Shell - Segment Display 4x7 Bricklet 2.0¶

Numeric Value¶

Download (example-numeric-value.sh)

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#!/bin/sh
# Connects to localhost:4223 by default, use --host and --port to change this

uid=XYZ # Change XYZ to the UID of your Segment Display 4x7 Bricklet 2.0

tinkerforge call segment-display-4x7-v2-bricklet $uid set-brightness 7 # Set to full brightness

# Show "- 42" on the Display
tinkerforge call segment-display-4x7-v2-bricklet $uid set-numeric-value -- -- -2,-1,4,2

Set Segments¶

Download (example-set-segments.sh)

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#!/bin/sh
# Connects to localhost:4223 by default, use --host and --port to change this

uid=XYZ # Change XYZ to the UID of your Segment Display 4x7 Bricklet 2.0

tinkerforge call segment-display-4x7-v2-bricklet $uid set-brightness 7 # Set to full brightness

# Activate all segments
tinkerforge call segment-display-4x7-v2-bricklet $uid set-segments true,true,true,true,true,true,true,true true,true,true,true,true,true,true,true true,true,true,true,true,true,true,true true,true,true,true,true,true,true,true true,true true

Blink Colon¶

Download (example-blink-colon.sh)

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#!/bin/sh
# Connects to localhost:4223 by default, use --host and --port to change this

uid=XYZ # Change XYZ to the UID of your Segment Display 4x7 Bricklet 2.0

tinkerforge call segment-display-4x7-v2-bricklet $uid set-brightness 7 # Set to full brightness

# Blink colon 10 times
for i in 0 1 2 3 4 5 6 7 8 9; do

    # Activate segments of colon
    tinkerforge call segment-display-4x7-v2-bricklet $uid set-selected-segment 32 true
    tinkerforge call segment-display-4x7-v2-bricklet $uid set-selected-segment 33 true

    sleep 0.25

    # Deactivate segments of colon
    tinkerforge call segment-display-4x7-v2-bricklet $uid set-selected-segment 32 false
    tinkerforge call segment-display-4x7-v2-bricklet $uid set-selected-segment 33 false
done

Command Structure¶

The common options of the call and dispatch commands are documented here. The specific command structure is shown below.

tinkerforge call segment-display-4x7-v2-bricklet [<option>..] <uid> <function> [<argument>..]¶

Parameters:	<uid> – Type: String <function> – Type: String

The call command is used to call a function of the Segment Display 4x7 Bricklet 2.0. It can take several options:

• --help shows help for the specific call command and exits
• --list-functions shows a list of known functions of the Segment Display 4x7 Bricklet 2.0 and exits

tinkerforge dispatch segment-display-4x7-v2-bricklet [<option>..] <uid> <callback>¶

Parameters:	<uid> – Type: String <callback> – Type: String

The dispatch command is used to dispatch a callback of the Segment Display 4x7 Bricklet 2.0. It can take several options:

• --help shows help for the specific dispatch command and exits
• --list-callbacks shows a list of known callbacks of the Segment Display 4x7 Bricklet 2.0 and exits

tinkerforge call segment-display-4x7-v2-bricklet <uid> <function> [<option>..] [<argument>..]¶

Parameters:	<uid> – Type: String <function> – Type: String

The <function> to be called can take different options depending of its kind. All functions can take the following options:

• --help shows help for the specific function and exits

Getter functions can take the following options:

• --execute <command> shell command line to execute for each incoming response (see section about output formatting for details)

Setter functions can take the following options:

• --expect-response requests response and waits for it

The --expect-response option for setter functions allows to detect timeouts and other error conditions calls of setters as well. The device will then send a response for this purpose. If this option is not given for a setter function then no response is sent and errors are silently ignored, because they cannot be detected.

tinkerforge dispatch segment-display-4x7-v2-bricklet <uid> <callback> [<option>..]¶

Parameters:	<uid> – Type: String <callback> – Type: String

The <callback> to be dispatched can take several options:

• --help shows help for the specific callback and exits
• --execute <command> shell command line to execute for each incoming response (see section about output formatting for details)

Basic Functions¶

tinkerforge call segment-display-4x7-v2-bricklet <uid> set-segments <digit0> <digit1> <digit2> <digit3> <colon> <tick>¶

Parameters:	<digit0> – Type: Bool Array, Length: 8 <digit1> – Type: Bool Array, Length: 8 <digit2> – Type: Bool Array, Length: 8 <digit3> – Type: Bool Array, Length: 8 <colon> – Type: Bool Array, Length: 2 <tick> – Type: Bool
Output:	no output

Sets the segments of the Segment Display 4x7 Bricklet 2.0 segment-by-segment.

The data is split into the four digits, two colon dots and the tick mark.

