Fredric Rice / Mbed 2 deprecated NextGen-Exerciser

Concept code which launches two threads, one of which implements a Modbus Tunnel protocol to talk with an ISEM, the other which launches a Modbus RTU protocol to talk to a CPUM (most of the Modbus code has been removed prior to publishing.) A canned AC and DC spectra is provided to display wave forms on start-up however the project normally polls for spectra from the ISEM and then plots is (that functionality has been removed prior to publishing.)

Dependencies:   LCD_DISCO_F429ZI mbed TS_DISCO_F429ZI mbed-os BSP_DISCO_F429ZI

/media/uploads/Damotclese/img_20190530_100915.jpg

Plot of the initial start-up canned AC and DC spectra.

NextGen-Exerciser-Main.cpp@2:346119b3db6c, 2019-05-31 (annotated)

Committer:
Damotclese
Date:
Fri May 31 22:43:55 2019 +0000
Revision:
2:346119b3db6c
Parent:
1:01394e5db95b 
Final concept code update, no further updates are expected;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Damotclese 0:387684ec9d92 1
Damotclese 0:387684ec9d92 2 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 3 // NextGen-Exerciser-Main.cpp
Damotclese 0:387684ec9d92 4 //
Damotclese 0:387684ec9d92 5 // Fredric L. Rice, May 2019
Damotclese 0:387684ec9d92 6 //
Damotclese 0:387684ec9d92 7 // o The LCD is cleared and configured
Damotclese 0:387684ec9d92 8 // o A canned AC and DC 2f water-in-ambient-air spectrum is plotted
Damotclese 0:387684ec9d92 9 // on the LCD after the spectrum is "normalized" by making each of
Damotclese 0:387684ec9d92 10 // the sample values positive and then compressed so that it fits
Damotclese 0:387684ec9d92 11 // in the display
Damotclese 0:387684ec9d92 12 // o A thread is created to perform Modbus against a CPUM device
Damotclese 0:387684ec9d92 13 // o A thread is created to perform Modbus Tunneling with foreign
Damotclese 0:387684ec9d92 14 // frames against an ISEM device
Damotclese 0:387684ec9d92 15 // o The main() thread wakes up once a second and performs whatever
Damotclese 0:387684ec9d92 16 // other functionality might be desired
Damotclese 0:387684ec9d92 17 //
Damotclese 0:387684ec9d92 18 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 19
Damotclese 0:387684ec9d92 20 #include "mbed.h" // The mbed operating system
Damotclese 0:387684ec9d92 21 #include "NextGen-Exerciser-Modbus.h" // For the CPUM Modbus thread
Damotclese 0:387684ec9d92 22 #include "NextGen-Exerciser-Tunnel.h" // For the Modbus Tunnel thread
Damotclese 0:387684ec9d92 23 #include "NextGen-Exerciser-Defines.h" // For defined constants and MACROs
Damotclese 0:387684ec9d92 24 #include "LCD_DISCO_F429ZI.h" // For controlling the LCD
Damotclese 0:387684ec9d92 25
Damotclese 0:387684ec9d92 26 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 27 // Defined constants that we will use here
Damotclese 0:387684ec9d92 28 //
Damotclese 0:387684ec9d92 29 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 30
Damotclese 0:387684ec9d92 31 #define LCD_WIDTH 240
Damotclese 0:387684ec9d92 32 #define LCD_HEIGHT 320
Damotclese 0:387684ec9d92 33
Damotclese 0:387684ec9d92 34 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 35 // Allocate local data storage
Damotclese 0:387684ec9d92 36 //
Damotclese 0:387684ec9d92 37 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 38
Damotclese 0:387684ec9d92 39 // Describe a canned 2f AC spectrum consisting of 512 floating point samples
Damotclese 0:387684ec9d92 40 // Note that the values after the decimal point are not really needed, they
Damotclese 0:387684ec9d92 41 // get discarded when the spectrum values are plotted as integer values.
