/*\r
- FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.\r
+ FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.\r
+ \r
\r
***************************************************************************\r
- * *\r
- * If you are: *\r
- * *\r
- * + New to FreeRTOS, *\r
- * + Wanting to learn FreeRTOS or multitasking in general quickly *\r
- * + Looking for basic training, *\r
- * + Wanting to improve your FreeRTOS skills and productivity *\r
- * *\r
- * then take a look at the FreeRTOS books - available as PDF or paperback *\r
- * *\r
- * "Using the FreeRTOS Real Time Kernel - a Practical Guide" *\r
- * http://www.FreeRTOS.org/Documentation *\r
- * *\r
- * A pdf reference manual is also available. Both are usually delivered *\r
- * to your inbox within 20 minutes to two hours when purchased between 8am *\r
- * and 8pm GMT (although please allow up to 24 hours in case of *\r
- * exceptional circumstances). Thank you for your support! *\r
- * *\r
+ * *\r
+ * FreeRTOS tutorial books are available in pdf and paperback. *\r
+ * Complete, revised, and edited pdf reference manuals are also *\r
+ * available. *\r
+ * *\r
+ * Purchasing FreeRTOS documentation will not only help you, by *\r
+ * ensuring you get running as quickly as possible and with an *\r
+ * in-depth knowledge of how to use FreeRTOS, it will also help *\r
+ * the FreeRTOS project to continue with its mission of providing *\r
+ * professional grade, cross platform, de facto standard solutions *\r
+ * for microcontrollers - completely free of charge! *\r
+ * *\r
+ * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *\r
+ * *\r
+ * Thank you for using FreeRTOS, and thank you for your support! *\r
+ * *\r
***************************************************************************\r
\r
+\r
This file is part of the FreeRTOS distribution.\r
\r
FreeRTOS is free software; you can redistribute it and/or modify it under\r
the terms of the GNU General Public License (version 2) as published by the\r
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
- ***NOTE*** The exception to the GPL is included to allow you to distribute\r
- a combined work that includes FreeRTOS without being obliged to provide the\r
- source code for proprietary components outside of the FreeRTOS kernel.\r
- FreeRTOS is distributed in the hope that it will be useful, but WITHOUT\r
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for\r
- more details. You should have received a copy of the GNU General Public \r
- License and the FreeRTOS license exception along with FreeRTOS; if not it \r
- can be viewed here: http://www.freertos.org/a00114.html and also obtained \r
+ >>>NOTE<<< The modification to the GPL is included to allow you to\r
+ distribute a combined work that includes FreeRTOS without being obliged to\r
+ provide the source code for proprietary components outside of the FreeRTOS\r
+ kernel. FreeRTOS is distributed in the hope that it will be useful, but\r
+ WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for\r
+ more details. You should have received a copy of the GNU General Public\r
+ License and the FreeRTOS license exception along with FreeRTOS; if not it\r
+ can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
by writing to Richard Barry, contact details for whom are available on the\r
FreeRTOS WEB site.\r
\r
1 tab == 4 spaces!\r
+ \r
+ ***************************************************************************\r
+ * *\r
+ * Having a problem? Start by reading the FAQ "My application does *\r
+ * not run, what could be wrong? *\r
+ * *\r
+ * http://www.FreeRTOS.org/FAQHelp.html *\r
+ * *\r
+ ***************************************************************************\r
\r
