LCD-LINK OPTION Tennhal lnterf ate for COMM-LINKZ & HCS II Rev. LO CIRCUIT CELLAR INC. 4 Pak Street Vernon, CT 06066 TECHNICAL MANUAL
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LCD-LINK OPTION Tennhal lnterf ate for COMM-LINKZ & HCS II
Rev. LO
CIRCUIT CELLAR INC. 4 Pak Street Vernon, CT 06066
TECHNICAL MANUAL
LCD-LINK OPTION
Terminal Interface for COMM-LINK2 & H C S I I
Technical Manual
Release 1.0 4/6/92
Copyright (c) 1992 C i r c u i t Cellar Inc .
Circuit Cellar Inc . 4 Park St.
Vernon, CT 0 6 0 6 6
All r ights reserved
COMM-LINK, COMM-LINK2, PL-LINK, I R - L I N K , D I O - L I N K , LCD-LINK, ADIO-LINK, and HCS I1 are trademark and copyright (19921 of
C i r c u i t Cellar Inc . 4 Park St.
Vernon, Connecticut 06066
Corn-LINK, PL-LINK, IR-LINK, DIO-LINK, LCD-LINK, A D f O - L I N K , and HCS I1 are available f o r license from
C i r c u i t Cellar Inc. ( 2 0 3 ) 875-2751
While we have attempted to provide accurate and up to date information in this manual, CIRCUIT CELLAR INC. makes no representations or warranties respecting its contents. We reserve the right to make periodic changes to the t ex t and to issue new edi t ions of t h i s manual without notification.
Occasionally in t h i s manual we refer to the products of manufacturers other than ourselves. Such references do not constitute an endorsement of these products, but are included for the purpose of illustration or clarification. We do not intend such technical information and interface data to supersede information provided by the individual manufacturers.
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conditions of sale and Product Warranty -
CIRCUIT CELLAR, Inc. (CCI) and the Buyer agree to the following terms and conditions of Sale and Purchase:
1. CCI extends the following warranty: a factory manufactured circuit board or assembly carries w i t h it a one-year warranty covering both parts and labor. Any unit which is found to have a d e f e c t in materials or workmanship will, at the option of CCI, be repaired or replaced.
2 . A minimum inspection fee must be prepaid for the repair of units that are no longer under warranty. Con tac t CCI f o r information on c u r r e n t minimum charges.
3 . NO WARRANTY is extended on USER ASSEMBLED systems or kits. However, assembled kits will be inspected and repaired with charges based on the current minimum one hour charge. C C I r e t a i n s the right to refuse to repair any USER ASSEMBLED item. This right is at the sole discretion of C C I . However, in t h e event t h a t the repair charge would exceed a reasonable amount, t h e user may be consul ted f o r a determination. Repairs on user assembled items must be prepaid. Return authorization must be obtained prior to any r e t u r n .
4. C C I will not be responsible f o r the repair or replacement of any u n i t damaged by user modification, negligence, abuse and/or mishandling, or improper installation.
5 . CCI is not responsible to the Buyer f o r any loss or claim of special or consequential damages.
6 . All units re turned f o r repair must first receive prior authorization from CCI. A return authorization number may be obtained by phone or letter. Please retain a record of t h i s number, s i n c e most subsequent correspondence will refer to t h i s authorization. Under no circumstances should any product be returned to CCI without prior authorization. CCI will assume no responsibility for unauthorized returns. Returns must be shipped prepaid. Insurance is recommended as losses by a shipping carrier are not the responsibility of CCI. Repaired u n i t s will be returned postage and insurance pa id .
7 . CCI reserves t h e r ight to alter any feature or specification at any time. his r i g h t extends to fees, charges, and any other conditions or warranties contained herein.
REV* 3/92
Table of Contents
sect ion Description Page
Notices . Warranty Information
MICROCONTROLLER REVOLUTION
8031 FAMIEX P I N DESCRFtIPTIOM
EXTERNAL ADDRESS SPACE
DEVICE TYPE SELECTION ( J P ~ & J P ~ )
EXTERNAL CODE BELECTION (JP3) . RESETTING THE COMM-LINK2 (JP4)
POWJ3R FOR TEE COW-LINK2
C 0 U - L I N K 2 1 THE BASIC NETWORK NODE FOR
LCD-LINK CONNECTIONB LCD CONNECTIONS (53) HEARTBEAT ( J P 8 ) MODE ( J P 7 ) SCREW TERMINAL ENABLES (JP1) SCREW TERMINAL CONNECTIONS (10-23)
LCD-LINK S0FTWAR.E . 4
GETTING STARTED - LCD-LINK MONITOR CHECKSUMS LCD-LINK COMMAND SET NOTES
DEFAULT JUMPER CONFIGURATION
INTERACTIVE STANDALONE MODE •
LCD-LINK KIT INSTRUCTIOHB
LCD-LINK BCEEXATICB (OPTIOI) COMM-LINK2 SCHEMATICS (BASE BOARD)
LCD-LINK PARTS LIBT ( O W I O N ) COMM-LINK2 PARTS LIST (BASE BOARD)
THE HCB 11 8
LCD-LINK
MICROCONTROLLER REVOLUTION
'Expandable', the catch phrase of the 8O8s, is taking on new meaning in t h e 90 's . The ability to add functions to a small microcontroller through an expansion bus has been a h o t selling 'featurem fo r many companies. Today's cost-conscious product developer may not be willing to pay for that flexibility. Their product is well defined and must be minimal in cost. Expansion capabilities require additional parts, real estate, and power that is wasted in many cases where expansion will not be used.
