diff options
| author | Harald Welte <laforge@gnumonks.org> | 2011-07-04 20:52:54 +0200 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2011-07-04 20:52:54 +0200 |
| commit | 044ad7c3987460ede48ff27afd6bdb0ca05a0432 (patch) | |
| tree | 924818cdb0d39ca08aec540d18da7bd406eaae8c /peripherals/pwmc | |
import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v1501120100901_softpack_1_9_v_1_0_svn_v15011
it's sad to see that atmel doesn't publish their svn repo or has
a centralized location or even puts proper version/release info
into the library itself
Diffstat (limited to 'peripherals/pwmc')
| -rw-r--r-- | peripherals/pwmc/pwmc.c | 245 | ||||
| -rw-r--r-- | peripherals/pwmc/pwmc.dir | 35 | ||||
| -rw-r--r-- | peripherals/pwmc/pwmc.h | 83 | ||||
| -rw-r--r-- | peripherals/pwmc/pwmc2.c | 589 | ||||
| -rw-r--r-- | peripherals/pwmc/pwmc2.h | 143 |
5 files changed, 1095 insertions, 0 deletions
diff --git a/peripherals/pwmc/pwmc.c b/peripherals/pwmc/pwmc.c new file mode 100644 index 0000000..98ca5cf --- /dev/null +++ b/peripherals/pwmc/pwmc.c @@ -0,0 +1,245 @@ +/* ----------------------------------------------------------------------------
+ * 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 "pwmc.h"
+#include <board.h>
+#include <utility/assert.h>
+#include <utility/trace.h>
+
+//------------------------------------------------------------------------------
+// Local functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Finds a prescaler/divisor couple to generate the desired frequency from
+/// MCK.
+/// Returns the value to enter in PWMC_MR or 0 if the configuration cannot be
+/// met.
+/// \param frequency Desired frequency in Hz.
+/// \param mck Master clock frequency in Hz.
+//------------------------------------------------------------------------------
+static unsigned short FindClockConfiguration(
+ unsigned int frequency,
+ unsigned int mck)
+{
+ unsigned int divisors[11] = {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024};
+ unsigned char divisor = 0;
+ unsigned int prescaler;
+
+ SANITY_CHECK(frequency < mck);
+
+ // Find prescaler and divisor values
+ prescaler = (mck / divisors[divisor]) / frequency;
+ while ((prescaler > 255) && (divisor < 11)) {
+
+ divisor++;
+ prescaler = (mck / divisors[divisor]) / frequency;
+ }
+
+ // Return result
+ if (divisor < 11) {
+
+ TRACE_DEBUG("Found divisor=%u and prescaler=%u for freq=%uHz\n\r",
+ divisors[divisor], prescaler, frequency);
+ return prescaler | (divisor << 8);
+ }
+ else {
+
+ return 0;
+ }
+}
+
+//------------------------------------------------------------------------------
+// Global functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Configures PWM a channel with the given parameters.
+/// The PWM controller must have been clocked in the PMC prior to calling this
+/// function.
+/// Beware: this function disables the channel. It waits until disable is effective.
+/// \param channel Channel number.
+/// \param prescaler Channel prescaler.
+/// \param alignment Channel alignment.
+/// \param polarity Channel polarity.
+//------------------------------------------------------------------------------
+void PWMC_ConfigureChannel(
+ unsigned char channel,
+ unsigned int prescaler,
+ unsigned int alignment,
+ unsigned int polarity)
+{
+ SANITY_CHECK(prescaler < AT91C_PWMC_CPRE_MCKB);
+ SANITY_CHECK((alignment & ~AT91C_PWMC_CALG) == 0);
+ SANITY_CHECK((polarity & ~AT91C_PWMC_CPOL) == 0);
+
+ // Disable channel (effective at the end of the current period)
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0) {
+ AT91C_BASE_PWMC->PWMC_DIS = 1 << channel;
+ while ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0);
+ }
+
+ // Configure channel
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CMR = prescaler | alignment | polarity;
+}
+
+//------------------------------------------------------------------------------
+/// Configures PWM clocks A & B to run at the given frequencies. This function
+/// finds the best MCK divisor and prescaler values automatically.
+/// \param clka Desired clock A frequency (0 if not used).
+/// \param clkb Desired clock B frequency (0 if not used).
+/// \param mck Master clock frequency.