Damotclese 0:387684ec9d92 42 // These values were extracted after Spectra Processor decimated a spectrum
Damotclese 0:387684ec9d92 43 // of 65536 samples. We "normalize" the values to make them all positive and
Damotclese 0:387684ec9d92 44 // later we take the 512 samples and further "decimate" by averaging every
Damotclese 0:387684ec9d92 45 // two samples, resuling in 256 final values. The 256 values get plotted on
Damotclese 0:387684ec9d92 46 // to the LCD along the "width" of the display which is 320 pixels, leaving
Damotclese 0:387684ec9d92 47 // 64 pixels to the right of the plot free to be used for other things.
Damotclese 0:387684ec9d92 48 static float f_decimatedACSpectrum[] =
Damotclese 0:387684ec9d92 49 {
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Damotclese 0:387684ec9d92 114 } ;
Damotclese 1:01394e5db95b 115
Damotclese 1:01394e5db95b 116 static float f_decimatedDCSpectrum[] =
Damotclese 1:01394e5db95b 117 {
Damotclese 1:01394e5db95b 118 164622.859, 156185.187, 130679.648, 94457.766, 60629.086, 35816.664, 20260.646, 12169.420,
Damotclese 1:01394e5db95b 119 9521.371, 9680.042, 10389.553, 14924.355, 29797.771, 54048.340, 79677.930, 100584.007,
Damotclese 1:01394e5db95b 120 114916.859, 123130.789, 126640.937, 127108.539, 125978.539, 124264.656, 122565.765, 121160.593,
Damotclese 1:01394e5db95b 121 120120.234, 119405.492, 118934.531, 118622.812, 118402.031, 118224.390, 118060.507, 117896.296,
Damotclese 1:01394e5db95b 122 117727.086, 117552.828, 117375.304, 117196.453, 117017.570, 116837.726, 116656.039, 116473.492,
Damotclese 1:01394e5db95b 123 116289.906, 116104.265, 115915.937, 115723.570, 115526.664, 115325.656, 115120.421, 114911.429,
Damotclese 1:01394e5db95b 124 114697.828, 114476.804, 114247.992, 114013.179, 113771.867, 113522.140, 113264.578, 113002.109,
Damotclese 1:01394e5db95b 125 112735.640, 112462.671, 112182.187, 111892.171, 111590.554, 111280.000, 110962.125, 110639.429,
Damotclese 1:01394e5db95b 126 110312.679, 109975.781, 109623.398, 109255.132, 108878.789, 108498.742, 108109.039, 107706.664,
Damotclese 1:01394e5db95b 127 107291.461, 106863.039, 106420.086, 105960.101, 105483.578, 104994.242, 104495.437, 103984.203,
Damotclese 1:01394e5db95b 128 103457.976, 102917.992, 102363.515, 101794.343, 101214.031, 100629.211, 100040.492, 99439.859,
Damotclese 1:01394e5db95b 129 98819.461, 98173.063, 97503.469, 96825.117, 96144.188, 95452.000, 94738.039, 93996.977,
Damotclese 1:01394e5db95b 130 93228.984, 92435.734, 91625.875, 90815.219, 90004.086, 89177.555, 88331.219, 87471.523,
Damotclese 1:01394e5db95b 131 86607.555, 85742.336, 84864.008, 83967.336, 83058.867, 82140.016, 81212.930, 80285.523,
Damotclese 1:01394e5db95b 132 79358.758, 78424.992, 77494.000, 76579.289, 75662.469, 74731.563, 73808.039, 72908.133,
Damotclese 1:01394e5db95b 133 72025.875, 71144.391, 70256.500, 69372.094, 68501.109, 67648.109, 66813.898, 65996.867,
Damotclese 1:01394e5db95b 134 65195.641, 64414.758, 63665.418, 62947.723, 62251.930, 61577.820, 60930.938, 60310.703,
Damotclese 1:01394e5db95b 135 59717.070, 59153.746, 58622.043, 58124.535, 57664.281, 57239.590, 56849.543, 56495.852,
Damotclese 1:01394e5db95b 136 56177.289, 55892.000, 55643.016, 55431.777, 55257.840, 55124.254, 55029.434, 54971.840,
Damotclese 1:01394e5db95b 137 54955.445, 54979.289, 55040.957, 55139.879, 55278.230, 55457.840, 55673.457, 55925.805,
