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Hi, I am new to all of this. I am a student.I have been trying to interface SIM808 with PIC18f4580.I tried to debug the code using PICkit3 debugger. I sent (ATE0) command to turn OFF echo mode after sending (AT) command. I am using LCD to display the response from SIM808. The problem is whatever I sent is getting back i.e., ECHO mode is n
Hi all, I am learning the custom LCD character which interface withIC 16f628a interface. My code is as below which i refer online. It works, but i am not understand some part of the code which i highlighted. Can anyone try to explain to me? // LCD module connections sbit LCD_RS at RA0_bit; // sbit declares LCD_RS at RA_0 address sbit
No. The command only positions the cursor, it doesn't print. But to refresh a specific a character, you'll set the cursor to the very position, not the begin of line. Then print exactly one character.
you should use set library_list = `ls $source_directory` see difference? I've used the character ` instead of '
You need to learn something about GSM alphabets. The default GSM 7-bit alphabet doesn't include the degree symbol. Transmitting SMS with a different alphabet is a bit tricky. You must select a different character set (e.g. UCS2) in the GSM header and also switch the modem interface to a different alphabet. To avoid conflicts with limited chars
You have to initiate and perform the LCD initialization and I do not see that in your code, though I admit I only took a quick look. You don't just sit and wait for it to initialize. I am assuming this character LCD is a standard HD44780-based one. If so, this
I want to delete single character while entering if it entered wrong in LCD, suggest me in this code how to do it. void wrcommand(unsigned char command) { cbi(PORTD,PD3); PORTC=command; sbi(PORTD,PD4); _delay_ms(10); cbi(PORTD,PD4); } void wrdata(unsigned char data) { sbi(PORTD,PD3); PORTC=data; sbi(PORTD,PD4);
Framework offers a method similar to the C strtok() routine, String.Split which can tokenize a string delimited by a specified character set. String.Split Method BigDog
Have u converted the Hex count into BCD before sending to LCD. The common mistake is on LCD ACII character displays only. So make sure after converting Hexadecimal number then Gate OR with 0x30. Then send your result to LCD.
Hey Please help me in figuring out the problem in this code. I am interfacing UART of PIC16F877A with PC, baud rate 9600, 4MHz fosc. In main.c, I am just sending a char array through a command function Uart_Write_text. Testing circuit on proteus 8.1, the virtual termainal do show something but they are random characters, not what I am sending. I
Hi guys, I have a strange problem with displaying text/characters on my blue backlit 2x16 LCD screen. The code is working correctly and if I look the screen with an angle, I can read it. However it cannot be read by looking the screen from above. Here I am attaching the photos of my problem: 102483102484
A 2x16 character display can be updated in less than 10 ms, using either 4- or 8-bit mode (if coded appropriately). For a periodical refresh, you'll probably want to use a timer or a flag set in a timer interrupt.
hello, how to print character in 2nd i am using 16x2 LCD... lcdcmd(0x80); // 1rst line // to set cursor at 2nd line 1rst caractere in X position lcdcmd(0xC0); to set cursor at other X position, add X value to 0xC0 ... lcdcmd(0xC8); // Y=2 x=8
There's no need to use an interrupt. The code has several errors, however. For the sender, you must not use ret, instead jmp back to the main loop. For the receiver, it will set the P3.1 for any received character and never reset it. The code runs into "nirwana", there must be jmp instruction before end. There might be more (...)
Could you please explain more how I can set the file name and how I should write the pwl file? (its format) The following is example. Lines which begin with non numeric character and blank lines are ignored. ; IS-95 Signal(1.2288Mcps) time (s) VT("/net47") (V) 0 0
You're probably telling it to display characters beyond the standard ASCII set and they all are being mapped to the "?" character.
you have set up interrupt for receiving. but you have not told it from when to start receiving. what i am saying is you you have not defined any start character. (or have you set any? tell us.) . what you can try is send enter command once. than try to send string. see what happens. also try to debug on hardware level. if you have any (...)
