@CAPABILITY_MAC_EEPROM;]
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__xdata BYTE mac_eeprom_addr;
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/* *********************************************************************
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***** mac_eeprom_read ***********************************************
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********************************************************************* */
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/* Reads <length> bytes from EEPROM address <addr> and write them to buf.
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Returns the number of bytes read. This number is 0 during a write cycle. */
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BYTE mac_eeprom_read ( __xdata BYTE *buf, BYTE addr, BYTE length ) {
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BYTE bytes = 0,i;
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if ( length == 0 )
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return 0;
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if ( eeprom_select(EEPROM_MAC_ADDR, 100,0) )
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goto mac_eeprom_read_end;
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I2DAT = addr; // write address
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if ( i2c_waitWrite() ) goto mac_eeprom_read_end;
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I2CS |= bmBIT6;
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i2c_waitStop();
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I2CS |= bmBIT7; // start bit
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i2c_waitStart();
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I2DAT = EEPROM_MAC_ADDR | 1; // select device for reading
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if ( i2c_waitWrite() ) goto mac_eeprom_read_end;
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*buf = I2DAT; // dummy read
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if ( i2c_waitRead()) goto mac_eeprom_read_end;
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for (; bytes<length; bytes++ ) {
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*buf = I2DAT; // read data
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buf++;
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if ( i2c_waitRead()) goto mac_eeprom_read_end;
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}
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I2CS |= bmBIT5; // no ACK
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i = I2DAT; // dummy read
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if ( i2c_waitRead()) goto mac_eeprom_read_end;
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I2CS |= bmBIT6; // stop bit
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i = I2DAT; // dummy read
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i2c_waitStop();
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mac_eeprom_read_end:
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return bytes;
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}
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/* *********************************************************************
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***** mac_eeprom_write **********************************************
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********************************************************************* */
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/* Writes <length> bytes from buf to and write them EEPROM address <addr>.
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<length> must be smaller or equal than 8. Returns the number of bytes
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read. This number is 0 during a write cycle. */
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BYTE mac_eeprom_write ( __xdata BYTE *buf, BYTE addr, BYTE length ) {
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BYTE bytes = 0;
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if ( eeprom_select(EEPROM_MAC_ADDR, 100,0) )
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goto mac_eeprom_write_end;
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I2DAT = addr; // write address
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if ( i2c_waitWrite() ) goto mac_eeprom_write_end;
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for (; bytes<length; bytes++ ) {
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I2DAT = *buf; // write data
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buf++;
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if ( i2c_waitWrite() ) goto mac_eeprom_write_end;
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}
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I2CS |= bmBIT6; // stop bit
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i2c_waitStop();
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mac_eeprom_write_end:
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return bytes;
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}
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/* *********************************************************************
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***** EP0 vendor request 0x3B ***************************************
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********************************************************************* */
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BYTE mac_eeprom_read_ep0 () {
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BYTE i, b;
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b = ep0_payload_transfer;
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i = mac_eeprom_read(EP0BUF, mac_eeprom_addr, b);
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return i;
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}
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ADD_EP0_VENDOR_REQUEST((0x3B,, // read from EEPROM
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mac_eeprom_addr = SETUPDAT[2]; // Address
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EP0BCH = 0;
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EP0BCL = mac_eeprom_read_ep0();
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,,
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EP0BCH = 0;
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EP0BCL = mac_eeprom_read_ep0();
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));;
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/* *********************************************************************
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***** EP0 vendor command 0x3C ***************************************
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********************************************************************* */
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ADD_EP0_VENDOR_COMMAND((0x3C,, // write to EEPROM
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mac_eeprom_addr = SETUPDAT[2]; // address
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,,
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mac_eeprom_write(EP0BUF, mac_eeprom_addr, EP0BCL);
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));;
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/* *********************************************************************
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***** EP0 vendor request 0x3D ***************************************
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********************************************************************* */
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ADD_EP0_VENDOR_REQUEST((0x3D,, // EEPROM state
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EP0BUF[0] = eeprom_select(EEPROM_MAC_ADDR,0,1); // 1 means busy or error
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EP0BCH = 0;
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EP0BCL = 1;
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,,));;
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#endif // MAC_EEPROM_ENABLED
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#endif /*ZTEX_EEPROM_H*/
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#endif /*ZTEX_EEPROM_H*/
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No newline at end of file
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No newline at end of file
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