+//------------------------------------------------------------------------------
+void PWMC_ConfigureClocks(unsigned int clka, unsigned int clkb, unsigned int mck)
+{
+ unsigned int mode = 0;
+ unsigned int result;
+
+ // Clock A
+ if (clka != 0) {
+
+ result = FindClockConfiguration(clka, mck);
+ ASSERT(result != 0, "-F- Could not generate the desired PWM frequency (%uHz)\n\r", clka);
+ mode |= result;
+ }
+
+ // Clock B
+ if (clkb != 0) {
+
+ result = FindClockConfiguration(clkb, mck);
+ ASSERT(result != 0, "-F- Could not generate the desired PWM frequency (%uHz)\n\r", clkb);
+ mode |= (result << 16);
+ }
+
+ // Configure clocks
+ TRACE_DEBUG("Setting PWMC_MR = 0x%08X\n\r", mode);
+ AT91C_BASE_PWMC->PWMC_MR = mode;
+}
+
+//------------------------------------------------------------------------------
+/// Sets the period value used by a PWM channel. This function writes directly
+/// to the CPRD register if the channel is disabled; otherwise, it uses the
+/// update register CUPD.
+/// \param channel Channel number.
+/// \param period Period value.
+//------------------------------------------------------------------------------
+void PWMC_SetPeriod(unsigned char channel, unsigned short period)
+{
+ // If channel is disabled, write to CPRD
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) == 0) {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CPRDR = period;
+ }
+ // Otherwise use update register
+ else {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CMR |= AT91C_PWMC_CPD;
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CUPDR = period;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Sets the duty cycle used by a PWM channel. This function writes directly to
+/// the CDTY register if the channel is disabled; otherwise it uses the
+/// update register CUPD.
+/// Note that the duty cycle must always be inferior or equal to the channel
+/// period.
+/// \param channel Channel number.
+/// \param duty Duty cycle value.
+//------------------------------------------------------------------------------
+void PWMC_SetDutyCycle(unsigned char channel, unsigned short duty)
+{
+ SANITY_CHECK(duty <= AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CPRDR);
+
+ // SAM7S errata
+#if defined(at91sam7s16) || defined(at91sam7s161) || defined(at91sam7s32) \
+ || defined(at91sam7s321) || defined(at91sam7s64) || defined(at91sam7s128) \
+ || defined(at91sam7s256) || defined(at91sam7s512)
+ ASSERT(duty > 0, "-F- Duty cycle value 0 is not permitted on SAM7S chips.\n\r");
+ ASSERT((duty > 1) || (AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CMR & AT91C_PWMC_CALG),
+ "-F- Duty cycle value 1 is not permitted in left-aligned mode on SAM7S chips.\n\r");
+#endif
+
+ // If channel is disabled, write to CDTY
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) == 0) {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CDTYR = duty;
+ }
+ // Otherwise use update register
+ else {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CMR &= ~AT91C_PWMC_CPD;
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CUPDR = duty;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Enables the given PWM channel. This does NOT enable the corresponding pin;
+/// this must be done in the user code.
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_EnableChannel(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_ENA = 1 << channel;
+}
+
+//------------------------------------------------------------------------------
+/// Disables the given PWM channel.
+/// Beware, channel will be effectively disabled at the end of the current period.
+/// Application can check channel is disabled using the following wait loop:
+/// while ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0);
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_DisableChannel(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_DIS = 1 << channel;
+}
+
+//------------------------------------------------------------------------------
+/// Enables the period interrupt for the given PWM channel.
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_EnableChannelIt(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_IER = 1 << channel;
+}
+
+//------------------------------------------------------------------------------
+/// Disables the period interrupt for the given PWM channel.
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_DisableChannelIt(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_IDR = 1 << channel;
+}
+
diff --git a/peripherals/pwmc/pwmc.dir b/peripherals/pwmc/pwmc.dir new file mode 100644 index 0000000..a163809 --- /dev/null +++ b/peripherals/pwmc/pwmc.dir @@ -0,0 +1,35 @@ +/* ----------------------------------------------------------------------------
+ * 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.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \dir
+/// !!!Purpose
+///
+/// Contains the peripheral API for Pulse Width Modulation Controller (PWM).
+//------------------------------------------------------------------------------
diff --git a/peripherals/pwmc/pwmc.h b/peripherals/pwmc/pwmc.h new file mode 100644 index 0000000..fe2b440 --- /dev/null +++ b/peripherals/pwmc/pwmc.h @@ -0,0 +1,83 @@ +/* ----------------------------------------------------------------------------
+ * 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
+///
+/// Interface for configuration the Pulse Width Modulation Controller (PWM) peripheral.
+///
+/// !Usage
+///
+/// -# Configures PWM clocks A & B to run at the given frequencies using
+/// PWMC_ConfigureClocks().
