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zpu: Add functions to read/write TCXO DAC calibration from EEPROM.

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This commit is contained in:
Alexander Chemeris
2017-07-28 21:25:16 +03:00
parent c0b8fc6687
commit 96ac532510
2 changed files with 57 additions and 0 deletions
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18
zpu/lib/eeprom.c
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@@ -1,5 +1,6 @@
/*
* Copyright 2007 Free Software Foundation, Inc.
* Copyright 2017 Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -22,6 +23,8 @@
static const int EEPROM_PAGESIZE = 16;
#define EEPROM_TCXO_DAC_OFFSET (0xFF-3)
bool find_safe_booted_flag(void) {
#ifdef NO_EEPROM
return 0;
@@ -91,3 +94,18 @@ eeprom_read (int i2c_addr, int eeprom_offset, void *buf, int len)
return true;
}
#endif
uint16_t
eeprom_read_tcxo_dac()
{
uint16_t val;
eeprom_read(USRP2_I2C_ADDR_MBOARD, EEPROM_TCXO_DAC_OFFSET, &val, 2);
return (val>>8)+(val<<8);
}
bool
eeprom_write_tcxo_dac(uint16_t tcxo_dac)
{
uint16_t val = (tcxo_dac>>8)+(tcxo_dac<<8);
return eeprom_write(USRP2_I2C_ADDR_MBOARD, EEPROM_TCXO_DAC_OFFSET, &val, 2);
}

39
zpu/lib/eeprom.h Normal file
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@@ -0,0 +1,39 @@
/*
* Copyright 2017 Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_EEPROM_H
#define INCLUDED_EEPROM_H
/* Safe booted or not? (read from EEPROM) */
bool find_safe_booted_flag(void);
/* Store safe booted flag to EEPROM */
void set_safe_booted_flag(bool flag);
/* Write to EEPROM */
bool eeprom_write(int i2c_addr, int eeprom_offset, const void *buf, int len);
/* Read from EEPROM */
bool eeprom_read(int i2c_addr, int eeprom_offset, void *buf, int len);
/* Read TCXO DAC calibrtion value from EEPROM */
uint16_t eeprom_read_tcxo_dac();
/* Write TCXO DAC calibrtion value to EEPROM */
bool eeprom_write_tcxo_dac(uint16_t tcxo_dac);
#endif /* INCLUDED_EEPROM_H */