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bobcfacchinm
bobc
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Add Due watchdog functions; modified according to feedback supplied
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6 files changed

+112
-69
lines changed

6 files changed

+112
-69
lines changed

‎hardware/arduino/sam/cores/arduino/Arduino.h

+2
Original file line numberDiff line numberDiff line change
@@ -194,6 +194,8 @@ extern const PinDescription g_APinDescription[] ;
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#include "wiring_shift.h"
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#include "WInterrupts.h"
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#include "watchdog.h"
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// USB Device
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#define USB_VID 0x2341 // arduino LLC vid
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#define USB_PID_LEONARDO 0x0034

‎hardware/arduino/sam/cores/arduino/main.cpp

+3
Original file line numberDiff line numberDiff line change
@@ -41,6 +41,9 @@ void initVariant() { }
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*/
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int main( void )
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{
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// Initialize watchdog
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watchdogSetup();
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init();
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initVariant();

‎hardware/arduino/sam/cores/arduino/watchdog.cpp

+55
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,55 @@
1+
/*
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Copyright (c) 2014 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <chip.h>
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#include "watchdog.h"
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void watchdogEnable (uint32_t timeout)
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{
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/* this assumes the slow clock is running at 32.768 kHz
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watchdog frequency is therefore 32768 / 128 = 256 Hz */
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timeout = timeout * 256 / 1000;
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if (timeout == 0)
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timeout = 1;
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else if (timeout > 0xFFF)
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timeout = 0xFFF;
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timeout = WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(timeout) | WDT_MR_WDD(timeout);
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WDT_Enable (WDT, timeout);
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}
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void watchdogDisable(void)
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{
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WDT_Disable (WDT);
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}
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void watchdogReset(void)
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{
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WDT_Restart (WDT);
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}
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extern "C"
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void _watchdogDefaultSetup (void)
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{
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WDT_Disable (WDT);
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}
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void watchdogSetup (void) __attribute__ ((weak, alias("_watchdogDefaultSetup")));
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‎hardware/arduino/sam/cores/arduino/watchdog.h

+52
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,52 @@
1+
/*
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Copyright (c) 2014 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
5+
modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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9+
This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _WATCHDOG_
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#define _WATCHDOG_
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#include <stdint.h>
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// Watchdog functions
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/*
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* \brief Enable the watchdog with the specified timeout. Should only be called once.
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*
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* \param timeount in milliseconds.
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*/
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void watchdogEnable (uint32_t timeout);
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/*
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* \brief Disable the watchdog timer. Should only be called once.
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*
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*/
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void watchdogDisable (void);
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/*
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* \brief Reset the watchdog counter.
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*
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*/
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void watchdogReset (void);
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/*
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* \brief Watchdog initialize hook. This function is called from init(). If the user does not provide
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* this function, then the default action is to disable watchdog.
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*/
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void watchdogSetup (void);
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#endif /* _WATCHDOG_ */
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‎hardware/arduino/sam/variants/arduino_due_x/variant.cpp

-49
Original file line numberDiff line numberDiff line change
@@ -358,52 +358,6 @@ void serialEventRun(void)
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if (Serial3.available()) serialEvent3();
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}
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// ----------------------------------------------------------------------------
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extern "C" {
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/**
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* Watchdog enable
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*
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* Enable the watchdog timer with the specified settings.
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* WDTO_xxx macros provide standard settings.
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* Should only be called once.
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*/
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void wdt_enable (uint32_t mode)
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{
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WDT_Enable (WDT, mode);
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}
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/**
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* Watchdog disable
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*
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* Disable the watchdog timer.
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* Should only be called once.
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*/
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void wdt_disable(void)
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{
384-
WDT_Disable (WDT);
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}
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/**
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* Watchdog reset
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*
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* Resets the watchdog counter
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*/
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void wdt_reset(void)
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{
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WDT_Restart (WDT);
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}
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} // extern "C"
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/**
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* Watchdog initialize hook
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*
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* This function is called from init().
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* Default action is to disable watchdog.
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*/
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void wdt_initialize(void) __attribute__ ((weak, alias("wdt_disable")));
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407361
// ----------------------------------------------------------------------------
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409363
#ifdef __cplusplus
@@ -423,9 +377,6 @@ void init( void )
423377
while (true);
424378
}
425379

426-
// Initialize watchdog
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wdt_initialize();
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429380
// Initialize C library
430381
__libc_init_array();
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‎hardware/arduino/sam/variants/arduino_due_x/variant.h

-20
Original file line numberDiff line numberDiff line change
@@ -232,25 +232,6 @@ static const uint8_t CAN1TX = 89;
232232
#define TC_MIN_DUTY_CYCLE 0
233233
#define TC_RESOLUTION 8
234234

235-
// Watchdog routines
236-
237-
#define WDTO_15MS WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(4) | WDT_MR_WDD(4)
238-
#define WDTO_30MS WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(8) | WDT_MR_WDD(8)
239-
#define WDTO_60MS WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(15) | WDT_MR_WDD(15)
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#define WDTO_120MS WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(31) | WDT_MR_WDD(31)
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#define WDTO_250MS WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(64) | WDT_MR_WDD(64)
242-
#define WDTO_500MS WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(128) | WDT_MR_WDD(128)
243-
#define WDTO_1S WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(256) | WDT_MR_WDD(256)
244-
#define WDTO_2S WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(512) | WDT_MR_WDD(512)
245-
#define WDTO_4S WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(1024) | WDT_MR_WDD(1024)
246-
#define WDTO_8S WDT_MR_WDRSTEN | WDT_MR_WDRPROC | WDT_MR_WDV(2048) | WDT_MR_WDD(2048)
247-
248-
void wdt_enable (uint32_t mode);
249-
250-
void wdt_disable(void);
251-
252-
void wdt_reset(void);
253-
254235
#ifdef __cplusplus
255236
}
256237
#endif
@@ -293,6 +274,5 @@ extern USARTClass Serial3;
293274
#define SERIAL_PORT_HARDWARE2 Serial2
294275
#define SERIAL_PORT_HARDWARE3 Serial3
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#endif /* _VARIANT_ARDUINO_DUE_X_ */
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