FreeCalypso > hg > fc-magnetite
annotate src/cs/drivers/drv_app/buzzer/buzzer.c @ 248:35b17d54773d
helpers: build-date helper program written
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 03 Aug 2017 04:24:06 +0000 |
parents | 945cf7f506b2 |
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1 /* |
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2 * BUZZER.C |
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3 * |
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4 * Buzzer driver |
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5 * |
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6 * Target : ARM |
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7 * |
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8 * Copyright (c) Texas Instruments 2000 |
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9 * |
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10 */ |
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11 |
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12 |
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13 #include "main/sys_types.h" |
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14 #include "memif/mem.h" |
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15 #include "armio/armio.h" |
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16 #include "buzzer.h" |
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17 #include "timer/timer.h" |
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18 |
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19 #include "board.cfg" |
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20 |
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21 /* |
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22 * Initialize buzzer |
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23 * |
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24 */ |
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25 void BZ_Init(void) |
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26 { |
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27 } |
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28 |
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29 /* |
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30 * BZ_Enable / BZ_Disable |
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31 * |
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32 * Enable / disable buzzer |
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33 * |
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34 * The buzzer uses timer 1 |
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35 */ |
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36 void BZ_Enable(void) |
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37 { |
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38 *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) |= BZ_ON; |
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39 } |
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40 |
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41 void BZ_Disable(void) |
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42 { |
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43 *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) &= ~BZ_ON; |
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44 } |
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45 |
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46 /* |
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47 * BZ_Tone |
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48 * |
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49 * Changes the timer count to set the tone frequency in Hz |
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50 * |
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51 * 58 ticks= 1 ms, which give a frequency of 500 Hz |
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52 * |
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53 * |
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54 */ |
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55 void BZ_Tone(int f) |
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56 { |
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57 if (f > 255) |
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58 { |
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59 f = 255; |
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60 } |
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61 *((volatile SYS_UWORD16 *) ARMIO_LOAD_TIM) = f; |
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62 } |
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63 |
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64 /* |
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65 * BZ_Volume |
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66 * |
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67 * Changes the buzzer volume |
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68 * |
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69 */ |
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70 void BZ_Volume(int v) |
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71 { |
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72 // the level range is 0 up to 63 |
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73 if (v > 63) |
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74 { |
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75 v = 63; |
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76 } |
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77 *((volatile SYS_UWORD16 *) BZ_LEVEL) = v; |
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78 } |
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79 |
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80 /* |
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81 * BZ_KeyBeep_ON |
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82 * |
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83 * Audio feedback to user after keybeep |
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84 * |
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85 */ |
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86 void BZ_KeyBeep_ON(void) |
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87 { |
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88 volatile int i; |
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89 |
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90 BZ_Init (); |
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91 BZ_Volume (255); |
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92 BZ_Enable (); |
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93 BZ_Tone (50); |
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94 |
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95 for (i = 0; i < 17000; i++) |
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96 ; |
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97 |
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98 BZ_Disable (); |
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99 } |
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100 |
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101 |
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102 |
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103 /* |
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104 * BZ_KeyBeep_OFF |
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105 * |
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106 * Audio feedback to user after keybeep |
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107 * |
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108 */ |
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109 void BZ_KeyBeep_OFF(void) |
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110 { |
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111 volatile int i; |
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112 |
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113 BZ_Init (); |
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114 BZ_Volume (255); |
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115 BZ_Enable (); |
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116 BZ_Tone (100); |
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117 |
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118 for (i = 0; i < 17000; i++) |
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119 ; |
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120 |
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121 BZ_Disable (); |
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122 } |
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123 |
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124 |
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125 |
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126 /* |
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127 * LT_Enable / LT_Disable |
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128 * |
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129 * Enable / disable LCD lighting |
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130 * |
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131 */ |
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132 void LT_Enable(void) |
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133 { |
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134 #if (BOARD == 7 || BOARD == 8 || BOARD == 9) |
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135 *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) |= LT_ON; |
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136 #endif |
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137 } |
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138 void LT_Disable(void) |
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139 { |
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140 #if (BOARD == 7 || BOARD == 8 || BOARD == 9) |
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141 *((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) &= ~LT_ON; |
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142 #endif |
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143 } |
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144 |
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145 |
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146 /* |
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147 * LT_Level |
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148 * |
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149 * Set LCD display level |
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150 */ |
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151 void LT_Level(SYS_WORD8 level) |
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152 { |
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153 if (level > 63) level=63; |
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154 |
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155 // the level range is 0 up to 63 |
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156 *((volatile SYS_UWORD16 *) LT_LEVEL) = level; |
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157 } |
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158 |
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159 |
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160 /* |
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161 * LT_Status |
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162 * |
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163 * Return lighting status for sleep manager |
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164 * |
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165 */ |
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166 SYS_BOOL LT_Status(void) |
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167 { |
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168 #if (BOARD == 7 || BOARD == 8 || BOARD == 9) |
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169 if (*((volatile SYS_UWORD16 *) ARMIO_PWM_CNTL) & LT_ON) |
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170 return(1); // the light is on |
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171 else |
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172 return(0); |
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173 #endif |
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174 |
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175 return(0); |
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176 |
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177 } |