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/dk-tm4c129x/timers/timers.c | |
| parent | 990090a4cc9070837d31e66b58d40f0c3d038741 (diff) | |
Add more board models
Diffstat (limited to 'boards/dk-tm4c129x/timers/timers.c')
| -rw-r--r-- | boards/dk-tm4c129x/timers/timers.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/boards/dk-tm4c129x/timers/timers.c b/boards/dk-tm4c129x/timers/timers.c new file mode 100644 index 0000000..72ec92f --- /dev/null +++ b/boards/dk-tm4c129x/timers/timers.c @@ -0,0 +1,216 @@ +//*****************************************************************************
+//
+// timers.c - Timers example.
+//
+// Copyright (c) 2013-2014 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 DK-TM4C129X Firmware Package.
+//
+//*****************************************************************************
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "inc/hw_ints.h"
+#include "inc/hw_memmap.h"
+#include "inc/hw_types.h"
+#include "driverlib/interrupt.h"
+#include "driverlib/rom.h"
+#include "driverlib/rom_map.h"
+#include "driverlib/sysctl.h"
+#include "driverlib/timer.h"
+#include "grlib/grlib.h"
+#include "drivers/frame.h"
+#include "drivers/kentec320x240x16_ssd2119.h"
+#include "drivers/pinout.h"
+
+//*****************************************************************************
+//
+//! \addtogroup example_list
+//! <h1>Timer (timers)</h1>
+//!
+//! This example application demonstrates the use of the timers to generate
+//! periodic interrupts. One timer is set up to interrupt once per second and
+//! the other to interrupt twice per second; each interrupt handler will toggle
+//! its own indicator on the display.
+//
+//*****************************************************************************
+
+//*****************************************************************************
+//
+// Flags that contain the current value of the interrupt indicator as displayed
+// on the display.
+//
+//*****************************************************************************
+uint32_t g_ui32Flags;
+
+//*****************************************************************************
+//
+// Graphics context used to show text on the 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
+
+//*****************************************************************************
+//
+// The interrupt handler for the first timer interrupt.
+//
+//*****************************************************************************
+void
+Timer0IntHandler(void)
+{
+ //
+ // Clear the timer interrupt.
+ //
+ ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
+
+ //
+ // Toggle the flag for the first timer.
+ //
+ HWREGBITW(&g_ui32Flags, 0) ^= 1;
+
+ //
+ // Update the interrupt status on the display.
+ //
+ ROM_IntMasterDisable();
+ GrStringDraw(&g_sContext, (HWREGBITW(&g_ui32Flags, 0) ? "1" : "0"), -1,
+ 195, 108, 1);
+ ROM_IntMasterEnable();
+}
+
+//*****************************************************************************
+//
+// The interrupt handler for the second timer interrupt.
+//
+//*****************************************************************************
+void
+Timer1IntHandler(void)
+{
+ //
+ // Clear the timer interrupt.
+ //
+ ROM_TimerIntClear(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
+
+ //
+ // Toggle the flag for the second timer.
+ //
+ HWREGBITW(&g_ui32Flags, 1) ^= 1;
+
+ //
+ // Update the interrupt status on the display.
+ //
+ ROM_IntMasterDisable();
+ GrStringDraw(&g_sContext, (HWREGBITW(&g_ui32Flags, 1) ? "1" : "0"), -1,
+ 195, 128, 1);
+ ROM_IntMasterEnable();
+}
+
+//*****************************************************************************
+//
+// This example application demonstrates the use of the timers to generate
+// periodic interrupts.
+//
+//*****************************************************************************
+int
+main(void)
+{
+ uint32_t ui32SysClock;
+
+ //
+ // Run from the PLL at 120 MHz.
+ //
+ ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
+ SYSCTL_OSC_MAIN | SYSCTL_USE_PLL |
+ SYSCTL_CFG_VCO_480), 120000000);
+
+ //
+ // Configure the device pins.
+ //
+ PinoutSet();
+
+ //
+ // Initialize the display driver.
+ //
+ Kentec320x240x16_SSD2119Init(ui32SysClock);
+
+ //
+ // Initialize the graphics context.
+ //
+ GrContextInit(&g_sContext, &g_sKentec320x240x16_SSD2119);
+
+ //
+ // Draw the application frame.
+ //
+ FrameDraw(&g_sContext, "timers");
+
+ //
+ // Initialize timer status display.
+ //
+ GrStringDraw(&g_sContext, "Timer 0:", -1, 100, 108, 0);
+ GrStringDraw(&g_sContext, "Timer 1:", -1, 100, 128, 0);
+
+ //
+ // Enable the peripherals used by this example.
+ //
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
+ ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
+
+ //
+ // Enable processor interrupts.
+ //
+ ROM_IntMasterEnable();
+
+ //
+ // Configure the two 32-bit periodic timers.
+ //
+ ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
+ ROM_TimerConfigure(TIMER1_BASE, TIMER_CFG_PERIODIC);
+ ROM_TimerLoadSet(TIMER0_BASE, TIMER_A, ui32SysClock);
+ ROM_TimerLoadSet(TIMER1_BASE, TIMER_A, ui32SysClock / 2);
+
+ //
+ // Setup the interrupts for the timer timeouts.
+ //
+ ROM_IntEnable(INT_TIMER0A);
+ ROM_IntEnable(INT_TIMER1A);
+ ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
+ ROM_TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
+
+ //
+ // Enable the timers.
+ //
+ ROM_TimerEnable(TIMER0_BASE, TIMER_A);
+ ROM_TimerEnable(TIMER1_BASE, TIMER_A);
+
+ //
+ // Loop forever while the timers run.
+ //
+ while(1)
+ {
+ }
+}
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