Search found 80 matches

by mikeb
Sat Oct 04, 2003 9:02 pm
Forum: General Discussion
Topic: keypad input to input controller port ?
Replies: 1
Views: 716

Re: keypad input to input controller port ?

any one reading this post can ignore it the problem was simply a matter of resetting the board before running the code.
by mikeb
Sat Oct 04, 2003 8:09 pm
Forum: General Discussion
Topic: re: to all who answered to the loweering the voltage ?
Replies: 0
Views: 688

re: to all who answered to the loweering the voltage ?

thanks much for all thew input i decide on the zener voltage setup since im using to different sources one at 5volts an one at 3.3 volts i tie the zener an current limiter resistor to the 5 volt supply using a 3.6 volt zener and the board seems to like the match all worked really well. thanks for al...
by mikeb
Sat Oct 04, 2003 8:05 pm
Forum: General Discussion
Topic: keypad input to input controller port ?
Replies: 1
Views: 716

keypad input to input controller port ?

im trying to read the data input from a keypad encoder ic that has a data vaild output. i have the data valid output connected to one of the controller input pins on 1 port, with all the other pins some for input some for output set so that when the dat valid signal is recieved by the port it will r...
by mikeb
Fri Oct 03, 2003 5:50 pm
Forum: General Discussion
Topic: re; to all who answered the lowering output voltage ques
Replies: 2
Views: 846

re; to all who answered the lowering output voltage ques

im wondering if i could simply just connect a trimmer pot at the port output pins to the module an set the output from the trimmer at just under 3.3 volts(3.1v) to handle any voltage fluctuations from the controller. would this be a good way to lower the voltage.
by mikeb
Thu Oct 02, 2003 4:47 pm
Forum: General Discussion
Topic: lowering the output voltage question
Replies: 3
Views: 1118

lowering the output voltage question

im using to different circuit boards run from 2 different power sources board1 has a vdd of 5volts and board2 has a vdd of 3.3 volts. board1 outputs are connected to the inputs of board2. the outputs when high from board1 are at 5 volts the inputs of board2 can only be as much as 3.3 volts when the ...
by mikeb
Wed Oct 01, 2003 6:59 pm
Forum: General Discussion
Topic: interface problems
Replies: 1
Views: 751

interface problems

im trying to interface a microcontroller port, setup as a input port(high impedance inputs) to a voice recognition module, whos data output pins toggle high then go low, when the board is first powered up or reset.im running the boards from 2 different power supplys,and im wondering what if any, int...
by mikeb
Sat Sep 13, 2003 8:55 pm
Forum: Computer Programming
Topic: INTERNAL CONTROLLER MEMORY HELP
Replies: 1
Views: 1646

INTERNAL CONTROLLER MEMORY HELP

DOES ANY ONE KNOW WHY A MICROCONTROLLER WOULD FAIL TO WRITE TO INTERNAL RAM ONCE THE CONTROLLER IS CONNECTED TO EXTERNAL DEVICES. THE PROBLEM IM HAVING IS GETTING INTERNAL RAM TO ACCEPT DATA WRITES WHEN THE CONTROLLER HAS EXTERNAL DEVICES CONNECTED TO ITS PORT OUTPUT AN INPUT PINS. I GUESS IM WONDER...
by mikeb
Wed Sep 10, 2003 1:44 pm
Forum: Computer Programming
Topic: MEMORY LOACTIO HELP
Replies: 1
Views: 1646

MEMORY LOACTIO HELP

HELLLO BODGY THANKS MUCH FOR THE INFO YOU GAVE ME CONCERNING THE LCD AN FCC INSTRUCTION NOT USING THE HC11 THE ANSWERS YOU GAVE ME HELPED ME A LOT I WAS ABLE TO NARROW DOWN THE CAUSE OF WHY THE DISPLAY IS NOT RESPNDING TO THE MEMORY LOACTIONS, SO NOW I THINK MY QUESTION IS A BASCI ONE THAT PERTAINS ...
by mikeb
Tue Sep 09, 2003 10:12 am
Forum: Computer Programming
Topic: HELP WITH FCC TO DISPLAY INSTRUCTIONS
Replies: 1
Views: 1666

HELP WITH FCC TO DISPLAY INSTRUCTIONS

IM TRYING TO WRITE A SIMPLY PROGRAM USING THE HC11 FCC INSTRUCTION ie. MSG1 FCC 'HELLO ' AND THE HC11 SPI THAT WILL DISPLAY CHARACTERS ON THE DISPLAY SCREEN. IM USING REGISTER X TO LOAD THE MSG1 ie. LDX #MSG1 IT WOULD APPEAR THAT WHEN THE PROGRAM GETS TO THE LDX PART OF THE PROGRAM IT GETS STUCK AN ...
by mikeb
Thu Sep 04, 2003 1:09 pm
Forum: General Discussion
Topic: HC11 TO SERIAL LCD CONTROLLER EDE702 ?
Replies: 1
Views: 663

Re: HC11 TO SERIAL LCD CONTROLLER EDE702 ?

that should be hc11 TxD PIN
by mikeb
Thu Sep 04, 2003 1:07 pm
Forum: General Discussion
Topic: HC11 TO SERIAL LCD CONTROLLER EDE702 ?
Replies: 1
Views: 663

HC11 TO SERIAL LCD CONTROLLER EDE702 ?

HAS ANYONE USED THE EDE702 SERIAL LCD CONTROLLER IC. IM TRYING TO USE THIS CHIP AN I DONT SEEM TO BE ABLE TO GET ANY TEXT TO DISPLAY ON THE SCREEN OF THE LCD. IM NOT SURE IF ITS MY CODE OR WHETHER THE HC11 IS NOT TRANSMITTING OUT THE RXD PIN. I HAVE COPYED AN PASTED THE A CODE SNIPET, IF ANY ONE HAS...
by mikeb
Sun Aug 31, 2003 7:52 pm
Forum: General Discussion
Topic: help with bita or bitb hc11 instruction
Replies: 1
Views: 1058

help with bita or bitb hc11 instruction

my question probably has a very easy answer but i dont seem to know what it is. id like to know can the hc11 instruction bita be used to test a certain bits status in a port. for instance say you have a port such as porta of the hc11 and its setup with 3bits as general purpose inputs and 5 bits as g...
by mikeb
Sat Aug 30, 2003 6:52 pm
Forum: General Discussion
Topic: need help with pocket programmer 2
Replies: 2
Views: 1289

Re: need help with pocket programmer 2

THANKS BODGY FOR THE INFO, I CHANGED THE FILE TYPE TO MOTOROLA HEX AND IT SEEMS TO BE DOING ALL THE NECCESSARY CONVERSIONS TO PLACE THE .S19 FILES INTO THE BUFFER, ONCE AGAIN THANKS A BUNCH
by mikeb
Sat Aug 30, 2003 4:56 pm
Forum: General Discussion
Topic: need help with pocket programmer 2
Replies: 2
Views: 1289

need help with pocket programmer 2

does anyone know what format does the pocket programmer to has to be in to load a .s19 file from my computer harddrive into the programmers buffer in order to program a blank eeprom.the programmer offers the following choices: ascii hex file binary file intel hex motorola hex<p>i have tried ascii an...
by mikeb
Fri Aug 15, 2003 8:24 am
Forum: General Discussion
Topic: REPLY
Replies: 0
Views: 1191

REPLY

THANKS AGAIN FOR TH INFO AN ADVISE IT WAS VERY HELPFUL