- http://www.FreeRTOS.org - Documentation, latest information, license and\r
- contact details.\r
-\r
- http://www.SafeRTOS.com - A version that is certified for use in safety\r
- critical systems.\r
-\r
- http://www.OpenRTOS.com - Commercial support, development, porting,\r
- licensing and training services.\r
+ \r
+ http://www.FreeRTOS.org - Documentation, training, latest information, \r
+ license and contact details.\r
+ \r
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
+ including FreeRTOS+Trace - an indispensable productivity tool.\r
+\r
+ Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell \r
+ the code with commercial support, indemnification, and middleware, under \r
+ the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also\r
+ provide a safety engineered and independently SIL3 certified version under \r
+ the SafeRTOS brand: http://www.SafeRTOS.com.\r
*/\r
\r
#include <device.h>\r
#define serialSTRING_DELAY_TICKS ( portMAX_DELAY )\r
/*---------------------------------------------------------------------------*/\r
\r
-CY_ISR_PROTO(vUartRxISR);\r
-CY_ISR_PROTO(vUartTxISR);\r
+CY_ISR_PROTO( vUartRxISR );\r
+CY_ISR_PROTO( vUartTxISR );\r
/*---------------------------------------------------------------------------*/\r
\r
static xQueueHandle xSerialTxQueue = NULL;\r
UART_1_SetTxInterruptMode( 0 );\r
\r
/* Both configured successfully. */\r
- return (xComPortHandle)( xSerialTxQueue && xSerialRxQueue );\r
+ return ( xComPortHandle )( xSerialTxQueue && xSerialRxQueue );\r
}\r
/*---------------------------------------------------------------------------*/\r
\r
void vSerialPutString( xComPortHandle pxPort, const signed char * const pcString, unsigned short usStringLength )\r
{\r
unsigned short usIndex = 0;\r
- for ( usIndex = 0; usIndex < usStringLength; usIndex++ )\r
+\r
+ for( usIndex = 0; usIndex < usStringLength; usIndex++ )\r
{\r
/* Check for pre-mature end of line. */\r
- if ( '\0' == pcString[ usIndex ] )\r
+ if( '\0' == pcString[ usIndex ] )\r
{\r
break;\r
}\r
\r
/* Send out, one character at a time. */\r
- if ( pdTRUE != xSerialPutChar( NULL, pcString[ usIndex ], serialSTRING_DELAY_TICKS ) )\r
+ if( pdTRUE != xSerialPutChar( NULL, pcString[ usIndex ], serialSTRING_DELAY_TICKS ) )\r
{\r
/* Failed to send, this will be picked up in the receive comtest task. */\r
}\r
signed portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, signed char *pcRxedChar, portTickType xBlockTime )\r
{\r
portBASE_TYPE xReturn = pdFALSE;\r
- if ( pdTRUE == xQueueReceive( xSerialRxQueue, pcRxedChar, xBlockTime ) )\r
+\r
+ if( pdTRUE == xQueueReceive( xSerialRxQueue, pcRxedChar, xBlockTime ) )\r
{\r
/* Picked up a character. */\r
xReturn = pdTRUE;\r
portBASE_TYPE xReturn = pdFALSE;\r
\r
/* The ISR is processing characters is so just add to the end of the queue. */\r
- if ( pdTRUE == xQueueSend( xSerialTxQueue, &cOutChar, xBlockTime ) )\r
+ if( pdTRUE == xQueueSend( xSerialTxQueue, &cOutChar, xBlockTime ) )\r
{ \r
xReturn = pdTRUE;\r
}\r
}\r
\r
/* Make sure that the interrupt will fire in the case where:\r
- * Currently sending so the Tx Complete will fire.\r
- * Not sending so the Empty will fire.\r
- */\r
+ Currently sending so the Tx Complete will fire.\r
+ Not sending so the Empty will fire. */\r
taskENTER_CRITICAL();\r
UART_1_SetTxInterruptMode( UART_1_TX_STS_COMPLETE | UART_1_TX_STS_FIFO_EMPTY );\r
taskEXIT_CRITICAL();\r
\r
CY_ISR(vUartRxISR)\r
{\r
-portBASE_TYPE xTaskWoken = pdFALSE;\r
+portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;\r
volatile unsigned char ucStatus = 0;\r
signed char cInChar = 0;\r
unsigned long ulMask = 0;\r
ucStatus = UART_1_ReadRxStatus();\r
\r
/* Only interested in a character being received. */\r
