background image

5

The master reads one or more data bytes in succession. The 

internal device address pointer auto increments with each 

byte access.

6

The master strobes the acknowledge bit following each data 

byte except for the final byte in the transfer before sending 

the stop condition.

7

After the read cycle is done, the master sends a stop 

condition to complete the operation.

Write Operation

After the master establishes communication with the LIDAR 

device, writing to the LIDAR device operates as follows.

1

The master sends one or more 8-bit data blocks to the LIDAR 

device. The internal device address pointer auto increments 

with each byte access.

2

The LIDAR device sends an acknowledge bit to the master 

when it receives and writes a valid data byte.

3

After the write cycle is done, the master sends a stop 

condition to complete the operation.

Control Register List

NOTE: 

Unless otherwise noted, all registers contain one byte and are read and write.

Address R/W Name

Description

Initial Value Details

0x00

W

ACQ_COMMANDS

Device command

--

0x00

, page 5

0x01

R

STATUS

System status

--

0x01

, page 5

0x05

R/W ACQUISITION_COUNT

Maximum acquisition count

0xFF

0x05

, page 6

0x10

R

FULL_DELAY_LOW

Distance measurement low byte

--

0x10

, page 6

0x11

R

FULL_DELAY_HIGH

Distance measurement high byte

--

0x11

, page 6

0x16

R

UNIT_ID_0

Unit ID, byte 0

--

0x16

, page 6

0x16

W

UNIT_ID_0_UNLOCK

Write unit ID 0 for I2C address unlock

--

0x16

, page 6

0x17

R

UNIT_ID_1

Unit ID, byte 1

--

0x17

, page 6

0x17

W

UNIT_ID_1_UNLOCK

Write unit ID 1 for I2C address unlock

--

0x17

, page 6

0x18

R

UNIT_ID_2

Unit ID, byte 2

--

0x18

, page 6

0x18

W

UNIT_ID_2_UNLOCK

Write unit ID 2 for I2C address unlock

--

0x18

, page 6

0x19

R

UNIT_ID_3

Unit ID, byte 3

--

0x19

, page 6

0x19

W

UNIT_ID_3_UNLOCK

Write unit ID 3 for I2C address unlock

--

0x19

, page 6

0x1A

R/W I2C_SEC_ADDR

Write new I2C address after unlock

--

0x1A

, page 6

0x1B

W

I2C_CONFIG

Default address response control

0x00

0x1B

, page 6

0x1C

R/W DETECTION_SENSITIVITY

Peak detection threshold bypass

0x00

0x1C

, page 6

0x30

R

LIB_VERSION

Read Garmin software library version string --

0x30

, page 7

0x52

R/W CORR_DATA

Correlation record data control

--

0x52

, page 7

0x72

R

CP_VER_LO

Coprocessor firmware version low byte

--

0x72

, page 7

0x73

R

CP_VER_HI

Coprocessor firmware version high byte

--

0x73

, page 7

0xE0

R

BOARD_TEMPERATURE

Board temperature

--

0xE0

, page 7

0xE1

R

HARDWARE_VERSION

Board hardware version

--

0xE1

, page 7

0xE2

R/W POWER_MODE

Power state control

0xFF

0xE2

, page 7

0xE3

R/W MEASUREMENT_INTERVAL Automatic measurement rate

0xFF

0xE3

, page 7

0xE4

W

FACTORY_RESET

Reset default settings

--

0xE4

, page 7

0xE5

R/W QUICK_TERMINATION

Quick acquisition termination

0x08

0xE5

, page 7

0xE6

W

START_BOOTLOADER

Start secure Bluetooth LE bootloader

--

0xE6

, page 7

0xEA

R/W ENABLE_FLASH_STORAGE Store register settings

0x00

0xEA

, page 7

0xEB

R/W HIGH_ACCURACY_MODE

Improved accuracy setting

0x14

0xEB

, page 8

0xEC

R

SOC_TEMPERATURE

SoC temperature

--

0xEC

, page 8

0x00

R/W

Name

Description

Initial Value

W

ACQ_COMMANDS

Device command

--

Bit Function

7:0 Write 0x03: Take distance measurement without receiver bias 

correction
Write 0x04: Take distance measurement with receiver bias 
correction

0x01

R/W

Name

Description

Initial Value

R

STATUS

System status

--

Bit Function

5

DC error flag
0: No error detected
1: An error was detected in correcting DC noise bias, and distance 
measurements are expected to be inaccurate

4

DC bias done flag
0: The device is performing automatic DC noise bias corrections
1: DC noise is within tolerance, and the automatic DC noise bias 
corrections are currently idle

3

Low power flag
0: Device is powered on. I2C commands can be issued at a normal 
rate.
1: The device is in low power mode. To allow the device to power 
on and perform the I2C command, a 10ms delay after each 
command is recommended.

5

Содержание LIDAR-LITE V4 LED

Страница 1: ...in 10 6 mm 0 42 in 24 03 mm 0 95 in 1 mm 0 04 in 18 mm 0 71 in 21 35 mm 0 84 in 21 2 mm 0 83 in Mounting Options Cable tie You can secure the device to your application using a 3 6 mm 0 14 in wide cab...

Страница 2: ...the sequence again Interface Initialization When you turn on or reset the device it performs a self test sequence and initializes all registers with default values After roughly 22 ms you can take dis...

Страница 3: ...ing Wirelessly Using ANT Before you can connect to the LIDAR Lite v4 LED using ANT you must complete these tasks Install Windows 7 Service Pack 1 or higher on your PC Install Net Framework 4 5 or high...

Страница 4: ...LIDAR device responds by pulling SDA low during the ninth clock pulse This operation is considered the acknowledge bit At this stage all other devices on the bus remain idle while the selected LIDAR...

Страница 5: ...C_ADDR Write new I2C address after unlock 0x1A page 6 0x1B W I2C_CONFIG Default address response control 0x00 0x1B page 6 0x1C R W DETECTION_SENSITIVITY Peak detection threshold bypass 0x00 0x1C page...

Страница 6: ...R UNIT_ID_2 Unit ID byte 2 W UNIT_ID_2_UNLOCK Write unit ID 2 for I2C address unlock Bit Function 7 0 Read byte two of the unit ID Write the value in UNIT_ID_2 here as part of enabling a non default...

Страница 7: ...is always OFF unless a distance measurement is requested or a register access is required 0x01 Synchronous Mode Distance measurement is tied to the ANT channel period The coprocessor is turned on and...

Страница 8: ...fter reprogramming the device you can follow the Bluetooth LE Secure DFU Bootloader reference design in the Nordic nRF5 SDK If a boot pin is required you should configure it to one of the exposed GPIO...

Страница 9: ...LED device still has the default application installed from the factory verify that you have the Garmin developer key selected If you have reprogrammed the device and you are using the public network...

Страница 10: ...2019 Garmin Ltd or its subsidiaries support garmin com...

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