ALCD (Advance LCD) SERIES

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1 ALCD (Advance LCD) SERIES INTRODUCTION ALCD is Serial LCD module controlled through Serial communication. Most of existing LCD adopts Parallel communication, which needs lots of control lines and complicated control. On the other hand, ALCD adopts Serial communication, which needs only one or two lines to transmit data and display it on LCD. In addition, ALCD allows users to use LCD with easy even they do not have comprehensive knowledge of LCD module. GENERAL DESCRIPTION Various sizes from 16x2 lines to 40x4 lines 3lines interface with PICBASIC and 4lines interface with Microcontroller (PC) Supporting 5V ~ 15V level of RS232 (works automatically in accordance with port selection) On-board RS232 driver and supporting eight kinds of baud rates Supporting Insert/overwrite mode, function keys such as direction, space, Enter, Del, Home, End and Back space. Backlight control by software. On-board 56 Bytes of Ring buffer High-speed control from Microcontroller/PC without delay Supporting Control codes for a number of functions such as positioning, cursor control, display clear and etc Providing program for emulating ALCD Various transmission mode ( General command set, ESC code set, Character transmission by Byte) Model Display Backlight ALCD-162-BL 16 BY 2 LED ALCD-164-BL 16 BY 4 LED ALCD-204-BL 20 BY 4 LED ALCD-402-BL 40 BY 2 LED ALCD-404-BL 40 BY 4 LED <Table-1> Model LAYOUT <Picture-1> ALCD Layout 1 COMFILE Technology

You can control ALCD through PICBUS of PICBASIC. Although it is possible to connect to Microcontroller chip, in the case, ALCD module cannot receive Read Code (0x88).

2 ALCD (Advanced LCD) SERIES BAUD RATE You can select eight kind of baud rate with DIP switch as the following table. Baud rate Setting value / DIP set <Table-2> Setting baud rate CONNECTOR 3PIN-CONNECTOR IS USED TO CONNECT WITH PICBASIC. You can control ALCD through PICBUS of PICBASIC. Although it is possible to connect to Microcontroller chip, in the case, ALCD module cannot receive Read Code (0x88). When it is used with PICBUS of PICBASIC, its baud rate must be set 19200BPS. It uses 5V level of RS232 and consists of RXD, V CC and GND. 4PIN-CONNECTOR IS USED TO CONNECT WITH MICROCONTROLLER/PC DIRECTLY. In this case, Microcontroller/PC should use MAX232 to match RS232 level. Around ±15V of RS232 signal can be used without conversion. ALCD has built-in RS232 driver called MAX232. This connector consists of TXD, RXD, VCC and GND. ALCD controller send READY CODE (0x88) through TXD every process of control code. Variable register adjust the brightness of LCD. Comfile Technology 2

3 ALCD (Advance LCD) SERIES CONTROL CODE CODE #1 (BASIC CODE) When a process completes, ALCD controller send Ready code, 0x88. It means that ALCD is ready to process incoming code. Control code Transmitted byte Operation A0 1 A1 X Y 3 A2 String 00 Free A A3 0C 2 Hide cursor A3 0E 2 A3 0A 2 Initialize ALCD (it takes around 50ms) Execute the following process in order - Display cursor - Stop cursor flickering - Locate cursor at (0,0) - Set Overwrite mode - Turn on Backlight Appoint location of display. (X is row and Y is column) Range of display is different according to ALCD model. Cursor is placed on the appointed location Output string 0x00 code next to string is NULL code indicating the end of string (similar as C language). Transmitted string will be outputted instantly. Even the code of CR LF is between strings, it will be handled automatically. ** If you handle string over buffer capacity, 56bytes, you must not use it in INSERT mode. (Because processing speed in INSERT mode is relatively slow, it could bring about Over-flow.) In the case, you must handle the string in OVERWRITE mode. Even when you handle character one by one just like key-input, you must send it in control code format. (Only when it receives code 0x00, the ALCD controller recognizes all process completed and sends code 0x88.) (ex) A2 Character 00 A2 String 00 When you output string less than 56bytes, you don t have to set delay even in working with Microcontroller which uses BPS. However, when you output string larger than 56nbytes, you have to set a little delay between byte transmissions so that ALCD controller can clear the content of buffer in outputting. If you use PICBASIC module, there is no limitation on transmission of string. (No need of delay) Clear ALCD screen Location of display is set (0,0). Show cursor ALCD default Stop blinking cursor ALCD default A3 0B 2 Blink cursor A4 CODE 8BYTE 10 Transmit/save user-defined bit map to/on CGRAM CODE is a call-number (1~8) for stored bit map. (If other code is used, error will occur.) 8BYTE is 5*8 of bit map having 8 bytes of length. The stored bit map can be called by its call-number. 3 COMFILE Technology

