charles young / Mbed 2 deprecated GEO_COUNTER_L432KC

Charles Young's development fork. Going forward I only want to push mature code to main repository.

Dependencies:   mbed

Fork of GEO_COUNTER_L432KC by Geo Electronics "Geo Counter"

LED7segDisplay.cpp@27:81c417f7cf1a, 2018-09-05 (annotated)

Committer:
Charles David Young
Date:
Wed Sep 05 11:24:15 2018 -0700
Revision:
27:81c417f7cf1a
Parent:
26:166dbe6022e8
Child:
29:3a2152a3a9d1
Remove decimal points

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Charles David Young 25:0161bf1adc81 1 /**
Charles David Young 25:0161bf1adc81 2 * @author Charles Young
Charles David Young 25:0161bf1adc81 3 *
Charles David Young 25:0161bf1adc81 4 */
Charles David Young 25:0161bf1adc81 5
Charles David Young 25:0161bf1adc81 6 #include "LED7segDisplay.hpp"
Charles David Young 25:0161bf1adc81 7
Charles David Young 25:0161bf1adc81 8 LED7segDisplay::LED7segDisplay()
Charles David Young 25:0161bf1adc81 9 {
charlesdavidyoung 26:166dbe6022e8 10 brightness = BRIGHTNESS_MAX;
Charles David Young 25:0161bf1adc81 11 Display_init();
Charles David Young 25:0161bf1adc81 12 }
Charles David Young 25:0161bf1adc81 13
Charles David Young 25:0161bf1adc81 14 //---------------------------------------------------------------------------
Charles David Young 25:0161bf1adc81 15 // Initialize the MAX7219
Charles David Young 25:0161bf1adc81 16
Charles David Young 25:0161bf1adc81 17 void LED7segDisplay::Display_init(void)
Charles David Young 25:0161bf1adc81 18 {
Charles David Young 25:0161bf1adc81 19 uint8_t i;
Charles David Young 25:0161bf1adc81 20 uint16_t data_to_send[6] = {SHUTDOWN, TURN_ON, DEC_MODE, brightness, SCAN_LIM, TEST};
Charles David Young 25:0161bf1adc81 21
Charles David Young 25:0161bf1adc81 22 for(i = 0; i < sizeof(data_to_send)/sizeof(uint16_t); i++)
Charles David Young 25:0161bf1adc81 23 {
Charles David Young 25:0161bf1adc81 24 sendDataToDisplay(data_to_send[i]);
Charles David Young 25:0161bf1adc81 25 }
Charles David Young 25:0161bf1adc81 26
Charles David Young 25:0161bf1adc81 27 return;
Charles David Young 25:0161bf1adc81 28 }
Charles David Young 25:0161bf1adc81 29
charlesdavidyoung 26:166dbe6022e8 30 void LED7segDisplay::Display_brightness_up()
Charles David Young 25:0161bf1adc81 31 {
Charles David Young 25:0161bf1adc81 32 if (brightness < BRIGHTNESS_MAX)
Charles David Young 25:0161bf1adc81 33 {
Charles David Young 25:0161bf1adc81 34 Display_brightness(++brightness);
Charles David Young 25:0161bf1adc81 35 }
Charles David Young 25:0161bf1adc81 36 }
Charles David Young 25:0161bf1adc81 37
charlesdavidyoung 26:166dbe6022e8 38 void LED7segDisplay::Display_brightness_down()
Charles David Young 25:0161bf1adc81 39 {
Charles David Young 25:0161bf1adc81 40 if (brightness > BRIGHTNESS_MIN)
Charles David Young 25:0161bf1adc81 41 {
Charles David Young 25:0161bf1adc81 42 Display_brightness(--brightness);
Charles David Young 25:0161bf1adc81 43 }
Charles David Young 25:0161bf1adc81 44 }
Charles David Young 25:0161bf1adc81 45
charlesdavidyoung 26:166dbe6022e8 46 void LED7segDisplay::Display_brightness(uint16_t brightness)
Charles David Young 25:0161bf1adc81 47 {
Charles David Young 25:0161bf1adc81 48 sendDataToDisplay(brightness);
Charles David Young 25:0161bf1adc81 49 }
Charles David Young 25:0161bf1adc81 50
Charles David Young 25:0161bf1adc81 51 //---------------------------------------------------------------------------
Charles David Young 25:0161bf1adc81 52 // Refresh the 6 digits of the main display
Charles David Young 25:0161bf1adc81 53
Charles David Young 25:0161bf1adc81 54 void LED7segDisplay::Display_6D_write(uint8_t value)
Charles David Young 25:0161bf1adc81 55 {
Charles David Young 25:0161bf1adc81 56
Charles David Young 25:0161bf1adc81 57 uint8_t digit;
Charles David Young 25:0161bf1adc81 58 uint16_t data_to_send;
Charles David Young 25:0161bf1adc81 59 char TextString[6];
Charles David Young 25:0161bf1adc81 60
Charles David Young 25:0161bf1adc81 61 // int to string, then string to digits
Charles David Young 25:0161bf1adc81 62
Charles David Young 25:0161bf1adc81 63 sprintf(TextString, "%6d", value); // int to string
Charles David Young 25:0161bf1adc81 64
Charles David Young 25:0161bf1adc81 65 for(uint8_t i=0; i<6; i++)
Charles David Young 25:0161bf1adc81 66 {
Charles David Young 25:0161bf1adc81 67 if(TextString[i] == ' ') // blank empty digits
Charles David Young 27:81c417f7cf1a 68 Disp_Digit[i] = 0x7F;
Charles David Young 25:0161bf1adc81 69 else