What many need is an 8031/8052 controller in a plain brown wrapper, t h a t is, optimized for these minimal-configuration applications.
The COMM-LINK2 board meets this criteria. Optimized both fo r single-use drop-in solutions as well as volume OEM applications, t h i s new mfcrocontroller is designed to be small and cost effective.
Measuring only 3 .5 by 5 . 2 inches, the COMM-LINK2 board conta ins an 8031 (or 80C52) processor, EPROM and RAM memory, 12-bi ts of parallel 0 and an RS/232-RS/485 serial port. A s i n g l e 5 V D C r e g u l a t e d supply is necessary for operation or this can be obtained from a 9-12 JDC unregulated input by the on-board linear regulator,
LCD-LINK
8031 FAMILY PIN DESCRIPTION
Port 0 p i n s 39-32 8-bit open drain bidirectional 1/0 (multiplexed low-order data/address
I Port 1 pins 1-8 8 - b i t quasi-bidirectional 1/0
Port 2 pins 21-28 8-bit quasi-bidirectional 110 (high-order address for ext . memory)
port 3 pins 10-17 8-bi t quasi-bidirectional I / O (secondary functions as follows:
I RXD/data Serial Channel's receiver TXD/data Serial Channel's transmitter * I N T O Interrupt O/counter gate 0 input *INTI Interrupt l/counter gate 1 input TO Counter 0 input T1 Counter 1 input *WR w r i t e for external data memory *RD read f o r external data memory
ALE pin 30
*PBEN p i n 2 9
*EA pin 3 1
Address latch enable
read f o r external program memory
t i e d to l og i c high for executing code masked w i t h i n the 8 x 5 ~ series processors with internal ROM or t i e d to logic low to disable internal ROM and fetches a l l i n s t r u c t i o n s from external program memory
EXTERNAL ADDRESSING SPACE
The COMM-LINK2 microcontroller can directly address 64K of external m e m o r y . That is, overlapped DATA/CODE memory, for an "anything goes here" space.
Combinations 32K RAMS and EPROMs are allowed on the COMM-LINK2 board. When using the 8031, your EPROM code starts execution at 000OH. When using the 80C52 (masked with BASIC i n the internal ROM), RAM muat be at OOOOH.
4/6/92 Page 2
LCD-LINK --
Two memory sockets are provided on the COMM-LINK2 board (U2 & u 3 ) . Each memory socket has a jumper used in selecting the type of address space assigned to the socket. JP1 selects t h e device type for U2 and JP2 selects the device type for U3. The selection made determines where the control lines are connected on the memory socket. RAM and EPROM devices require slightly different configurations. The follow- ing is an example of m e m o r y configuration when using an 8031.
RAM in U3 at 8000H - EPROM in U3 at 8000H
J P 2 shows RAM in U3 starting at address 8000H
RAM in U2 at OOOOH - EPROM in U2 at OOOOH
J P 1 shows EPROM in U2 starting at address OOOOH
LCD-LINK -
EXTERNAL CODE SELECTION
The 8031 microcontroller requires *EA (pin 31 on the microcontrol- ler) to be pulled down to a logic low level. This i n s t r u c t s th6 processor to start executing machine language code starting at address 0000H. T h e 8 0 5 2 is masked wi th BASIC and w i l l run internal cod( (BASIC interpreter) if *EA is pulled up to a logic high. Pulling *El l o w on an 8052 w i l l disable BASIC and execute code starting at 00001 ( s im i l a r to an 8032).
>External code @ OOOOH enable
JP3 shows the microcontroller enabled for external code execution
RESETTING THE COMM-LINK2
Reset of the COMM-LINK2 board occurs when a normally open push- button switch is attached to JP4 and momentarily pressed. A logic high is applied to the system RESET l i n e and held momentarily h i g h by an R/C circuit.
Short pins to RESET board (normally open switch)
Use JP4 for connecting a normally open push-button switch as an external system RESET
4/6/92 Page 4
LCD-LINK
The COMM-LINK2 contains a full-duplex serial channel. TTL-level ;@rial signals are converted to fl0-volt RS-232-compatible signals by 17, the MAX232 device. A 16-lead f l a t ribbon cable made with a DB-25 ~t one end (for connection to DTE terminal device) and a 16-pin plug for connection to JP2) will permit serial communication w i t h a dumb :erminal or computer,
pull-up
pull-up
GND
pull-up
15 J2 16
Ribbon Cable 15 16 2x8 square p i n header
Cable required for RS-232 oommuniaations
To eliminate unwanted noise on the RX input to the processor, remove the unused line driver chip, (U7-MAX232 or U8-75176)
7/ u/ 2 Y
Page 5
LCD-LINK
RS-485 communications over a single twisted p a i r can includ~ multiple (up to 3 2 ) devices. Since each device can transmit and receive, certain protocols must be adhered to to prevent message collision. The simplest being " l i s t e n to the l i n e and transmit only if freem. (The protocol you use will depend on the application and is beyond the scope of this manual,) JP5 enables termination resistors on the twisted pair and should be installed only on the microcontrol- lers located at t h e extreme ends of the twisted p a i r (one at each end). U8, the 75176 RS-485 device, draws as much current as the rest of the COMM-LINK2 board. If you don't require RS485 communications removing U8 will reduce overall power requirements.
pull-down enable
pull-up enable
(m 100-ohm load ternination
1 JP5
JP5 shows termination of the RS-485 lines enabled
The LOO ohm termination which is across the RS485 twisted pair may be needed on the node at the end of the twisted pair daisy chain. The pull-up and pull-down resistors may be required to assure that the twisted pair is coaxed to the idle state when no RS485 driver is active. It is suggested that any termination be done on the l a s t node for 1 ess confusion.