+/// -# Configure PWMC channel using PWMC_ConfigureChannel(), PWMC_SetPeriod()
+/// and PWMC_SetDutyCycle().
+/// -# Enable & disable channel using PWMC_EnableChannel() and
+/// PWMC_DisableChannel().
+/// -# Enable & disable the period interrupt for the given PWM channel using
+/// PWMC_EnableChannelIt() and PWMC_DisableChannelIt().
+///
+/// Please refer to the list of functions in the #Overview# tab of this unit
+/// for more detailed information.
+//------------------------------------------------------------------------------
+
+#ifndef PWMC_H
+#define PWMC_H
+
+//------------------------------------------------------------------------------
+// Global functions
+//------------------------------------------------------------------------------
+
+extern void PWMC_ConfigureChannel(
+ unsigned char channel,
+ unsigned int prescaler,
+ unsigned int alignment,
+ unsigned int polarity);
+
+extern void PWMC_ConfigureClocks
+ (unsigned int clka,
+ unsigned int clkb,
+ unsigned int mck);
+
+extern void PWMC_SetPeriod(unsigned char channel, unsigned short period);
+
+extern void PWMC_SetDutyCycle(unsigned char channel, unsigned short duty);
+
+extern void PWMC_EnableChannel(unsigned char channel);
+
+extern void PWMC_DisableChannel(unsigned char channel);
+
+extern void PWMC_EnableChannelIt(unsigned char channel);
+
+extern void PWMC_DisableChannelIt(unsigned char channel);
+
+#endif //#ifndef PWMC_H
+
diff --git a/peripherals/pwmc/pwmc2.c b/peripherals/pwmc/pwmc2.c new file mode 100644 index 0000000..e225e73 --- /dev/null +++ b/peripherals/pwmc/pwmc2.c @@ -0,0 +1,589 @@ +/* ----------------------------------------------------------------------------
+ * 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 "pwmc2.h"
+#include <board.h>
+#include <utility/assert.h>
+#include <utility/trace.h>
+
+//------------------------------------------------------------------------------
+// Local functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Finds a prescaler/divisor couple to generate the desired frequency from
+/// MCK.
+/// Returns the value to enter in PWMC_MR or 0 if the configuration cannot be
+/// met.
+/// \param frequency Desired frequency in Hz.
+/// \param mck Master clock frequency in Hz.
+//------------------------------------------------------------------------------
+static unsigned short FindClockConfiguration(
+ unsigned int frequency,
+ unsigned int mck)
+{
+ unsigned int divisors[11] = {1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024};
+ unsigned char divisor = 0;
+ unsigned int prescaler;
+
+ SANITY_CHECK(frequency < mck);
+
+ // Find prescaler and divisor values
+ prescaler = (mck / divisors[divisor]) / frequency;
+ while ((prescaler > 255) && (divisor < 11)) {
+
+ divisor++;
+ prescaler = (mck / divisors[divisor]) / frequency;
+ }
+
+ // Return result
+ if (divisor < 11) {
+
+ TRACE_DEBUG("Found divisor=%u and prescaler=%u for freq=%uHz\n\r",
+ divisors[divisor], prescaler, frequency);
+ return prescaler | (divisor << 8);
+ }
+ else {
+
+ return 0;
+ }
+}
+
+//------------------------------------------------------------------------------
+// Global functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Configures PWM a channel with the given parameters, basic configure function.
+/// The PWM controller must have been clocked in the PMC prior to calling this
+/// function.
+/// Beware: this function disables the channel. It waits until disable is effective.
+/// \param channel Channel number.
+/// \param prescaler Channel prescaler.
+/// \param alignment Channel alignment.
+/// \param polarity Channel polarity.
+//------------------------------------------------------------------------------
+void PWMC_ConfigureChannel(
+ unsigned char channel,
+ unsigned int prescaler,
+ unsigned int alignment,
+ unsigned int polarity)
+{
+ SANITY_CHECK(prescaler < AT91C_PWMC_CPRE_MCKB);
+ SANITY_CHECK((alignment & ~AT91C_PWMC_CALG) == 0);
+ SANITY_CHECK((polarity & ~AT91C_PWMC_CPOL) == 0);
+
+ // Disable channel (effective at the end of the current period)
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0) {
+ AT91C_BASE_PWMC->PWMC_DIS = 1 << channel;
+ while ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0);
+ }
+
+ // Configure channel
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CMR = prescaler | alignment | polarity;
+}
+
+//------------------------------------------------------------------------------
+/// Configures PWM a channel with the given parameters, extend configure function.
+/// The PWM controller must have been clocked in the PMC prior to calling this
+/// function.
+/// Beware: this function disables the channel. It waits until disable is effective.
