Add more board models

1 files changed, 268 insertions, 0 deletions

diff --git a/boards/ek-lm4f232/watchdog/watchdog.c b/boards/ek-lm4f232/watchdog/watchdog.c
new file mode 100644
index 0000000..7f4fc75
--- /dev/null
+++ b/boards/ek-lm4f232/watchdog/watchdog.c
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+//*****************************************************************************

+//

+// watchdog.c - Watchdog timer example.

+//

+// Copyright (c) 2008-2014 Texas Instruments Incorporated.  All rights reserved.

+// Software License Agreement

+// 

+// Texas Instruments (TI) is supplying this software for use solely and

+// exclusively on TI's microcontroller products. The software is owned by

+// TI and/or its suppliers, and is protected under applicable copyright

+// laws. You may not combine this software with "viral" open-source

+// software in order to form a larger program.

+// 

+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.

+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT

+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY

+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

+// DAMAGES, FOR ANY REASON WHATSOEVER.

+// 

+// This is part of revision 2.1.0.12573 of the EK-LM4F232 Firmware Package.

+//

+//*****************************************************************************

+

+#include <stdint.h>

+#include <stdbool.h>

+#include "inc/hw_ints.h"

+#include "inc/hw_memmap.h"

+#include "inc/hw_types.h"

+#include "driverlib/debug.h"

+#include "driverlib/fpu.h"

+#include "driverlib/gpio.h"

+#include "driverlib/interrupt.h"

+#include "driverlib/sysctl.h"

+#include "driverlib/watchdog.h"

+#include "driverlib/rom.h"

+#include "grlib/grlib.h"

+#include "drivers/cfal96x64x16.h"

+#include "drivers/buttons.h"

+

+//*****************************************************************************

+//

+//! \addtogroup example_list

+//! <h1>Watchdog (watchdog)</h1>

+//!

+//! This example application demonstrates the use of the watchdog as a simple

+//! heartbeat for the system.  If the watchdog is not periodically fed, it will

+//! reset the system.  Each time the watchdog is fed, the LED is inverted so

+//! that it is easy to see that it is being fed, which occurs once every

+//! second.  To stop the watchdog being fed and, hence, cause a system reset,

+//! press the select button.

+//

+//*****************************************************************************

+

+//*****************************************************************************

+//

+// Graphics context used to show text on the display.

+//

+//*****************************************************************************

+tContext g_sContext;

+

+//*****************************************************************************

+//

+// Flag to tell the watchdog interrupt handler whether or not to clear the

+// interrupt (feed the watchdog).

+//

+//*****************************************************************************

+volatile bool g_bFeedWatchdog = true;

+

+//*****************************************************************************

+//

+// The error routine that is called if the driver library encounters an error.

+//

+//*****************************************************************************

+#ifdef DEBUG

+void

+__error__(char *pcFilename, uint32_t ui32Line)

+{

+}

+#endif

+

+//*****************************************************************************

+//

+// The interrupt handler for the watchdog.  This feeds the dog (so that the

+// processor does not get reset) and winks the LED connected to GPIO B3.

+//

+//*****************************************************************************

+void

+WatchdogIntHandler(void)

+{

+    //

+    // If we have been told to stop feeding the watchdog, return immediately

+    // without clearing the interrupt.  This will cause the system to reset

+    // next time the watchdog interrupt fires.

+    //

+    if(!g_bFeedWatchdog)

+    {

+        return;

+    }

+

+    //

+    // Clear the watchdog interrupt.

+    //

+    ROM_WatchdogIntClear(WATCHDOG0_BASE);

+

+    //

+    // Invert the GPIO PF3 value.

+    //

+    ROM_GPIOPinWrite(GPIO_PORTG_BASE, GPIO_PIN_2,

+                     (ROM_GPIOPinRead(GPIO_PORTG_BASE, GPIO_PIN_2) ^

+                                     GPIO_PIN_2));

+}

+

+//*****************************************************************************

+//

+// This function is called when the select button is pressed.

+//

+//*****************************************************************************

+static int32_t

+SelectButtonPressed(void)

+{

+    //

+    // Find the X center of the display

+    //

+    int32_t i32CenterX = GrContextDpyWidthGet(&g_sContext) / 2;

+

+    //

+    // Let the user know that the button has been pressed and that the

+    // watchdog is being starved.

