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📁 AT91SAM 系列微控制器的NAND Flash支持代码 描述怎样将NAND Flash和AT91SAM 系列微控制器连接起来。
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<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_MATRIX_DisableSM_On_CS3">AT91F_MATRIX_DisableSM_On_CS3</a></b></font>
<font color=#B22222>//* \brief Disable the Chip Select 3 <font color=#0000FF>for</font> CF Controller</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_MATRIX_DisableSM_On_CS3">AT91F_MATRIX_DisableSM_On_CS3</a> (
        <a href="AT91SAM9261_h.html#AT91PS_MATRIX">AT91PS_MATRIX</a> pMATRIX)                        <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_MATRIX.html#MATRIX">MATRIX</a> registers</font>
         
{
    pMATRIX-><a href="AT91SAM9261_MATRIX.html#MATRIX_EBICSA">MATRIX_EBICSA</a> &= ~<a href="AT91SAM9261_h.html#AT91C_MATRIX_CS3A_SM">AT91C_MATRIX_CS3A_SM</a>;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_MATRIX_EnableCF_On_CS4">AT91F_MATRIX_EnableCF_On_CS4</a></b></font>
<font color=#B22222>//* \brief Enable the Chip Select 4 <font color=#0000FF>for</font> CF Controller</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_MATRIX_EnableCF_On_CS4">AT91F_MATRIX_EnableCF_On_CS4</a> (
        <a href="AT91SAM9261_h.html#AT91PS_MATRIX">AT91PS_MATRIX</a> pMATRIX)                        <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_MATRIX.html#MATRIX">MATRIX</a> registers</font>
         
{
    pMATRIX-><a href="AT91SAM9261_MATRIX.html#MATRIX_EBICSA">MATRIX_EBICSA</a> |= <a href="AT91SAM9261_h.html#AT91C_MATRIX_CS4A_CF">AT91C_MATRIX_CS4A_CF</a>;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_MATRIX_DisableCF_On_CS4">AT91F_MATRIX_DisableCF_On_CS4</a></b></font>
<font color=#B22222>//* \brief Disable the Chip Select 4 <font color=#0000FF>for</font> CF Controller</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_MATRIX_DisableCF_On_CS4">AT91F_MATRIX_DisableCF_On_CS4</a> (
        <a href="AT91SAM9261_h.html#AT91PS_MATRIX">AT91PS_MATRIX</a> pMATRIX)                        <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_MATRIX.html#MATRIX">MATRIX</a> registers</font>
         
{
    pMATRIX-><a href="AT91SAM9261_MATRIX.html#MATRIX_EBICSA">MATRIX_EBICSA</a> &= ~<a href="AT91SAM9261_h.html#AT91C_MATRIX_CS4A_CF">AT91C_MATRIX_CS4A_CF</a>;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_MATRIX_EnableCF_On_CS5">AT91F_MATRIX_EnableCF_On_CS5</a></b></font>
<font color=#B22222>//* \brief Enable the Chip Select 5 <font color=#0000FF>for</font> CF Controller</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_MATRIX_EnableCF_On_CS5">AT91F_MATRIX_EnableCF_On_CS5</a> (
        <a href="AT91SAM9261_h.html#AT91PS_MATRIX">AT91PS_MATRIX</a> pMATRIX)                        <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_MATRIX.html#MATRIX">MATRIX</a> registers</font>
         
{
    pMATRIX-><a href="AT91SAM9261_MATRIX.html#MATRIX_EBICSA">MATRIX_EBICSA</a> |= <a href="AT91SAM9261_h.html#AT91C_MATRIX_CS5A_CF">AT91C_MATRIX_CS5A_CF</a>;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_MATRIX_DisableCF_On_CS5">AT91F_MATRIX_DisableCF_On_CS5</a></b></font>
<font color=#B22222>//* \brief Disable the Chip Select 5 <font color=#0000FF>for</font> CF Controller</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_MATRIX_DisableCF_On_CS5">AT91F_MATRIX_DisableCF_On_CS5</a> (
        <a href="AT91SAM9261_h.html#AT91PS_MATRIX">AT91PS_MATRIX</a> pMATRIX)                        <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_MATRIX.html#MATRIX">MATRIX</a> registers</font>
         
{
    pMATRIX-><a href="AT91SAM9261_MATRIX.html#MATRIX_EBICSA">MATRIX_EBICSA</a> &= ~<a href="AT91SAM9261_h.html#AT91C_MATRIX_CS5A_CF">AT91C_MATRIX_CS5A_CF</a>;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_MATRIX_EnableEBIPULLUP">AT91F_MATRIX_EnableEBIPULLUP</a></b></font>
<font color=#B22222>//* \brief Enable the EBI PULLUP</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_MATRIX_EnableEBIPULLUP">AT91F_MATRIX_EnableEBIPULLUP</a> (
        <a href="AT91SAM9261_h.html#AT91PS_MATRIX">AT91PS_MATRIX</a> pMATRIX)                        <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_MATRIX.html#MATRIX">MATRIX</a> registers</font>
         
{
    pMATRIX-><a href="AT91SAM9261_MATRIX.html#MATRIX_EBICSA">MATRIX_EBICSA</a> |= <a href="AT91SAM9261_h.html#AT91C_MATRIX_DBPUC">AT91C_MATRIX_DBPUC</a>;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_MATRIX_DisableEBIPULLUP">AT91F_MATRIX_DisableEBIPULLUP</a></b></font>
<font color=#B22222>//* \brief Disable the EBI PULLUP</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_MATRIX_DisableEBIPULLUP">AT91F_MATRIX_DisableEBIPULLUP</a> (
        <a href="AT91SAM9261_h.html#AT91PS_MATRIX">AT91PS_MATRIX</a> pMATRIX)                        <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_MATRIX.html#MATRIX">MATRIX</a> registers</font>
         