4 ALCD (Advanced LCD) SERIES Control code Transmitted byte Operation A Turn on backlight A Turn off backlight A A6 0D 2 A A A A A A A6 2E 2 A6 2D 2 A A7 01 HB LB 4 A7 02 HB LB 4 (ex) If you send control code as follow, When A2 String... CODE String The CODE will be displayed between strings. Same as Backspace key Available in only the line where cursor locates currently Same as Enter key CR LF code Same as End key Move cursor to end of line where cursor locates currently Same as Home key Move cursor to beginning of line where cursor locates currently Same as Left key Move cursor by on character to the left Same as Up key Move cursor by one line upward Same as Right key Move cursor by on character to the right Same as Down key Move cursor by on line downward Same as Del key Available in only the line where cursor locates currently Set INSERT mode Because there needs lots of time to process one character in INSERT mode, when you perform batch-outputting string, you have to work in OVERWRITE mode. This is useful when you handle characters in keyboard input method. Set OVERWRITE mode Default mode Recommended in batch-outputting string The processing speed is very high and you can handle a number of strings without need of delay and Overflow even at BPS. (In case of batch transmission not exceeding buffer capacity, 56 bytes) Display transmitted 16bit value just as in hexadecimal character on ALCD. Display on current cursor to the right HB : higher byte LB : lower byte Expressed in four digits unconditionally Empty space is filled with 0. Display transmitted 16bit value just as in decimal character on ALCD. Display on current cursor to the right HB : higher byte LB : lower byte Expressed in five digits unconditionally Empty space is filled with 0. Comfile Technology 4

5 ALCD (Advance LCD) SERIES CODE #2 (ESC EXTENSION CODE) The reason why ESC codes are needed is that it is hard to transmit value, 80h~FFh, through serial port in Basic language such as Visual Basic. Therefore, there is need of extended ESC control code so that all transmission value can be controlled by only limited value in range of 00h~7Fh. ESC has 27 as decimal number and has 1Bh as hexadecimal number. A means character A. When a process completes, ALCD controller send Ready code, 0x88. It means that ALCD is ready to process incoming code. Control code Transmitted byte Operation ESC A 2 Same as [A0] code ESC B X Y 4 Same as [A1 X Y] ESC C String 00 Free Same as [A2 String 00] ESC D 01 3 Same as [A3 01] ESC D 0C 3 Same as [A3 0C] ESC D 0E 3 Same as [A3 0E] ESC D 0A 3 Same as [A3 0A] ESC D 0B 3 Same as [A3 0B] ESC E CODE 8BYTE 11 Same as [A4 CODE 8BYTE] ESC F 01 3 Same as [A5 01] ESC F 02 3 Same as [A5 02] ESC G 08 3 Same as [A6 08] ESC G 0D 3 Same as [A6 0D] ESC G 23 3 Same as [A6 23] ESC G 24 3 Same as [A6 24] ESC G 25 3 Same as [A6 25] ESC G 26 3 Same as [A6 26] ESC G 27 3 Same as [A6 27] ESC G 28 3 Same as [A6 28] ESC G 2E 3 Same as [A6 2E] ESC G 2D 3 Same as [A6 2D] ESC G 00 3 Same as [A6 00] No related code to [A7 01 HB LB]. Because 00h~FFh are not available in Visual Basic Language, No related code to [A7 02 HB LB] Because 00h~FFh are not available in Visual Basic Language, CODE #3 (DIRECT OUTPUT BY BYTE) This function can display one character by Byte without control code. The range of character code is 20h~7Eh. Characters in ALCD may be different from that of Windows. When a process completes, ALCD controller doesn t send Ready code, 0x88 because that it doesn t process any control code). Transmission Transmitted byte Operation 1byte character code 1 Character related to transmitted code is displayed on cursor instantly. 5 COMFILE Technology

6 ALCD (Advanced LCD) SERIES CONNECTION CONNECTION TO PC CONNECTION TO PICBASIC CONNECTION TO MICROCONTROLLER Comfile Technology 6

You need a dedicated cable to connect ALCD module to PC.

7 ALCD (Advance LCD) SERIES EMULATOR INTRODUCTION This program allows users to test all ALCD functions with easy and simple. Moreover, it helps users to learn how to use the ALCD. You need a dedicated cable to connect ALCD module to PC. Before executing the test program, you should connect ALCD to PC with the dedicated cable, and open communication port. <Picture-2> LCD TESTER LCD SELECTION MENU 7 COMFILE Technology

ALCD (Advanced LCD) SERIES SETUP MENU This menu consists of Synchronization, Comport Setup and Port.

CONTROL MENU You can test all control code for ALCD in this menu. String output will output all characters on Emulator s screen to ALCD screen.

You can set Insert mode or Overwrite mode in the Mode menu. CONTROL MENU > FONT EDITOR You can make/store/output your own BITMAP in CGRAM. CODE uses 1~8.

