1 | /*
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2 | =============================================================================
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3 | barbadj.c -- MIDAS-VII -- GLC bar graph drivers
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4 | Version 8 -- 1988-10-27 -- D.N. Lynx Crowe
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5 |
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6 | BarBadj(bar, val)
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7 | short bar, val;
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8 |
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9 | Adjusts a bottom-zero bar graph, 'bar',
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10 | to read 'val'.
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11 |
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12 | BarBset(bar, val)
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13 | short bar, val;
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14 |
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15 | Sets a bottom-zero bar graph, 'bar',
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16 | to an intial value, 'val'.
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17 |
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18 | BarCadj(bar, val)
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19 | short bar, val;
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20 |
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21 | Adjusts a centered-zero bar graph, 'bar',
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22 | to read 'val'.
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23 |
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24 | BarCset(bar, val)
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25 | short bar, val;
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26 |
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27 | Sets a centered-zero bar graph, 'bar',
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28 | to an intial value, 'val'.
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29 | =============================================================================
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30 | */
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31 |
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32 | #include "all.h"
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33 |
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34 | extern int16_t BarBcur[];
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35 | extern int16_t BarCcur[];
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36 |
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37 | /* left-most bar columns */
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38 |
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39 | int16_t BarCols[14] = { 2, 8, 14, 20, 26, 32, 38, 44, 50, 56, 62, 68, 74, 80 };
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40 |
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41 | /* bar dot data */
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42 |
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43 | int16_t BarDots[3] = { 0x1C, 0xFC, 0xE0 };
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44 |
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45 | #include "glcbars.h" /* bar graph driver constant definitions */
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46 |
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47 | /* |
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48 |
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49 | */
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50 |
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51 | /*
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52 | =============================================================================
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53 | BarBadj() -- adjust a bottom-zero bar graph to a new value
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54 | =============================================================================
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55 | */
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56 |
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57 | void BarBadj(int16_t bar, int16_t val)
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58 | {
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59 | register int16_t bardot, barpos, curdif;
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60 | register uint16_t baradr;
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61 | int16_t barcol, bardif, curbar, i, newbar;
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62 |
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63 | newbar = BarBLn[val]; /* look up the new bar position */
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64 | curbar = BarBcur[bar]; /* get the current bar position */
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65 | bardif = newbar - curbar; /* calculate how far to move the bar */
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66 |
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67 | if (0 EQ bardif) /* done if bar doesn't need to be moved */
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68 | return;
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69 |
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70 | GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
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71 | barcol = BarCols[bar]; /* find leftmost column of bar */
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72 |
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73 | if (bardif > 0) { /* increasing value */
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74 |
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75 | /* calculate initial GLC RAM write address */
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76 |
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77 | baradr = barcol + (85 * (63 - (curbar + 1))) + G_PLANE2;
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78 |
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79 | LCD_WC = G_CRSMUP; /* set cursor motion "up" */
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80 |
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81 | for (i = 0; i < 3; i++) { /* for each bar column ... */
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82 |
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83 | curdif = bardif; /* set difference counter */
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84 | bardot = BarDots[i]; /* get the column dot value */
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85 |
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86 | LCD_WC = G_CRSWR; /* set cursor address */
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87 | LCD_WD = baradr & 0xFF;
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88 | LCD_WD = (baradr >> 8) & 0xFF;
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89 |
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90 | ++baradr; /* update GLC start address */
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91 |
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92 | LCD_WC = G_MWRITE; /* setup to write */
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93 |
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94 | while (curdif--) /* write new dots */
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95 | LCD_WD = bardot;
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96 | }
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97 | /* |
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98 |
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99 | */
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100 | } else { /* decreasing value */
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101 |
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102 | /* calculate initial GLC RAM write address */
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103 |
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104 | baradr = barcol + (85 * (63 - curbar)) + G_PLANE2;
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105 |
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106 | LCD_WC = G_CRSMDN; /* set cursor motion "down" */
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107 |
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108 | for (i = 0; i < 3; i++) { /* for each bar column ... */
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109 |
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110 | curdif = -bardif; /* set difference counter */
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111 |
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112 | LCD_WC = G_CRSWR; /* set cursor address */
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113 | LCD_WD = baradr & 0xFF;
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114 | LCD_WD = (baradr >> 8) & 0xFF;
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115 |
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116 | ++baradr; /* update GLC start address */
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117 |
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118 | LCD_WC = G_MWRITE; /* setup to write */
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119 |
