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/*-----------------------------------------------------------------------------
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/*-----------------------------------------------------------------------------
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 * Public Functions
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 * Public Functions
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 *---------------------------------------------------------------------------*/
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 *---------------------------------------------------------------------------*/
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/**
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 * Initialize MCU. If the MCU is mega88, the internal clock frequency will be
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 * set to 8MHz. Interrupts must not be enabled when calling this function!
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 */
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void Mcu_Init() {
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    #if defined(__AVR_ATmega88__)
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    // set the clock speed to 8MHz
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    // set the clock prescaler. First write CLKPCE to enable setting of clock the
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    // next four instructions.
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    CLKPR=(1<<CLKPCE);
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    CLKPR=0; // 8 MHZ
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    #endif
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}
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/**
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/**
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 * Enable interrupts.
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 * Enable interrupts.
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 */
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 */
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void Mcu_EnableIRQ() {
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void Mcu_EnableIRQ() {