+    //

+    GrStringDrawCentered(&g_sContext, "Starving", -1, i32CenterX, 14, 1);

+    GrStringDrawCentered(&g_sContext, "Watchdog", -1, i32CenterX, 24, 1);

+    GrStringDrawCentered(&g_sContext, "System", -1, i32CenterX, 36, 1);

+    GrStringDrawCentered(&g_sContext, "   will   ", -1, i32CenterX, 46, 1);

+    GrStringDrawCentered(&g_sContext, "reset ...", -1, i32CenterX, 56, 1);

+

+    //

+    // Set the flag that tells the interrupt handler not to clear the

+    // watchdog interrupt.

+    //

+    g_bFeedWatchdog = false;

+

+    return(0);

+}

+

+//*****************************************************************************

+//

+// This example demonstrates the use of the watchdog timer.

+//

+//*****************************************************************************

+int

+main(void)

+{

+    int_fast32_t i32CenterX;

+    tRectangle sRect;

+

+    //

+    // Enable lazy stacking for interrupt handlers.  This allows floating-point

+    // instructions to be used within interrupt handlers, but at the expense of

+    // extra stack usage.

+    //

+    ROM_FPULazyStackingEnable();

+

+    //

+    // Set the clocking to run directly from the crystal.

+    //

+    ROM_SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |

+                       SYSCTL_XTAL_16MHZ);

+

+    //

+    // Initialize the display and  buttons drivers.

+    //

+    CFAL96x64x16Init();

+    ButtonsInit();

+

+    //

+    // Initialize the graphics context and find the middle X coordinate.

+    //

+    GrContextInit(&g_sContext, &g_sCFAL96x64x16);

+    i32CenterX = GrContextDpyWidthGet(&g_sContext) / 2;

+

+    //

+    // Fill the top part of the screen with blue to create the banner.

+    //

+    sRect.i16XMin = 0;

+    sRect.i16YMin = 0;

+    sRect.i16XMax = GrContextDpyWidthGet(&g_sContext) - 1;

+    sRect.i16YMax = 9;

+    GrContextForegroundSet(&g_sContext, ClrDarkBlue);

+    GrRectFill(&g_sContext, &sRect);

+

+    //

+    // Change foreground for white text.

+    //

+    GrContextForegroundSet(&g_sContext, ClrWhite);

+

+    //

+    // Put the application name in the middle of the banner.

+    //

+    GrContextFontSet(&g_sContext, g_psFontFixed6x8);

+    GrStringDrawCentered(&g_sContext, "watchdog", -1, i32CenterX, 4, 0);

+

+    //

+    // Show the state and offer some instructions to the user.

+    //

+    GrContextFontSet(&g_sContext, g_psFontFixed6x8);

+    GrStringDrawCentered(&g_sContext, "Feeding", -1, i32CenterX, 14, 1);

+    GrStringDrawCentered(&g_sContext, "Watchdog", -1, i32CenterX, 24, 1);

+    GrStringDrawCentered(&g_sContext, "Press", -1, i32CenterX, 36, 1);

+    GrStringDrawCentered(&g_sContext, "Select", -1, i32CenterX, 46, 1);

+    GrStringDrawCentered(&g_sContext, "to stop", -1, i32CenterX, 56, 1);

+

+    //

+    // Enable the peripherals used by this example.

+    //

+    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_WDOG0);

+    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);

+

+    //

+    // Enable processor interrupts.

+    //

+    ROM_IntMasterEnable();

+

+    //

+    // Set GPIO PG2 as an output.  This drives an LED on the board that will

+    // toggle when a watchdog interrupt is processed.

+    //

+    ROM_GPIOPinTypeGPIOOutput(GPIO_PORTG_BASE, GPIO_PIN_2);

+    ROM_GPIOPinWrite(GPIO_PORTG_BASE, GPIO_PIN_2, 0);

+

+    //

+    // Enable the watchdog interrupt.

+    //

+    ROM_IntEnable(INT_WATCHDOG);

+

+    //

+    // Set the period of the watchdog timer.

+    //

+    ROM_WatchdogReloadSet(WATCHDOG0_BASE, ROM_SysCtlClockGet());

+

+    //

+    // Enable reset generation from the watchdog timer.

+    //

+    ROM_WatchdogResetEnable(WATCHDOG0_BASE);

+

+    //

+    // Enable the watchdog timer.

+    //

+    ROM_WatchdogEnable(WATCHDOG0_BASE);

+

+    //

+    // Loop forever while the LED winks as watchdog interrupts are handled.

+    //

+    while(1)

+    {

+        //

+        // Poll for the select button pressed

+        //

+        uint8_t ui8Buttons = ButtonsPoll(0, 0);

+        if(ui8Buttons & SELECT_BUTTON)

+        {

+            SelectButtonPressed();

+            while(1)

+            {

+            }

+        }

+    }

+}