+/// \param channel Channel number.
+/// \param prescaler Channel prescaler.
+/// \param alignment Channel alignment.
+/// \param polarity Channel polarity.
+/// \param countEventSelect Channel counter event selection.
+/// \param DTEnable Channel dead time generator enable.
+/// \param DTHInverte Channel Dead-Time PWMHx output Inverted.
+/// \param DTLInverte Channel Dead-Time PWMHx output Inverted.
+//------------------------------------------------------------------------------
+void PWMC_ConfigureChannelExt(
+ unsigned char channel,
+ unsigned int prescaler,
+ unsigned int alignment,
+ unsigned int polarity,
+ unsigned int countEventSelect,
+ unsigned int DTEnable,
+ unsigned int DTHInverte,
+ unsigned int DTLInverte)
+{
+ SANITY_CHECK(prescaler < AT91C_PWMC_CPRE_MCKB);
+ SANITY_CHECK((alignment & ~AT91C_PWMC_CALG) == 0);
+ SANITY_CHECK((polarity & ~AT91C_PWMC_CPOL) == 0);
+ SANITY_CHECK((countEventSelect & ~AT91C_PWMC_CES) == 0);
+ SANITY_CHECK((DTEnable & ~AT91C_PWMC_DTE) == 0);
+ SANITY_CHECK((DTHInverte & ~AT91C_PWMC_DTHI) == 0);
+ SANITY_CHECK((DTLInverte & ~AT91C_PWMC_DTLI) == 0);
+
+ // Disable channel (effective at the end of the current period)
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0) {
+ AT91C_BASE_PWMC->PWMC_DIS = 1 << channel;
+ while ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0);
+ }
+
+ // Configure channel
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CMR = prescaler | alignment | polarity |
+ countEventSelect | DTEnable | DTHInverte | DTLInverte;
+}
+
+//------------------------------------------------------------------------------
+/// Configures PWM clocks A & B to run at the given frequencies. This function
+/// finds the best MCK divisor and prescaler values automatically.
+/// \param clka Desired clock A frequency (0 if not used).
+/// \param clkb Desired clock B frequency (0 if not used).
+/// \param mck Master clock frequency.
+//------------------------------------------------------------------------------
+void PWMC_ConfigureClocks(unsigned int clka, unsigned int clkb, unsigned int mck)
+{
+ unsigned int mode = 0;
+ unsigned int result;
+
+ // Clock A
+ if (clka != 0) {
+
+ result = FindClockConfiguration(clka, mck);
+ ASSERT(result != 0, "-F- Could not generate the desired PWM frequency (%uHz)\n\r", clka);
+ mode |= result;
+ }
+
+ // Clock B
+ if (clkb != 0) {
+
+ result = FindClockConfiguration(clkb, mck);
+ ASSERT(result != 0, "-F- Could not generate the desired PWM frequency (%uHz)\n\r", clkb);
+ mode |= (result << 16);
+ }
+
+ // Configure clocks
+ TRACE_DEBUG("Setting PWMC_MR = 0x%08X\n\r", mode);
+ AT91C_BASE_PWMC->PWMC_MR = mode;
+}
+
+//------------------------------------------------------------------------------
+/// Sets the period value used by a PWM channel. This function writes directly
+/// to the CPRD register if the channel is disabled; otherwise, it uses the
+/// update register CUPD.
+/// \param channel Channel number.
+/// \param period Period value.
+//------------------------------------------------------------------------------
+void PWMC_SetPeriod(unsigned char channel, unsigned short period)
+{
+ // If channel is disabled, write to CPRD
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) == 0) {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CPRDR = period;
+ }
+ // Otherwise use update register
+ else {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CPRDUPDR = period;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Sets the duty cycle used by a PWM channel. This function writes directly to
+/// the CDTY register if the channel is disabled; otherwise it uses the
+/// update register CUPD.
+/// Note that the duty cycle must always be inferior or equal to the channel
+/// period.
+/// \param channel Channel number.
+/// \param duty Duty cycle value.
+//------------------------------------------------------------------------------
+void PWMC_SetDutyCycle(unsigned char channel, unsigned short duty)
+{
+ SANITY_CHECK(duty <= AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CPRDR);
+
+ // SAM7S errata
+#if defined(at91sam7s16) || defined(at91sam7s161) || defined(at91sam7s32) \
+ || defined(at91sam7s321) || defined(at91sam7s64) || defined(at91sam7s128) \
+ || defined(at91sam7s256) || defined(at91sam7s512)
+ ASSERT(duty > 0, "-F- Duty cycle value 0 is not permitted on SAM7S chips.\n\r");
+ ASSERT((duty > 1) || (AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CMR & AT91C_PWMC_CALG),
+ "-F- Duty cycle value 1 is not permitted in left-aligned mode on SAM7S chips.\n\r");
+#endif
+
+ // If channel is disabled, write to CDTY
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) == 0) {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CDTYR = duty;
+ }
+ // Otherwise use update register
+ else {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CDTYUPDR = duty;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Sets the dead time used by a PWM channel. This function writes directly to
+/// the DTR register if the channel is disabled; otherwise it uses the
+/// update register DTUPDR.