Damotclese 1:01394e5db95b 138 56220.500, 56554.961, 56925.184, 57330.996, 57773.441, 58253.074, 58770.402, 59326.258,
Damotclese 1:01394e5db95b 139 59917.891, 60538.234, 61187.504, 61875.184, 62605.102, 63370.285, 64161.137, 64974.477,
Damotclese 1:01394e5db95b 140 65816.297, 66691.320, 67592.148, 68503.984, 69422.414, 70364.266, 71343.883, 72351.906,
Damotclese 1:01394e5db95b 141 73372.016, 74390.320, 75401.859, 76421.227, 77464.242, 78523.742, 79582.586, 80642.227,
Damotclese 1:01394e5db95b 142 81714.758, 82804.367, 83906.422, 85006.211, 86092.281, 87169.992, 88245.125, 89310.359,
Damotclese 1:01394e5db95b 143 90360.758, 91407.516, 92457.242, 93497.219, 94524.414, 95552.211, 96577.430, 97588.609,
Damotclese 1:01394e5db95b 144 98588.539, 99575.063, 100543.234, 101498.179, 102434.992, 103344.476, 104234.867, 105114.281,
Damotclese 1:01394e5db95b 145 105982.656, 106839.539, 107682.593, 108518.468, 109349.765, 110166.625, 110967.500, 111753.843,
Damotclese 1:01394e5db95b 146 112524.437, 113279.453, 114016.820, 114732.929, 115433.171, 116129.640, 116820.101, 117493.351,
Damotclese 1:01394e5db95b 147 118144.578, 118774.367, 119390.500, 119997.554, 120589.562, 121168.031, 121741.507, 122308.328,
Damotclese 1:01394e5db95b 148 122861.468, 123400.164, 123925.187, 124437.125, 124944.039, 125448.539, 125940.484, 126416.187,
Damotclese 1:01394e5db95b 149 126881.367, 127340.125, 127790.164, 128227.226, 128651.578, 129064.890, 129469.812, 129867.937,
Damotclese 1:01394e5db95b 150 130259.703, 130648.023, 131031.523, 131406.046, 131770.140, 132124.406, 132471.937, 132814.875,
Damotclese 1:01394e5db95b 151 133153.359, 133487.703, 133816.296, 134134.171, 134439.421, 134738.953, 135040.187, 135338.218,
Damotclese 1:01394e5db95b 152 135628.468, 135915.687, 136198.750, 136474.656, 136746.062, 137011.234, 137270.937, 137531.343,
Damotclese 1:01394e5db95b 153 137787.781, 138033.875, 138274.046, 138511.078, 138741.453, 138967.078, 139194.343, 139418.796,
Damotclese 1:01394e5db95b 154 139635.859, 139849.718, 140059.359, 140263.546, 140464.187, 140661.343, 140856.937, 141051.328,
Damotclese 1:01394e5db95b 155 141241.859, 141427.875, 141610.156, 141789.250, 141965.359, 142139.234, 142310.125, 142476.343,
Damotclese 1:01394e5db95b 156 142639.187, 142799.046, 142954.359, 143106.234, 143255.687, 143402.343, 143547.250, 143690.609,
Damotclese 1:01394e5db95b 157 143830.875, 143967.234, 144099.421, 144228.046, 144353.625, 144475.734, 144594.656, 144710.671,
Damotclese 1:01394e5db95b 158 144823.093, 144931.390, 145036.046, 145138.921, 145240.593, 145339.421, 145434.562, 145525.906,
Damotclese 1:01394e5db95b 159 145612.765, 145694.562, 145771.609, 145845.453, 145916.843, 145984.953, 146049.296, 146109.531,
Damotclese 1:01394e5db95b 160 146165.484, 146216.843, 146262.718, 146304.031, 146341.515, 146373.906, 146400.953, 146423.250,
Damotclese 1:01394e5db95b 161 146440.265, 146451.703, 146457.453, 146456.968, 146450.687, 146439.015, 146420.750, 146395.453,
Damotclese 1:01394e5db95b 162 146364.703, 146329.000, 146286.328, 146235.890, 146179.187, 146116.390, 146046.562, 145970.250,
Damotclese 1:01394e5db95b 163 145888.875, 145802.343, 145709.578, 145611.015, 145507.875, 145400.656, 145289.718, 145175.437,
Damotclese 1:01394e5db95b 164 145058.906, 144941.578, 144823.593, 144704.640, 144585.046, 144464.984, 144345.546, 144229.687,
Damotclese 1:01394e5db95b 165 144119.281, 144013.609, 143912.671, 143818.609, 143732.531, 143654.062, 143584.265, 143524.062,