4/6/92 Page 6
LCD-LINK
RS485/POUER CONNECTIONB
Four screw-terminal connections are used for connecting power and the RS485 network to the COMM-LINK2 board. This allows the COMM-LINK2 board to operate remotely with only a four w i r e cable (i.e. telephone cable). Of course you could use the COMM-LINK2 board as a stand-alone controller w i t h RS232 as the communications medium.
T1 is a two position s c r e w terminal block used f o r RS-485 twisted- pair communications. T2 is used as the power supply input, requiring either 9-12 volts of unregulated DC from a remote supply on a second pair of w i r e s or a local 5 VDC regulated supply ( w i t h the zero ohm jumper at R15 installed).
GND POWER
+v
Screw terminal blocks for Power and RS485 communication
4/6/92 Page 7
- LCD-LINK -
POWER for t h e COMM-LINK2
U s e T2 f o r attaching the power supply connections to the COMM- LINK2 board. The input can be any unregulated DC voltage from 9-12 volts. A series diode protects the COMM-LINK2 board from accidental voltage reversals. The unregulated DC powers a linear voltage regulator on the COMM-LINK2 board which provides the nominal 5 . 0 volts,
Alternately, a regulated 5 . 0 volts can be used as input. When the input is a regulated 5.0 vol ts , the user must install a zero ohm jumper at R15. T h i s bypasses the l inear regulator and series diode. t i i p p
To eliminate unwanted noise on the RX input to the processor, remove the unused line driver chip. (U7 or U8)
COMM-LINK, THE BASIC NETWORK NODE FOR THE HCB 11
The HCS 1 is an expandable, network-based, intelligent-node, industrial-oriented supervisory control system which, in its minimal configuration, performs quite suitably as a home control system. HCS 11 incorporates direct d i g i t a l inputs and outputs, direct analog inputs and outputs, real time or boolean decision event triggering, X-10 transmission or reception, infrared remote control transmission and reception, remote displays as well as a master console, and it has the capability to perform as a complete badge monitoring and personnel tracking system.
The HCS I1 system architecture cons i s t s of a central supervisory controller connected to up to 31 other functional modules (called links) via an RS-485 serial network. The system controller and the links can operate independently and do not need the system controller or other l i n k s to function. This allows easy testing or incorporation as intelligent subsystems in other cont ro l equipment. The subsystem links all share a common 8031 controller board (generically called a COMM-LINK) w i t h the 1/0 customized for each application.
The supervisory controller is quite literally the brains of the system. While every Link has its own processor, they each re ly upon the supervisory controller for timing, control commands, and overall system coordination.
The supervisory controller is a 9.218 MHz 64180-based s ing le board computer, It has two serial ports, up to 96K bytes of memory (32K bytes are battery-backed), an eight channel 8-bit or 10-bit A / D , a real time clock-calendar, and 24-bits of parallel I / O (an additional 48-bits of parallel I/o can be added if required). These parallel I / O bits can be further conditioned by externally connecting them to optoisolators, relays, or drivers. Depending upon your application you may find that the supervisory controller is all you need.
4/6/92 Page 8
LCD-LINK
One of the serial ports performs as a dedicated 9600 bps serial RS-485 connection to the various network l i n k s . The w i r e from t h i s port can be up to 4000 feet long (as opposed to 5 0 feet for RS-232). The second port connects (RS-232) to a PC/AT which functions as the master console. Programs running on the master console allow the user to e n t e r and store control sequences which will be subsequently compiled and downloaded to the supervisory controller's non-volatile memory. T h e master console also acts as an on-line real time display of all control activity in the system. When these downloading or display functions are not required, the master console can be turned off to reduce system power consumption.
Bes ides the Supervisory Controller, the HCS I1 system consists of a multitude (none to 31) of specialized-function network nodes which facilitate remote data acquisition, closed-loop control, and display. With the exception of the ADIO-LINK, all comm-links consist of the same generic 8031 computer with only the external parallel 1/0 circuitry and operating software being different. The generic COMM- LINK board is configured with minimal components. It accommodates up to 64K bytes of either RAM and/or EPROM m e m o r y . The single serial port is configured to operate both RS-232 and RS-485. When connected to the Supervisory Controller in normal operation, the connection is via a twisted pair to the RS-485. Additional line balancing and termination resistors are included. According to the driver chip manufacturers, this line can be 4000 feet long. In normal operation only RS-485 is used and the MAX232 (U7) can be removed to reduce power.
