diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-06-29 12:34:32 +0300 |
| commit | c3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (patch) | |
| tree | added370d1e356901f8579f076e3263fb0464db7 /boards/ek-lm4f232/usb_stick_demo/usb_stick_demo.c | |
| parent | 990090a4cc9070837d31e66b58d40f0c3d038741 (diff) | |
Add more board models
Diffstat (limited to 'boards/ek-lm4f232/usb_stick_demo/usb_stick_demo.c')
| -rw-r--r-- | boards/ek-lm4f232/usb_stick_demo/usb_stick_demo.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/boards/ek-lm4f232/usb_stick_demo/usb_stick_demo.c b/boards/ek-lm4f232/usb_stick_demo/usb_stick_demo.c new file mode 100644 index 0000000..ee6fa6d --- /dev/null +++ b/boards/ek-lm4f232/usb_stick_demo/usb_stick_demo.c @@ -0,0 +1,274 @@ +//*****************************************************************************
+//
+// usb_stick_demo.c - USB stick update demo.
+//
+// Copyright (c) 2012-2014 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 "inc/hw_memmap.h"
+#include "driverlib/sysctl.h"
+#include "driverlib/rom.h"
+#include "driverlib/rom_map.h"
+#include "driverlib/gpio.h"
+#include "grlib/grlib.h"
+#include "drivers/cfal96x64x16.h"
+
+//*****************************************************************************
+//
+//! \addtogroup example_list
+//! <h1>USB Stick Update Demo (usb_stick_demo)</h1>
+//!
+//! An example to demonstrate the use of the flash-based USB stick update
+//! program. This example is meant to be loaded into flash memory from a USB
+//! memory stick, using the USB stick update program (usb_stick_update),
+//! running on the microcontroller.
+//!
+//! After this program is built, the binary file (usb_stick_demo.bin), should
+//! be renamed to the filename expected by usb_stick_update ("FIRMWARE.BIN" by
+//! default) and copied to the root directory of a USB memory stick. Then,
+//! when the memory stick is plugged into the eval board that is running the
+//! usb_stick_update program, this example program will be loaded into flash
+//! and then run on the microcontroller.
+//!
+//! This program simply displays a message on the screen and prompts the user
+//! to press the select button. Once the button is pressed, control is passed
+//! back to the usb_stick_update program which is still is flash, and it will
+//! attempt to load another program from the memory stick. This shows how
+//! a user application can force a new firmware update from the memory stick.
+//
+//*****************************************************************************
+
+//*****************************************************************************
+//
+// The error routine that is called if the driver library encounters an error.
+//
+//*****************************************************************************
+#ifdef DEBUG
+void
+__error__(char *pcFilename, uint32_t ui32Line)
+{
+}
+#endif
+
+//*****************************************************************************
+//
+// Demonstrate the use of the USB stick update example.
+//
+//*****************************************************************************
+int
+main(void)
+{
+ uint_fast32_t ui32Count;
+ tContext sContext;
+ 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 system clock to run at 50MHz from the PLL.
+ //
+ ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
+ SYSCTL_XTAL_16MHZ);
+
+ //
+ // Initialize the display driver.
+ //
+ CFAL96x64x16Init();
+
+ //
+ // Initialize the graphics context.
+ //
+ GrContextInit(&sContext, &g_sCFAL96x64x16);
+
+ //
+ // Fill the top 24 rows of the screen with blue to create the banner.
+ //
+ sRect.i16XMin = 0;
+ sRect.i16YMin = 0;
+ sRect.i16XMax = GrContextDpyWidthGet(&sContext) - 1;
+ sRect.i16YMax = 9;
+ GrContextForegroundSet(&sContext, ClrDarkBlue);
+ GrRectFill(&sContext, &sRect);
+
+ //
+ // Put a white box around the banner.
+ //
+ GrContextForegroundSet(&sContext, ClrWhite);
+ GrRectDraw(&sContext, &sRect);
+
+ //
+ // Put the application name in the middle of the banner.
