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Discussion Groups | M68HC11 | IRQ Interrupt
Technical discussions about Freescale Microcontrollers: M68HC11. (Freescale Semiconductor is a Subsidiary of Motorola).
IRQ Interrupt - fidjouss - Mar 13 5:30:00 2005
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Hello all I am trying to build a voice activated alarm clock. I am using adapt11 board with 68hc11E2 to connect to a voice recognition board. so once a word is recognized, the board sends me a signal that pulls down IRQ then I read the data throught portc. Note* I am using a delay after reading each digit and store it in memory for later use. I have to read four digits ( I am not very familiar with serial communication). is there a better way of doing this without going through serial com.. ? will there be a conflict between IRQ and portc? does anyone know of a nice emulator for 68hc11 since the one i have allows only 256 bytes of code and my code is bigger than that and gives me aerror onces it reaches 256? Thanks in advance |
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Re: IRQ Interrupt - Author Unknown - Mar 13 11:09:00 2005
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In a message dated 3/13/05 4:31:42 A.M. Eastern Standard Time, writes: I am trying to build a voice activated alarm clock. I am using adapt11 board with 68hc11E2 to connect to a voice recognition board. so once a word is recognized, the board sends me a signal that pulls down IRQ then I read the data throught portc. Note* I am using a delay after reading each digit and store it in memory for later use. I have to read four digits ( I am not very familiar with serial communication). is there a better way of doing this without going through serial com.. ? will there be a conflict between IRQ and portc? does anyone know of a nice emulator for 68hc11 since the one i have allows only 256 bytes of code and my code is bigger than that and gives me aerror onces it reaches 256? ========================================= portc is a parallel interface.... the serial interface is the sci..... you ask for an emulator, but I think you want a simulator, right? Explain why a delay is needed? Should be able to service the irq interrupt in microseconds... 'word has arrived' interrupts cant arrive faster than tens or hundreds of milliseconds,,, [Non-text portions of this message have been removed] |
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Re: IRQ Interrupt - fidjouss - Mar 13 12:29:00 2005
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--- In , BobGardner@a... wrote: > I am using IRQ just to establish communication with adapt11 (get the adapt11 ready to read the data). The delay is used after reading each digit from portc. and yes I do mean a simulator that allows more than 256 bytes of code. > ========================================= > portc is a parallel interface.... the serial interface is the sci..... you > ask for an emulator, but I think you want a simulator, right? Explain why a > delay is needed? Should be able to service the irq interrupt in > microseconds... 'word has arrived' interrupts cant arrive faster than tens or hundreds of > milliseconds,,, > [Non-text portions of this message have been removed] |
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