The available 1/0 on the corn-link circuit is l imi ted to the PORT1 b i t s of the processor, interrupt lines, and TO and TI. When used as a powerline interface, these l i n e s connect to the TW-523 X-10 module; when used as an infrared gateway, these lines connect to infrared I Z D 5river logic and an IR receiver; when used as an LCD display, these lines supply character data to the LCD. In addition, to facilitate additional link designs or modifications to the existing c i r c u i t s , the corn-link PC boards conta in a prototyping area.
The RS-232 is reserved for local non-system direct testing or use (of course, you could also operate it stand-alone with RS-485). Each link has a unique command set and, for multiple units of the same type, a unique address. By connecting the link to the serial port of a terminal or any PC running a terminal emulation program, you can iirectly command the corn-link to do any act iv i ty which it would lormally do for the Supervisory Controller.
With the PL-LINK alone, for example, you could directly control 111 X-10 on/off, dim/bright functions from a PC. In addition, because :he PE-LINK is nsmartab it offers the user the added capability to 'listenn to the power line and record whether any other X-10 codes lave been transmitted (either manually or automatically, from this or my other transmitter) , and it w i l l automatically "refresh" desired (-10 modules at a prescribed refresh rate. Intelligent links simplify :esting and problem diagnosis. More often than not, the location where zensors are placed have no convenient AC power outlet and 5 v o l t s is lo longer 5 volts if run over any length of a twisted pair. To remedy :his , the individual network links will operate on a 9-12 VDC input.
4/6/92 Page 9
L C D - L I N K
While the corn-link circuitry runs on 5 volts, the design incorpo- rates a linear regulator so that the 5V can be derived from a wide- ranging DC input. The intention is to promote connecting the individ- ual links via a 4-wire cable, rather than j u s t a 2 - w i r e twisted pair, when local power is unavailable. Two w i r e s supply RS-485 while the other pair supplies +12V and ground (actually 9-12V is f i n e . Higher voltages require a larger heatsink on the regulator). Of course, using the regulator is optional, and the board can be operated (jumper selectable) on +5V.
LCD CONNECTIONS
The LCD-LINK converses w i t h a 4 line by 2 0 character K D through J3. Your HCSLCD/4 comes complete w i t h a 34-pin ribbon cable and should be connected to the K D - L I N K as shown here.
ribbon cable connector overhangs 1x14 53 ------- 1 I ribbon cable connector I
'I' ribbon cableg s pin1 stripe-----J
The LCD must be a Hitachi U044L, a Vikay VK2420-ST, an Epson EA-DZ004OAR-S, or other compatible 4x20 character display. Use potentiometer PI to adjust the contrast of the LCD. Start with the pot rotated f u l l y clockwise, before powering up the board. After the power is applied, slowly turn P1 counterclockwise, until the display becomes visible.
A shorting jumper on JP8 pins 1 & 2 will enable the heartbeat LED and assure you that the software is running.
JP8 shown enabling the heartbeat LED
4/6/92 Page 10
Interactive mode is enabled through JP7 pins 9 6 10. When a shorting jumper is placed on these pins (and the board is reset) the LED-LINK e n t e r s the interactive mode. Remove this jumper for the E D - L I N K to be used on the HCSII network.
JP7 shown enabling the interactive mode
To use the s c r e w terminals for inputs 5-8 , place shorting jumpers In Jl pins 1 & 2 , 3 & 4 , 5 & 6 , and 7 6 8 . his will connect ;ED/input8 (P1.7) to screw terminal 13, input7/outputA (P1.6) to screw ;erminal 12, input6/outputB (P1.5) to s c r e w terminal 11, and input5/outputC to screw terminal 10.
JP1 shown enabling the scew terminal blocks for I / O
screw terminal blocks
USER CONNECTIONS TO SCREW TERMINAL 10-13
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LCD-LINK
LCD-LINK SOFTWARE
Setup your board as suggested for an 8031 based system, w i t h the LCD-LINK EPROM in U2 and a RAM in Us. Upon power-up or reset, LED3 will blink about once a second. This gives you a bit of reassurance right away that the system is operating correctly.
If the LED is not blinking, here are some things to check:
1. Shorting jumper positions 2 . RAM and EPROM positions 3 . Power Supply connections 4 . 5 volts on U1 pin 4 0 to ground (pin 2 0 ) 5. Reset U1 p i n 9 low 6 . ALE U1 p i n 3 0 oscillating (about 2MWz)
B i t usaqe for the LCD-LINK Monitor
L E D / I 8 heartbeat at 1 Hz and input b i t 8 I7/OA input bit7 or output A I6/OB input b i t 6 or output B I 5 / O C input bit5 or output C or BELL pulse LCD4 LCD data bus LCD3 LCD data bus LCD2 L C D data bus LCD1 LCD data bus
P3.3 INTl LCD enable P3.2 INTO L C D R/-W select P3.5 T1 LCD Data/-Register select P3.4 T O controls RS-485 driver (LED ON = disabled)
LCD connections: 1 Ground 2 +S VDC 3 Display contrast (if necessary else, grounded) 4 Data/-Register select (P3.5) 5 R/-W select (P3.2) 6 Enable (P3.3) 11 LCD data bus (PI. 0 ) 12 LCD data bus (Pl. 1) 13 LCD data bus (P1.2) 14 LCD data bus (PI. 3)
4/6/92 Page 12
-- LCD-LINK --
For R6232 Use (Nl-network mode default):
1. Setcommunicationsto 9600 b/s 8N1. 2. Remove 75176 transceiver chip , install W - 2 3 2 - 3. Connect PC to RS-232 header as usual. 4 . Verify commands to s a t i s f y yourself that it w o r k s , . .
