Menu Interface

Started by "mr.mattyg" in 68HC1211 years ago 2 replies

Hi Guys, So I'm writing a menu interface that takes input from a keypad and displays info on an LCD. Basically I have a main menu and three...

Hi Guys, So I'm writing a menu interface that takes input from a keypad and displays info on an LCD. Basically I have a main menu and three selections. The user can enter 1, 2, or 3 to access one of three sub-menus. What I do is input the keypad entry, make sure it was number 1, 2, or 3, since those are my only sub menu options. I also have the sub menu function addresses stored in a...


How much current does the 68HC12 put out?

Started by Tim in 68HC1215 years ago 2 replies

Hello all, long time read, first time poster. We've been working hard on driving a Seiko G321D LCD screen through the 68HC12 (on an...

Hello all, long time read, first time poster. We've been working hard on driving a Seiko G321D LCD screen through the 68HC12 (on an AXIOM board). However we're running in a jam. Our professor suggested that we use a 74LS244 buffer to increase the current on the board. This could


Problems RECEIVING through SCI1

Started by gogosgeorge in 68HC1214 years ago 28 replies

Hi guys, Well, I have set up my SCI1 right to transmit data, now Im having problems receiving on the other end. Ive set up...

Hi guys, Well, I have set up my SCI1 right to transmit data, now Im having problems receiving on the other end. Ive set up my transmitter to actually send through a string, to my LCD, which works fine. Ive done all the setup for transmitting, but a bit stumped on the


Modulus down counter not working

Started by jeff...@bendnet.com in 68HC127 years ago 7 replies

Hello, I am using a Wytec microdragon with serial monitor & trying to get a 25ms interrupt. I had it working in a previous similar project, so I...

Hello, I am using a Wytec microdragon with serial monitor & trying to get a 25ms interrupt. I had it working in a previous similar project, so I believe the code should work. The keypad & lcd work fine. My question is: is there some input pin that could be affecting the modulus counter? As soon as the interrupts turn on all control is lost. Any code after (interrupts_on) is not executed - Je...


declaring a variable and a string for 68HC12

Started by Lerzan Celikkanat in 68HC1214 years ago 5 replies

Below code (written for Motorola 68HC12) displays the alphabet on an lcd screen. How can I modify this code so that it can display a...

Below code (written for Motorola 68HC12) displays the alphabet on an lcd screen. How can I modify this code so that it can display a welcome message for 5 sec.s and then print out a variable called "price" . In other words how do i declare a string and a variable for hc12? if it were hc05 it would have been something like ORG $50 m


Software RTC

Started by hc08jb8 in 68HC1215 years ago 8 replies

Hello Folks I am trying to implement a software based RTC on a HC12 mcu, this is simply to display the time on a LCD. The mcu...

Hello Folks I am trying to implement a software based RTC on a HC12 mcu, this is simply to display the time on a LCD. The mcu gets its initial time value via SCI from a PC, having got that it needs to keep track of time locally and update the display as well. A few seconds


can't find port A/B info

Started by ctrobot28 in 68HC1215 years ago 4 replies

I've got an LCD hooked to a 9S12DP256, via port A for data and the top 3 bits of port B for control (it's in normal single chip...

I've got an LCD hooked to a 9S12DP256, via port A for data and the top 3 bits of port B for control (it's in normal single chip mode). Naturally, it's not working. I've set the DDR bits for the ports, but I don't know if there's anything else I should set for port control,


Re: Problems with a 4*20 LCD at a HCS12

Started by Werner Wittig in 68HC1210 years ago

if your code runs on the MSP430 I assume that it is a timing problem during setup of the display. I wrote the code in assembler and did a lot...

if your code runs on the MSP430 I assume that it is a timing problem during setup of the display. I wrote the code in assembler and did a lot of cycle counting as the display controller needs some time to perform the commands Werner mailto:w...@wittig-werner.de > Yes, I know but the same code runs on a MSP430 perfectly. At the HCS12 > it does not run or only the first and third l


Upgradation of 68HC11 to 68HC12

Started by yogan_bud in 68HC128 years ago

hi I would like to upgrade a system which is interfaced for an application with Key pad ,key reader & LCD display working on 68HC11. I would...

hi I would like to upgrade a system which is interfaced for an application with Key pad ,key reader & LCD display working on 68HC11. I would like to know if i upgrade that same system with 68HC12 can i also interface it with touch screen panel, card reader,key reader, RF id. Please do reply . ------------------------------------


put const datas in paged area with ICC12

Started by Anonymous in 68HC1213 years ago

Hello ! I use ICC12 professionnal version, with NoIce debugger, 9s12dp256 processor. I wrote a program for a graphic LCD display,...

Hello ! I use ICC12 professionnal version, with NoIce debugger, 9s12dp256 processor. I wrote a program for a graphic LCD display, using font characters (9 character sets). So I wrote before a program which translates graphic BMP windows files with fonte character into texte files (on request, if somebody interested, I can upload the source of


HC12 and graphic color display

Started by jpdi...@free.fr in 68HC1212 years ago

Hello ! I know this forum is about 9s12 processor, but I can't find any data sheet about a LCD color display from Sharp :...

Hello ! I know this forum is about 9s12 processor, but I can't find any data sheet about a LCD color display from Sharp : "LQ035Q7DB02". It's a color 240 x 320 pixels, 6 bits for each primary color, and touch panel. It seems it is very often used for example on PDA organizer as Dell Axim... The only data sheet I can find is about 20 pages (Spec no LCY-0204, issue March 14, 2002), which d...


Help needed storing array in EEPROM

Started by Simplymail in 68HC1214 years ago 14 replies

I'm using this board: http://www.axman.com/education/edc_hc12.html a DS1305, hall sensor, LCD, Keypad. Compiled with...

I'm using this board: http://www.axman.com/education/edc_hc12.html a DS1305, hall sensor, LCD, Keypad. Compiled with GNU for 68HC11 & 68HC12 EmbeddedGNU The data collected from the hall is time stamped, and two different arrays are created - one with 23 rows


WHAT ARE THE COMMANDS 'DB' and 'DW' ???? HELP!!!!

Started by gogosgeorge in 68HC1214 years ago

Guys, I found something to look at for interfacing the LCD module (thanks Edward Karpicz). see ...

Guys, I found something to look at for interfacing the LCD module (thanks Edward Karpicz). see http://www.freescal e.com/files/microcontrollers/doc/app_note/AN1774.p df PA