9S12DG256 SCI0 not working with AsmIDE D-Dug12 V4

Started by jluc...@hotmail.com in 68HC129 years ago 2 replies

Hi I am working on a project for school and I am having trouble getting the SCI0 interrupt to work on my mini-dragon board from wytec...

Hi I am working on a project for school and I am having trouble getting the SCI0 interrupt to work on my mini-dragon board from wytec (evbplus.com). I have verified my code works in TExaS with the interrupt, but I am unable to get it to work on the AsmIDE terminal window. I can have the MCU send ASCII characters to the terminal, but I am unable to use keyboard entries to generate the interr...


Dragon12+ board and stepper motor

Started by Matthew Dauer in 68HC129 years ago 3 replies

I am sorry if this is a duplicate post. I'm not sure if the orig. Post went through. I need help connecting the motor with the dragon board and...

I am sorry if this is a duplicate post. I'm not sure if the orig. Post went through. I need help connecting the motor with the dragon board and its not connecting together. Can someone please give me a quick tutorial on this matter. Any help is greatly appreciated. Thanks so much ------------------------------------


MSCAN problem

Started by Johannes Schmid in 68HC129 years ago 13 replies

Hi everybody! I have a problem using the CAN-Bus interface of the HCS12 used in the MicroSquirt(tm) ECU we use on our Formula race...

Hi everybody! I have a problem using the CAN-Bus interface of the HCS12 used in the MicroSquirt(tm) ECU we use on our Formula race car. Following the various data sheets I came up with the following code: void CanInit(void) { /* Set up CAN communications */ /* Enable CAN, set Init mode so can change registers */ CANCTL1 |= 0x80; CANCTL0 |= 0x01; while(!(CANCTL1 & 0x01)) ...


Looking for link to Eric Engler EmbeddedGNU for HC12

Started by sbuckser in 68HC129 years ago 4 replies

Hi, I see various links to Eric Engler's EmbeddedGNU web site, but the site is down. Is there a link to another site that has the package or...

Hi, I see various links to Eric Engler's EmbeddedGNU web site, but the site is down. Is there a link to another site that has the package or can someone send me a copy? Thanks, Steve Buckser ------------------------------------


A good book for the MC9S12DP512?

Started by elec...@hotmail.com in 68HC129 years ago 4 replies

Hello all, I am looking for a good tutorial type book on my microcontroller. I have a MC9S12DP512 on a CMD-12DP512 development board. For my...

Hello all, I am looking for a good tutorial type book on my microcontroller. I have a MC9S12DP512 on a CMD-12DP512 development board. For my old HC11, I refered to "The 68HC11 Microcontroller" by Greenfield. It would be great to find a book that would take me step-by-step into all the functions for my current MCU! Thanks alot in advance! Jerry Fields ------------------------------------ ...


Floating Point using AN974 with MC9S12A256

Started by ga5941 in 68HC129 years ago 5 replies

Earlier I reported a problem(16296)using AN974, MC68HC11 Floating Point Package by Gordon Doughman. I'm now happy to report that I have resolved...

Earlier I reported a problem(16296)using AN974, MC68HC11 Floating Point Package by Gordon Doughman. I'm now happy to report that I have resolved the problem and it wasn't with AN974. My floating point calculations in assembly code are working correctly including trig functions. The package, however, does not include an Arctan function. I have written my own, in assembly of course, using the Cordic...


Problem initialise timer for 1µs cycle

Started by folg...@yahoo.com in 68HC129 years ago 2 replies

Hello, I have a problem with using the Timer on a MC9S12DP512. I want to create 1µ second cycles. Every µs I want to increment a variable,...

Hello, I have a problem with using the Timer on a MC9S12DP512. I want to create 1µ second cycles. Every µs I want to increment a variable, but I do not know how to initialise the timer, so that I get a timer interrupt every µs. I hope that someone can help me. Best regards Here is my function to initialise the timer: -------------------------------------------- void Init_Timers(void...


Please Help...Programming Assitance Needed with Dragon12

Started by b_scheibe in 68HC129 years ago 7 replies

I am very new to programming/HC12 so please bare with me. The code i am currently dealing with is something my professor made available so...

I am very new to programming/HC12 so please bare with me. The code i am currently dealing with is something my professor made available so that i can modify it. I am trying to run a heater using the Dragon 12 with a relay hooked up between the two. I already have a thermistor set up on the board with temperature being displayed to the LCD. I am wanting the heater to turn on when the ...


I need help with an ideal for a class project

Started by truelove_30 in 68HC129 years ago 2 replies

Are there any websites give project ideal using the dragon 12 board? ------------------------------------

Are there any websites give project ideal using the dragon 12 board? ------------------------------------


MC9S12DP512 Software Interrupt

Started by ga5941 in 68HC129 years ago 2 replies

My program is executing a hardware interrupt reading the serial keypad and I want to turn on the display which uses the same serial port and...

My program is executing a hardware interrupt reading the serial keypad and I want to turn on the display which uses the same serial port and interrupt service routine. Trying to generate a transmit interrupt before the receive rti instruction executes causes the system to hang up. Is there any way to implement a software interrupt so that after the serial receive hardware interrupt finishes the s...


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