Prefix all commands with n! TERMO (note spaces!) TERMO is the default address, to change, use the A command There is no conunand echo in this mode
If you have trouble, insert shorting jumper JP7 pins 9 & 10 and reset the CPU ta enter "interactive*' mode (NO-interactive mode):
A Descriptive banner appears. Do not use the prefix with the commands in the interactive mode.
Par Network U s e fN1-network mode default):
1. Set Communications is 9600 b/s 8N1. 2 . Insta l l 75176 trancsiver, remove MAX-232, 3. Connect PC through RS-485 converter.
Your software must enable/disable RTS correctly! Make sure P1.4 (JP7 pins 9 t 10 have no jumper) is not grounded when you turn power ON.
Network mode transmissions can be validated by using a checksumed transmission. The prefix indicates a non-checksumed command, lrhile a n # n prefix includes a checksum. The command and response syntax is as follows:
Bxx addr command $xx addr rhere : where:
# prefix w/checksums $ xx checksum byte in hex xx blank ASCII 32 ( 2 0 HEX) blank addr nodesi network addr addr blank A S C I I 32 ( 2 0 HEX) blank command command t e x t response <ca> ASCII 13 ( O D H E X ) <CR>
response
prefix w/checksums checksum byte in hex ASCII 32 ( 2 0 HEX) nodesls network addr ASCII 32 ( 2 0 HEX) response text A S C I I 13 (OD HEX)
Compute the cheeksums as follows:
1. Assemble the command w/wOOn (30 HEX 30 HEX) for the checksum 2 . Add up a l l the characters in the command including checksum 3. Find the 2's complement of the total's lower byte 4. Convert this into A S C I I characters and replace the checksum
Verify the checksum as follows:
1. Remove the commandos checksum and replace W / ~ O O ~ ~ 2 . Conve* the checksum characters t o a binary byte 3. Add up a11 the characters including the replaced checksum 4. Add the original checksum's binary byte 5 . If the lower byte = zero then it verifies correctly
4/6/92 Page 13
LCD-LINK -
string S e t network address to s t r i n g (16 characters m a x ) D Dump program status (debugging use) E Show and clear error f lags (debugging use) Ln Set logging mode (bit mapped)
L report current mode LO disable (default) L1 show ANSI decoding sequence L2 show LCD command processing
rJn Set network/interactive mode N report current mode NO s e t interactive mode N1 network mode (no error messages) (default) N2 network mode with command echo and error msgs N4 same as Nl with command echo and error msgs
0x=n Set output bit x to state n (O=l, OB=O) Bits are normally high af ter reset
Q Query buttons pressed since las t Q Buttons are bit-mapped i n HEX byte Current hardware returns buttons 8 0 , 4 0 , 20, and 10 only
REBET perform power-on reset, must be completely spelled out S=string Send string to LCD via ANSI decoder
(string continues to end of line)
NOTES
The Ox=n command controls output pins P1.4-6. The b i t s are normally high after a hardware or software reset. Issuing OA=O sets P1.5 U W , OA=l sets it high. Because 8031 CPU bits have very weak pullups, you should probably use drivers with active low inputs.
Because pins Pl.4-6 can be used as both button inputs and bit outputs, the firmware samples and stores the output state, sets the output high, reads the input value, and restores the output state. The sampling occurs 200 times per second and results in a narrow pulses on the output because low outputs glitch high and high outputs glitch low. Output devices that respond to narrow pulses may false- trigger on the glitches. If t h i s is a problem, an RC low-pass filter before the output driver should eliminate the glitches.
pin P1.4 has four functions, If t h e : pin is grounded during RESET or power-on the firmware comes up in interactive mode and does not use the standard network headers. The pin is both a switch input (for t h e Q command) and an output pin (for the 0 command), and the firmware can distinguish the two as described above. Finally, PI. 4 goes low for 500 ms when the firmware decodes the \b character sequence in an S command, as described below.
- 4/6/92 Page 14
LCD-LINK
The S command interprets several C-style escape sequences to gimplify enter ing "unprintableM characters that control LCD format- :ing. All sequences start with a backslash (ASCII 5 C ) .. .
\b Be11 (pulses P1.4 low for 0 . 5 sec) \cn Control character n (\cZ = Ctrl-2) \e Escape character, ASCII 27 \ f Form f eed character, ASCII 12 \n New line (linefeed and carriage return) \r Carriage return (to current l i n e , leftmost column) \t Tab to next stop: column 4 , 8 , 12, 16, 20 \xnn Send hex char nn directly to L C D panel Must have two d i g i t s /\ Single backslash
A backslash followed by any other character simply displays that :haracter, so the backslash vanishes.
The \x sequence is intended to display any character in t h e LCD :ontroller s character set including those above Ox7F. The firmware lisplays a blank and then overwrites it with the \ x character, so do tot put a \x character in the l a s t column of the last o w . Although ,x provides access to the LCDfs programmable characters ( \xOO through ,x07), the firmware does not initialize those characters and they lisplay as random junk.
