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| author | richardbarry <richardbarry@1d2547de-c912-0410-9cb9-b8ca96c0e9e2> | 2006-05-02 09:39:15 +0000 |
|---|---|---|
| committer | richardbarry <richardbarry@1d2547de-c912-0410-9cb9-b8ca96c0e9e2> | 2006-05-02 09:39:15 +0000 |
| commit | d7dbc0659d07553731bf22aa298adcf5e5e7774d (patch) | |
| tree | f263718a33f9a800d8ad8bfae7d7728cc24cff76 /Demo/PIC18_WizC/serial/isrSerialRx.c | |
| parent | 007f75782c094f12e9fb8832dddb6b06bce236f8 (diff) | |
| download | freertos-d7dbc0659d07553731bf22aa298adcf5e5e7774d.tar.gz freertos-d7dbc0659d07553731bf22aa298adcf5e5e7774d.tar.bz2 freertos-d7dbc0659d07553731bf22aa298adcf5e5e7774d.tar.xz | |
First version under SVN is V4.0.1
git-svn-id: https://freertos.svn.sourceforge.net/svnroot/freertos/trunk@4 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Diffstat (limited to 'Demo/PIC18_WizC/serial/isrSerialRx.c')
| -rw-r--r-- | Demo/PIC18_WizC/serial/isrSerialRx.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/Demo/PIC18_WizC/serial/isrSerialRx.c b/Demo/PIC18_WizC/serial/isrSerialRx.c new file mode 100644 index 00000000..3b7b69bd --- /dev/null +++ b/Demo/PIC18_WizC/serial/isrSerialRx.c @@ -0,0 +1,106 @@ +/*
+ FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.
+
+ 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 as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ 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. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with FreeRTOS; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ A special exception to the GPL can be applied should you wish to distribute
+ a combined work that includes FreeRTOS, without being obliged to provide
+ the source code for any proprietary components. See the licensing section
+ of http://www.FreeRTOS.org for full details of how and when the exception
+ can be applied.
+
+ ***************************************************************************
+ See http://www.FreeRTOS.org for documentation, latest information, license
+ and contact details. Please ensure to read the configuration and relevant
+ port sections of the online documentation.
+ ***************************************************************************
+*/
+
+/*
+Changes from V3.0.0
+ + ISRcode pulled inline to reduce stack-usage.
+
+ + Added functionality to only call vTaskSwitchContext() once
+ when handling multiple interruptsources in a single interruptcall.
+
+ + Filename changed to a .c extension to allow stepping through code
+ using F7.
+
+Changes from V3.0.1
+*/
+
+#ifndef _FREERTOS_SERIAL_ISRSERIALRX_C
+#define _FREERTOS_SERIAL_ISRSERIALRX_C
+
+#define serCONTINUOUS_RX ( 1 )
+#define serCLEAR_OVERRUN ( 0 )
+
+{
+ /*
+ * Was the interrupt a byte being received?
+ */
+ if( bRCIF && bRCIE)
+ {
+ /*
+ * Queue to interface between comms API and interrupt routine.
+ */
+ extern xQueueHandle xRxedChars;
+
+ /*
+ * Because we are not allowed to use local variables here,
+ * PRODL is (ab)used as temporary storage. This is allowed
+ * because this SFR will be restored before exiting the ISR.
+ */
+ extern portCHAR cChar;
+ #pragma locate cChar &PRODL
+
+ /*
+ * If there was a framing error, just get and ignore
+ * the character
+ */
+ if( bFERR )
+ {
+ cChar = RCREG;
+ }
+ else
+ {
+ /*
+ * Get the character and post it on the queue of Rxed
+ * characters. If the post causes a task to wake ask
+ * for a context switch as the woken task may have a
+ * higher priority than the task we have interrupted.
+ */
+ cChar = RCREG;
+
+ /*
+ * Clear any overrun errors.
+ */
+ if( bOERR )
+ {
+ bCREN = serCLEAR_OVERRUN;
+ bCREN = serCONTINUOUS_RX;
+ }
+
+ if( xQueueSendFromISR( xRxedChars, ( const void * ) &cChar, pdFALSE ) )
+ {
+ uxSwitchRequested = pdTRUE;
+ }
+ }
+ }
+}
+
+#endif /* _FREERTOS_SERIAL_ISRSERIALRX_C */
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