Damotclese 1:01394e5db95b 166 143472.843, 143430.656, 143398.421, 143376.796, 143365.031, 143361.171, 143364.421, 143375.312,
Damotclese 1:01394e5db95b 167 143393.546, 143417.750, 143448.921, 143488.828, 143537.078, 143593.468, 143657.265, 143727.843,
Damotclese 1:01394e5db95b 168 143806.734, 143893.125, 143984.609, 144081.359, 144184.625, 144293.546, 144406.218, 144524.500,
Damotclese 1:01394e5db95b 169 144650.468, 144782.187, 144918.953, 145061.843, 145211.578, 145369.562, 145536.781, 145712.218,
Damotclese 1:01394e5db95b 170 145895.156, 146085.937, 146284.156, 146491.125, 146708.437, 146934.328, 147168.796, 147413.734,
Damotclese 1:01394e5db95b 171 147668.906, 147933.296, 148206.078, 148487.953, 148777.734, 149071.968, 149373.265, 149686.093,
Damotclese 1:01394e5db95b 172 150007.109, 150328.703, 150648.953, 150969.625, 151287.671, 151603.171, 151921.078, 152239.421,
Damotclese 1:01394e5db95b 173 152552.781, 152860.218, 153163.453, 153463.234, 153758.718, 154050.921, 154341.515, 154628.250,
Damotclese 1:01394e5db95b 174 154907.796, 155179.656, 155444.531, 155703.500, 155957.656, 156205.265, 156446.359, 156685.718,
Damotclese 1:01394e5db95b 175 156922.781, 157152.437, 157374.281, 157590.484, 157802.796, 158010.562, 158211.375, 158407.156,
Damotclese 1:01394e5db95b 176 158600.015, 158787.093, 158967.703, 159144.312, 159317.187, 159486.218, 159652.437, 159816.218,
Damotclese 1:01394e5db95b 177 159976.906, 160135.031, 160291.250, 160443.359, 160590.359, 160733.843, 160875.171, 161015.390,
Damotclese 1:01394e5db95b 178 161154.515, 161291.843, 161427.000, 161559.953, 161689.953, 161815.781, 161939.203, 162063.375,
Damotclese 1:01394e5db95b 179 162187.312, 162307.875, 162424.328, 162538.328, 162651.750, 162765.296, 162878.078, 162987.562,
Damotclese 1:01394e5db95b 180 163093.531, 163199.171, 163305.312, 163410.593, 163514.609, 163617.453, 163720.437, 163824.093,
Damotclese 1:01394e5db95b 181 163926.906, 164028.125, 164126.515, 164224.531, 164334.281, 164304.281, 163889.750, 164209.968
Damotclese 1:01394e5db95b 182 } ;
Damotclese 0:387684ec9d92 183
Damotclese 0:387684ec9d92 184 // We will be using the LCD so instantiate an object locally
Damotclese 0:387684ec9d92 185 static LCD_DISCO_F429ZI st_lcd;
Damotclese 0:387684ec9d92 186
Damotclese 0:387684ec9d92 187 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 188 // MainProcessDecimatedSpectrum()
Damotclese 0:387684ec9d92 189 //
Damotclese 0:387684ec9d92 190 // This function will:
Damotclese 0:387684ec9d92 191 // o Search through the AC spectra and the DC spectra looking for
Damotclese 0:387684ec9d92 192 // the smallest and the highest numeric values in both
Damotclese 0:387684ec9d92 193 // o Convert the smallest number in to an absolute value by removing
Damotclese 0:387684ec9d92 194 // the sign bit using the ANSI absolute function
Damotclese 0:387684ec9d92 195 // o Add that now-positive smallest number to every sample in the
Damotclese 0:387684ec9d92 196 // AC and DC spectrums so that each value in the spectrums are
Damotclese 0:387684ec9d92 197 // positive values
Damotclese 0:387684ec9d92 198 // o Add that smallest value to the known largest value so that it
Damotclese 0:387684ec9d92 199 // agrees with the rest of the spectrum again
Damotclese 0:387684ec9d92 200 // o Compute a ratio derived by dividing the ;argest known value
Damotclese 0:387684ec9d92 201 // by the "width" of the screen