{
    pMATRIX-><a href="AT91SAM9261_MATRIX.html#MATRIX_EBICSA">MATRIX_EBICSA</a> &= ~<a href="AT91SAM9261_h.html#AT91C_MATRIX_DBPUC">AT91C_MATRIX_DBPUC</a>;
}



/* *****************************************************************************
                SOFTWARE API FOR <a href="AT91SAM9261_AIC.html#AIC">AIC</a>
   ***************************************************************************** */
<font color=#008200>#define</font> AT91C_AIC_BRANCH_OPCODE ((<font color=#0000FF>void</font> (*) ()) 0xE51FFF20) <font color=#B22222>// ldr, pc, [pc, #-&F20]</font>

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_AIC_ConfigureIt">AT91F_AIC_ConfigureIt</a></b></font>
<font color=#B22222>//* \brief Interrupt Handler Initialization</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> <a href="#AT91F_AIC_ConfigureIt">AT91F_AIC_ConfigureIt</a> (
	<a href="AT91SAM9261_h.html#AT91PS_AIC">AT91PS_AIC</a> pAic,  <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_AIC.html#AIC">AIC</a> registers</font>
	<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> irq_id,     <font color=#B22222>// \arg interrupt number to initialize</font>
	<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> priority,   <font color=#B22222>// \arg priority to give to the interrupt</font>
	<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> src_type,   <font color=#B22222>// \arg activation and sense of activation</font>
	<font color=#0000FF>void</font> (*newHandler) (<font color=#0000FF>void</font>) ) <font color=#B22222>// \arg address of the interrupt handler</font>
{
	<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> oldHandler;
    <font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> mask ;

    oldHandler = pAic-><a href="AT91SAM9261_AIC.html#AIC_SVR">AIC_SVR</a>[irq_id];

    mask = 0x1 << irq_id ;
    <font color=#B22222>//* Disable the interrupt on the interrupt controller</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_IDCR">AIC_IDCR</a> = mask ;
    <font color=#B22222>//* Save the interrupt handler routine pointer and the interrupt priority</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_SVR">AIC_SVR</a>[irq_id] = (<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font>) newHandler ;
    <font color=#B22222>//* Store the Source Mode Register</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_SMR">AIC_SMR</a>[irq_id] = src_type | priority  ;
    <font color=#B22222>//* Clear the interrupt on the interrupt controller</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_ICCR">AIC_ICCR</a> = mask ;

	<font color=#0000FF>return</font> oldHandler;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_AIC_EnableIt">AT91F_AIC_EnableIt</a></b></font>
<font color=#B22222>//* \brief Enable corresponding IT number</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_AIC_EnableIt">AT91F_AIC_EnableIt</a> (
	<a href="AT91SAM9261_h.html#AT91PS_AIC">AT91PS_AIC</a> pAic,      <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_AIC.html#AIC">AIC</a> registers</font>
	<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> irq_id ) <font color=#B22222>// \arg interrupt number to initialize</font>
{
    <font color=#B22222>//* Enable the interrupt on the interrupt controller</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_IECR">AIC_IECR</a> = 0x1 << irq_id ;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_AIC_DisableIt">AT91F_AIC_DisableIt</a></b></font>
<font color=#B22222>//* \brief Disable corresponding IT number</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_AIC_DisableIt">AT91F_AIC_DisableIt</a> (
	<a href="AT91SAM9261_h.html#AT91PS_AIC">AT91PS_AIC</a> pAic,      <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_AIC.html#AIC">AIC</a> registers</font>
	<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> irq_id ) <font color=#B22222>// \arg interrupt number to initialize</font>
{
    <font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> mask = 0x1 << irq_id;
    <font color=#B22222>//* Disable the interrupt on the interrupt controller</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_IDCR">AIC_IDCR</a> = mask ;
    <font color=#B22222>//* Clear the interrupt on the Interrupt Controller ( <font color=#0000FF>if</font> one is pending )</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_ICCR">AIC_ICCR</a> = mask ;
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_AIC_ClearIt">AT91F_AIC_ClearIt</a></b></font>
<font color=#B22222>//* \brief Clear corresponding IT number</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_AIC_ClearIt">AT91F_AIC_ClearIt</a> (
	<a href="AT91SAM9261_h.html#AT91PS_AIC">AT91PS_AIC</a> pAic,     <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_AIC.html#AIC">AIC</a> registers</font>
	<font color=#0000FF>unsigned</font> <font color=#0000FF>int</font> irq_id) <font color=#B22222>// \arg interrupt number to initialize</font>
{
    <font color=#B22222>//* Clear the interrupt on the Interrupt Controller ( <font color=#0000FF>if</font> one is pending )</font>
    pAic-><a href="AT91SAM9261_AIC.html#AIC_ICCR">AIC_ICCR</a> = (0x1 << irq_id);
}

<font color=#B22222>//*----------------------------------------------------------------------------</font>
<font color=#B22222>//* \fn    <b><a name="AT91F_AIC_AcknowledgeIt">AT91F_AIC_AcknowledgeIt</a></b></font>
<font color=#B22222>//* \brief Acknowledge corresponding IT number</font>
<font color=#B22222>//*----------------------------------------------------------------------------</font>
__inline <font color=#0000FF>void</font> <a href="#AT91F_AIC_AcknowledgeIt">AT91F_AIC_AcknowledgeIt</a> (
	<a href="AT91SAM9261_h.html#AT91PS_AIC">AT91PS_AIC</a> pAic)     <font color=#B22222>// \arg pointer to the <a href="AT91SAM9261_AIC.html#AIC">AIC</a> registers</font>
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