initial import of the usb ccid example for the sam7s

2 files changed, 248 insertions, 0 deletions

diff --git a/at91lib/peripherals/pmc/pmc.c b/at91lib/peripherals/pmc/pmc.c
new file mode 100644
index 0000000..136e401
--- /dev/null
+++ b/at91lib/peripherals/pmc/pmc.c
@@ -0,0 +1,186 @@
+/* ----------------------------------------------------------------------------

+ *         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 "pmc.h"

+#include <board.h>

+#include <utility/assert.h>

+#include <utility/trace.h>

+

+#ifdef CP15_PRESENT

+#include <cp15/cp15.h>

+#endif

+

+#define MASK_STATUS 0x3FFFFFFC

+

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

+//         Global functions

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

+

+#if defined(at91sam7l64) || defined(at91sam7l128)

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

+/// Sets the fast wake-up inputs that can get the device out of Wait mode.

+/// \param inputs  Fast wake-up inputs to enable.

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

+void PMC_SetFastWakeUpInputs(unsigned int inputs)

+{

+    SANITY_CHECK((inputs & ~0xFF) == 0);

+    AT91C_BASE_PMC->PMC_FSMR = inputs;

+}

+

+#if !defined(__ICCARM__)

+__attribute__ ((section (".ramfunc"))) // GCC

+#endif

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

+/// Disables the main oscillator, making the device enter Wait mode.

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

+void PMC_DisableMainOscillatorForWaitMode(void)

+{

+    AT91C_BASE_PMC->PMC_MOR = 0x37 << 16;

+    while ((AT91C_BASE_PMC->PMC_MOR & AT91C_PMC_MAINSELS) != AT91C_PMC_MAINSELS);

+}

+

+#endif

+

+#if defined(at91sam7l)

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

+/// Disables the main oscillator when NOT running on it.

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

+void PMC_DisableMainOscillator(void)

+{

+    AT91C_BASE_PMC->PMC_MOR = 0x37 << 16;

+    while ((AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MAINSELS) == AT91C_PMC_MAINSELS);

+}

+#endif

+

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

+/// Disables the processor clock

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

+void PMC_DisableProcessorClock(void)

+{    

+    AT91C_BASE_PMC->PMC_SCDR = AT91C_PMC_PCK;   

+    while ((AT91C_BASE_PMC->PMC_SCSR & AT91C_PMC_PCK) != AT91C_PMC_PCK); 

+}

+

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

+/// Enables the clock of a peripheral. The peripheral ID (AT91C_ID_xxx) is used

+/// to identify which peripheral is targetted.

+/// Note that the ID must NOT be shifted (i.e. 1 << AT91C_ID_xxx).

+/// \param id  Peripheral ID (AT91C_ID_xxx).

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

+void PMC_EnablePeripheral(unsigned int id)

+{

+    SANITY_CHECK(id < 32);

+

+    if ((AT91C_BASE_PMC->PMC_PCSR & (1 << id)) == (1 << id)) {

+

+        TRACE_INFO("PMC_EnablePeripheral: clock of peripheral"

+                   " %u is already enabled\n\r",

+                   id);

+    }

+    else {

+

+        AT91C_BASE_PMC->PMC_PCER = 1 << id;

+    }

+}

+

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

+/// Disables the clock of a peripheral. The peripheral ID (AT91C_ID_xxx) is used

+/// to identify which peripheral is targetted.

+/// Note that the ID must NOT be shifted (i.e. 1 << AT91C_ID_xxx).

+/// \param id  Peripheral ID (AT91C_ID_xxx).

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

+void PMC_DisablePeripheral(unsigned int id)

+{

+    SANITY_CHECK(id < 32);

+

+    if ((AT91C_BASE_PMC->PMC_PCSR & (1 << id)) != (1 << id)) {

+

+        TRACE_INFO("PMC_DisablePeripheral: clock of peripheral"

+                   " %u is not enabled\n\r",

+                   id);

+    }

+    else {

+

+        AT91C_BASE_PMC->PMC_PCDR = 1 << id;

+    }

+}

+

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

+/// Enable all the periph clock via PMC

+/// (Becareful of the last 2 bits, it is not periph clock)

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

+void PMC_EnableAllPeripherals(void)

+{

+    AT91C_BASE_PMC->PMC_PCER = MASK_STATUS;

+    while( (AT91C_BASE_PMC->PMC_PCSR & MASK_STATUS) != MASK_STATUS);

+    TRACE_INFO("Enable all periph clocks\n\r"); 

+}

+

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

+/// Disable all the periph clock via PMC

+/// (Becareful of the last 2 bits, it is not periph clock)

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

+void PMC_DisableAllPeripherals(void)

+{

+    AT91C_BASE_PMC->PMC_PCDR = MASK_STATUS;

+    while((AT91C_BASE_PMC->PMC_PCSR & MASK_STATUS) != 0);

+    TRACE_INFO("Disable all periph clocks\n\r");

+}

+

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

+/// Get Periph Status

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

+unsigned int PMC_IsAllPeriphEnabled(void)

+{

+    return (AT91C_BASE_PMC->PMC_PCSR == MASK_STATUS);

+}

+

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

+/// Get Periph Status

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

+unsigned int PMC_IsPeriphEnabled(unsigned int id)

+{

+    return (AT91C_BASE_PMC->PMC_PCSR & (1 << id));  

+}

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

+/// Put the CPU in Idle Mode for lower consumption

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

+void PMC_CPUInIdleMode(void)

+{

+    PMC_DisableProcessorClock();

+#ifdef CP15_PRESENT

+    _waitForInterrupt();

+#endif

+}

+

+

diff --git a/at91lib/peripherals/pmc/pmc.h b/at91lib/peripherals/pmc/pmc.h
new file mode 100644
index 0000000..a53b365
--- /dev/null
+++ b/at91lib/peripherals/pmc/pmc.h
@@ -0,0 +1,62 @@
+/* ----------------------------------------------------------------------------

+ *         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.

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

+ */

+

+#ifndef PMC_H

+#define PMC_H

+

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

+//         Global functions

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

+

+#if defined(at91sam7l64) || defined(at91sam7l128)

+extern void PMC_SetFastWakeUpInputs(unsigned int inputs);

+extern void PMC_DisableMainOscillator(void);

+extern

+#ifdef __ICCARM__

+__ramfunc

+#endif //__ICCARM__

+void PMC_DisableMainOscillatorForWaitMode(void);

+#endif // at91sam7l64 at91sam7l128

+

+extern void PMC_DisableProcessorClock(void);

+extern void PMC_EnablePeripheral(unsigned int id);

+extern void PMC_DisablePeripheral(unsigned int id);

+extern void PMC_CPUInIdleMode(void);

+

+

+extern void PMC_EnableAllPeripherals(void);

+

+extern void PMC_DisableAllPeripherals(void);

+

+extern unsigned int PMC_IsAllPeriphEnabled(void);

+

+extern unsigned int PMC_IsPeriphEnabled(unsigned int id);

+

+#endif //#ifndef PMC_H

+