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====== AD-FMCOMMS1-EBZ Calibration EEPROM Utility ======
{{page>/wiki/common#retired&nofooter&noheader}}

<xterm>
**NAME**
       xcomm_cal - print and set EEPROM calibration data

**SYNOPSIS**
       xcomm_cal [-s] [-f FREQUENCY] INPUT_FILE

**DESCRIPTION**
	Print and set EEPROM calibration data. 
	Without option - print all calibration sets available.

	-f Target frequency in MHz

	-s Initialize device drivers with best match calibration set.
	   This option is used together with the -f option.
</xterm>


===== Download/Install =====

Git: [[https://github.com/analogdevicesinc/fmcomms1-eeprom-cal]]

<xterm>
root@linaro-ubuntu-desktop:~# **git clone https://github.com/analogdevicesinc/fmcomms1-eeprom-cal.git**
root@linaro-ubuntu-desktop:~# **cd fmcomms1-eeprom-cal**
root@linaro-ubuntu-desktop:~# **make**
root@linaro-ubuntu-desktop:~# **make install**
</xterm>

===== Find the EEPROM =====

Normally, the calibration EEPROM responds to I2C Slave address 0x55, but it depends on the hardware carrier, and the slot that the card is plugged into.

To find the eeprom - use the ''find'' command.
<xterm>
root@linaro-ubuntu-desktop:~# **find /sys/ -name eeprom**
/sys/devices/amba.1/41600000.i2c/i2c-1/1-0050/eeprom
/sys/devices/amba.1/41600000.i2c/i2c-1/1-0054/eeprom
</xterm>

It's normally the largest value. (the smaller value is the [[./fru_dump|FRU eeprom]]).

===== Query best match calibration set for a given Frequency =====

<WRAP box bggreen><wrap info>This specifies any shell prompt running on the target</wrap>
<xterm>
# **xcomm_cal -f 2400 -s /sys/bus/i2c/devices/0-0055/eeprom**

--- Best match ENTRY 1 ---
Calibration Frequency:  2400 MHz
DAC I Phase Adjust:             357
DAC Q Phase Adjust:             0
DAC I Offset:           214
DAC Q Offset:           25
DAC I Full Scale Adj:   401
DAC Q Full Scale Adj:   401
ADC I Offset:           -2
ADC Q Offset:           -34
ADC I Gain Adj: 32853
ADC Q Gain Adj: 32768
</xterm></WRAP>
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