- if ( 0 != ( ucStatus & UART_1_RX_STS_FIFO_NOTEMPTY ) )\r
+ if( 0 != ( ucStatus & UART_1_RX_STS_FIFO_NOTEMPTY ) )\r
{\r
/* Get the character. */\r
cInChar = UART_1_GetChar();\r
ulMask = portSET_INTERRUPT_MASK_FROM_ISR();\r
{\r
/* Try to deliver the character. */\r
- if ( pdTRUE != xQueueSendFromISR( xSerialRxQueue, &cInChar, &xTaskWoken ) )\r
+ if( pdTRUE != xQueueSendFromISR( xSerialRxQueue, &cInChar, &xHigherPriorityTaskWoken ) )\r
{\r
/* Run out of space. */\r
}\r
portCLEAR_INTERRUPT_MASK_FROM_ISR( ulMask );\r
}\r
\r
- /* If we delivered the character then a context switch might be required. */\r
- portEND_SWITCHING_ISR( xTaskWoken );\r
+ /* If we delivered the character then a context switch might be required.\r
+ xHigherPriorityTaskWoken was set to pdFALSE on interrupt entry. If calling \r
+ xQueueSendFromISR() caused a task to unblock, and the unblocked task has\r
+ a priority equal to or higher than the currently running task (the task this\r
+ ISR interrupted), then xHigherPriorityTaskWoken will have been set to pdTRUE and\r
+ portEND_SWITCHING_ISR() will request a context switch to the newly unblocked\r
+ task. */\r
+ portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );\r
}\r
/*---------------------------------------------------------------------------*/\r
\r
CY_ISR(vUartTxISR)\r
{\r
-portBASE_TYPE xTaskWoken = pdFALSE;\r
+portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;\r
volatile unsigned char ucStatus = 0;\r
signed char cOutChar = 0;\r
unsigned long ulMask = 0;\r
ucStatus = UART_1_ReadTxStatus();\r
\r
/* Check to see whether this is a genuine interrupt. */\r
- if ( ( 0 != ( ucStatus & UART_1_TX_STS_COMPLETE ) )\r
- || ( 0 != ( ucStatus & UART_1_TX_STS_FIFO_EMPTY ) ) )\r
+ if( ( 0 != ( ucStatus & UART_1_TX_STS_COMPLETE ) ) || ( 0 != ( ucStatus & UART_1_TX_STS_FIFO_EMPTY ) ) )\r
{ \r
/* Mask off the other RTOS interrupts to interact with the queue. */\r
ulMask = portSET_INTERRUPT_MASK_FROM_ISR();\r
{\r
- if ( pdTRUE == xQueueReceiveFromISR( xSerialTxQueue, &cOutChar, &xTaskWoken ) )\r
+ if( pdTRUE == xQueueReceiveFromISR( xSerialTxQueue, &cOutChar, &xHigherPriorityTaskWoken ) )\r
{\r
/* Send the next character. */\r
UART_1_PutChar( cOutChar ); \r
\r
/* If we are firing, then the only interrupt we are interested in\r
- * is the Complete. The application code will add the Empty interrupt\r
- * when there is something else to be done.\r
- */\r
+ is the Complete. The application code will add the Empty interrupt\r
+ when there is something else to be done. */\r
UART_1_SetTxInterruptMode( UART_1_TX_STS_COMPLETE );\r
}\r
else\r
{\r
- /* There is no work left so disable the interrupt\r
- * until the application puts more into the queue.\r
- */\r
+ /* There is no work left so disable the interrupt until the application \r
+ puts more into the queue. */\r
UART_1_SetTxInterruptMode( 0 );\r
}\r
}\r
portCLEAR_INTERRUPT_MASK_FROM_ISR( ulMask );\r
}\r
\r
- /* If we delivered the character then a context switch might be required. */\r
- portEND_SWITCHING_ISR( xTaskWoken );\r
+ /* If we delivered the character then a context switch might be required.\r
+ xHigherPriorityTaskWoken was set to pdFALSE on interrupt entry. If calling \r
+ xQueueSendFromISR() caused a task to unblock, and the unblocked task has\r
+ a priority equal to or higher than the currently running task (the task this\r
+ ISR interrupted), then xHigherPriorityTaskWoken will have been set to pdTRUE and\r
+ portEND_SWITCHING_ISR() will request a context switch to the newly unblocked\r
+ task. */\r
+ portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );\r
}\r
/*---------------------------------------------------------------------------*/\r
projects / freertos / blobdiff