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/hello/hello.c | |
| parent | 48395c0348a1a3fa3330e397d2463f62ff5c45c7 (diff) | |
New example files
Diffstat (limited to 'boards/ek-lm4f120xl/hello/hello.c')
| -rw-r--r-- | boards/ek-lm4f120xl/hello/hello.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/boards/ek-lm4f120xl/hello/hello.c b/boards/ek-lm4f120xl/hello/hello.c new file mode 100644 index 0000000..d7a6ba1 --- /dev/null +++ b/boards/ek-lm4f120xl/hello/hello.c @@ -0,0 +1,135 @@ +//*****************************************************************************
+//
+// hello.c - Simple hello world example.
+//
+// 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/hw_memmap.h"
+#include "inc/hw_types.h"
+#include "driverlib/debug.h"
+#include "driverlib/fpu.h"
+#include "driverlib/gpio.h"
+#include "driverlib/pin_map.h"
+#include "driverlib/rom.h"
+#include "driverlib/sysctl.h"
+#include "utils/uartstdio.h"
+
+//*****************************************************************************
+//
+//! \addtogroup example_list
+//! <h1>Hello World (hello)</h1>
+//!
+//! A very simple ``hello world'' example. It simply displays ``Hello World!''
+//! on the UART and is a starting point for more complicated applications.
+//!
+//! UART0, connected to the Stellaris Virtual Serial Port and running at
+//! 115,200, 8-N-1, is used to display messages from this application.
+//
+//*****************************************************************************
+
+
+//*****************************************************************************
+//
+// The error routine that is called if the driver library encounters an error.
+//
+//*****************************************************************************
+#ifdef DEBUG
+void
+__error__(char *pcFilename, unsigned long ulLine)
+{
+}
+#endif
+
+//*****************************************************************************
+//
+// Print "Hello World!" to the UART on the Stellaris evaluation board.
+//
+//*****************************************************************************
+int
+main(void)
+{
+ volatile unsigned long ulLoop;
+
+ //
+ // 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_4 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ |
+ SYSCTL_OSC_MAIN);
+
+
+ //
+ // Enable the GPIO port that is used for the on-board LED.
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
+
+ //
+ // Enable the GPIO pins for the LED (PF2 & PF3).
+ //
+ ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_2);
+
+
+ //
+ // Initialize the UART.
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
+ ROM_GPIOPinConfigure(GPIO_PA0_U0RX);
+ ROM_GPIOPinConfigure(GPIO_PA1_U0TX);
+ ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
+ UARTStdioInit(0);
+
+ //
+ // Hello!
+ //
+ UARTprintf("Hello, world!\n");
+
+ //
+ // We are finished. Hang around doing nothing.
+ //
+ while(1)
+ {
+ //
+ // Turn on the BLUE LED.
+ //
+ GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, GPIO_PIN_2);
+
+ //
+ // Delay for a bit.
+ //
+ SysCtlDelay(SysCtlClockGet() / 10 / 3);
+
+ //
+ // Turn off the BLUE LED.
+ //
+ GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, 0);
+
+ //
+ // Delay for a bit.
+ //
+ SysCtlDelay(SysCtlClockGet() / 10 / 3);
+ }
+}
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