diff options
Diffstat (limited to 'peripherals/supc/supc.c')
| -rw-r--r-- | peripherals/supc/supc.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/peripherals/supc/supc.c b/peripherals/supc/supc.c new file mode 100644 index 0000000..b63194c --- /dev/null +++ b/peripherals/supc/supc.c @@ -0,0 +1,223 @@ +/* ----------------------------------------------------------------------------
+ * 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 "supc.h"
+#include <board.h>
+#include <utility/assert.h>
+
+//------------------------------------------------------------------------------
+// Local definitions
+//------------------------------------------------------------------------------
+
+/// Key value for the SUPC_MR register.
+#define SUPC_KEY ((unsigned int) (0xA5 << 24))
+
+//------------------------------------------------------------------------------
+// Global functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Enables the SLCD power supply.
+/// \param internal If 1, the power supply is configured as internal; otherwise
+/// it is set at external.
+//------------------------------------------------------------------------------
+void SUPC_EnableSlcd(unsigned char internal)
+{
+ if (internal) {
+
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_LCDMODE) | AT91C_SUPC_LCDMODE_INTERNAL;
+ }
+ else {
+
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_LCDMODE) | AT91C_SUPC_LCDMODE_EXTERNAL;
+ }
+ while ((AT91C_BASE_SUPC->SUPC_SR & AT91C_SUPC_LCDS) != AT91C_SUPC_LCDS);
+}
+
+//------------------------------------------------------------------------------
+/// Disables the SLCD power supply.
+//------------------------------------------------------------------------------
+void SUPC_DisableSlcd(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_LCDMODE);
+ while ((AT91C_BASE_SUPC->SUPC_SR & AT91C_SUPC_LCDS) == AT91C_SUPC_LCDS);
+}
+
+//------------------------------------------------------------------------------
+/// Sets the output voltage of the SLCD charge pump.
+/// \param voltage Output voltage.
+//------------------------------------------------------------------------------
+void SUPC_SetSlcdVoltage(unsigned int voltage)
+{
+ SANITY_CHECK((voltage & ~AT91C_SUPC_LCDOUT) == 0);
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_LCDOUT) | voltage;
+}
+
+#if !defined(__ICCARM__)
+__attribute__ ((section (".ramfunc"))) // GCC
+#endif
+//------------------------------------------------------------------------------
+/// Enables the flash power supply with the given wake-up setting.
+/// \param time Wake-up time.
+//------------------------------------------------------------------------------
+void SUPC_EnableFlash(unsigned int time)
+{
+ AT91C_BASE_SUPC->SUPC_FWUTR = time;
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | AT91C_BASE_SUPC->SUPC_MR | AT91C_SUPC_FLASHON;
+ while ((AT91C_BASE_SUPC->SUPC_SR & AT91C_SUPC_FLASHS) != AT91C_SUPC_FLASHS);
+}
+
+#if !defined(__ICCARM__)
+__attribute__ ((section (".ramfunc"))) // GCC
+#endif
+//------------------------------------------------------------------------------
+/// Disables the flash power supply.
+//------------------------------------------------------------------------------
+void SUPC_DisableFlash(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_FLASHON);
+ while ((AT91C_BASE_SUPC->SUPC_SR & AT91C_SUPC_FLASHS) == AT91C_SUPC_FLASHS);
+}
+
+//------------------------------------------------------------------------------
+/// Sets the voltage regulator output voltage.
+/// \param voltage Voltage to set.
+//------------------------------------------------------------------------------
+void SUPC_SetVoltageOutput(unsigned int voltage)
+{
+ SANITY_CHECK((voltage & ~AT91C_SUPC_VRVDD) == 0);
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_VRVDD) | voltage;
+}
+
+//------------------------------------------------------------------------------
+/// Puts the voltage regulator in deep mode.
+//------------------------------------------------------------------------------
+void SUPC_EnableDeepMode(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | AT91C_BASE_SUPC->SUPC_MR | AT91C_SUPC_VRDEEP;
+}
+
+//------------------------------------------------------------------------------
+/// Puts the voltage regulator in normal mode.