+ //
+ GrContextFontSet(&sContext, g_psFontFixed6x8);
+ GrStringDrawCentered(&sContext, "usb-stick-demo", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 4, 0);
+
+ //
+ // Indicate what is happening.
+ //
+ GrStringDrawCentered(&sContext, "Press the", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 20, 0);
+ GrStringDrawCentered(&sContext, "select button to", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 30, 0);
+ GrStringDrawCentered(&sContext, "start the USB", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 40, 0);
+ GrStringDrawCentered(&sContext, "stick updater.", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 50, 0);
+
+ //
+ // Flush any cached drawing operations.
+ //
+ GrFlush(&sContext);
+
+ //
+ // Enable the GPIO module which the select button is attached to.
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOM);
+
+ //
+ // Enable the GPIO pin to read the user button.
+ //
+ ROM_GPIODirModeSet(GPIO_PORTM_BASE, GPIO_PIN_4, GPIO_DIR_MODE_IN);
+ MAP_GPIOPadConfigSet(GPIO_PORTM_BASE, GPIO_PIN_4, GPIO_STRENGTH_2MA,
+ GPIO_PIN_TYPE_STD_WPU);
+
+ //
+ // Wait for the pullup to take effect or the next loop will exist too soon.
+ //
+ SysCtlDelay(1000);
+
+ //
+ // Wait until the select button has been pressed for ~40ms (in order to
+ // debounce the press).
+ //
+ ui32Count = 0;
+ while(1)
+ {
+ //
+ // See if the button is pressed.
+ //
+ if(ROM_GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_4) == 0)
+ {
+ //
+ // Increment the count since the button is pressed.
+ //
+ ui32Count++;
+
+ //
+ // If the count has reached 4, then the button has been debounced
+ // as being pressed.
+ //
+ if(ui32Count == 4)
+ {
+ break;
+ }
+ }
+ else
+ {
+ //
+ // Reset the count since the button is not pressed.
+ //
+ ui32Count = 0;
+ }
+
+ //
+ // Delay for approximately 10ms.
+ //
+ SysCtlDelay(16000000 / (3 * 100));
+ }
+
+ //
+ // Wait until the select button has been released for ~40ms (in order to
+ // debounce the release).
+ //
+ ui32Count = 0;
+ while(1)
+ {
+ //
+ // See if the button is pressed.
+ //
+ if(ROM_GPIOPinRead(GPIO_PORTM_BASE, GPIO_PIN_4) != 0)
+ {
+ //
+ // Increment the count since the button is released.
+ //
+ ui32Count++;
+
+ //
+ // If the count has reached 4, then the button has been debounced
+ // as being released.
+ //
+ if(ui32Count == 4)
+ {
+ break;
+ }
+ }
+ else
+ {
+ //
+ // Reset the count since the button is pressed.
+ //
+ ui32Count = 0;
+ }
+
+ //
+ // Delay for approximately 10ms.
+ //
+ SysCtlDelay(16000000 / (3 * 100));
+ }
+
+ //
+ // Indicate that the updater is being called.
+ //
+ GrStringDrawCentered(&sContext, "The USB stick", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 20, true);
+ GrStringDrawCentered(&sContext, "updater is now", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 30, true);
+ GrStringDrawCentered(&sContext, "waiting for a", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 40, true);
+ GrStringDrawCentered(&sContext, "USB stick.", -1,
+ GrContextDpyWidthGet(&sContext) / 2, 50, true);
+
+ //
+ // Flush any cached drawing operations.
+ //
+ GrFlush(&sContext);
+
+ //
+ // Call the updater so that it will search for an update on a memory stick.
+ //
+ (*((void (*)(void))(*(uint32_t *)0x2c)))();
+
+ //
+ // The updater should take control, so this should never be reached.
+ // Just in case, loop forever.
+ //
+ while(1)
+ {
+ }
+}
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