Damotclese 0:387684ec9d92 202 // o Goes through all 512 samples and averages them two by two,
Damotclese 0:387684ec9d92 203 // compressing the spectrum in place (in the same array of values)
Damotclese 0:387684ec9d92 204 // so that we end up with 256 samples which can fit on the LCD
Damotclese 0:387684ec9d92 205 // o Divides each of the 256 samples by the radio so that each of
Damotclese 0:387684ec9d92 206 // the samples will fit on the LCD
Damotclese 0:387684ec9d92 207 //
Damotclese 0:387684ec9d92 208 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 209 static void MainProcessDecimatedSpectrum(void)
Damotclese 0:387684ec9d92 210 {
Damotclese 1:01394e5db95b 211 uint16_t u16_searchLoop = 0;
Damotclese 1:01394e5db95b 212 uint32_t u32_sampleACRatio = 0;
Damotclese 1:01394e5db95b 213 uint32_t u32_sampleDCRatio = 0;
Damotclese 1:01394e5db95b 214 uint16_t u16_resultIndex = 0;
Damotclese 1:01394e5db95b 215 float f_smallACNumber = 10000000.0f;
Damotclese 1:01394e5db95b 216 float f_largeACNumber = 0.0f;
Damotclese 1:01394e5db95b 217 float f_smallDCNumber = 10000000.0f;
Damotclese 1:01394e5db95b 218 float f_largeDCNumber = 0.0f;
Damotclese 0:387684ec9d92 219
Damotclese 0:387684ec9d92 220 // Search through the AC spectrum for the smallest and the largest values
Damotclese 0:387684ec9d92 221 for (u16_searchLoop = 0; u16_searchLoop < 512; u16_searchLoop++)
Damotclese 0:387684ec9d92 222 {
Damotclese 1:01394e5db95b 223 // First do the AC SPectrum
Damotclese 1:01394e5db95b 224 if (f_decimatedACSpectrum[u16_searchLoop] < f_smallACNumber)
Damotclese 0:387684ec9d92 225 {
Damotclese 0:387684ec9d92 226 // This value is the new lowest number
Damotclese 1:01394e5db95b 227 f_smallACNumber = f_decimatedACSpectrum[u16_searchLoop];
Damotclese 1:01394e5db95b 228 }
Damotclese 1:01394e5db95b 229
Damotclese 1:01394e5db95b 230 if (f_decimatedACSpectrum[u16_searchLoop] > f_largeACNumber)
Damotclese 1:01394e5db95b 231 {
Damotclese 1:01394e5db95b 232 // This value is the new highest number
Damotclese 1:01394e5db95b 233 f_largeACNumber = f_decimatedACSpectrum[u16_searchLoop];
Damotclese 0:387684ec9d92 234 }
Damotclese 0:387684ec9d92 235
Damotclese 1:01394e5db95b 236 // Now do the DC spectrum
Damotclese 1:01394e5db95b 237 if (f_decimatedDCSpectrum[u16_searchLoop] < f_smallDCNumber)
Damotclese 1:01394e5db95b 238 {
Damotclese 1:01394e5db95b 239 // This value is the new lowest number
Damotclese 1:01394e5db95b 240 f_smallDCNumber = f_decimatedDCSpectrum[u16_searchLoop];
Damotclese 1:01394e5db95b 241 }
Damotclese 1:01394e5db95b 242
Damotclese 1:01394e5db95b 243 if (f_decimatedDCSpectrum[u16_searchLoop] > f_largeDCNumber)
Damotclese 0:387684ec9d92 244 {
Damotclese 0:387684ec9d92 245 // This value is the new highest number
Damotclese 1:01394e5db95b 246 f_largeDCNumber = f_decimatedDCSpectrum[u16_searchLoop];
Damotclese 0:387684ec9d92 247 }
Damotclese 0:387684ec9d92 248 }
Damotclese 0:387684ec9d92 249
Damotclese 1:01394e5db95b 250 // Is the smallest AC number negative? We know that it is but we check
Damotclese 1:01394e5db95b 251 if (f_smallACNumber < 0.0f)
Damotclese 0:387684ec9d92 252 {
Damotclese 0:387684ec9d92 253 // Make the value absolute so that it is positive
Damotclese 1:01394e5db95b 254 f_smallACNumber = abs(f_smallACNumber);
Damotclese 0:387684ec9d92 255 }
Damotclese 0:387684ec9d92 256
Damotclese 1:01394e5db95b 257 // Is the smallest DC number negative?