+//------------------------------------------------------------------------------
+void SUPC_DisableDeepMode(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_VRDEEP);
+}
+
+//-----------------------------------------------------------------------------
+/// Enables the backup SRAM power supply, so its data is saved while the device
+/// is in backup mode.
+//-----------------------------------------------------------------------------
+void SUPC_EnableSram(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | AT91C_BASE_SUPC->SUPC_MR | AT91C_SUPC_SRAMON;
+}
+
+//-----------------------------------------------------------------------------
+/// Disables the backup SRAM power supply.
+//-----------------------------------------------------------------------------
+void SUPC_DisableSram(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_SRAMON);
+}
+
+//-----------------------------------------------------------------------------
+/// Enables the RTC power supply.
+//-----------------------------------------------------------------------------
+void SUPC_EnableRtc(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | AT91C_BASE_SUPC->SUPC_MR | AT91C_SUPC_RTCON;
+ while ((AT91C_BASE_SUPC->SUPC_SR & AT91C_SUPC_RTS) != AT91C_SUPC_RTS);
+}
+
+//-----------------------------------------------------------------------------
+/// Disables the RTC power supply.
+//-----------------------------------------------------------------------------
+void SUPC_DisableRtc(void)
+{
+ AT91C_BASE_SUPC->SUPC_MR = SUPC_KEY | (AT91C_BASE_SUPC->SUPC_MR & ~AT91C_SUPC_RTCON);
+ while ((AT91C_BASE_SUPC->SUPC_SR & AT91C_SUPC_RTS) == AT91C_SUPC_RTS);
+}
+
+//-----------------------------------------------------------------------------
+/// Sets the BOD sampling mode (or disables it).
+/// \param mode BOD sampling mode.
+//-----------------------------------------------------------------------------
+void SUPC_SetBodSampling(unsigned int mode)
+{
+ SANITY_CHECK((mode & ~AT91C_SUPC_BODSMPL) == 0);
+ AT91C_BASE_SUPC->SUPC_BOMR &= ~AT91C_SUPC_BODSMPL;
+ AT91C_BASE_SUPC->SUPC_BOMR |= mode;
+}
+
+//------------------------------------------------------------------------------
+/// Disables the voltage regulator, which makes the device enter backup mode.
+//------------------------------------------------------------------------------
+void SUPC_DisableVoltageRegulator(void)
+{
+ AT91C_BASE_SUPC->SUPC_CR = SUPC_KEY | AT91C_SUPC_VROFF;
+ while (1);
+}
+
+//------------------------------------------------------------------------------
+/// Shuts the device down so it enters Off mode.
+//------------------------------------------------------------------------------
+void SUPC_Shutdown(void)
+{
+ AT91C_BASE_SUPC->SUPC_CR = SUPC_KEY | AT91C_SUPC_SHDW;
+ while (1);
+}
+
+//------------------------------------------------------------------------------
+/// Sets the wake-up sources when in backup mode.
+/// \param sources Wake-up sources to enable.
+//------------------------------------------------------------------------------
+void SUPC_SetWakeUpSources(unsigned int sources)
+{
+ SANITY_CHECK((sources & ~0x0000000B) == 0);
+ AT91C_BASE_SUPC->SUPC_WUMR &= ~0x0000000B;
+ AT91C_BASE_SUPC->SUPC_WUMR |= sources;
+}
+
+//------------------------------------------------------------------------------
+/// Sets the wake-up inputs when in backup mode.
+/// \param inputs Wake up inputs to enable.
+//------------------------------------------------------------------------------
+void SUPC_SetWakeUpInputs(unsigned int inputs)
+{
+ SANITY_CHECK((inputs & ~0xFFFF) == 0);
+ AT91C_BASE_SUPC->SUPC_WUIR &= ~0xFFFF;
+ AT91C_BASE_SUPC->SUPC_WUIR |= inputs;
+}
+
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