diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2012-10-29 23:04:19 +0200 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2012-10-29 23:04:19 +0200 |
| commit | e018ceebed74b8223482bc9d1ed0b31c938381da (patch) | |
| tree | 3151f2ec3af6fb64967a177c85ba2c2af61fb9f6 /boards/ek-lm4f120xl/blinky/blinky.c | |
| parent | 48395c0348a1a3fa3330e397d2463f62ff5c45c7 (diff) | |
New example files
Diffstat (limited to 'boards/ek-lm4f120xl/blinky/blinky.c')
| -rw-r--r-- | boards/ek-lm4f120xl/blinky/blinky.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/boards/ek-lm4f120xl/blinky/blinky.c b/boards/ek-lm4f120xl/blinky/blinky.c new file mode 100644 index 0000000..d45da73 --- /dev/null +++ b/boards/ek-lm4f120xl/blinky/blinky.c @@ -0,0 +1,94 @@ +//*****************************************************************************
+//
+// blinky.c - Simple example to blink the on-board LED.
+//
+// Copyright (c) 2012 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 9453 of the EK-LM4F120XL Firmware Package.
+//
+//*****************************************************************************
+
+#include "inc/lm4f120h5qr.h"
+
+//*****************************************************************************
+//
+//! \addtogroup example_list
+//! <h1>Blinky (blinky)</h1>
+//!
+//! A very simple example that blinks the on-board LED using direct register
+//! access.
+//
+//*****************************************************************************
+
+
+//*****************************************************************************
+//
+// Blink the on-board LED.
+//
+//*****************************************************************************
+int
+main(void)
+{
+ volatile unsigned long ulLoop;
+
+ //
+ // Enable the GPIO port that is used for the on-board LED.
+ //
+ SYSCTL_RCGC2_R = SYSCTL_RCGC2_GPIOF;
+
+ //
+ // Do a dummy read to insert a few cycles after enabling the peripheral.
+ //
+ ulLoop = SYSCTL_RCGC2_R;
+
+ //
+ // Enable the GPIO pin for the LED (PF3). Set the direction as output, and
+ // enable the GPIO pin for digital function.
+ //
+ GPIO_PORTF_DIR_R = 0x08;
+ GPIO_PORTF_DEN_R = 0x08;
+
+ //
+ // Loop forever.
+ //
+ while(1)
+ {
+ //
+ // Turn on the LED.
+ //
+ GPIO_PORTF_DATA_R |= 0x08;
+
+ //
+ // Delay for a bit.
+ //
+ for(ulLoop = 0; ulLoop < 200000; ulLoop++)
+ {
+ }
+
+ //
+ // Turn off the LED.
+ //
+ GPIO_PORTF_DATA_R &= ~(0x08);
+
+ //
+ // Delay for a bit.
+ //
+ for(ulLoop = 0; ulLoop < 200000; ulLoop++)
+ {
+ }
+ }
+}
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