8 ALCD (Advanced LCD) SERIES SETUP MENU This menu consists of Synchronization, Comport Setup and Port. Synchronization makes Emulator s screen same as ALCD module s screen including Key operation, cursor location, displayed character etc. CONTROL MENU You can test all control code for ALCD in this menu. String output will output all characters on Emulator s screen to ALCD screen. Two menu, LCD initialization and Clear LCD screen, take effect on both of two screens, Emulator and ALCD module when Synchronization is set. You can set Insert mode or Overwrite mode in the Mode menu. CONTROL MENU > FONT EDITOR You can make/store/output your own BITMAP in CGRAM. CODE uses 1~8. Clear button initializes current screen. The point where mouse clicks on turns black (it turns 1 logically, other points is 0.). Because it stores the BITMAP its internal space, there is no need of connection to ALCD to store BITMAP. Comfile Technology 8

Each button is exactly same as that of keyboard. Key operation may be different from that of PC editor due to characteristic of ALCD.

9 ALCD (Advance LCD) SERIES CONTROL MENU > CURSOR LOCATOR This menu executes control code for positioning cursor. With clicking Appointing location button after appointing location in the combo box, cursor will be on appointed location. CONTROL MENU > KEY PAD This menu executes control code for Key operation. Each button is exactly same as that of keyboard. Key operation may be different from that of PC editor due to characteristic of ALCD. You should make certain that Key Operation is adjusted in accordance with characteristic of ALCD. CONTROL MENU > VALUE This menu displays the value a user inputs by hexadecimal/decimal on ALCD screen. If you want to display it by hexadecimal, click Hexadecimal button. If you want to display it by decimal, click Decimal button. The transmitted data between Emulator and ALCD module are control code and 16bit value.(alcd controller processes switching its display format. DEDICATED CABLE Dedicated cable for connection between ALCD and PC is sold separately. 9 COMFILE Technology

10 ALCD (Advanced LCD) SERIES EXAMPLE SOURCE EX1) IN PICBASIC =================================================== Advanced LCD version test program =================================================== DIM I AS BYTE SET PICBUS HIGH HIGH is 19200, LOW is 4800 LCDINIT CSROFF BUSOUT &HA0 ' LCD initialization (including clear LCD screen) BUSOUT &HA1;&H00;&H00 ' Display location BUSOUT &HA2;&H30;&H00 ' Display string BUSOUT &HA3;&H01 ' Clear LCD screen BUSOUT &HA3;&H0C ' Hide cursor BUSOUT &HA3;&H0E ' Show cursor BUSOUT &HA3;&H0A ' Stop blinking cursor BUSOUT &HA3;&H0B ' Blink cursor BUSOUT &HA5;&H01 ' Turn on backlight BUSOUT &HA5;&H02 ' Turn off backlight BUSOUT &HA6;&H08 ' BACKSPACE key BUSOUT &HA6;&H0D ' ENTER key BUSOUT &HA6;&H23 ' END key BUSOUT &HA6;&H24 ' HOME key BUSOUT &HA6;&H25 ' LEFT key BUSOUT &HA6;&H26 ' UP key BUSOUT &HA6;&H27 ' RIGHT key BUSOUT &HA6;&H28 ' DOWN key BUSOUT &HA6;&H2E ' DEL key BUSOUT &HA6;&H2D ' Set INSERT mode BUSOUT &HA6;&H00 ' Set OVERWRITE mode BUSOUT &HA7;&H01;Higer;Lower ' Display transmitted 16bit value by hexadecimal number BUSOUT &HA7;&H02;Higher;Lower ' Display transmitted 16bit value by decimal number I = 255 LOCATE 0,0 PRINT "TEST ELCD " LOCATE 0,1 PRINT DEC(I,3,0) Comfile Technology 10

$h> #use delay(clock=4000000) #use rs232(baud=19200,xmit=pin_b0,rcv=pin_b1) void main() { delay_ms(200); // Delay time for initialization of LCD printf("%c%c",0xa3,0x1); // printf( %c,0xa0); ' LCD$