+/// Note that the dead time must always be inferior or equal to the channel
+/// period.
+/// \param channel Channel number.
+/// \param timeH Dead time value for PWMHx output.
+/// \param timeL Dead time value for PWMLx output.
+//------------------------------------------------------------------------------
+void PWMC_SetDeadTime(unsigned char channel, unsigned short timeH, unsigned short timeL)
+{
+ SANITY_CHECK(timeH <= AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CPRDR);
+ SANITY_CHECK(timeL <= AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_CPRDR);
+
+ // If channel is disabled, write to DTR
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) == 0) {
+
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_DTR = timeH | (timeL << 16);
+ }
+ // Otherwise use update register
+ else {
+ AT91C_BASE_PWMC->PWMC_CH[channel].PWMC_DTUPDR = timeH | (timeL << 16);
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Configures Syncronous channel with the given parameters.
+/// Beware: At this time, the channels should be disabled.
+/// \param channels Bitwise OR of Syncronous channels.
+/// \param updateMode Syncronous channel update mode.
+/// \param requestMode PDC transfer request mode.
+/// \param requestComparisonSelect PDC transfer request comparison selection.
+//------------------------------------------------------------------------------
+void PWMC_ConfigureSyncChannel(
+ unsigned int channels,
+ unsigned int updateMode,
+ unsigned int requestMode,
+ unsigned int requestComparisonSelect)
+{
+ AT91C_BASE_PWMC->PWMC_SYNC = channels | updateMode | requestMode
+ | requestComparisonSelect;
+}
+
+//------------------------------------------------------------------------------
+/// Sets the update period of the synchronous channels.
+/// This function writes directly to
+/// the SCUP register if the channel #0 is disabled; otherwise it uses the
+/// update register SCUPUPD.
+/// \param period update period.
+//------------------------------------------------------------------------------
+void PWMC_SetSyncChannelUpdatePeriod(unsigned char period)
+{
+ // If channel is disabled, write to SCUP
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << 0)) == 0) {
+
+ AT91C_BASE_PWMC->PWMC_SCUP = period;
+ }
+ // Otherwise use update register
+ else {
+
+ AT91C_BASE_PWMC->PWMC_SCUPUPD = period;
+ }
+}
+
+//------------------------------------------------------------------------------
+/// Sets synchronous channels update unlock.
+/// Note: If the UPDM field is set to 0, writing the UPDULOCK bit to 1
+/// triggers the update of the period value, the duty-cycle and
+/// the dead-time values of synchronous channels at the beginning
+/// of the next PWM period. If the field UPDM is set to 1 or 2,
+/// writing the UPDULOCK bit to 1 triggers only the update of
+/// the period value and of the dead-time values of synchronous channels.
+/// This bit is automatically reset when the update is done.
+//------------------------------------------------------------------------------
+void PWMC_SetSyncChannelUpdateUnlock(void)
+{
+ AT91C_BASE_PWMC->PWMC_UPCR = AT91C_PWMC_UPDULOCK;
+}
+
+//------------------------------------------------------------------------------
+/// Enables the given PWM channel. This does NOT enable the corresponding pin;
+/// this must be done in the user code.
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_EnableChannel(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_ENA = 1 << channel;
+}
+
+//------------------------------------------------------------------------------
+/// Disables the given PWM channel.
+/// Beware, channel will be effectively disabled at the end of the current period.
+/// Application can check channel is disabled using the following wait loop:
+/// while ((AT91C_BASE_PWMC->PWMC_SR & (1 << channel)) != 0);
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_DisableChannel(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_DIS = 1 << channel;
+}
+
+//------------------------------------------------------------------------------
+/// Enables the period interrupt for the given PWM channel.
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_EnableChannelIt(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_IER1 = 1 << channel;
+}
+
+//------------------------------------------------------------------------------
+/// Disables the period interrupt for the given PWM channel.
+/// \param channel Channel number.