The \c sequence is a different way to generate con t ro l characters .hat might otherwise use \ x . For example, \xOl and \cA are equiva- ent. Only the low-order five b i t s of the character are used, so \cA .nd \ca are equivalent.
The \b sequence simulates the BELL character by pulsing P1.4 low or about 5 0 0 ms. You may use t h i s to control a piezo buzzer to ttract attention to the display, but remember the very limited 8031 utput drive capability. This is t h e only way to activate the output, s Ctrl-G (\x07 or \cG) is rautad d i r e c t l y to t h e LCD panel . If P1.4 s also used as a switch input, t h e buzzer will sound whenever the witch is c losed, but t h e firmware can t e l l the difference between a ow output and a low input.
ANSI Control Sequences
All control sequences begin with t w o common characters: ESC - ANSI 2 7 , the Escape character (use /e) I - ANSI 91, the left square bracket
There are no blanks within the command strings.
Numeric parameters are decimal and default to 1 if omitted.
Row and column numbers start w i t h 1.
The upper/lower case of the trailing letter is important!
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- LCD-LINK -
Command Example Functior
ESC[#A ESC[#B ESC[#C ESC [ #D
Cursor up # rows (up 2 ) Cursor down # rows (down 1) Cursor right # columns (right 10) Cursor left # columns (left 5)
ESC(2A ESC[B ESC[lOC ESC [ 5D
S e t c u r s o r to row;column (to 1,l) S e t cursor to row;column (to 1,2) S e t cursor to rdw;column (to 3 , l )
ESC[S ESC [U
Save current c u r s o r location (1 level) Restore saved cursor locat ion
Clear display and home cu r so r Clear from cursor to end of r o w
ESC [ 2 J ESCIK
ESC [ 2J ESC[K
ESC [ 6n ESC[#;#R
ESC [ 6n ESC[3;4R
Query current cursor location Terminal's response to location query
(cursor at r o w 3 , col 4 = ESC[3;4R)
ESC [ #h Set display mode (ESC17h to wrap at end of rows)
S e t display mode (that's an "ellH) (ESCI71 to force cr/lf at end of r o w )
Set display attributes (ignored)
Reassign key code (ignored)
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LCD-LINK
Default Jumper Configurations for the LCD-LINK
4/6/92 ' Page 17
LCD-LINK
INTERACTIVE STANDALONE MODE
NOTE: THESE COMMANDS ARE INCLUDED IN THE LCD-LINK FIRMWARE FOR THE HCS 11. THE RS-232 INTERACTIVE FIRMWARE DOES NOT INCLUDE THE NETWORK COMMANDS. R e f e r to the source code listing for an explanation of the undocumented status values. U s e d f o r code debuging o n l y .
Ground P1.4 (shorting jumper on JP7-pins 9 and 10, or close external switch on screw terminal block 10), reset the LCD-LINK, and follow the directions for RS232 Use, under the section "GETTING STARTED - LCD-LINK MONITOR"
Upon RESET you should see a sign-on banner similar to:
X D - L i n k Networked LCD Terminal, Version 1.0a Copyright 1992 Circuit Cellar, Inc.
TERMO >
Enter the letter A to display the network 'Addressm
TERMO >A N e t address is TERM0
Change the address to any character s tr ing (16 characters max)
(TERMO through TERM7 are the only addresses allowable for network use) A d d r e s _ s q q c-
TERMO >A=TERMl
TERM1 >A Net address is T E N 1
Enter a ID' to Dump the program status
TERM1 >D Net address [TERM1 3 . Stack used 4E/7P.
Enter an ' E t to show and clear the E r r o r f l a g s
T E M l >E Error flags 0 0 . Checksum errors 0
Enter an 'Lx' to change the logging mode L reports the current mode LO disables logging L1 shows ANSI decoding sequence L2 shows LCD command processing
Now a display string w i l l show logging
4/6/92 Page 18
LCD-LINK --
---ANSI char is 4 8 [HI, sta te 1 ---ANSI char is 4 5 [El, state 1 - - - M B I char is 4C [L], sta te 1 ---ANSI char is 4C [L], sta te 1 ---AN81 char is 4F L O ] , state 1 ---ANSI char is OA [ - I , state 1
:hange logging modes
TERM1 >s=HELLO\n W D 4 8 [El LCD 4 5 [El LCD 4C [L] LCD 4C [L] LCD IF [O j LCD OA 1-1 ---LCD t o 12 01, cmd=94
Jow turn the logging back off
Znter an 'Nq to display the current N e t mode
T E m 1 >bt N e t mode is o
Iere an escape command returns w i t h cursor positioning
h e 3 , column 1
rutput bits ' A ' and 'Bi can be independently set to reset (Upon RESET both bits are set [logic 11)
inter a 'Q1 to display t h e status of the four input bits (high nibble)
'his shows the jumper on JP7 (or switch 10) was shorted to default into the interactive mode, now, that bit has not changed so it is cleared for the next query,
ee. It hasn't changed since the last Query.
