Add third_party libs

1 files changed, 399 insertions, 0 deletions

diff --git a/third_party/FreeRTOS/Demo/CORTEX_LM3S811_KEIL/main.c b/third_party/FreeRTOS/Demo/CORTEX_LM3S811_KEIL/main.c
new file mode 100644
index 0000000..8538660
--- /dev/null
+++ b/third_party/FreeRTOS/Demo/CORTEX_LM3S811_KEIL/main.c
@@ -0,0 +1,399 @@
+/*

+    FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd. 

+    All rights reserved

+

+    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

+

+    ***************************************************************************

+     *                                                                       *

+     *    FreeRTOS provides completely free yet professionally developed,    *

+     *    robust, strictly quality controlled, supported, and cross          *

+     *    platform software that has become a de facto standard.             *

+     *                                                                       *

+     *    Help yourself get started quickly and support the FreeRTOS         *

+     *    project by purchasing a FreeRTOS tutorial book, reference          *

+     *    manual, or both from: http://www.FreeRTOS.org/Documentation        *

+     *                                                                       *

+     *    Thank you!                                                         *

+     *                                                                       *

+    ***************************************************************************

+

+    This file is part of the FreeRTOS distribution.

+

+    FreeRTOS is free software; you can redistribute it and/or modify it under

+    the terms of the GNU General Public License (version 2) as published by the

+    Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.

+

+    >>! NOTE: The modification to the GPL is included to allow you to distribute

+    >>! a combined work that includes FreeRTOS without being obliged to provide

+    >>! the source code for proprietary components outside of the FreeRTOS

+    >>! kernel.

+

+    FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY

+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

+    FOR A PARTICULAR PURPOSE.  Full license text is available from the following

+    link: http://www.freertos.org/a00114.html

+

+    1 tab == 4 spaces!

+

+    ***************************************************************************

+     *                                                                       *

+     *    Having a problem?  Start by reading the FAQ "My application does   *

+     *    not run, what could be wrong?"                                     *

+     *                                                                       *

+     *    http://www.FreeRTOS.org/FAQHelp.html                               *

+     *                                                                       *

+    ***************************************************************************

+

+    http://www.FreeRTOS.org - Documentation, books, training, latest versions,

+    license and Real Time Engineers Ltd. contact details.

+

+    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,

+    including FreeRTOS+Trace - an indispensable productivity tool, a DOS

+    compatible FAT file system, and our tiny thread aware UDP/IP stack.

+

+    http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High

+    Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS

+    licenses offer ticketed support, indemnification and middleware.

+

+    http://www.SafeRTOS.com - High Integrity Systems also provide a safety

+    engineered and independently SIL3 certified version for use in safety and

+    mission critical applications that require provable dependability.

+

+    1 tab == 4 spaces!

+*/

+

+

+/*

+ * This project contains an application demonstrating the use of the 

+ * FreeRTOS.org mini real time scheduler on the Luminary Micro LM3S811 Eval

+ * board.  See http://www.FreeRTOS.org for more information.

+ *

+ * main() simply sets up the hardware, creates all the demo application tasks, 

+ * then starts the scheduler.  http://www.freertos.org/a00102.html provides

+ * more information on the standard demo tasks. 

+ *

+ * In addition to a subset of the standard demo application tasks, main.c also

+ * defines the following tasks: 

+ *

+ * + A 'Print' task.  The print task is the only task permitted to access the

+ * LCD - thus ensuring mutual exclusion and consistent access to the resource.

+ * Other tasks do not access the LCD directly, but instead send the text they

+ * wish to display to the print task.  The print task spends most of its time

+ * blocked - only waking when a message is queued for display.

