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. en-gb 2008-12-01T22:53:42-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Please post your doubts regarding "Lets Learn AVR - step by step tutorial" here..we will discuss it.. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 4y133 Hi ajay, How are you? i hope you are fine.Ok ajay, i have a problem with the software. i already download all software that u give in the 1st step. but when i try to install my computer will be stuck. i try to install it to other computer, but it still same.. and 1 thing, can u give the full schematic for avr? becoz the schematic that u give only for interface. so if u dont mind i want the full schematic for avr becoz i want to compare it with my schematic.Thanks rgdsBoB http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay what do you mean by full schematic? also... I have installed the software in my PC i don't feel any problem.. can you try a different version of AVR studio.. that might help.. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 4y133 i mean schematic diagram for avr. ok ajay, now i can install the program. Thanks. the problem is the file that i download was corrupted. thats why i cannot install the program. hehe http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay ok..for AVR its very simple..everything is labeled.. MISO will go to MISO of AVRMOSI with MOSI of AVRSCK with SCK of AVRRESET with RESET of AVRLED with simple.. LED on the target board.. or u can leave open if you don't want to connectLed is connected like this.. on the target board..LED ---| http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 4y133 ok. Thanks ajay for ur information. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 milky Ajay~i want to ask about the step3 tutorial.LD Rn,X+/Y+/Z+ , this instruction.i'm curious about the Z+. izzit this code is for the next pointer?so if i only want to load in only 1 data from 1 address then izzit Z is enough? http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay yeah.. slashes in the instruction means you can either use x, y or z.i.e. LD Rn X+orLD Rn Y+orLD Rn Z+ That command load the register Rn with the value stored at location Z and then increment Z.if you just want to load from location Z and do not want it to increment then you can use the following commandLD Rn, Zthis will load register Rn with value stored at location Z. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 MATHIVANAN hey milky if u want load only one data from address location of ram means , u can do following instructionLDS r16,$0061 this instruction will directly load the data from ram location $0061and also if u want store directly means STS $0061,r16this will store the data to the location $0061 http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Robbby Hi Ajay,I'm begginer in AVRstudio and winAVR. I wrote lcd .h and .c file, but when I use .h in other project, building final files fails:../test.c:7: undefined reference to `LCD_init'../test.c:11: undefined reference to `LCD_cursorxy'../test.c:12: undefined reference to `LCD_sendstring'make: *** [test.elf] Error 1Build failed with 3 errors and 1 warnings...lcd.c was checked before and works fine. I don't know where my mistake is.Can you help me??? regards Robbby http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay files need to be in the same directory as your project.is the lcd.c and lcd.h lies in same folder as test.c? http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Robbby Hello, I have al the projects files in the same directory, but nothing.Robbby http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay Robby can you please make a new thread? because this is for tutorial doubts. Please make a new thread in AVR discussion forum.. and explain problem again.. thank you.. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Robbby Question from AVR keypad tutorial. I wanna join keypad and lcd in my project with your lcd and keypad drivers from tutorial. The problem is how to display pushed key on LCD display. I study your project and found statements like this: while(!(key = getkey()));key = translate (key);lcddata(key);I understand all this statemnt, but not working in my project. LCD display different characters. Can you tell me, what I'm doing wrong.regardsRobbby http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay what are you doing in the translate function?is it same as mine?what kind of characters are being displayed? http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Robbby My mistake in return statements:return KEYval + '0'; // I forgot ' ' around 0, so the result was wrong characters...ej ej my desultory typingRobbby http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay hope everything is fine now http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 abbas1707 Ajay please edit UART tutorial ( c program)UBRRL shoud be equall to 0x19 for baud rate 9600:-|u wrote by mistake 0x17;void serial_init(){ UCSRA=0x00; UCSRB=0x18; UCSRC=0x86; UBRRH=0x00; UBRRL=0x19;} http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay AVR has got inbuilt I2C ports.. you can directly use them.. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 MATHIVANAN i am having ATMEGA32 . i want to interface to DS1307 with ATMEGA32. What is the bit rate value for DS1307, Note the maximum Freq of DS1307 is 100KHZ. what are all the routines can i follow for the DS1307. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay In I2C Bit rate is not specific. The clock is controlled by master so it can be anything depending on speed of master controller. However maximum speed is always specified in data sheets. For DS1307 its 400kbps i think but still check its data sheet once and configure your controller accordingly. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 MATHIVANAN Yes. ATMEGA32 having inbuilt I2C ports but it cannot works for me ..i think the bit rate is not correct.what is the bit rate for DS1307. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay ok!! my mistake.. but how i made that mistake edit:mistake rectified.. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay link not working? can you post the link here? http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 dudu9 hi guys. i am trying to start prjcts with my atmega162. i started with the step by step tutorial, but the links isn't working has any 1 similar problem.. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay will give code examples only with tutorial. So please wait till i write for SPI (not SPm i think). I will try to write it soon.if you have written your own code then you can open up a new thread and ask your doubt i will help u out. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 MATHIVANAN hi ajay i want to use SPI. i have some doubts. please give me simple example how to do that in ATMEGA32. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 Ajay code vision is not free.. i am putting stress on free compilers, so everyone can afford to learn. http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 zeeshan99s any tutorial for codevision....... http://www.8051projects.net/forum-t1700.html 2008-12-01T22:53:42-08:00 MATHIVANAN Hi Ajay I am using I2C but i cannt get the exact clock speed. Crystal Osc=8Mhz and I2C bus Speed 100Khz, what is the Bitrate value?