11 ALCD (Advance LCD) SERIES EX2) WITH MICROCONTROLLER IN C LANGUARE /* lcd test2 */ #include<16f876.h> #use delay(clock= ) #use rs232(baud=19200,xmit=pin_b0,rcv=pin_b1) void main() { delay_ms(200); // Delay time for initialization of LCD printf("%c%c",0xa3,0x1); // printf( %c,0xa0); ' LCD initialization (including clear LCD screen) // printf( %c%c%c,0xa1,0,0); ' Display location // printf( %c%c%c,0xa2,0x30,0); ' Display string // printf( %c%c,0xa3,0x01); ' Clear LCD screen // printf( %c%c,0xa3,0x0c); ' Hide cursor // printf( %c%c,0xa3,0x0e); ' Show cursor // printf( %c%c,0xa3,0x0a); ' Stop blinking cursor // printf( %c%c,0xa3,0x0b); ' Blink cursor // printf( %c%c,0xa5,0x01); ' Turn on backlight // printf( %c%c,0xa5,0x02); ' Turn on backlight // printf( %c%c,0xa6,0x08); ' BACKSPACE key // printf( %c%c,0xa6,0x0d); ' ENTER key // printf( %c%c,0xa6,0x23); ' END key // printf( %c%c,0xa6,0x24); ' HOME key // printf( %c%c,0xa6,0x25); ' LEFT key // printf( %c%c,0xa6,0x26); ' UP key // printf( %c%c,0xa6,0x27); ' RIGHT key // printf( %c%c,0xa6,0x28); ' DOWN key // printf( %c%c,0xa6,0x2e); ' DEL key // printf( %c%c,0xa6,0x2d); ' Set INSERT mode // printf( %c%c,0xa6,0); ' Set OVERWRITE mode // printf( %c%c,0xa7,0x01,higher,lower); ' Display transmitted 16bit value by hexadecimal number // printf( %c%c,0xa7,0x02,higher,lower); ' Display transmitted 16bit value by decimal number } while(1){ printf("%c%c%c",0xa1,0,0); printf("%ctest ALCD%c",0xa2,0); } 11 COMFILE Technology

12 ALCD (Advanced LCD) SERIES EX3) IN VISUAL BASIC Private Sub Command10_Click() ' ENTER key TX = Chr(27) + "G" + Chr(&HD) Private Sub Command11_Click() ' END KEY TX = Chr(27) + "G" + Chr(&H23) Private Sub Command12_Click() ' HOME KEY TX = Chr(27) + "G" + Chr(&H24) Private Sub Command13_Click() ' INSERT mode TX = Chr(27) + "G" + Chr(&H2D) Comfile Technology 12

13 ALCD (Advance LCD) SERIES Private Sub Command14_Click() ' DEL character TX = Chr(27) + "G" + Chr(&H2E) Private Sub Command15_Click() ' OVERWRITE mode TX = Chr(27) + "G" + Chr(0) Private Sub Command16_Click() ' Clear screen TX = Chr(27) + "D" + Chr(1) Private Sub Command17_Click() ' Hide cursor TX = Chr(27) + "D" + Chr(&HC) 13 COMFILE Technology

14 ALCD (Advanced LCD) SERIES Private Sub Command18_Click() ' Show cursor TX = Chr(27) + "D" + Chr(&HE) Private Sub Command19_Click() ' Blink ON TX = Chr(27) + "D" + Chr(&HB) Private Sub Command20_Click() ' Blink OFF TX = Chr(27) + "D" + Chr(&HA) Private Sub Command21_Click() ' Using user-defined area TX = Chr(27) + "E" + Chr(8) + Chr(0) + Chr(255) + Chr(0) + Chr(255) + Chr(0) + Chr(255) + Chr(0) + Chr(255) TX = Chr(27) + "C" + Chr(8) + Chr(0) Private Sub Command22_Click() ' Backlight ON TX = Chr(27) + "F" + Chr(1) Comfile Technology 14

15 ALCD (Advance LCD) SERIES Private Sub Command23_Click() ' Backlight OFF TX = Chr(27) + "F" + Chr(2) Private Sub Command3_Click() TX = Chr(27) + "A" + Chr(27) + "F" + Chr(1) + Chr(27) + "B" + Chr(0) + Chr(0) + Chr(27) + "C" + "ABCDEFG" + Chr(0) Private Sub Command4_Click() TX = Chr(27) + "D" + Chr(1) + Chr(27) + "F" + Chr(2) + Chr(27) + "G" + Chr(24) 15 COMFILE Technology

16 ALCD (Advanced LCD) SERIES Private Sub Command5_Click() TX = Chr(27) + "G" + Chr(&H26) Private Sub Command6_Click() TX = Chr(27) + "G" + Chr(&H28) Private Sub Command7_Click() TX = Chr(27) + "G" + Chr(&H25) Private Sub Command8_Click() TX = Chr(27) + "G" + Chr(&H27) Private Sub Command9_Click() ' BACKSPACE TX = Chr(27) + "G" + Chr(8) Comfile Technology 16

When JP1 is cut, baud rate is Otherwise, baud rate is Factory default is that JP1 is shorted. (JP1 is jumper type in some model)

When JP1 is cut, baud rate is Otherwise, baud rate is Factory default is that JP1 is shorted. (JP1 is jumper type in some model) ELCD SERIES INTRODUCTION ALCD is Serial LCD module which is controlled through Serial communication. Most of existing LCD adopts Parallel communication which needs lots of control lines and complicated