+//------------------------------------------------------------------------------
+void PWMC_DisableChannelIt(unsigned char channel)
+{
+ AT91C_BASE_PWMC->PWMC_IDR1 = 1 << channel;
+}
+
+//-----------------------------------------------------------------------------
+/// Enables the selected interrupts sources on a PWMC peripheral.
+/// \param sources1 Bitwise OR of selected interrupt sources of PWMC_IER1.
+/// \param sources2 Bitwise OR of selected interrupt sources of PWMC_IER2.
+//-----------------------------------------------------------------------------
+void PWMC_EnableIt(unsigned int sources1, unsigned int sources2)
+{
+ AT91C_BASE_PWMC->PWMC_IER1 = sources1;
+ AT91C_BASE_PWMC->PWMC_IER2 = sources2;
+}
+
+//-----------------------------------------------------------------------------
+/// Disables the selected interrupts sources on a PWMC peripheral.
+/// \param sources1 Bitwise OR of selected interrupt sources of PWMC_IDR1.
+/// \param sources2 Bitwise OR of selected interrupt sources of PWMC_IDR2.
+//-----------------------------------------------------------------------------
+void PWMC_DisableIt(unsigned int sources1, unsigned int sources2)
+{
+ AT91C_BASE_PWMC->PWMC_IDR1 = sources1;
+ AT91C_BASE_PWMC->PWMC_IDR2 = sources2;
+}
+
+//------------------------------------------------------------------------------
+/// Sends the contents of buffer through a PWMC peripheral, using the PDC to
+/// take care of the transfer.
+/// Note: Duty cycle of syncronous channels can update by PDC
+/// when the field UPDM (Update Mode) in the PWM_SCM register is set to 2.
+/// \param pwmc Pointer to an AT91S_PWMC instance.
+/// \param buffer Data buffer to send.
+/// \param length Length of the data buffer.
+//------------------------------------------------------------------------------
+unsigned char PWMC_WriteBuffer(AT91S_PWMC *pwmc,
+ void *buffer,
+ unsigned int length)
+{
+ // Check if first bank is free
+ if (pwmc->PWMC_TCR == 0) {
+
+ pwmc->PWMC_TPR = (unsigned int) buffer;
+ pwmc->PWMC_TCR = length;
+ pwmc->PWMC_PTCR = AT91C_PDC_TXTEN;
+ return 1;
+ }
+ // Check if second bank is free
+ else if (pwmc->PWMC_TNCR == 0) {
+
+ pwmc->PWMC_TNPR = (unsigned int) buffer;
+ pwmc->PWMC_TNCR = length;
+ return 1;
+ }
+
+ // No free banks
+ return 0;
+}
+
+//-----------------------------------------------------------------------------
+/// Set PWM output override value
+/// \param value Bitwise OR of output override value.
+//-----------------------------------------------------------------------------
+void PWMC_SetOverrideValue(unsigned int value)
+{
+ AT91C_BASE_PWMC->PWMC_OOV = value;
+}
+
+//-----------------------------------------------------------------------------
+/// Enalbe override output.
+/// \param value Bitwise OR of output selection.
+/// \param sync 0: enable the output asyncronously, 1: enable it syncronously
+//-----------------------------------------------------------------------------
+void PWMC_EnableOverrideOutput(unsigned int value, unsigned int sync)
+{
+ if (sync) {
+
+ AT91C_BASE_PWMC->PWMC_OSSUPD = value;
+ } else {
+
+ AT91C_BASE_PWMC->PWMC_OSS = value;
+ }
+}
+
+//-----------------------------------------------------------------------------
+/// Disalbe override output.
+/// \param value Bitwise OR of output selection.
+/// \param sync 0: enable the output asyncronously, 1: enable it syncronously
+//-----------------------------------------------------------------------------
+void PWMC_DisableOverrideOutput(unsigned int value, unsigned int sync)
+{
+ if (sync) {
+
+ AT91C_BASE_PWMC->PWMC_OSCUPD = value;
+ } else {
+
+ AT91C_BASE_PWMC->PWMC_OSC = value;
+ }
+}
+
+//-----------------------------------------------------------------------------
+/// Set PWM fault mode.
+/// \param mode Bitwise OR of fault mode.
+//-----------------------------------------------------------------------------
+void PWMC_SetFaultMode(unsigned int mode)
+{
+ AT91C_BASE_PWMC->PWMC_FMR = mode;
+}
+
+//-----------------------------------------------------------------------------
+/// PWM fault clear.
+/// \param fault Bitwise OR of fault to clear.
+//-----------------------------------------------------------------------------
+void PWMC_FaultClear(unsigned int fault)
+{
+ AT91C_BASE_PWMC->PWMC_FCR = fault;
+}
+
+//-----------------------------------------------------------------------------
+/// Set PWM fault protection value.