+ *

+ * + A 'Button handler' task.  The eval board contains a user push button that

+ * is configured to generate interrupts.  The interrupt handler uses a 

+ * semaphore to wake the button handler task - demonstrating how the priority 

+ * mechanism can be used to defer interrupt processing to the task level.  The

+ * button handler task sends a message both to the LCD (via the print task) and

+ * the UART where it can be viewed using a dumb terminal (via the UART to USB

+ * converter on the eval board).  NOTES:  The dumb terminal must be closed in 

+ * order to reflash the microcontroller.  A very basic interrupt driven UART

+ * driver is used that does not use the FIFO.  19200 baud is used.

+ *

+ * + A 'check' task.  The check task only executes every five seconds but has a

+ * high priority so is guaranteed to get processor time.  Its function is to

+ * check that all the other tasks are still operational and that no errors have

+ * been detected at any time.  If no errors have every been detected 'PASS' is

+ * written to the display (via the print task) - if an error has ever been

+ * detected the message is changed to 'FAIL'.  The position of the message is

+ * changed for each write.

+ */

+

+

+

+/* Environment includes. */

+#include "DriverLib.h"

+

+/* Scheduler includes. */

+#include "FreeRTOS.h"

+#include "task.h"

+#include "queue.h"

+#include "semphr.h"

+

+/* Demo app includes. */

+#include "integer.h"

+#include "PollQ.h"

+#include "semtest.h"

+#include "BlockQ.h"

+

+/* Delay between cycles of the 'check' task. */

+#define mainCHECK_DELAY						( ( portTickType ) 5000 / portTICK_RATE_MS )

+

+/* UART configuration - note this does not use the FIFO so is not very 

+efficient. */

+#define mainBAUD_RATE				( 19200 )

+#define mainFIFO_SET				( 0x10 )

+

+/* Demo task priorities. */

+#define mainQUEUE_POLL_PRIORITY		( tskIDLE_PRIORITY + 2 )

+#define mainCHECK_TASK_PRIORITY		( tskIDLE_PRIORITY + 3 )

+#define mainSEM_TEST_PRIORITY		( tskIDLE_PRIORITY + 1 )

+#define mainBLOCK_Q_PRIORITY		( tskIDLE_PRIORITY + 2 )

+

+/* Demo board specifics. */

+#define mainPUSH_BUTTON             GPIO_PIN_4

+

+/* Misc. */

+#define mainQUEUE_SIZE				( 3 )

+#define mainDEBOUNCE_DELAY			( ( portTickType ) 150 / portTICK_RATE_MS )

+#define mainNO_DELAY				( ( portTickType ) 0 )

+/*

+ * Configure the processor and peripherals for this demo. 

+ */

+static void prvSetupHardware( void );

+

+/*

+ * The 'check' task, as described at the top of this file.

+ */

+static void vCheckTask( void *pvParameters );

+

+/*

+ * The task that is woken by the ISR that processes GPIO interrupts originating

+ * from the push button.

+ */

+static void vButtonHandlerTask( void *pvParameters );

+

+/*

+ * The task that controls access to the LCD.

+ */

+static void vPrintTask( void *pvParameter );

+

+/* String that is transmitted on the UART. */

+static char *cMessage = "Task woken by button interrupt! --- ";

+static volatile char *pcNextChar;

+

+/* The semaphore used to wake the button handler task from within the GPIO

+interrupt handler. */

+xSemaphoreHandle xButtonSemaphore;

+

+/* The queue used to send strings to the print task for display on the LCD. */

+xQueueHandle xPrintQueue;

+

+/* Newer library version. */

+extern void UARTConfigSetExpClk(unsigned long ulBase, unsigned long ulUARTClk, unsigned long ulBaud, unsigned long ulConfig);

+/*-----------------------------------------------------------*/

+

+int main( void )

+{

+	/* Configure the clocks, UART and GPIO. */

+	prvSetupHardware();

+

+	/* Create the semaphore used to wake the button handler task from the GPIO

+	ISR. */

+	vSemaphoreCreateBinary( xButtonSemaphore );

+	xSemaphoreTake( xButtonSemaphore, 0 );

