mirror of
https://github.com/saymrwulf/uhd.git
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039eceb4b2
Created a eeprom parser for the format in the dboard. Removed the support from the microblaze code.
78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
//
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// Copyright 2010 Ettus Research LLC
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//
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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 as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include <uhd/usrp/dboard_eeprom.hpp>
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#include <uhd/utils/assert.hpp>
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using namespace uhd;
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using namespace uhd::usrp;
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////////////////////////////////////////////////////////////////////////
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// format of daughterboard EEPROM
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// 00: 0xDB code for ``I'm a daughterboard''
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// 01: .. Daughterboard ID (LSB)
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// 02: .. Daughterboard ID (MSB)
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// 03: .. io bits 7-0 direction (bit set if it's an output from m'board)
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// 04: .. io bits 15-8 direction (bit set if it's an output from m'board)
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// 05: .. ADC0 DC offset correction (LSB)
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// 06: .. ADC0 DC offset correction (MSB)
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// 07: .. ADC1 DC offset correction (LSB)
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// 08: .. ADC1 DC offset correction (MSB)
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// ...
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// 1f: .. negative of the sum of bytes [0x00, 0x1e]
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#define DB_EEPROM_MAGIC 0x00
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#define DB_EEPROM_MAGIC_VALUE 0xDB
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#define DB_EEPROM_ID_LSB 0x01
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#define DB_EEPROM_ID_MSB 0x02
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#define DB_EEPROM_OE_LSB 0x03
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#define DB_EEPROM_OE_MSB 0x04
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#define DB_EEPROM_OFFSET_0_LSB 0x05 // offset correction for ADC or DAC 0
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#define DB_EEPROM_OFFSET_0_MSB 0x06
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#define DB_EEPROM_OFFSET_1_LSB 0x07 // offset correction for ADC or DAC 1
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#define DB_EEPROM_OFFSET_1_MSB 0x08
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#define DB_EEPROM_CHKSUM 0x1f
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#define DB_EEPROM_CLEN 0x20 // length of common portion of eeprom
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#define DB_EEPROM_CUSTOM_BASE DB_EEPROM_CLEN // first avail offset for
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// daughterboard specific use
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////////////////////////////////////////////////////////////////////////
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dboard_eeprom_t::dboard_eeprom_t(const byte_vector_t &buf){
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try{
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ASSERT_THROW(buf.size() >= num_bytes());
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ASSERT_THROW(buf[DB_EEPROM_MAGIC] == DB_EEPROM_MAGIC_VALUE);
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id = \
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(boost::uint16_t(buf[DB_EEPROM_ID_LSB]) << 0) |
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(boost::uint16_t(buf[DB_EEPROM_ID_MSB]) << 8) ;
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}catch(const uhd::assert_error &e){
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id = dboard_id::NONE;
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}
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}
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byte_vector_t dboard_eeprom_t::get_eeprom_bytes(void){
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byte_vector_t bytes(3);
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bytes[DB_EEPROM_MAGIC] = DB_EEPROM_MAGIC_VALUE;
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bytes[DB_EEPROM_ID_LSB] = boost::uint8_t(id >> 0);
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bytes[DB_EEPROM_ID_MSB] = boost::uint8_t(id >> 8);
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return bytes;
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}
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size_t dboard_eeprom_t::num_bytes(void){
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return 3;
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}
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