http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. Thu, 08 Jan 2009 22:35:48 -0800 http://backend.userland.com/rss092 actually i want to see the display through ports of the microcontroller by connecting a 7-segment display to it,how will i connect this 7-segment disp <noauthor@nospam.com> http://www.8051projects.net/forum-t9130.html Hi,From i want understand from your posts- the ADC value is displayed in Binary format on 8 LEDs on a port ( 33H(hex) - 00110011 (binary) - led7. . Arun Kumar V<nura1002003@nospam.com> http://www.8051projects.net/forum-t9130.html How many digits are u planning to connect to the uC?. Are u planning to display only numbers or also some alpha numeric characters? Please clarify.Act pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t9130.html actually i want to display some numbers only. my project is somewhat like this: i have interfaced adc(0804) and microcontroller(8051) .on appling a vo priya123<PUMK_2007@nospam.com> http://www.8051projects.net/forum-t9130.html Hi Priya...Plz do not make multiple posts of the same topic....you have posted the same question in 3 diff. threads!!As for your problem...you would n sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t9130.html For writing digits you'll have to send the fol. values to P1.Digit........ P1value(in hex)--------------------------------0........... C01........... sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t9130.html here is a simple idea for writing the display routine: (w.r.t the hardware suggested by shashi)first u define a byte say digit_count = 0. then folow t pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t9130.html sir, i have another doubt------ the thing is that actually for a certain voltage say 2volts ,adc is reading 033h ,this data i am sending to the microc priya123<PUMK_2007@nospam.com> http://www.8051projects.net/forum-t9130.html Plz go through the previous posts.Your answer is there.For displaying digit '0' in the 7-seg,you have to send 'C0'.For displaying digit '1',you have t sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t9130.html please provide your circuit... Ajay<contact@nospam.com> http://www.8051projects.net/forum-t9130.html here is a simple circuit for directly interfacing the 7 seg to uC without multiplexing which will require a little more hardware but the software is v pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t9130.html sir,i hv enclosed the assembly language program code of my project,but at that time i was seeing the display through leds connected on my trainer kit priya123<PUMK_2007@nospam.com> http://www.8051projects.net/forum-t9130.html where is the code?? shyam<shyam@nospam.com> http://www.8051projects.net/forum-t9130.html i had posted the code but somehow it didn't appear,anyways i am resending the code,please go through it and help me to find out what changes should i priya123<PUMK_2007@nospam.com> http://www.8051projects.net/forum-t9130.html Hi Priya123, did you read my earlier post in this thread ? it took a lot of my time to explain the whole concept in a simple way. Again your are bac Arun Kumar V<nura1002003@nospam.com> http://www.8051projects.net/forum-t9130.html Is the code for the 7segment display or for the simple LED display which u have written? please add circuit diagram or atleast the connections used by pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t9130.html OK one last time.....You can do it this way... CODE:data_display6: mov a,#0ffh
mov b,#0ah
div ab
mov r7,b
mov b,#0ah
div ab sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t9130.html after a match is found it can jmp to calling routineCODE:disp_7seg:  CJNE a,#0,D1
                &n Arun Kumar V<nura1002003@nospam.com> http://www.8051projects.net/forum-t9130.html oops forgot the return after match.....thanks Arun for the correction. sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t9130.html sir,i have tried to simulate my program by the way u suggested,i hv tried to write the program code in that way,but i think still i hv made some mist priya123<PUMK_2007@nospam.com> http://www.8051projects.net/forum-t9130.html sir,once again i tried to simulate the program by removing the statement CONVERSION:ACALL CONVERSION,program after being simulated shows no error ,in priya123<PUMK_2007@nospam.com> http://www.8051projects.net/forum-t9130.html Hi Priya,CODE:setb p2.5
setb p2.6
intr bit p2.7
setb intr
adc_port equ p1
 adc_val equ 30h
voltage_val equ r3
Arun Kumar V<nura1002003@nospam.com> http://www.8051projects.net/forum-t9130.html hi priya, looks like something is seriously missing in ur code.data_display1: mov a,#00hmov b,#0ah div ab -- pdi33<islurpundalik@nospam.com> http://www.8051projects.net/forum-t9130.html CODE:mov r6,b
mov r5,a
mov a,r7
mov p1,r7
acall disp_7segment
acall delay
mov a,r6
mov p1,r6
acall disp_7segme sashijoseph<sashijoseph@nospam.com> http://www.8051projects.net/forum-t9130.html thanx a lot a shash sir,arun sir n pdi33 sir,my program has now started working.its all because of ur guidance,thanx . priya123<PUMK_2007@nospam.com> http://www.8051projects.net/forum-t9130.html