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120 | while (curdif--) /* erase old dots */
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121 | LCD_WD = 0x00;
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122 | }
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123 | }
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124 |
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125 | LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
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126 | GLCcurs(G_OFF); /* turn off the cursor */
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127 |
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128 | BarBcur[bar] = newbar; /* update current bar position */
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129 | }
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130 |
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131 | /* |
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132 |
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133 | */
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134 |
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135 | /*
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136 | =============================================================================
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137 | BarBset() -- set a bottom-zero bar graph to an initial value
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138 | =============================================================================
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139 | */
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140 |
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141 | void BarBset(int16_t bar, int16_t val)
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142 | {
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143 | register int16_t bardot, barpos, newbar;
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144 | register uint16_t baradr;
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145 | int16_t barcol, i;
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146 |
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147 | newbar = BarBLn[val]; /* look up the new bar position */
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148 | barcol = BarCols[bar]; /* find leftmost column of bar */
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149 |
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150 | GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
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151 |
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152 | /* calculate initial GLC RAM write address */
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153 |
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154 | baradr = barcol + (85 * (63 - BBase)) + G_PLANE2;
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155 |
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156 | LCD_WC = G_CRSMUP; /* set cursor motion = "up" */
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157 |
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158 | for (i = 0; i < 3; i++) { /* for each bar column ... */
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159 |
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160 | bardot = BarDots[i]; /* get the column dot value */
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161 | barpos = BBase; /* get base of bar */
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162 |
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163 | LCD_WC = G_CRSWR; /* set cursor address */
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164 | LCD_WD = baradr & 0xFF;
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165 | LCD_WD = (baradr >> 8) & 0xFF;
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166 |
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167 | ++baradr; /* update GLC start address */
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168 |
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169 | LCD_WC = G_MWRITE; /* setup to write */
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170 |
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171 | while (barpos++ LE newbar) /* write new dots */
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172 | LCD_WD = bardot;
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173 |
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174 | while (barpos++ < BTop) /* erase old dots */
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175 | LCD_WD = 0x00;
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176 | }
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177 |
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178 | LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
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179 | GLCcurs(G_OFF); /* turn off the cursor */
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180 |
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181 | BarBcur[bar] = newbar; /* update current bar position */
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182 | }
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183 |
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184 | /* |
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185 |
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186 | */
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187 |
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188 | /*
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189 | =============================================================================
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190 | BarCadj() -- adjust a centered-zero bar graph to a new value
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191 | =============================================================================
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192 | */
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193 |
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194 | void BarCadj(int16_t bar, int16_t val)
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195 | {
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196 | register int16_t bardot, barpos, newbar;
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197 | register uint16_t baradr;
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198 | int16_t barcol, bardif, curbar, i;
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199 |
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200 | newbar = BarCLn[val + BOffset]; /* look up the new bar position */
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201 | curbar = BarCcur[bar]; /* get the current bar position */
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202 | bardif = newbar - curbar; /* calculate how far to move the bar */
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203 |
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204 | if (0 EQ bardif) /* done if bar doesn't need to be moved */
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205 | return;
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206 |
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207 | GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
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208 |
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209 | barcol = BarCols[bar]; /* find leftmost column of bar */
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210 |
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211 | /* calculate initial GLC RAM write address */
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212 |
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213 | baradr = barcol + (85 * (63 - curbar)) + G_PLANE2;
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214 |
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215 | /* |
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216 |
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217 | */
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218 | if (newbar > curbar) { /* increasing value */
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219 |
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220 | LCD_WC = G_CRSMUP; /* set cursor motion "up" */
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221 |
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222 | for (i = 0; i < 3; i++) { /* for each bar column ... */
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223 |
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224 | bardot = BarDots[i]; /* get the column dot value */
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225 | barpos = curbar; /* set current vert. position */
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226 |
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227 | LCD_WC = G_CRSWR; /* set cursor address */
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228 | LCD_WD = baradr & 0xFF;
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229 | LCD_WD = (baradr >> 8) & 0xFF;
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230 |
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231 | LCD_WC = G_MWRITE; /* setup to write */
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232 |
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233 | while (barpos NE newbar) /* write bar on LCD */
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234 | if (barpos++ < BCenter)