Charles David Young 25:0161bf1adc81 70 Disp_Digit[i] = TextString[i]-'0';
Charles David Young 25:0161bf1adc81 71 }
Charles David Young 25:0161bf1adc81 72
Charles David Young 25:0161bf1adc81 73 // write to chip
Charles David Young 25:0161bf1adc81 74
Charles David Young 25:0161bf1adc81 75 SCK = 0;
Charles David Young 25:0161bf1adc81 76 wait_us(DT);
Charles David Young 25:0161bf1adc81 77
Charles David Young 25:0161bf1adc81 78 for(digit = 1; digit <7; digit++)
Charles David Young 25:0161bf1adc81 79 {
Charles David Young 25:0161bf1adc81 80 // each stream consists of digit address and data to show
Charles David Young 25:0161bf1adc81 81 data_to_send = 7 - digit;
Charles David Young 25:0161bf1adc81 82 data_to_send<<=8;
Charles David Young 25:0161bf1adc81 83 data_to_send = data_to_send | Disp_Digit[digit-1];
Charles David Young 25:0161bf1adc81 84 sendDataToDisplay(data_to_send);
Charles David Young 25:0161bf1adc81 85 }
Charles David Young 25:0161bf1adc81 86
Charles David Young 25:0161bf1adc81 87 return;
Charles David Young 25:0161bf1adc81 88 }
Charles David Young 25:0161bf1adc81 89
Charles David Young 25:0161bf1adc81 90
Charles David Young 25:0161bf1adc81 91 //---------------------------------------------------------------------------
Charles David Young 25:0161bf1adc81 92 // Refresh the 2 digits of the gate display
Charles David Young 25:0161bf1adc81 93
Charles David Young 25:0161bf1adc81 94 void LED7segDisplay::Display_2D_write(unsigned short value)
Charles David Young 25:0161bf1adc81 95 {
Charles David Young 25:0161bf1adc81 96
Charles David Young 25:0161bf1adc81 97 uint8_t digit;
Charles David Young 25:0161bf1adc81 98 uint16_t data_to_send;
Charles David Young 25:0161bf1adc81 99 char TextString[2];
Charles David Young 25:0161bf1adc81 100
Charles David Young 25:0161bf1adc81 101 // int to string, then string to digits
Charles David Young 25:0161bf1adc81 102
Charles David Young 25:0161bf1adc81 103 sprintf(TextString, "%2d", value); // int to string
Charles David Young 25:0161bf1adc81 104
Charles David Young 25:0161bf1adc81 105 if(TextString[0] == ' ') // blank empty digits
Charles David Young 27:81c417f7cf1a 106 Disp_Digit[7] = 0x7F;
Charles David Young 25:0161bf1adc81 107 else
Charles David Young 25:0161bf1adc81 108 Disp_Digit[7] = TextString[0] - '0';
Charles David Young 25:0161bf1adc81 109
Charles David Young 25:0161bf1adc81 110 Disp_Digit[6] = TextString[1] - '0';
Charles David Young 25:0161bf1adc81 111
Charles David Young 25:0161bf1adc81 112 // write to chip
Charles David Young 25:0161bf1adc81 113
Charles David Young 25:0161bf1adc81 114 SCK = 0;
Charles David Young 25:0161bf1adc81 115 wait_us(DT);
Charles David Young 25:0161bf1adc81 116
Charles David Young 25:0161bf1adc81 117 for(digit = 7; digit <9; digit++)
Charles David Young 25:0161bf1adc81 118 {
Charles David Young 25:0161bf1adc81 119 // each stream consists of digit address and data to show
Charles David Young 25:0161bf1adc81 120 data_to_send = digit;
Charles David Young 25:0161bf1adc81 121 data_to_send<<=8;
Charles David Young 25:0161bf1adc81 122 data_to_send = data_to_send | Disp_Digit[digit-1];
Charles David Young 25:0161bf1adc81 123 sendDataToDisplay(data_to_send);
Charles David Young 25:0161bf1adc81 124 }
Charles David Young 25:0161bf1adc81 125
Charles David Young 25:0161bf1adc81 126 return;
Charles David Young 25:0161bf1adc81 127 }
Charles David Young 25:0161bf1adc81 128
Charles David Young 25:0161bf1adc81 129 void LED7segDisplay::sendDataToDisplay(uint16_t data_to_send)
Charles David Young 25:0161bf1adc81 130 {
Charles David Young 25:0161bf1adc81 131 CS1 = 0;
Charles David Young 25:0161bf1adc81 132 for(uint16_t mask = 0x8000; mask!= 0; mask>>= 1)
Charles David Young 25:0161bf1adc81 133 {
Charles David Young 25:0161bf1adc81 134 wait_us(DT);
Charles David Young 25:0161bf1adc81 135 SCK = 0;
Charles David Young 25:0161bf1adc81 136 if(mask & data_to_send)
Charles David Young 25:0161bf1adc81 137 MOSI = 1;
Charles David Young 25:0161bf1adc81 138 else
Charles David Young 25:0161bf1adc81 139 MOSI = 0;
Charles David Young 25:0161bf1adc81 140
Charles David Young 25:0161bf1adc81 141 wait_us(DT);
Charles David Young 25:0161bf1adc81 142 SCK = 1;
Charles David Young 25:0161bf1adc81 143 }
Charles David Young 25:0161bf1adc81 144
Charles David Young 25:0161bf1adc81 145 wait_us(DT);
Charles David Young 25:0161bf1adc81 146 SCK = 0;
Charles David Young 25:0161bf1adc81 147 wait_us(DT);
Charles David Young 25:0161bf1adc81 148 CS1 = 1;
Charles David Young 25:0161bf1adc81 149 }