+/// \param value Bitwise OR of fault protection value.
+//-----------------------------------------------------------------------------
+void PWMC_SetFaultProtectionValue(unsigned int value)
+{
+ AT91C_BASE_PWMC->PWMC_FPV = value;
+}
+
+//-----------------------------------------------------------------------------
+/// Enable PWM fault protection.
+/// \param value Bitwise OR of FPEx[y].
+//-----------------------------------------------------------------------------
+void PWMC_EnableFaultProtection(unsigned int value)
+{
+ AT91C_BASE_PWMC->PWMC_FPER1 = value;
+}
+
+//-----------------------------------------------------------------------------
+/// Configure comparison unit.
+/// \param x comparison x index
+/// \param value comparison x value.
+/// \param mode comparison x mode
+//-----------------------------------------------------------------------------
+void PWMC_ConfigureComparisonUnit(unsigned int x, unsigned int value, unsigned int mode)
+{
+ // If channel is disabled, write to CMPxM & CMPxV
+ if ((AT91C_BASE_PWMC->PWMC_SR & (1 << 0)) == 0) {
+ if (x == 0) {
+ AT91C_BASE_PWMC->PWMC_CMP0M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP0V = value;
+ } else if (x == 1) {
+ AT91C_BASE_PWMC->PWMC_CMP1M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP1V = value;
+ } else if (x == 2) {
+ AT91C_BASE_PWMC->PWMC_CMP2M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP2V = value;
+ } else if (x == 3) {
+ AT91C_BASE_PWMC->PWMC_CMP3M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP3V = value;
+ } else if (x == 4) {
+ AT91C_BASE_PWMC->PWMC_CMP4M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP4V = value;
+ } else if (x == 5) {
+ AT91C_BASE_PWMC->PWMC_CMP5M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP5V = value;
+ } else if (x == 6) {
+ AT91C_BASE_PWMC->PWMC_CMP6M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP6V = value;
+ } else if (x == 7) {
+ AT91C_BASE_PWMC->PWMC_CMP7M = mode;
+ AT91C_BASE_PWMC->PWMC_CMP7V = value;
+ }
+ }
+ // Otherwise use update register
+ else {
+ if (x == 0) {
+ AT91C_BASE_PWMC->PWMC_CMP0MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP0VUPD = value;
+ } else if (x == 1) {
+ AT91C_BASE_PWMC->PWMC_CMP1MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP1VUPD = value;
+ } else if (x == 2) {
+ AT91C_BASE_PWMC->PWMC_CMP2MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP2VUPD = value;
+ } else if (x == 3) {
+ AT91C_BASE_PWMC->PWMC_CMP3MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP3VUPD = value;
+ } else if (x == 4) {
+ AT91C_BASE_PWMC->PWMC_CMP4MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP4VUPD = value;
+ } else if (x == 5) {
+ AT91C_BASE_PWMC->PWMC_CMP5MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP5VUPD = value;
+ } else if (x == 6) {
+ AT91C_BASE_PWMC->PWMC_CMP6MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP6VUPD = value;
+ } else if (x == 7) {
+ AT91C_BASE_PWMC->PWMC_CMP7MUPD = mode;
+ AT91C_BASE_PWMC->PWMC_CMP7VUPD = value;
+ }
+ }
+}
+
+//-----------------------------------------------------------------------------
+/// Configure event line mode.
+/// \param x Line x
+/// \param mode Bitwise OR of line mode selection
+//-----------------------------------------------------------------------------
+void PWMC_ConfigureEventLineMode(unsigned int x, unsigned int mode)
+{
+ if (x == 0) {
+ AT91C_BASE_PWMC->PWMC_EL0MR = mode;
+ } else if (x == 1) {
+ AT91C_BASE_PWMC->PWMC_EL1MR = mode;
+ } else if (x == 2) {
+ AT91C_BASE_PWMC->PWMC_EL2MR = mode;
+ } else if (x == 3) {
+ AT91C_BASE_PWMC->PWMC_EL3MR = mode;
+ } else if (x == 4) {
+ AT91C_BASE_PWMC->PWMC_EL4MR = mode;
+ } else if (x == 5) {
+ AT91C_BASE_PWMC->PWMC_EL5MR = mode;
+ } else if (x == 6) {
+ AT91C_BASE_PWMC->PWMC_EL6MR = mode;
+ } else if (x == 7) {
+ AT91C_BASE_PWMC->PWMC_EL7MR = mode;
+ }
+}
diff --git a/peripherals/pwmc/pwmc2.h b/peripherals/pwmc/pwmc2.h new file mode 100644 index 0000000..d9d979d --- /dev/null +++ b/peripherals/pwmc/pwmc2.h @@ -0,0 +1,143 @@ +/* ----------------------------------------------------------------------------
+ * 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
+///
+/// Interface for configuration the Pulse Width Modulation Controller (PWM) peripheral.
