Add more board models

1 files changed, 292 insertions, 0 deletions

diff --git a/boards/ek-lm4f232/bitband/bitband.c b/boards/ek-lm4f232/bitband/bitband.c
new file mode 100644
index 0000000..f550ba0
--- /dev/null
+++ b/boards/ek-lm4f232/bitband/bitband.c
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+//*****************************************************************************

+//

+// bitband.c - Bit-band manipulation example.

+//

+// Copyright (c) 2011-2014 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_types.h"

+#include "driverlib/fpu.h"

+#include "driverlib/sysctl.h"

+#include "driverlib/systick.h"

+#include "driverlib/rom.h"

+#include "grlib/grlib.h"

+#include "drivers/cfal96x64x16.h"

+

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

+//

+//! \addtogroup example_list

+//! <h1>Bit-Banding (bitband)</h1>

+//!

+//! This example application demonstrates the use of the bit-banding

+//! capabilities of the Cortex-M3 microprocessor.  All of SRAM and all of the

+//! peripherals reside within bit-band regions, meaning that bit-banding

+//! operations can be applied to any of them.  In this example, a variable in

+//! SRAM is set to a particular value one bit at a time using bit-banding

+//! operations (it would be more efficient to do a single non-bit-banded write;

+//! this simply demonstrates the operation of bit-banding).

+//

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

+

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

+//

+// A map of hex nibbles to ASCII characters.

+//

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

+static const char * const pcHex = "0123456789ABCDEF";

+

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

+//

+// The value that is to be modified via bit-banding.

+//

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

+static volatile uint32_t g_ui32Value;

+

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

+//

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

+//

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

+tContext g_sContext;

+

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

+//

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

+//

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

+#ifdef DEBUG

+void

+__error__(char *pcFilename, uint32_t ui32Line)

+{

+}

+#endif

+

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

+//

+// Delay for the specified number of seconds.  Depending upon the current

+// SysTick value, the delay will be between N-1 and N seconds (i.e. N-1 full

+// seconds are guaranteed, aint32_t with the remainder of the current second).

+//

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

+void

+Delay(uint32_t ui32Seconds)

+{

+    //

+    // Loop while there are more seconds to wait.

+    //

+    while(ui32Seconds--)

+    {

+        //

+        // Wait until the SysTick value is less than 1000.

+        //

+        while(ROM_SysTickValueGet() > 1000)

+        {

+        }

+

+        //

+        // Wait until the SysTick value is greater than 1000.

+        //

+        while(ROM_SysTickValueGet() < 1000)

+        {

+        }

+    }

+}

+

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

+//

+// Print the given value as a hexadecimal string on the CSTN.

+//

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

+void

+PrintValue(uint32_t ui32Value)

+{

+    char pcBuffer[9];

+

+    pcBuffer[0] = pcHex[(ui32Value >> 28) & 15];

+    pcBuffer[1] = pcHex[(ui32Value >> 24) & 15];

+    pcBuffer[2] = pcHex[(ui32Value >> 20) & 15];

+    pcBuffer[3] = pcHex[(ui32Value >> 16) & 15];

+    pcBuffer[4] = pcHex[(ui32Value >> 12) & 15];

+    pcBuffer[5] = pcHex[(ui32Value >> 8) & 15];

+    pcBuffer[6] = pcHex[(ui32Value >> 4) & 15];

+    pcBuffer[7] = pcHex[(ui32Value >> 0) & 15];

+    pcBuffer[8] = '\0';

+

+    GrStringDrawCentered(&g_sContext, pcBuffer, -1,

+                         GrContextDpyWidthGet(&g_sContext) / 2, 28, 1);

+}

+

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

+//

+// This example demonstrates the use of bit-banding to set individual bits

+// within a word of SRAM.

+//

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

+int

+main(void)

+{

+    tRectangle sRect;

+    uint32_t ui32Errors, ui32Idx;

+

+    //

+    // 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 driver.

+    //

+    CFAL96x64x16Init();

+

+    //

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

+    //

+    GrContextInit(&g_sContext, &g_sCFAL96x64x16);

+

+    //

+    // 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, "bitband", -1,

+                         GrContextDpyWidthGet(&g_sContext) / 2, 4, 0);

+    GrContextFontSet(&g_sContext, g_psFontFixed6x8);

+

+    //

+    // Set up and enable the SysTick timer.  It will be used as a reference

+    // for delay loops.  The SysTick timer period will be set up for one

+    // second.

+    //

+    ROM_SysTickPeriodSet(ROM_SysCtlClockGet());

+    ROM_SysTickEnable();

+

+    //

+    // Set the value and error count to zero.

+    //

+    g_ui32Value = 0;

+    ui32Errors = 0;

+

+    //

+    // Print the initial value to the CSTN.

+    //

+    PrintValue(g_ui32Value);

+

+    //

+    // Delay for 1 second.

+    //

+    Delay(1);

+

+    //

+    // Set the value to 0xdecafbad using bit band accesses to each individual

+    // bit.

+    //

+    for(ui32Idx = 0; ui32Idx < 32; ui32Idx++)

+    {

+        //

+        // Set this bit.

+        //

+        HWREGBITW(&g_ui32Value, 31 - ui32Idx) = 

+                                            (0xdecafbad >> (31 - ui32Idx)) & 1;

+

+        //

+        // Print the current value to the CSTN.

+        //

+        PrintValue(g_ui32Value);

+

+        //

+        // Delay for 1 second.

+        //

+        Delay(1);

+    }

+

+    //

+    // Make sure that the value is 0xdecafbad.

+    //

+    if(g_ui32Value != 0xdecafbad)

+    {

+        ui32Errors++;

+    }

+

+    //

+    // Make sure that the individual bits read back correctly.

+    //

+    for(ui32Idx = 0; ui32Idx < 32; ui32Idx++)

+    {

+        if(HWREGBITW(&g_ui32Value, ui32Idx) != ((0xdecafbad >> ui32Idx) & 1))

+        {

+            ui32Errors++;

+        }

+    }

+

+    //

+    // Delay for 2 seconds.

+    //

+    Delay(2);

+

+    //

+    // Print out the result.

+    //

+    if(ui32Errors)

+    {

+        GrStringDrawCentered(&g_sContext, "Errors!", -1,

+                             GrContextDpyWidthGet(&g_sContext) / 2, 48, 0);

+    }

+    else

+    {

+        GrStringDrawCentered(&g_sContext, "Success!", -1,

+                             GrContextDpyWidthGet(&g_sContext) / 2, 48, 0);

+    }

+

+    //

+    // Flush any cached drawing operations.

+    //

+    GrFlush(&g_sContext);

+

+    //

+    // Loop forever.

+    //

+    while(1)

+    {

+    }

+}