The indices of the segments in the digit and colon parameters are as follows:

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-segments¶

Output:	digit0 – Type: Bool Array, Length: 8 digit1 – Type: Bool Array, Length: 8 digit2 – Type: Bool Array, Length: 8 digit3 – Type: Bool Array, Length: 8 colon – Type: Bool Array, Length: 2 tick – Type: Bool

Returns the segment data as set by set-segments.

tinkerforge call segment-display-4x7-v2-bricklet <uid> set-brightness <brightness>¶

Parameters:	<brightness> – Type: Int, Range: [0 to 7], Default: 7
Output:	no output

The brightness can be set between 0 (dark) and 7 (bright).

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-brightness¶

Output:	brightness – Type: Int, Range: [0 to 7], Default: 7

Returns the brightness as set by set-brightness.

tinkerforge call segment-display-4x7-v2-bricklet <uid> set-numeric-value <value>¶

Parameters:	<value> – Type: Int Array, Length: 4, Range: [-2 to 15]
Output:	no output

Sets a numeric value for each of the digits. They represent:

• -2: minus sign
• -1: blank
• 0-9: 0-9
• 10: A
• 11: b
• 12: C
• 13: d
• 14: E
• 15: F

Example: A call with [-2, -1, 4, 2] will result in a display of "- 42".

tinkerforge call segment-display-4x7-v2-bricklet <uid> set-selected-segment <segment> <value>¶

Parameters:	<segment> – Type: Int, Range: [0 to 34] <value> – Type: Bool
Output:	no output

Turns one specified segment on or off.

The indices of the segments are as follows:

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-selected-segment <segment>¶

Parameters:	<segment> – Type: Int, Range: [0 to 34]
Output:	value – Type: Bool

Returns the value of a single segment.

Advanced Functions¶

tinkerforge call segment-display-4x7-v2-bricklet <uid> start-counter <value-from> <value-to> <increment> <length>¶

Parameters:	<value-from> – Type: Int, Range: [-999 to 9999] <value-to> – Type: Int, Range: [-999 to 9999] <increment> – Type: Int, Range: [-999 to 9999] <length> – Type: Int, Unit: 1 ms, Range: [0 to 232 - 1]
Output:	no output

Starts a counter with the from value that counts to the to value with the each step incremented by increment. length is the pause between each increment.

Example: If you set from to 0, to to 100, increment to 1 and length to 1000, a counter that goes from 0 to 100 with one second pause between each increment will be started.

Using a negative increment allows to count backwards.

You can stop the counter at every time by calling set-segments or set-numeric-value.

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-counter-value¶

Output:	value – Type: Int, Range: [-999 to 9999]

Returns the counter value that is currently shown on the display.

If there is no counter running a 0 will be returned.

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-spitfp-error-count¶

Output:	error-count-ack-checksum – Type: Int, Range: [0 to 232 - 1] error-count-message-checksum – Type: Int, Range: [0 to 232 - 1] error-count-frame – Type: Int, Range: [0 to 232 - 1] error-count-overflow – Type: Int, Range: [0 to 232 - 1]

Returns the error count for the communication between Brick and Bricklet.

The errors are divided into

• ACK checksum errors,
• message checksum errors,
• framing errors and
• overflow errors.

The errors counts are for errors that occur on the Bricklet side. All Bricks have a similar function that returns the errors on the Brick side.

tinkerforge call segment-display-4x7-v2-bricklet <uid> set-status-led-config <config>¶

Parameters:	<config> – Type: Int, Range: See symbols, Default: 3
Output:	no output

Sets the status LED configuration. By default the LED shows communication traffic between Brick and Bricklet, it flickers once for every 10 received data packets.

You can also turn the LED permanently on/off or show a heartbeat.

If the Bricklet is in bootloader mode, the LED is will show heartbeat by default.

The following symbols are available for this function:

For <config>:

• status-led-config-off = 0
• status-led-config-on = 1
• status-led-config-show-heartbeat = 2
• status-led-config-show-status = 3

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-status-led-config¶

Output:	config – Type: Int, Range: See symbols, Default: 3

Returns the configuration as set by set-status-led-config

The following symbols are available for this function:

For config:

• status-led-config-off = 0
• status-led-config-on = 1
• status-led-config-show-heartbeat = 2
• status-led-config-show-status = 3

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-chip-temperature¶

Output:	temperature – Type: Int, Unit: 1 °C, Range: [-215 to 215 - 1]

Returns the temperature as measured inside the microcontroller. The value returned is not the ambient temperature!

The temperature is only proportional to the real temperature and it has bad accuracy. Practically it is only useful as an indicator for temperature changes.

tinkerforge call segment-display-4x7-v2-bricklet <uid> reset¶

Output:	no output

Calling this function will reset the Bricklet. All configurations will be lost.