Damotclese 1:01394e5db95b 258 if (f_smallDCNumber < 0.0f)
Damotclese 1:01394e5db95b 259 {
Damotclese 1:01394e5db95b 260 // Make the value absolute so that it is positive
Damotclese 1:01394e5db95b 261 f_smallDCNumber = abs(f_smallDCNumber);
Damotclese 1:01394e5db95b 262 }
Damotclese 1:01394e5db95b 263
Damotclese 0:387684ec9d92 264 // To make all values positive, add the newly-derived positive value.
Damotclese 0:387684ec9d92 265 // This makes all numbers positive and ensures that the smallest
Damotclese 0:387684ec9d92 266 // value in the spectra is zero.
Damotclese 0:387684ec9d92 267 for (u16_searchLoop = 0; u16_searchLoop < 512; u16_searchLoop++)
Damotclese 0:387684ec9d92 268 {
Damotclese 1:01394e5db95b 269 // Do the AC spectrum
Damotclese 1:01394e5db95b 270 f_decimatedACSpectrum[u16_searchLoop] += f_smallACNumber;
Damotclese 1:01394e5db95b 271
Damotclese 1:01394e5db95b 272 // Do the DC spectrum
Damotclese 1:01394e5db95b 273 f_decimatedDCSpectrum[u16_searchLoop] += f_smallDCNumber;
Damotclese 0:387684ec9d92 274 }
Damotclese 0:387684ec9d92 275
Damotclese 0:387684ec9d92 276 // Also add the newly-positive number to our largest known value
Damotclese 1:01394e5db95b 277 f_largeACNumber += f_smallACNumber;
Damotclese 1:01394e5db95b 278 f_largeDCNumber += f_smallDCNumber;
Damotclese 0:387684ec9d92 279
Damotclese 0:387684ec9d92 280 // Determine the ratio to use, the LCD screen is 240 by 320 so we
Damotclese 0:387684ec9d92 281 // take the highest number value in the spectra and divide by 240
Damotclese 0:387684ec9d92 282 // for the verticle plot, and we have 512 samples which will be
Damotclese 0:387684ec9d92 283 // plotted across the 320 by averaging every 2 samples to yield
Damotclese 0:387684ec9d92 284 // 256 horizontal positions. We plot with the screen laying on
Damotclese 0:387684ec9d92 285 // its side
Damotclese 1:01394e5db95b 286 u32_sampleACRatio = (f_largeACNumber / LCD_WIDTH);
Damotclese 1:01394e5db95b 287 u32_sampleDCRatio = (f_largeDCNumber / LCD_WIDTH);
Damotclese 0:387684ec9d92 288
Damotclese 0:387684ec9d92 289 // Go through each pairs of samples and average them and then
Damotclese 0:387684ec9d92 290 // divide the result by the ratio. Step through in twos
Damotclese 0:387684ec9d92 291 for (u16_searchLoop = 0; u16_searchLoop < 512; u16_searchLoop += 2, u16_resultIndex++)
Damotclese 0:387684ec9d92 292 {
Damotclese 1:01394e5db95b 293 // Take the next two AC samples and average them, putting the result
Damotclese 0:387684ec9d92 294 // in to the next result index of the same buffer we're processing
Damotclese 0:387684ec9d92 295 f_decimatedACSpectrum[u16_resultIndex] =
Damotclese 0:387684ec9d92 296 (f_decimatedACSpectrum[u16_searchLoop] + f_decimatedACSpectrum[u16_searchLoop]) / 2;
Damotclese 0:387684ec9d92 297
Damotclese 0:387684ec9d92 298 // Divide the sample value by the ratio
Damotclese 1:01394e5db95b 299 f_decimatedACSpectrum[u16_resultIndex] /= u32_sampleACRatio;
Damotclese 1:01394e5db95b 300
Damotclese 1:01394e5db95b 301 // Take the next two DC samples and average them, putting the result
Damotclese 1:01394e5db95b 302 // in to the next result index of the same buffer we're processing
Damotclese 1:01394e5db95b 303 f_decimatedDCSpectrum[u16_resultIndex] =