+///
+/// !Usage
+///
+/// -# Configures PWM clocks A & B to run at the given frequencies using
+/// PWMC_ConfigureClocks().
+/// -# Configure PWMC channel using PWMC_ConfigureChannel(), PWMC_ConfigureChannelExt()
+/// PWMC_SetPeriod(), PWMC_SetDutyCycle() and PWMC_SetDeadTime().
+/// -# Enable & disable channel using PWMC_EnableChannel() and
+/// PWMC_DisableChannel().
+/// -# Enable & disable the period interrupt for the given PWM channel using
+/// PWMC_EnableChannelIt() and PWMC_DisableChannelIt().
+/// -# Enable & disable the selected interrupts sources on a PWMC peripheral
+/// using PWMC_EnableIt() and PWMC_DisableIt().
+/// -# Control syncronous channel using PWMC_ConfigureSyncChannel(),
+/// PWMC_SetSyncChannelUpdatePeriod() and PWMC_SetSyncChannelUpdateUnlock().
+/// -# Control PWM override output using PWMC_SetOverrideValue(),
+/// PWMC_EnableOverrideOutput() and PWMC_DisableOverrideOutput().
+/// -# Send data through the transmitter using PWMC_WriteBuffer().
+///
+/// Please refer to the list of functions in the #Overview# tab of this unit
+/// for more detailed information.
+//------------------------------------------------------------------------------
+
+#ifndef PWMC2_H
+#define PWMC2_H
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include <board.h>
+
+//------------------------------------------------------------------------------
+// Global functions
+//------------------------------------------------------------------------------
+
+extern void PWMC_ConfigureChannel(
+ unsigned char channel,
+ unsigned int prescaler,
+ unsigned int alignment,
+ unsigned int polarity);
+
+extern void PWMC_ConfigureChannelExt(
+ unsigned char channel,
+ unsigned int prescaler,
+ unsigned int alignment,
+ unsigned int polarity,
+ unsigned int countEventSelect,
+ unsigned int DTEnable,
+ unsigned int DTHInverte,
+ unsigned int DTLInverte);
+
+extern void PWMC_ConfigureClocks
+ (unsigned int clka,
+ unsigned int clkb,
+ unsigned int mck);
+
+extern void PWMC_SetPeriod(unsigned char channel, unsigned short period);
+
+extern void PWMC_SetDutyCycle(unsigned char channel, unsigned short duty);
+
+extern void PWMC_SetDeadTime(unsigned char channel, unsigned short timeH, unsigned short timeL);
+
+extern void PWMC_ConfigureSyncChannel(
+ unsigned int channels,
+ unsigned int updateMode,
+ unsigned int requestMode,
+ unsigned int requestComparisonSelect);
+
+extern void PWMC_SetSyncChannelUpdatePeriod(unsigned char period);
+
+extern void PWMC_SetSyncChannelUpdateUnlock(void);
+
+extern void PWMC_EnableChannel(unsigned char channel);
+
+extern void PWMC_DisableChannel(unsigned char channel);
+
+extern void PWMC_EnableChannelIt(unsigned char channel);
+
+extern void PWMC_DisableChannelIt(unsigned char channel);
+
+extern void PWMC_EnableIt(unsigned int sources1, unsigned int sources2);
+
+extern void PWMC_DisableIt(unsigned int sources1, unsigned int sources2);
+
+extern unsigned char PWMC_WriteBuffer(AT91S_PWMC *pwmc,
+ void *buffer,
+ unsigned int length);
+
+extern void PWMC_SetOverrideValue(unsigned int value);
+
+extern void PWMC_EnableOverrideOutput(unsigned int value, unsigned int sync);
+
+extern void PWMC_DisableOverrideOutput(unsigned int value, unsigned int sync);
+
+extern void PWMC_SetFaultMode(unsigned int mode);
+
+extern void PWMC_FaultClear(unsigned int fault);
+
+extern void PWMC_SetFaultProtectionValue(unsigned int value);
+
+extern void PWMC_EnableFaultProtection(unsigned int value);
+
+extern void PWMC_ConfigureComparisonUnit(unsigned int x, unsigned int value, unsigned int mode);
+
+extern void PWMC_ConfigureEventLineMode(unsigned int x, unsigned int mode);
+#endif //#ifndef PWMC2_H
+
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