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101 Threads found on Serial 89c51
AT89S51 has in-circuit serial programming, not AT89c51.
Hi, I've completed my Vehicle tracker working with 89c51 + 89c52, where 51 controlled GPS data and its ping 10 keeps sending data to 52's MCU pin 2 and 52 MCU is serving main program including serial communication with siemens s-46 model. Now I've connected the SIM300DZ and SIM300D none of the working as per my code used for previously sieme
replace your metlab data in the above code.
(Have Project file below) Like tile, I have some problem with Circiut have max232 and 89c51, transfer data over COM port (Simulation by Proteus 7.8 SP2 and Virtual serial Port Driver 7.2 Trial) According to circuit I saw at internet, pin 2 of COM connect to pin 14 of max232 and 3-13 (Rx-T1OUT , Tx-R1IN) and Max232 to AT89c51 is 11 (...)
HI friends, I am using P89LV51RD2 (89c51 core) and it supports the maximum 33 mhz crystal frequency. With the same crystal i need to obtain 9600 baud rate for the serial communication. How it can be possible? Please help. Regards Binojkumar
Choose any microcontroller which have serial port (eg. 89c51 ,pic16f877etc) and connect its serial o/p pin to data line of rf module
hi gies.... I am trying to transmit data serially to my pc throught hyperterminal... But i am unable to do so... I am using 89s51 , Does 89s51 has buit in UART and can its timers capable of generating sufficient baud rate? On internet all the site's which have contents on serial data transfer , are using 89c51 series microcontrollers... (...)
what problem are you facing? elaborate your question so that everyone can understand what exactly you want. Have you done with serial communication of 8051 with PC using hyperterminal? or do you have any problem in it? Have you done with LCD interfacing with 8051? are you facing problem while combining these tasks??
It is. 1. Connect Tx, Rx and GND between serial port on PC or USB or serial convertor and ur microcontroller board RS232. 2. Set up an interrupt routine for RS232 communication in MCU, so that whenever u type in any letter the transmit receive register will receive the byte, save the byte in RAM and reset the interrupt flag bit. 3. Connect 16x2 LCD
Dear all, i need to write the microcontroller c programming code with the following requirements 1. To store data in the external serial eeprom(upto 64k update the data stored in the eeprom automatically compare the input data(from the serial input port) with the data stored in the eeprom 4.if the data matches fo
I am new in microcontroller world, want to interface two PC's using MAX232 and 89c51 microcontroller for Simplex serial port communication and Bi-directional communication. However, Simplex communication is working through microcontroller on hyper terminal, what should be the code to interface Bi-Directionally. Thanks in advance.
// Program to test serial communication of controller with PC using hyper terminal #include void ini() // Initialize Timer 1 for serial communication { TMOD=0x20; //Timer1, mode 2, baud rate 9600 bps TH1=0XFD; SCON=0x50; TR1=1; } void recieve() //Function to receive serial data { unsigned char value; while(RI==
#include sbit CS=P2^0; sbit SCLK=P2^1; sbit DIN=P2^2; sbit DOUT=P2^3; void delay() { int i; for(i=0;i<1200;i++) for(i=0;i<1200;i++) {} } void main() { unsigned char config= Value comes here ; //control register value( unsigned char x,z,out; while (1) { z=config; CS=0; for(x=0;x<17;x++) { SCLK=0; DIN=z; //
hello... i am interfacing LCD with 89c51 and and this uc1 recive data by serial connection... another uc2 send data to uc1 which display on LCD.... but the problem is that when i send data from uc2 to uc1 in this format like "" senddata('A') ''' it display on the lcd connected with uc1 but if i send some value like this, unsigned char v; v=5; se
hi I have a problem interfacing RF module(433Mhz ask) to 8051(atmel 89c51). I am using two micro controllers First: I have written a simple program to transmit 'A' serially if P1^0 is high in transmitter micro controller(uc1). and at receiver micro controller(uc2) to take serial data and put in on P1 of (uc2
>>> my ques is whether a single 89c51 support 2 max232. Nope, I don't think so. You can still try some "innovative" methods like chip select and like to share the hardware serial port. Otherwise, you can implement a soft-UART as well. BTW, for RFID readers (and tags), try:
hi I am using 89c51. for using serial port I am using these commands SCON = 0x50; /* SCON: mode 1, 8-bit UART, enable rcvr */ TMOD = 0x20; /* TMOD: timer 1, mode 2, 8-bit reload */ TH1 = 0xfd; /* TH1: reload value for 9600 baud */ TR1 = 1; /*
I m using 89c51 for serial port communication. I m taking binary data from port2 and converting it to ascii and then sending it to serial buffer , for binary(00)b ascii code is 0x30 , but the data read at vterminal is unreadable . plz help me with correct code. i m sending the current code i have developed.61595
You can use this programmer Programmer for 89c51/52/55 89S51/52 You need a usb to serial converter Another one. Atmel 89 Series Device Programmer Which can program 89cxx51 (at89c2051 etc.) chips.
If you don?t want to lose data you need to create additional serial port .. One already exists, so us it with the serial port interrupt .. The second port has to be created in software, and as port pins you can use EXT-INT0 or EXT-INT1 as RX pin and any general purpose I/O as TX pin (if required) .. SEARCH or Google for [8051 and SOFTWARE UA