begriffs open source - cmsis-freertos/blob - Demo/PIC18

1 /*

4

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

6

7 This file is part of the FreeRTOS distribution.

8

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

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

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

12

13 ***************************************************************************

14 >>! NOTE: The modification to the GPL is included to allow you to !<<

15 >>! distribute a combined work that includes FreeRTOS without being !<<

16 >>! obliged to provide the source code for proprietary components !<<

17 >>! outside of the FreeRTOS kernel. !<<

18 ***************************************************************************

19

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

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

22 FOR A PARTICULAR PURPOSE. Full license text is available on the following

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

24

25 ***************************************************************************

26 * *

27 * FreeRTOS provides completely free yet professionally developed, *

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

29 * platform software that is more than just the market leader, it *

30 * is the industry's de facto standard. *

31 * *

32 * Help yourself get started quickly while simultaneously helping *

33 * to support the FreeRTOS project by purchasing a FreeRTOS *

34 * tutorial book, reference manual, or both: *

35 * http://www.FreeRTOS.org/Documentation *

36 * *

37 ***************************************************************************

38

39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading

40 the FAQ page "My application does not run, what could be wrong?". Have you

41 defined configASSERT()?

42

43 http://www.FreeRTOS.org/support - In return for receiving this top quality

44 embedded software for free we request you assist our global community by

45 participating in the support forum.

46

47 http://www.FreeRTOS.org/training - Investing in training allows your team to

48 be as productive as possible as early as possible. Now you can receive

49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers

50 Ltd, and the world's leading authority on the world's leading RTOS.

51

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

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

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

55

56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.

57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

58

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

60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS

61 licenses offer ticketed support, indemnification and commercial middleware.

62

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

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

65 mission critical applications that require provable dependability.

66

67 1 tab == 4 spaces!

68 */

69

70 /*

71 Changes from V3.0.0

72 + Added functionality to only call vTaskSwitchContext() once

73 when handling multiple interruptsources in a single interruptcall.

74

75 + Included Filenames changed to a .c extension to allow stepping through

76 code using F7.

77

78 Changes from V3.0.1

79 */

80

81 #include <pic.h>

82

83 /* Scheduler include files. */

84 #include <FreeRTOS.h>

85 #include <task.h>

86 #include <queue.h>

87

88 static bit uxSwitchRequested;

89

90 /*

91 * Vector for the ISR.

92 */

93 void pointed Interrupt()

94 {

95 /*

96 * Save the context of the current task.

97 */

98 portSAVE_CONTEXT( portINTERRUPTS_FORCED );

99

100 /*

101 * No contextswitch requested yet

102 */

103 uxSwitchRequested = pdFALSE;

104

105 /*

106 * Was the interrupt the FreeRTOS SystemTick?

107 */

108 #include <libFreeRTOS/Drivers/Tick/isrTick.c>

109

110 /*******************************************************************************

111 ** DO NOT MODIFY ANYTHING ABOVE THIS LINE

112 ********************************************************************************

113 ** Enter the includes for the ISR-code of the FreeRTOS drivers below.

114 **

115 ** You cannot use local variables. Alternatives are:

116 ** - Use static variables (Global RAM usage increases)

117 ** - Call a function (Additional cycles are needed)

118 ** - Use unused SFR's (preferred, no additional overhead)

119 ** See "../Serial/isrSerialTx.c" for an example of this last option

120 *******************************************************************************/

121

122

123

124 /*

125 * Was the interrupt a byte being received?

126 */

127 #include "../Serial/isrSerialRx.c"

128

129

130 /*

131 * Was the interrupt the Tx register becoming empty?

132 */

133 #include "../Serial/isrSerialTx.c"

134

135

136

137 /*******************************************************************************

138 ** DO NOT MODIFY ANYTHING BELOW THIS LINE

139 *******************************************************************************/

140 /*

141 * Was a contextswitch requested by one of the

142 * interrupthandlers?

143 */

144 if ( uxSwitchRequested )

145 {

146 vTaskSwitchContext();

147 }

148

149 /*

150 * Restore the context of the (possibly other) task.

151 */

152 portRESTORE_CONTEXT();

153

154 #pragma asmline retfie 0

155 }