+

+	/* Create the queue used to pass message to vPrintTask. */

+	xPrintQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( char * ) );

+

+	/* Start the standard demo tasks. */

+	vStartIntegerMathTasks( tskIDLE_PRIORITY );

+	vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );

+	vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );

+	vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );

+

+	/* Start the tasks defined within the file. */

+	xTaskCreate( vCheckTask, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );

+	xTaskCreate( vButtonHandlerTask, "Status", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY + 1, NULL );

+	xTaskCreate( vPrintTask, "Print", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );

+

+	/* Start the scheduler. */

+	vTaskStartScheduler();

+

+	/* Will only get here if there was insufficient heap to start the 

+	scheduler. */

+

+	return 0;

+}

+/*-----------------------------------------------------------*/

+

+static void vCheckTask( void *pvParameters )

+{

+portBASE_TYPE xErrorOccurred = pdFALSE;

+portTickType xLastExecutionTime;

+const char *pcPassMessage = "PASS";

+const char *pcFailMessage = "FAIL";

+

+	/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()

+	works correctly. */

+	xLastExecutionTime = xTaskGetTickCount();

+

+	for( ;; )

+	{

+		/* Perform this check every mainCHECK_DELAY milliseconds. */

+		vTaskDelayUntil( &xLastExecutionTime, mainCHECK_DELAY );

+

+		/* Has an error been found in any task? */

+

+		if( xAreIntegerMathsTaskStillRunning() != pdTRUE )

+		{

+			xErrorOccurred = pdTRUE;

+		}

+	

+		if( xArePollingQueuesStillRunning() != pdTRUE )

+		{

+			xErrorOccurred = pdTRUE;

+		}

+	

+		if( xAreSemaphoreTasksStillRunning() != pdTRUE )

+		{

+			xErrorOccurred = pdTRUE;

+		}

+

+		if( xAreBlockingQueuesStillRunning() != pdTRUE )

+		{

+			xErrorOccurred = pdTRUE;

+		}

+

+		/* Send either a pass or fail message.  If an error is found it is

+		never cleared again.  We do not write directly to the LCD, but instead

+		queue a message for display by the print task. */

+		if( xErrorOccurred == pdTRUE )

+		{

+			xQueueSend( xPrintQueue, &pcFailMessage, portMAX_DELAY );

+		}

+		else

+		{

+			xQueueSend( xPrintQueue, &pcPassMessage, portMAX_DELAY );

+		}

+	}

+}

+/*-----------------------------------------------------------*/

+

+static void prvSetupHardware( void )

+{

+	/* Setup the PLL. */

+	SysCtlClockSet( SYSCTL_SYSDIV_10 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_6MHZ );

+

+	/* Setup the push button. */

+	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);

+    GPIODirModeSet(GPIO_PORTC_BASE, mainPUSH_BUTTON, GPIO_DIR_MODE_IN);

+	GPIOIntTypeSet( GPIO_PORTC_BASE, mainPUSH_BUTTON,GPIO_FALLING_EDGE );

+	IntPrioritySet( INT_GPIOC, configKERNEL_INTERRUPT_PRIORITY );

+	GPIOPinIntEnable( GPIO_PORTC_BASE, mainPUSH_BUTTON );

+	IntEnable( INT_GPIOC );

+

+

+

+	/* Enable the UART.  */

+	SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);

+	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);

+

+	/* Set GPIO A0 and A1 as peripheral function.  They are used to output the

+	UART signals. */

+	GPIODirModeSet( GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1, GPIO_DIR_MODE_HW );

+

+	/* Configure the UART for 8-N-1 operation. */

+	UARTConfigSetExpClk( UART0_BASE, SysCtlClockGet(), mainBAUD_RATE, UART_CONFIG_WLEN_8 | UART_CONFIG_PAR_NONE | UART_CONFIG_STOP_ONE );

