DVK-PRM122 Laird Technologies, DVK-PRM122 Datasheet - Page 34

• Manufacturer Part Number: DVK-PRM122
• Description: DEV KIT PRM122
• Manufacturer: Laird Technologies
• Series: FlexRF™r
• Type: Transceiver, FHSSr

Specifications of DVK-PRM122

• Frequency: 2.4GHz
• Output Power: 50 mW
• Antenna: U.FL Coaxial
• Silicon Manufacturer: Laird Technologies
• Kit Application Type: Communication & Networking
• Application Sub Type: Wireless Module
• Features: Very Robust In The Presence Of Interference Global
• Rohs Compliant: Yes
• For Use With/related Products: PRM122
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

LT2510
Wireless Module
CONFIGURING
THE LT2510
31 www.lairdtech.com
COMMAND DESCRIPTIONS
Read API Control
The OEM Host issues this command to read the API
Control byte.
Write API Control
The OEM Host issues this command to write the API
Control byte to enable or disable the API features.
Read Digital Inputs
The OEM Host issues this command to read the state of
both digital output lines.
Read ADC
The OEM host issues this command to read the analog
to digital converters at up to 12-bit resolution. Higher
resolutions can cause slower responses from the
command. The time required for a conversion is:
Tconv = (decimation rate + 16) * 0.23uS.
In most applications this will be used to measure the
input voltage (to detect reduced battery power) with
Vcc/3, the temperature sensor or the Analog input
pin. For the most accurate results the 1.25V internal
reference should be chosen, though this would limit
the OEM to a maximum A/D Input of 1.25V. Vcc/3 and
the temperature sensor readings should use the internal
1.25v reference as those voltages will never exceed 1.25v.
The ADC result is represented in a two’s complement
form. The result is the difference between ground and
the selected channel and will be a value between -2048
and 2047 with 2047 representing the maximum value
where the ADC result equals the reference voltage and
-2048 equals the negative of the reference voltage.
The ADC cannot measure a voltage higher than the
reference voltage.
Get Last RSSI
This command is used to report signal strength (RSSI)
information from the last RF Packet the radio received.
This command will report the signal strength of any
received RF packet including the Server beacon, data
packets and even RF Packets that were not intended for
this radio (eg: packets with a different Destination MAC
Address than this radio).
Command:
Number of Bytes Returned:
Response:
Parameter Range:
<Auto Dest> = bits 7-3: 0
Command:
Number of Bytes Returned:
Response:
Parameter Range:
<Digital Out>
Command:
Number of Bytes Returned:
Response:
Parameter Range:
<Data bits 7-6> = <Reference Voltage>
<Data bits 5-4>= <Resolution>
<Data bits 3-0>= <Channel>
<Hi ADC> = MSB or requested 12-bit ADC value
<Lo ADC> = LSB of requested 12-bit ADC value
Command:
Number of Bytes Returned:
Response:
Parameter Range:
<RSSI>: 0x00 – 0xFF
Command:
Number of Bytes Returned:
Response:
Parameter Range:
<Auto Dest> = bits 7-3: 0
00: Internal 1.25V reference
10: Voltage on Vcc pin
00: 64 decimation rate (7 bits resolution)
01: 128 decimation rate (9 bits resolution)
10: 256 decimation rate (10 bits resolution)
11: 512 decimation rate (12 bits resolution)
0000: AD/In (GIO_7)
1100: GND
1101: Positive Voltage Reference
1110: Temperature Sensor
1111: Vcc/3
<0xCC> <API Control>
0xCC <Digital Out>
0xCC <Hi ADC> <Lo ADC>
<0xCC> <RSSI>
<0xCC> <API Control>
<0xCC> <0x17> <API Control>
<0xCC> <0x20>
<0xCC> <0x21> <Data>
<0xCC> <0x22>
<0xCC> <0x16>
= bit-1: GIO_8
= bit-0: GIO_4
bit-2: Send Data Complete
bit-1: Transmit API
bit-0: Receive API
bit-2: Send Data Complete
bit-1: Transmit API
bit-0: Receive API
2
2
3
2
2
Laird Technologies