4/6/92 Page 19
LCD-LINK
Generic Instructions for K i t A s s e m b l y
Tools Required for Assembly:
Low wattage or Temperature Controlled Soldering Iron Rosin C o r e Solder Lead Cutters
Additional Tools to Ease the Assembly:
Needle-Nose P l i e r s -ad Bender So lvent for removing ~ o s i n ( f lux) Screwdriver
Tools for trouble-shooting (and their use):
Oscilloscope L o g i c Probe Continuity Checker Volt/Ohm Meter
Viewing AC/DC s ignals ~ndicating L o g i c Levels (activity) Determining Shorted or Open Traces Checking Power Supply, Logic
Levels , or continuity
Fami l iar ize yourself with all of the parts included in t h e k i t . Pay particular attention to proper orientation of parts. Markings might include a bump, hole, number, arrow, or notch indicating pin1 (or the pin1 end) of I C s and sockets. A str ipe may indicate a plus or minus potential lead of a capacitor or the cathode of a diode. An LED might indicate the cathode by a notch or f la t side on the girth of the component.
Inspect the PC Board prior to installing any parts. If held up to a lamp, you can usually see the signal traces fa i r ly clearly. Eye each trace for defects, a copper short between adjacent traces or pads, or a break in the copper trace. Verify any traces that look shorted by first looking at the schematic to verify they should not be connected and then checking the traces for continuity. You should check traces which seem to be broken for continuity as well. Circu i t Cellar Inc. inspects each and every board for manufacturing defects; w e feel confident that the components packaged for you are free from defects. However, inspecting your PCB is much easier before any parts are inserted which would obscure a defect from view.
This is a generic overview of the construction process.
4/6/92 Page 2 0
LCD-LINK
The best approach to use in building a kit is to choose the smallest (or shortest) parts to install first. Start with any small signal diodes. U s e the FOIBSAT method on each part or group of p a r t s . Find, Orient, Insert, Bend, Solder, And Trim each part. Find the part, verify it using the parts list and silkcreen layout. O r i e n t the part correctly using markings on the part and the silkscreen layout. Insert the part into its designated location, forming the component leads i f necessary. Bend over the component leads to prevent the part from falling out, preferably i n the direction of the connecting circuit board trace, Solder each lead filling in the area between t h e l e a d and its plated through hole. And finally, Trim the leads to prevent shorting between traces, components, or holes.
Continue w i t h the 1/4 w a t t resistors, I C sockets, and smaller monolithic capacitors, Next, insert all the square p i n headers and jumpers. These canqt be easily bent and will simply fall out if not handled one at a time. start by soldering only one or t w o pins, flipping over the board to check that the header isn't tilted, then fix by reheating the soldered pin and/or complete by soldering the rest of the header's pins. Follow up w i t h the '
larger components, resistors, capacitors, and axial semiconductors.
Finally, the taller, odd-shaped components are added, transistors, L E D s , crystals, potentiometers, connectors, neatsinks, etc.
Now it's time to add those items l i s t e d in the K i t Specific Instructions, This is where you may be given special instructions on placement or a choice on how components are ~ r i e n t e d according to your application.
Prior to installing the I C s , it is a good idea to give the ?CB another inspection. Look for unsoldered or untrimmed leads. :leaning the solder side of the PCB w i t h a flux remover will make inspection easier, not to mention less s t i c k y .
Another suggestion is to use a volt-ohm meter and measure the resistance between ground and any power supply input. A short :ircuit here could r u i n your power supply and won't allow your loard to operate properly. Power-up the board before inserting :he I C s and check for voltage according to POWER TABLE listed in :he schematics,
Refer to the parts list and s i lkscreen for proper IC mientation and insert ion. This concludes the assembly instruc- :ions. Refer to the SOFTWARE - GETTING STARTED section of the ~anual for operation of the board.
4/6/92 Page 21
LCD-LINK
m I m I 0 w I
COMM-LINK2 SCHEMATICS (1 of 2)
4/6/92 Page 23
b.
In- A .
U B
Silkscreen for the XD-LINK
4/6/42
Page 25
- - LCD-LINK
PARTS L I S T for the LCD-LINK option
DESIGNATION PART # DESCRIPTION -----------_------_--------------------.-.------------------------------
Printed C i r c u i t Board COMM-LINK2 board assembly
Intesrated C i r c u i t s U13 7406
Resistors R18 330fl
Semiconductors LED3 TPL2ZO
Sockets S K I 3 14-Pin
HEX OC/Inverter
Visible L E D
Square-Pin Header Square-Pin Header Square-Pin Header Square-Pin Header Screw Terminal Blocks
0.3 inch TC-Socket
Potentiometer Shorting Jumpers
LCD-LINK -
PARTS LIST for the COMM-LINK2
IES IGNATION PART# DESCRIPTION __ -------+--------------------------------------
J r i n t e d C i r c u i t Board 'CB1 COMM-LINK2 P C Board
Inteqrated C i r c u i t s I1 8031 Microcontroller 12, U3 8 or 32K RAM/ E PROM '4 74LS373 Octal Latch '6 7 4 L S O O Quad 2-Input NAND 7 MAX2 3 2 Dual Transmitter/Receiver 8 75176 Differential Transmitter/Receiver
esistors I, R3-R5 10K 2 4.7K 6 l o o n 7 & R8 1K
1/4W, 5% (brn-blk-org) 1/4W, 5% (yel-vio-red) 1/2W, 5% (brn-blk-brn) 1/4W, 5% (brn-blk-red)
Tantalum
Monolithic Electrolytic Monolithic
4/6/92 Page 2 7
- - -- LCD-LINK -
PARTS L I S T for the COMM-LINK (continued)
DESIGNATION PART# DESCRIPTION --f--l-L-------I-_L_____I----------4-d-----------d--------------------------
Semiconductors -
Connectors
Small Signal Diode Diode 5.0 Volt L i n e a r Regulator
Square-Pin Header Square-Pin Header
JP3, J P 4 , 1x2 Square-Pin Header-
Sockets SKI 40-Pin SK2 & S K 3 28-Pin S K4 20-Pin SK6 14-Pin S K 7 16-Pin SK8 8-Pin
0.6 inch Ic-Socket 0.6 inch fC-Socket 0.3 inch IC-Socket 0.3 inch IC-Socket 0.3 i nch IC-Socket 0.3 inch IC-Socket
Heat S i n k w/4-40 s c r e w and n u t
SJ1-SJ8 Shorting Jumpers TI, T2 1x2 Screw Terminal Block X I 11.059MHz Crystal
4/6 /92 Page 2 8
MICROMINT MERCHANDISE RETURN FORM
IN THE EVENT THAT YOU NEED TO RETURN AN [ E M TO US, PLEASE TAKE THE K)UOWINC STEPS:
I . Call Micromini and obtain an RMA number.