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235 | LCD_WD = 0x00; /* dots off */
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236 | else
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237 | LCD_WD = bardot; /* dots on */
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238 |
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239 | ++baradr; /* update GLC start address */
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240 | }
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241 | /* |
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242 |
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243 | */
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244 | } else { /* decreasing value */
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245 |
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246 | LCD_WC = G_CRSMDN; /* set cursor motion "down" */
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247 |
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248 | for (i = 0; i < 3; i++) { /* for each bar column ... */
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249 |
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250 | bardot = BarDots[i]; /* get column dot value */
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251 | barpos = curbar; /* set current bar location */
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252 |
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253 | LCD_WC = G_CRSWR; /* set cursor address */
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254 | LCD_WD = baradr & 0xFF;
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255 | LCD_WD = (baradr >> 8) & 0xFF;
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256 |
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257 | LCD_WC = G_MWRITE; /* setup to write */
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258 |
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259 | while (barpos NE newbar) /* write bar to LCD */
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260 | if (barpos-- > BCenter)
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261 | LCD_WD= 0x00; /* dots off */
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262 | else
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263 | LCD_WD = bardot; /* dots on */
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264 |
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265 | ++baradr; /* update GLC start address */
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266 | }
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267 | }
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268 |
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269 | LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
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270 | GLCcurs(G_OFF); /* turn off the cursor */
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271 |
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272 | BarCcur[bar] = newbar; /* update current bar position */
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273 | }
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274 |
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275 | /* |
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276 |
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277 | */
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278 |
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279 | /*
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280 | =============================================================================
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281 | BarCset() -- set a centered-zero bar graph to an initial value
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282 | =============================================================================
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283 | */
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284 |
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285 | void BarCset(int16_t bar, int16_t val)
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286 | {
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287 | register int16_t bardot, barpos, barloc1, barloc2;
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288 | register uint16_t baradr;
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289 | int16_t barcol, i, newbar;
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290 |
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291 | GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
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292 |
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293 | newbar = BarCLn[val + BOffset]; /* look up the new bar position */
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294 | barcol = BarCols[bar]; /* find leftmost column of bar */
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295 |
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296 | /* calculate initial GLC RAM write address */
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297 |
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298 | baradr = barcol + (85 * (63 - BBase)) + G_PLANE2;
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299 |
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300 | if (newbar < BCenter) { /* target below center */
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301 |
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302 | barloc1 = newbar; /* off limit */
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303 | barloc2 = BCenter; /* on limit */
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304 |
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305 | } else { /* target at or above center */
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306 |
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307 | barloc1 = BCenter; /* off limit */
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308 | barloc2 = newbar; /* on limit */
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309 | }
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310 |
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311 | LCD_WC = G_CRSMUP; /* set cursor motion "up" */
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312 |
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313 | /* |
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314 |
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315 | */
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316 | for (i = 0; i < 3; i++) { /* for each bar column ... */
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317 |
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318 | bardot = BarDots[i]; /* get the column dot value */
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319 | barpos = BBase; /* set current vert. position */
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320 |
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321 | LCD_WC = G_CRSWR; /* set cursor address */
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322 | LCD_WD = baradr & 0xFF;
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323 | LCD_WD = (baradr >> 8) & 0xFF;
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324 |
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325 | LCD_WC = G_MWRITE; /* setup to write */
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326 |
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327 | while (barpos < barloc1) { /* write "off" dots */
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328 |
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329 | LCD_WD = 0x00;
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330 | barpos++;
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331 | }
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332 |
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333 | while (barpos LE barloc2) { /* write "on" dots */
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334 |
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335 | LCD_WD = bardot;
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336 | barpos++;
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337 | }
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338 |
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339 | while (barpos LE BTop) { /* write "off" dots */
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340 |
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341 | LCD_WD = 0x00;
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342 | barpos++;
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343 | }
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344 |
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345 | ++baradr; /* update GLC start address */
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346 | }
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347 |
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348 | LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
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349 | GLCcurs(G_OFF); /* turn off the cursor */
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350 |
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351 | BarCcur[bar] = newbar; /* update current bar position */
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352 | }
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353 |
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