After while(!TRMT1); you have to clear TRMT1 using TRMT1 = 0; otherwise it transmits only one character. TRMT is a read only status bit. It can't be cleared. You should also clear RC1IF inside the while(!RC1IF) loop. RCIF is autocleared when reading RCREG. A possible problem of the code, beside the discussed inte
It can be simpler! You only have to set up the UART registers once so you can put the "enable_serial()" code at the beginning of main(), thereis no need to put it in a loop. You can also remove the delay in the "send_data()" routine as it does nothing except add to the delay between sending each character in the main program. Also note that you a
I'm using PIC-18f452 to serial transmit temperature value through the serial port . I need to display special character degree symbol to get at the Hyperterminal.. the display must be temp = 30 degree(in symbol) Celsius. please help this is my code.. int tem=30; char str; sprintf(str, " Ch1 Temp = %5d ", tem); SerTxS(str)
Your routine probably shows the content until it finds a null character so basically write the 8 characters that you want in positions 0-7 and set position 8 to null (array=0;).
Hi, This is first time, I am working with sim900. When I power on the module, I receive continuous null character in hyper terminal.I set baud rate 9600 in PC. I don't know what is the problem in that. give any advice regarding this .. thanks in advance.
Basically it looks OK although I do not have the same compiler to check it. I would note that you set the "uart_receive_flag" every time a character arrives, regardless of whether it caused an overrrun error or not. If the UART is not configured properly it may still receive data and you correctly reset it to clear the error but you still (...)
You usually set up the USART receiver with the correct (if known) baud rate, stop bits etc. as what the transmitter is using to transmit the data. Baud rate detection refers to the process by which a receiving device (such as a USART) determines the speed, code level, and stop bits of incoming data by examining the first character, usually a pre
Hi, I am working with Launch pad: MSPG2553 controller and CCS. I wrote the following program: UART: to send a character and just reply it back. /* * main.c */ #include "msp430g2553.h" void main(void) { WDTCTL = WDTPW + WDTHOLD; // Stop WDT BCSCTL1 = CALBC1_1MHZ; // set DCO DCOCTL
i am trying to do a 4 X 4 matrix led to display a character in proteus. But i am getting flickerence. I tried with delay of 100us to 2ms and more. But i am getting the flickerence continuously. Is there any option to set the led off time in proteus ? I am thinking that the led in proteus ckt have very less off time but in real led the off time
Hey I want to know how can I display characters on a VGA display using verilog. I need it to show score in a game I implemented using an altera MAX V CPLD.
U want using the complete ascii character set? In my pc <-> fpga communication (transmitting numbers only in both ways), I'm using a bin -> bcd converter, then i'm simply add 11000 (48 in decimal) to the bcd numbers. If u intrested, i can post the code. Btw, i do not recommend for you to use Windows in PC while u doing the developement. It can t
Is the VFD a module with controller chip on board? Do you have a part number? If it's a module, then there are a few basic methods of interface (asynchronous or synchronous serial, and 8-bit parallel) and then such things as character set and instruction set to consider. It can be done; the complexity depends mostly on whether the (...)
As you all know that UART FIFO is of 16 byte long.i want to know how can i send a character more than 16 bytes say 100 bytes continiously
Hi all, I'm using keilc51 complier and 20x4 lcd display. In lcd, there is a function set command(1110xx) for display two lines. I try for this but it did not display a character in two lines. Does anyone know the solution? Besides, I wanna to make a clock (as below link) to display on lcd but I only have an idea which is create a big size char
Hi all, I have recently purchased module SIM5218A and Development KIT for sim5210 and sim5218(EVB KIT) of SIMCOM.I used USB interface to configure UART port following steps. 1.AT+CSUART=0 (3 line mode) 2.AT+IPR=9600 (set baud rate) 3.AT+ICF=3,3 (set control character farming,data bit=8,stop bit=1,parity=none) 4.AT+IFC=0,0 (...)
i tried to move data inside ADRESL to PORTC in Proteus simulation, but the PORTC does not register any change when the ADRESL is change. The code is as below: BSF PORTB,0 ;R/S set TO '1' to write character clrf PORTC movf ADRESL,W ; Get ADRESL into W. movwf PORTC am i missing some steps in the code?
try with 9600 baud see if it is not the baud rate problem... try echoing the received char may be not receiving correctly because if it receive junk character it will go in continuous while loop... have you set the controller's clock frequency setting despite of having connected an oscillator..?