2. Complete the form below and return it with the merchandise. Include a c o p y of your original invoice,
3. Should you need a replacement item shipped immediately. contact a Micromint customer service rep. at (203) 871 *6170.
4. Ship the merchanbi~ (pre-paid) to the address below. Using the original packaging, safely repack with a l l original accessories included.
5. Before you ship, please consider this:
Iur data shows that 8O%of the products returned as -defective: before a call to our Tehnical Assistance Dept., are not. I f y w emmnter difficulties,
please call our Technical Assistance Department at (203) 871-61 70.
- - - - - - - - - - - - - - - -
M COMMfE THIS WRM AND REfllRN WITH THE MERCHANDISE AN0 A COPY OF THE ORtCf NAL INVOICE:
RMA*
Date Invoice P.0.- Daytime Phone
Customer * Account Name
Contact Name
METHOD OF PAYMENT:
Check a Charge a Company Purchase Order (please attach copy 1
Credit Card * Expirat ion Date
Signature of Cardholder Purchase Order *
ITEMIS) RETURNED REAS0 N ( S )
(Use additianal paper to be as axplkit as pwslble a g a r , muds) fcf return) + , . . ' i:. ' - t*
COFlOlTlOlYS OF SALE A N 0 PRODUCT WARRANrY %
nlcmint, Jm and t b Buyer agree to the following terms and mdif ions or this Sale and Purchase:
I . Micromint, Lw. extends the tollow ing warranty: a lactoy -manufactured cirw i t board or assembly carries with it a one-year warranty covering both parts and labor. Any unit WhFh 1s f o ~ d to have a In manufscturing c~ workmanship shall. o t the option of Hicrmnlnt. lnc.. be repalred w replaoed.
2. Prodwts distributed. but rot rnanufacturd by H i m i n t , Inc. c a q the lull original manufactum's warranty. usuaily so days. Such products irrclude. but are rot limited ta wwor supplies. sensors. I/O modules. HOSARTs. LCD displays. battery-backed RAH modules. and disk drives.
3. For repair of unlts which have expired t b l r warranty. a minimum Inspect icn tee must be prepaid. Cont4et Hicromint. Inc. for infwmation m cumnt minimum charger.
4. No W a m t y i s extetnw on user assembled systorns or kits. However. assembled kits will be inspected and mired with charges based on the wrrmt mlnimurn one hoor charge. H i m i n t . I= retalnr the right to refwe to mpair any user assembled item. This right i s at the sole discfetir of H i m i n t , Ire. How- ever. In the event that repair churgts m l d ex& a r e a s a b l e amount, the user may be comulted far a determlnatioh Repairs UI user assembled items must be prepaid. Return autlwrization must be &hi-d prior to any return.
5. M i m i n t , Inc. shall W - b respmsible lor repair or replacemnf of any units which kcsome defectire t W g h uoer Willcat(on mgllgerroe, abuse andtor mishsrdllng. or impmpr installatioh
b. Hiaomlnt . Ine. shalt mt be msmslble to the Buyer far any loss or claim of special Q r rxlnsequeotial damages.
7. All units returned Iw #pair must have prior au tWxat im Im H i m i n t , lnc. A mturn autlwizatim r*rmber mrxst k obtalned by phone or letter. Please mtsln a -4 ot t k retun authorization nvnber as mast rbssqmt cm~s- w i l t referenoe tho m m h r . W r no c l r w m s t a m is sny product to be returned to M I m i n t . Inc. withaft prior autC#rlzatfoh Hkmnint. I r e will asrum m rwporrrlbilltg Car r l n a u t M return. All retm must be shipped prepaid. Insurarrce is recxwnmended as losses b# a shipping CWFler are not the mspmdbllity or Hicmmint. Irrs. Repaired units w i l l be returned with postage paId.
I. Hlawnlnt. I=. n m r w s the right ta change m y faatwe or speellicatim at ahy time as well as the minimum charges and any other a d i t t o n w warranty cootaim herein
What action would you like us to take? (Repair w ~ e p l w item. Refundor credit your seawntl: ---
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I f not. please provide correct informat ion:
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To help us serve you better. use this space for your comments regarding Micromint's service, support. product quatlty, etc. Thank you.
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