After a reset you have to create new device objects, calling functions on the existing ones will result in undefined behavior!

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-identity¶

Output:

uid – Type: String, Length: up to 8 connected-uid – Type: String, Length: up to 8 position – Type: Char, Range: [a to h, z] hardware-version – Type: Int Array, Length: 3 0: major – Type: Int, Range: [0 to 255] 1: minor – Type: Int, Range: [0 to 255] 2: revision – Type: Int, Range: [0 to 255] firmware-version – Type: Int Array, Length: 3 0: major – Type: Int, Range: [0 to 255] 1: minor – Type: Int, Range: [0 to 255] 2: revision – Type: Int, Range: [0 to 255] device-identifier – Type: Int, Range: [0 to 216 - 1]

Returns the UID, the UID where the Bricklet is connected to, the position, the hardware and firmware version as well as the device identifier.

The position can be 'a', 'b', 'c', 'd', 'e', 'f', 'g' or 'h' (Bricklet Port). A Bricklet connected to an Isolator Bricklet is always at position 'z'.

The device identifier numbers can be found here. 

Callbacks¶

Callbacks can be used to receive time critical or recurring data from the device:

tinkerforge dispatch segment-display-4x7-v2-bricklet <uid> example

The available callbacks are described below.

tinkerforge dispatch segment-display-4x7-v2-bricklet <uid> counter-finished¶

Output:	no output

This callback is triggered when the counter (see start-counter) is finished.

Internal Functions¶

Internal functions are used for maintenance tasks such as flashing a new firmware of changing the UID of a Bricklet. These task should be performed using Brick Viewer instead of using the internal functions directly.

tinkerforge call segment-display-4x7-v2-bricklet <uid> set-bootloader-mode <mode>¶

Parameters:	<mode> – Type: Int, Range: See symbols
Output:	status – Type: Int, Range: See symbols

Sets the bootloader mode and returns the status after the requested mode change was instigated.

You can change from bootloader mode to firmware mode and vice versa. A change from bootloader mode to firmware mode will only take place if the entry function, device identifier and CRC are present and correct.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

The following symbols are available for this function:

For <mode>:

• bootloader-mode-bootloader = 0
• bootloader-mode-firmware = 1
• bootloader-mode-bootloader-wait-for-reboot = 2
• bootloader-mode-firmware-wait-for-reboot = 3
• bootloader-mode-firmware-wait-for-erase-and-reboot = 4

For status:

• bootloader-status-ok = 0
• bootloader-status-invalid-mode = 1
• bootloader-status-no-change = 2
• bootloader-status-entry-function-not-present = 3
• bootloader-status-device-identifier-incorrect = 4
• bootloader-status-crc-mismatch = 5

tinkerforge call segment-display-4x7-v2-bricklet <uid> get-bootloader-mode¶

Output:	mode – Type: Int, Range: See symbols

Returns the current bootloader mode, see set-bootloader-mode.

The following symbols are available for this function:

For mode:

• bootloader-mode-bootloader = 0
• bootloader-mode-firmware = 1
• bootloader-mode-bootloader-wait-for-reboot = 2
• bootloader-mode-firmware-wait-for-reboot = 3
• bootloader-mode-firmware-wait-for-erase-and-reboot = 4

tinkerforge call segment-display-4x7-v2-bricklet <uid> set-write-firmware-pointer <pointer>¶

Parameters:	<pointer> – Type: Int, Unit: 1 B, Range: [0 to 232 - 1]
Output:	no output

Sets the firmware pointer for write-firmware. The pointer has to be increased by chunks of size 64. The data is written to flash every 4 chunks (which equals to one page of size 256).

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

tinkerforge call segment-display-4x7-v2-bricklet <uid> write-firmware <data>¶

Parameters:	<data> – Type: Int Array, Length: 64, Range: [0 to 255]
Output:	status – Type: Int, Range: [0 to 255]

Writes 64 Bytes of firmware at the position as written by set-write-firmware-pointer before. The firmware is written to flash every 4 chunks.

You can only write firmware in bootloader mode.

This function is used by Brick Viewer during flashing. It should not be necessary to call it in a normal user program.

tinkerforge call segment-display-4x7-v2-bricklet <uid> write-uid <uid>¶

Parameters:	<uid> – Type: Int, Range: [0 to 232 - 1]
Output:	no output

Writes a new UID into flash. If you want to set a new UID you have to decode the Base58 encoded UID string into an integer first.

We recommend that you use Brick Viewer to change the UID.

tinkerforge call segment-display-4x7-v2-bricklet <uid> read-uid¶

Output:	uid – Type: Int, Range: [0 to 232 - 1]

Returns the current UID as an integer. Encode as Base58 to get the usual string version.