Merged upstream arduino branch

1 files changed, 213 insertions, 0 deletions

diff --git a/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/RTC/rtc.c b/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/RTC/rtc.c
new file mode 100644
index 0000000..4cbae0f
--- /dev/null
+++ b/firmwares/wifishield/wifiHD/src/SOFTWARE_FRAMEWORK/DRIVERS/RTC/rtc.c
@@ -0,0 +1,213 @@
+/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
+
+/*This file is prepared for Doxygen automatic documentation generation.*/
+/*! \file *********************************************************************
+ *
+ * \brief RTC driver for AVR32 UC3.
+ *
+ * AVR32 Real Time Counter driver module.
+ *
+ * - Compiler:           GNU GCC for AVR32
+ * - Supported devices:  All AVR32 devices with an RTC and a PM module can be used.
+ * - AppNote:
+ *
+ * \author               Atmel Corporation: http://www.atmel.com \n
+ *                       Support and FAQ: http://support.atmel.no/
+ *
+ ******************************************************************************/
+
+/* Copyright (c) 2009 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:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. The name of Atmel may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * 4. This software may only be redistributed and used in connection with an Atmel
+ * AVR product.
+ *
+ * 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
+ * EXPRESSLY AND SPECIFICALLY 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
+ *
+ */
+
+#include <avr32/io.h>
+#include "compiler.h"
+#include "pm.h"
+#include "rtc.h"
+
+
+int rtc_is_busy(volatile avr32_rtc_t *rtc)
+{
+  return (rtc->ctrl & AVR32_RTC_CTRL_BUSY_MASK) != 0;
+}
+
+
+int rtc_init(volatile avr32_rtc_t *rtc, unsigned char osc_type, unsigned char psel)
+{
+  // If exit, it means that the configuration has not been set correctly
+  if (osc_type > (1 << AVR32_RTC_CTRL_CLK32_SIZE) - 1 ||
+      psel > (1 << AVR32_RTC_CTRL_PSEL_SIZE) - 1)
+    return 0;
+
+  // If we use the 32-kHz oscillator, we have to enable it first
+  if (osc_type == RTC_OSC_32KHZ)
+  {
+    // Select the 32-kHz oscillator crystal
+    pm_enable_osc32_crystal(&AVR32_PM);
+    // Enable the 32-kHz clock
+    pm_enable_clk32_no_wait(&AVR32_PM, AVR32_PM_OSCCTRL32_STARTUP_0_RCOSC);
+  }
+
+  // Wait until the rtc CTRL register is up-to-date
+  while (rtc_is_busy(rtc));
+
+  // Set the new RTC configuration
+  rtc->ctrl = osc_type << AVR32_RTC_CTRL_CLK32_OFFSET |
+              psel << AVR32_RTC_CTRL_PSEL_OFFSET |
+              AVR32_RTC_CTRL_CLKEN_MASK;
+
+  // Wait until write is done
+  while (rtc_is_busy(rtc));
+
+  // Set the counter value to 0
+  rtc_set_value(rtc, 0x00000000);
+  // Set the top value to 0xFFFFFFFF
+  rtc_set_top_value(rtc, 0xFFFFFFFF);
+
+  return 1;
+}
+
+
+void rtc_set_value(volatile avr32_rtc_t *rtc, unsigned long val)
+{
+  // Wait until we can write into the VAL register
+  while (rtc_is_busy(rtc));
+  // Set the new val value
+  rtc->val = val;
+  // Wait until write is done
+  while (rtc_is_busy(rtc));
+}
+
+
+unsigned long rtc_get_value(volatile avr32_rtc_t *rtc)
+{
+  return rtc->val;
+}
+
+
+void rtc_enable_wake_up(volatile avr32_rtc_t *rtc)
+{
+  // Wait until the rtc CTRL register is up-to-date
+  while (rtc_is_busy(rtc));
+  // Enable the wake up of the RTC
+  rtc->ctrl |= AVR32_RTC_CTRL_WAKE_EN_MASK;
+  // Wait until write is done
+  while (rtc_is_busy(rtc));
+}
+
+
+void rtc_disable_wake_up(volatile avr32_rtc_t *rtc)
+{
+  // Wait until the rtc CTRL register is up-to-date
+  while (rtc_is_busy(rtc));
+  // Disable the wake up of the RTC
+  rtc->ctrl &= ~AVR32_RTC_CTRL_WAKE_EN_MASK;
+  // Wait until write is done
+  while (rtc_is_busy(rtc));
+}
+
+
+void rtc_enable(volatile avr32_rtc_t *rtc)
+{
+  // Wait until the rtc CTRL register is up-to-date
+  while (rtc_is_busy(rtc));
+  // Enable the RTC
+  rtc->ctrl |= AVR32_RTC_CTRL_EN_MASK;
+  // Wait until write is done
+  while (rtc_is_busy(rtc));
+}
+
+
+void rtc_disable(volatile avr32_rtc_t *rtc)
+{
+  // Wait until the rtc CTRL register is up-to-date
+  while (rtc_is_busy(rtc));
+  // Disable the RTC
+  rtc->ctrl &= ~AVR32_RTC_CTRL_EN_MASK;
+  // Wait until write is done
+  while (rtc_is_busy(rtc));
+}
+
+
+void rtc_enable_interrupt(volatile avr32_rtc_t *rtc)
+{
+  rtc->ier = AVR32_RTC_IER_TOPI_MASK;
+}
+
+
+void rtc_disable_interrupt(volatile avr32_rtc_t *rtc)
+{
+  Bool global_interrupt_enabled = Is_global_interrupt_enabled();
+
+  if (global_interrupt_enabled) Disable_global_interrupt();
+  rtc->idr = AVR32_RTC_IDR_TOPI_MASK;
+  rtc->imr;
+  if (global_interrupt_enabled) Enable_global_interrupt();
+}
+
+
+void rtc_clear_interrupt(volatile avr32_rtc_t *rtc)
+{
+  Bool global_interrupt_enabled = Is_global_interrupt_enabled();
+
+  if (global_interrupt_enabled) Disable_global_interrupt();
+  rtc->icr = AVR32_RTC_ICR_TOPI_MASK;
+  rtc->isr;
+  if (global_interrupt_enabled) Enable_global_interrupt();
+}
+
+
+void rtc_set_top_value(volatile avr32_rtc_t *rtc, unsigned long top)
+{
+  // Wait until we can write into the VAL register
+  while (rtc_is_busy(rtc));
+  // Set the new val value
+  rtc->top = top;
+  // Wait until write is done
+  while (rtc_is_busy(rtc));
+}
+
+
+unsigned long rtc_get_top_value(volatile avr32_rtc_t *rtc)
+{
+  return rtc->top;
+}
+
+
+int rtc_interrupt_enabled(volatile avr32_rtc_t *rtc)
+{
+  return (rtc->imr & AVR32_RTC_IMR_TOPI_MASK) != 0;
+}
+
+
+int rtc_is_interrupt(volatile avr32_rtc_t *rtc)
+{
+  return (rtc->isr & AVR32_RTC_ISR_TOPI_MASK) != 0;
+}