Damotclese 1:01394e5db95b 304 (f_decimatedDCSpectrum[u16_searchLoop] + f_decimatedDCSpectrum[u16_searchLoop]) / 2;
Damotclese 1:01394e5db95b 305
Damotclese 1:01394e5db95b 306 // Divide the sample value by the ratio
Damotclese 1:01394e5db95b 307 f_decimatedDCSpectrum[u16_resultIndex] /= u32_sampleDCRatio;
Damotclese 0:387684ec9d92 308 }
Damotclese 0:387684ec9d92 309 }
Damotclese 0:387684ec9d92 310
Damotclese 0:387684ec9d92 311 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 312 // MainPlotFinalSpectrum()
Damotclese 0:387684ec9d92 313 //
Damotclese 0:387684ec9d92 314 // This function will step through the "normalized" and compressed AC
Damotclese 0:387684ec9d92 315 // and DC spectrums consisting of 256 samples and will plot a line from
Damotclese 0:387684ec9d92 316 // one sample to the next on the LCD
Damotclese 0:387684ec9d92 317 //
Damotclese 0:387684ec9d92 318 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 319 static void MainPlotFinalSpectrum(void)
Damotclese 0:387684ec9d92 320 {
Damotclese 0:387684ec9d92 321 uint16_t u16_searchLoop = 0;
Damotclese 0:387684ec9d92 322
Damotclese 0:387684ec9d92 323 // Plot the spectrum values, plotting a line from point to point
Damotclese 0:387684ec9d92 324 for (u16_searchLoop = 0; u16_searchLoop < ((512 / 2) - 1); u16_searchLoop++)
Damotclese 0:387684ec9d92 325 {
Damotclese 1:01394e5db95b 326 // Ensure that we actually fit. The AC sample should
Damotclese 0:387684ec9d92 327 if (f_decimatedACSpectrum[u16_searchLoop] <= LCD_WIDTH)
Damotclese 0:387684ec9d92 328 {
Damotclese 0:387684ec9d92 329 st_lcd.DrawLine(f_decimatedACSpectrum[u16_searchLoop], u16_searchLoop,
Damotclese 0:387684ec9d92 330 f_decimatedACSpectrum[u16_searchLoop + 1], u16_searchLoop + 1);
Damotclese 0:387684ec9d92 331 }
Damotclese 0:387684ec9d92 332 else
Damotclese 0:387684ec9d92 333 {
Damotclese 0:387684ec9d92 334 // Mathematically we topped-out past the maximum some how
Damotclese 0:387684ec9d92 335 st_lcd.DrawPixel(0, u16_searchLoop, LCD_COLOR_WHITE);
Damotclese 0:387684ec9d92 336 }
Damotclese 1:01394e5db95b 337
Damotclese 1:01394e5db95b 338 // Ensure that we actually fit. The DC sample should
Damotclese 1:01394e5db95b 339 if (f_decimatedDCSpectrum[u16_searchLoop] <= LCD_WIDTH)
Damotclese 1:01394e5db95b 340 {
Damotclese 1:01394e5db95b 341 st_lcd.DrawLine(f_decimatedDCSpectrum[u16_searchLoop], u16_searchLoop,
Damotclese 1:01394e5db95b 342 f_decimatedDCSpectrum[u16_searchLoop + 1], u16_searchLoop + 1);
Damotclese 1:01394e5db95b 343 }
Damotclese 1:01394e5db95b 344 else
Damotclese 1:01394e5db95b 345 {
Damotclese 1:01394e5db95b 346 // Mathematically we topped-out past the maximum some how
Damotclese 1:01394e5db95b 347 st_lcd.DrawPixel(0, u16_searchLoop, LCD_COLOR_WHITE);
Damotclese 1:01394e5db95b 348 }
Damotclese 1:01394e5db95b 349 }
Damotclese 1:01394e5db95b 350 }
Damotclese 1:01394e5db95b 351
Damotclese 1:01394e5db95b 352 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 353 // MainInit()
Damotclese 0:387684ec9d92 354 //
Damotclese 0:387684ec9d92 355 // This function will:
Damotclese 0:387684ec9d92 356 // o Clear and initialize the LCD
Damotclese 0:387684ec9d92 357 // o Process the scanned decimated 2f AC and DC spectrums
Damotclese 0:387684ec9d92 358 // o Plot the processed spectrums
