initial import of the usb ccid example for the sam7s

2 files changed, 166 insertions, 0 deletions

diff --git a/at91lib/peripherals/aic/aic.c b/at91lib/peripherals/aic/aic.c
new file mode 100644
index 0000000..4ff52c2
--- /dev/null
+++ b/at91lib/peripherals/aic/aic.c
@@ -0,0 +1,87 @@
+/* ----------------------------------------------------------------------------

+ *         ATMEL Microcontroller Software Support 

+ * ----------------------------------------------------------------------------

+ * Copyright (c) 2008, Atmel Corporation

+ *

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions are met:

+ *

+ * - Redistributions of source code must retain the above copyright notice,

+ * this list of conditions and the disclaimer below.

+ *

+ * Atmel's name may not be used to endorse or promote products derived from

+ * this software without specific prior written permission.

+ *

+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR

+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE

+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,

+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,

+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ * ----------------------------------------------------------------------------

+ */

+

+//------------------------------------------------------------------------------

+//         Headers

+//------------------------------------------------------------------------------

+

+#include "aic.h"

+#include <board.h>

+

+//------------------------------------------------------------------------------

+//         Global functions

+//------------------------------------------------------------------------------

+

+//------------------------------------------------------------------------------

+/// Configures an interrupt in the AIC. The interrupt is identified by its

+/// source (AT91C_ID_xxx) and is configured to use the specified mode and

+/// interrupt handler function. Mode is the value that will be put in AIC_SMRx

+/// and the function address will be set in AIC_SVRx.

+/// The interrupt is disabled before configuration, so it is useless

+/// to do it before calling this function. When AIC_ConfigureIT returns, the

+/// interrupt will always be disabled and cleared; it must be enabled by a

+/// call to AIC_EnableIT().

+/// \param source  Interrupt source to configure.

+/// \param mode  Triggering mode and priority of the interrupt.

+/// \param handler  Interrupt handler function.

+//------------------------------------------------------------------------------

+void AIC_ConfigureIT(

+    unsigned int source,

+    unsigned int mode,

+    void (*handler)(void))

+{

+    // Disable the interrupt first

+    AT91C_BASE_AIC->AIC_IDCR = 1 << source;

+

+    // Configure mode and handler

+    AT91C_BASE_AIC->AIC_SMR[source] = mode;

+    AT91C_BASE_AIC->AIC_SVR[source] = (unsigned int) handler;

+

+    // Clear interrupt

+    AT91C_BASE_AIC->AIC_ICCR = 1 << source;

+}

+

+//------------------------------------------------------------------------------

+/// Enables interrupts coming from the given (unique) source (AT91C_ID_xxx).

+/// \param source  Interrupt source to enable.

+//------------------------------------------------------------------------------

+void AIC_EnableIT(unsigned int source)

+{

+    AT91C_BASE_AIC->AIC_IECR = 1 << source;

+}

+

+//------------------------------------------------------------------------------

+/// Disables interrupts coming from the given (unique) source (AT91C_ID_xxx).

+/// \param source  Interrupt source to enable.

+//------------------------------------------------------------------------------

+void AIC_DisableIT(unsigned int source)

+{

+    AT91C_BASE_AIC->AIC_IDCR = 1 << source;

+}

+

diff --git a/at91lib/peripherals/aic/aic.h b/at91lib/peripherals/aic/aic.h
new file mode 100644
index 0000000..bddf787
--- /dev/null
+++ b/at91lib/peripherals/aic/aic.h
@@ -0,0 +1,79 @@
+/* ----------------------------------------------------------------------------

+ *         ATMEL Microcontroller Software Support 

+ * ----------------------------------------------------------------------------

+ * Copyright (c) 2008, Atmel Corporation

+ *

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions are met:

+ *

+ * - Redistributions of source code must retain the above copyright notice,

+ * this list of conditions and the disclaimer below.

+ *

+ * Atmel's name may not be used to endorse or promote products derived from

+ * this software without specific prior written permission.

+ *

+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR

+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE

+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,

+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,

+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ * ----------------------------------------------------------------------------

+ */

+

+//------------------------------------------------------------------------------

+/// \unit

+///

+/// !Purpose

+/// 

+/// Methods and definitions for configuring interrupts using the Advanced

+/// Interrupt Controller (AIC).

+/// 

+/// !Usage

+///

+/// -# Configure an interrupt source using AIC_ConfigureIT

+/// -# Enable or disable interrupt generation of a particular source with

+///    AIC_EnableIT and AIC_DisableIT.

+///

+/// \note Most of the time, peripheral interrupts must be also configured

+/// inside the peripheral itself.

+//------------------------------------------------------------------------------

+

+#ifndef AIC_H

+#define AIC_H

+

+//------------------------------------------------------------------------------

+//         Headers

+//------------------------------------------------------------------------------

+

+#include <board.h>

+

+//------------------------------------------------------------------------------

+//         Definitions

+//------------------------------------------------------------------------------

+

+#ifndef AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL

+    /// Interrupt is internal and uses a logical 1 level.

+    #define AT91C_AIC_SRCTYPE_INT_HIGH_LEVEL AT91C_AIC_SRCTYPE_INT_LEVEL_SENSITIVE

+#endif

+

+//------------------------------------------------------------------------------

+//         Global functions

+//------------------------------------------------------------------------------

+

+extern void AIC_ConfigureIT(unsigned int source,

+                                   unsigned int mode,

+                                   void (*handler)( void ));

+

+extern void AIC_EnableIT(unsigned int source);

+

+extern void AIC_DisableIT(unsigned int source);

+

+#endif //#ifndef AIC_H

+