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