Damotclese 0:387684ec9d92 359 //
Damotclese 0:387684ec9d92 360 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 361 static void MainInit(void)
Damotclese 0:387684ec9d92 362 {
Damotclese 0:387684ec9d92 363 // Bring the LCD up and set its various colors
Damotclese 0:387684ec9d92 364 st_lcd.Clear(LCD_COLOR_BLACK);
Damotclese 0:387684ec9d92 365 st_lcd.SetBackColor(LCD_COLOR_BLACK);
Damotclese 0:387684ec9d92 366 st_lcd.SetTextColor(LCD_COLOR_WHITE);
Damotclese 0:387684ec9d92 367
Damotclese 0:387684ec9d92 368 // Process the decimated spectrum and then plot it
Damotclese 0:387684ec9d92 369 MainProcessDecimatedSpectrum();
Damotclese 0:387684ec9d92 370 MainPlotFinalSpectrum();
Damotclese 0:387684ec9d92 371 }
Damotclese 0:387684ec9d92 372
Damotclese 0:387684ec9d92 373 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 374 // MainThread()
Damotclese 0:387684ec9d92 375 //
Damotclese 0:387684ec9d92 376 // Called once a second.
Damotclese 0:387684ec9d92 377 //
Damotclese 0:387684ec9d92 378 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 379 static void MainThread(void)
Damotclese 0:387684ec9d92 380 {
Damotclese 0:387684ec9d92 381 }
Damotclese 0:387684ec9d92 382
Damotclese 0:387684ec9d92 383 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 384 // main()
Damotclese 0:387684ec9d92 385 //
Damotclese 0:387684ec9d92 386 // This is the main entry point which the operating system will load
Damotclese 0:387684ec9d92 387 // and execute on power-up after the OS completes its own start-up
Damotclese 0:387684ec9d92 388 // functionality.
Damotclese 0:387684ec9d92 389 //
Damotclese 0:387684ec9d92 390 // The function will:
Damotclese 0:387684ec9d92 391 // o Initialize this module's functionality
Damotclese 0:387684ec9d92 392 // o Launch the MODBUS CPUM thread
Damotclese 0:387684ec9d92 393 // o Launch the Modbus Tunnel thread
Damotclese 0:387684ec9d92 394 // o Enter in to a forever loop which should never terminate,
Damotclese 0:387684ec9d92 395 // waking up once a second to perform any additional desired
Damotclese 0:387684ec9d92 396 // functionality
Damotclese 0:387684ec9d92 397 //
Damotclese 0:387684ec9d92 398 // ----------------------------------------------------------------------
Damotclese 0:387684ec9d92 399 int main(void)
Damotclese 0:387684ec9d92 400 {
Damotclese 0:387684ec9d92 401 // Perform local module initialization, if any
Damotclese 0:387684ec9d92 402 MainInit();
Damotclese 0:387684ec9d92 403
Damotclese 0:387684ec9d92 404 // Initialize and launch the MODBUS CPUM thread
Damotclese 0:387684ec9d92 405 ModbusInit();
Damotclese 0:387684ec9d92 406
Damotclese 0:387684ec9d92 407 // Initialize and launch the MODBUS Tunnel thread
Damotclese 0:387684ec9d92 408 TunnelInit();
Damotclese 0:387684ec9d92 409
Damotclese 0:387684ec9d92 410 // Enter in to a forever loop which wakes up once a second
Damotclese 0:387684ec9d92 411 while (true)
Damotclese 0:387684ec9d92 412 {
Damotclese 0:387684ec9d92 413 // Sleep for one second
Damotclese 0:387684ec9d92 414 wait(1.0);
Damotclese 0:387684ec9d92 415
Damotclese 0:387684ec9d92 416 MainThread();
Damotclese 0:387684ec9d92 417 }
Damotclese 0:387684ec9d92 418 }
Damotclese 0:387684ec9d92 419
Damotclese 0:387684ec9d92 420 // End of file
Damotclese 0:387684ec9d92 421