+

+	/* We don't want to use the fifo.  This is for test purposes to generate

+	as many interrupts as possible. */

+	HWREG( UART0_BASE + UART_O_LCR_H ) &= ~mainFIFO_SET;

+

+	/* Enable Tx interrupts. */

+	HWREG( UART0_BASE + UART_O_IM ) |= UART_INT_TX;

+	IntPrioritySet( INT_UART0, configKERNEL_INTERRUPT_PRIORITY );

+	IntEnable( INT_UART0 );

+

+

+	/* Initialise the LCD> */

+    OSRAMInit( false );

+    OSRAMStringDraw("www.FreeRTOS.org", 0, 0);

+	OSRAMStringDraw("LM3S811 demo", 16, 1);

+}

+/*-----------------------------------------------------------*/

+

+static void vButtonHandlerTask( void *pvParameters )

+{

+const char *pcInterruptMessage = "Int";

+

+	for( ;; )

+	{

+		/* Wait for a GPIO interrupt to wake this task. */

+		while( xSemaphoreTake( xButtonSemaphore, portMAX_DELAY ) != pdPASS );

+

+		/* Start the Tx of the message on the UART. */

+		UARTIntDisable( UART0_BASE, UART_INT_TX );

+		{

+			pcNextChar = cMessage;

+

+			/* Send the first character. */

+			if( !( HWREG( UART0_BASE + UART_O_FR ) & UART_FR_TXFF ) )

+			{

+				HWREG( UART0_BASE + UART_O_DR ) = *pcNextChar;

+			}

+

+			pcNextChar++;

+		}

+		UARTIntEnable(UART0_BASE, UART_INT_TX);

+

+		/* Queue a message for the print task to display on the LCD. */

+		xQueueSend( xPrintQueue, &pcInterruptMessage, portMAX_DELAY );

+

+		/* Make sure we don't process bounces. */

+		vTaskDelay( mainDEBOUNCE_DELAY );

+		xSemaphoreTake( xButtonSemaphore, mainNO_DELAY );

+	}

+}

+

+/*-----------------------------------------------------------*/

+

+void vUART_ISR(void)

+{

+unsigned long ulStatus;

+

+	/* What caused the interrupt. */

+	ulStatus = UARTIntStatus( UART0_BASE, pdTRUE );

+

+	/* Clear the interrupt. */

+	UARTIntClear( UART0_BASE, ulStatus );

+

+	/* Was a Tx interrupt pending? */

+	if( ulStatus & UART_INT_TX )

+	{

+		/* Send the next character in the string.  We are not using the FIFO. */

+		if( *pcNextChar != NULL )

+		{

+			if( !( HWREG( UART0_BASE + UART_O_FR ) & UART_FR_TXFF ) )

+			{

+				HWREG( UART0_BASE + UART_O_DR ) = *pcNextChar;

+			}

+			pcNextChar++;

+		}

+	}

+}

+/*-----------------------------------------------------------*/

+

+void vGPIO_ISR( void )

+{

+portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;

+

+	/* Clear the interrupt. */

+	GPIOPinIntClear( GPIO_PORTC_BASE, mainPUSH_BUTTON );

+

+	/* Wake the button handler task. */

+	xSemaphoreGiveFromISR( xButtonSemaphore, &xHigherPriorityTaskWoken );

+	portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );

+}

+/*-----------------------------------------------------------*/

+

+static void vPrintTask( void *pvParameters )

+{

+char *pcMessage;

+unsigned portBASE_TYPE uxLine = 0, uxRow = 0;

+

+	for( ;; )

+	{

+		/* Wait for a message to arrive. */

+		xQueueReceive( xPrintQueue, &pcMessage, portMAX_DELAY );

+

+		/* Write the message to the LCD. */

+		uxRow++;

+		uxLine++;

+		OSRAMClear();

+		OSRAMStringDraw( pcMessage, uxLine & 0x3f, uxRow & 0x01);

+	}

+}

+