begriffs open source - cmsis-freertos/blob - Demo/msp430

1 /*

2 * FreeRTOS Kernel V10.1.1

4 *

5 * Permission is hereby granted, free of charge, to any person obtaining a copy of

6 * this software and associated documentation files (the "Software"), to deal in

7 * the Software without restriction, including without limitation the rights to

8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

9 * the Software, and to permit persons to whom the Software is furnished to do so,

10 * subject to the following conditions:

11 *

12 * The above copyright notice and this permission notice shall be included in all

13 * copies or substantial portions of the Software.

14 *

15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS

17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR

18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER

19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

21 *

22 * http://www.FreeRTOS.org

23 * http://aws.amazon.com/freertos

24 *

25 * 1 tab == 4 spaces!

26 */

27

28 /*-----------------------------------------------------------

29 * Characters on the LCD are used to simulate LED's. In this case the 'ParTest'

30 * is really operating on the LCD display.

31 *-----------------------------------------------------------*/

32

33 /*

34 * This demo is configured to execute on the ES449 prototyping board from

35 * SoftBaugh. The ES449 has a built in LCD display and a single built in user

36 * LED. Therefore, in place of flashing an LED, the 'flash' and 'check' tasks

37 * toggle '*' characters on the LCD. The left most '*' represents LED 0, the

38 * next LED 1, etc.

39 *

40 * There is a single genuine on board LED referenced as LED 10.

41 */

42

43

44 /* Scheduler includes. */

45 #include "FreeRTOS.h"

46 #include "task.h"

47

48 /* Demo application includes. */

49 #include "partest.h"

50

51 /* Constants required to setup the LCD. */

52 #define LCD_DIV_64 5

53

54 /* Constants required to access the "LED's". The LED segments are turned on

55 and off to generate '*' characters. */

56 #define partstNUM_LEDS ( ( unsigned char ) 6 )

57 #define partstSEGMENTS_ON ( ( unsigned char ) 0x0f )

58 #define partstSEGMENTS_OFF ( ( unsigned char ) 0x00 )

59

60 /* The LED number of the real on board LED, rather than a simulated LED. */

61 #define partstON_BOARD_LED ( ( unsigned portBASE_TYPE ) 10 )

62 #define mainON_BOARD_LED_BIT ( ( unsigned char ) 0x01 )

63

64 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */

65 unsigned char * const ucRHSSegments[ partstNUM_LEDS ] = { ( unsigned char * )0xa4,

66 ( unsigned char * )0xa2,

67 ( unsigned char * )0xa0,

68 ( unsigned char * )0x9e,

69 ( unsigned char * )0x9c,

70 ( unsigned char * )0x9a };

71

72 unsigned char * const ucLHSSegments[ partstNUM_LEDS ] = { ( unsigned char * )0xa3,

73 ( unsigned char * )0xa1,

74 ( unsigned char * )0x9f,

75 ( unsigned char * )0x9d,

76 ( unsigned char * )0x9b,

77 ( unsigned char * )0x99 };

78

79 /*

80 * Toggle the single genuine built in LED.

81 */

82 static void prvToggleOnBoardLED( void );

83

84 /*-----------------------------------------------------------*/

85

86 void vParTestInitialise( void )

87 {

88 /* Initialise the LCD hardware. */

89

90 /* Used for the onboard LED. */

91 P1DIR = 0x01;

92

93 // Setup Basic Timer for LCD operation

94 BTCTL = (LCD_DIV_64+0x23);

95

96 // Setup port functions

97 P1SEL = 0x32;

98 P2SEL = 0x00;

99 P3SEL = 0x00;

100 P4SEL = 0xFC;

101 P5SEL = 0xFF;

102

103 /* Initialise all segments to off. */

104 LCDM1 = partstSEGMENTS_OFF;

105 LCDM2 = partstSEGMENTS_OFF;

106 LCDM3 = partstSEGMENTS_OFF;

107 LCDM4 = partstSEGMENTS_OFF;

108 LCDM5 = partstSEGMENTS_OFF;

109 LCDM6 = partstSEGMENTS_OFF;

110 LCDM7 = partstSEGMENTS_OFF;

111 LCDM8 = partstSEGMENTS_OFF;

112 LCDM9 = partstSEGMENTS_OFF;

113 LCDM10 = partstSEGMENTS_OFF;

114 LCDM11 = partstSEGMENTS_OFF;

115 LCDM12 = partstSEGMENTS_OFF;

116 LCDM13 = partstSEGMENTS_OFF;

117 LCDM14 = partstSEGMENTS_OFF;

118 LCDM15 = partstSEGMENTS_OFF;

119 LCDM16 = partstSEGMENTS_OFF;

120 LCDM17 = partstSEGMENTS_OFF;

121 LCDM18 = partstSEGMENTS_OFF;

122 LCDM19 = partstSEGMENTS_OFF;

123 LCDM20 = partstSEGMENTS_OFF;

124

125 /* Setup LCD control. */

126 LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);

127 }

128 /*-----------------------------------------------------------*/

129

130 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )

131 {

132 /* Set or clear the output [in this case show or hide the '*' character. */

133 if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )

134 {

135 vTaskSuspendAll();

136 {

137 if( xValue )

138 {

139 /* Turn on the segments required to show the '*'. */

140 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;

141 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;

142 }

143 else

144 {

145 /* Turn off all the segments. */

146 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;

147 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;

148 }

149 }

150 xTaskResumeAll();

151 }

152 }

153 /*-----------------------------------------------------------*/

154

155 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )

156 {

157 if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )

158 {

159 vTaskSuspendAll();

160 {

161 /* If the '*' is already showing - hide it. If it is not already

162 showing then show it. */

163 if( *( ucRHSSegments[ uxLED ] ) )

164 {

165 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;

166 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;

167 }

168 else

169 {

170 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;

171 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;

172 }

173 }

174 xTaskResumeAll();

175 }

176 else

177 {

178 if( uxLED == partstON_BOARD_LED )

179 {

180 /* The request related to the genuine on board LED. */

181 prvToggleOnBoardLED();

182 }

183 }

184 }

185 /*-----------------------------------------------------------*/

186

187 static void prvToggleOnBoardLED( void )

188 {

189 static unsigned short sState = pdFALSE;

190

191 /* Toggle the state of the single genuine on board LED. */

192 if( sState )

193 {

194 P1OUT |= mainON_BOARD_LED_BIT;

195 }

196 else

197 {

198 P1OUT &= ~mainON_BOARD_LED_BIT;

199 }

200

201 sState = !sState;

202 }

203 /*-----------------------------------------------------------*/

204

205