Dear friends , I am using t6963c controller based 240 * 128 pixel graphic lcd.I am able to scroll the the custom made big size(50 pixel height) character in horizontal mode. I am changing the graphics home address set command for scrolling .The thing is that after scrolling to 30 times the character again comes on screen from right. I (...)
Receive a string from the HyperTerminal char *Receive_MSG(char *String, unsigned short int MSG_Length) { unsigned short int Index = 0; // Message Index while(Index < MSG_Length) { String = Receive_Byte(); if(String != 13 && String != 10) { String = '\0'; // set the next character to NULL
does any one know how to set look up table for AScii to morse code...........using vhdl and fpga system or any idea abt this mini project "AN ascii to morse code genertor using vhdl and fpga system"................... here an PS2 keyboard is used to generate the asccii character and lcd display to display the ascii (...)
you set the serial port parameters to 8 bit no parity and your can then send a byte at a time - the is no real difference between characters and binary data except that printable characters are generally 7 bits unless you go to extended character sets - the characters are represented by (...)
If you have a inverted character set then it is as simple as ABC... means do a string reverse then map all the characters to inverted characters. Long back IIRC in 1988-89 I wrote a small program in "basica" without using graphic function to enlarge characters in text mode. I did it by reading each (...)
You can write the string in revere while you receive it, i assume you know the length of the string so instead of writing to the char array from 0 to 11 you can write from 11 to 0. You can also create a function the read the character in reverse and return the string as you want it. Alex
I do not have a CCS compiler but the code looks OK. The only things I would question are: 1. Do you have to set the TRIS bits for the RX and TX pins or does the "#use RS232" directive do that for you? 2. Does putc() automatically use the USART or do you need to tell it where the character stream is sent? I assume the compiler adds code to check
Just to be sure you are capturing every character sent to the printer, set your printer driver to send its output to a file (instead of printer) and cross check your file with the data captured by your device.
Places that I would look for character-set definitions listed in datasheets or manuals: - character-based LCD displays and chipsets. - old character-based video chips. - old dot-matrix printers. - old character-based computers and terminals. character (...)
Open the Hyperterminal, set the com port, the baudrate and the bits stop and start to transmit with the fpga. Hypertermial read the bits and display the Ascii character.
Have you set the character mode using "AT+CSCS='GSM'" and the Message Center number using "AT+CSCA='#########'"
The 'USART Receive Interrupt Flag bit' (RCIF) will be set when there is a character in the Receive FIFO to be read. This is bit 5 of the PIR register. This bit is cleared by the hardware when you read the character from the FIFO. What you should do in your code is test this bit, and if it is set read the (...)
i actually want to write a verilog code for character lcd interface.. in which i want to get the only function set for the value 000010 -( lcd_rs-0, lcd_rw-0,db7-0,db6-0,db5-1,db4-0) using a state machine.. either mealy or moore..
Hi, I need the lcd commands like function set,entry mode set , and to display the character in line1=80,line2=c0 like wise for line3 and line 4 if any have the sample program for 20*4 lcd r lcd commands,plz provide me.thanks in advance Regards Kanimozhi.M
FPGA is probably best way. You can generate arbitrary video signal and make some hardware acceration for graphics. Here is link to VGA controller, character generator and bouncing ball implemented in XILINX FPGA: and here Pong game example: Just for ins
Draw each character with polygons.