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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | mjames | 1 | /* |
| 2 | * dials.c |
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| 3 | * |
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| 4 | * Created on: 22 Jan 2016 |
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| 5 | * Author: Mike |
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| 6 | */ |
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| 7 | #include "stm32f1xx_hal.h" |
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| 8 | #include "ap_math.h" |
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| 9 | #include "font.h" |
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| 10 | #include "SSD1306.h" |
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| 11 | |||
| 12 | static uint16_t a1 = 120; |
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| 13 | static uint8_t xo=64; |
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| 14 | static uint8_t yo=64; |
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| 15 | static uint8_t siz=32; |
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| 16 | |||
| 17 | |||
| 18 | |||
| 19 | /* percent is integer from 0 to 100 */ |
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| 20 | void dial_draw_needle(uint16_t percent) |
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| 21 | { |
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| 22 | int ang = ((percent - 50)* a1) / 50 ; |
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| 23 | |||
| 24 | int si = ap_sin(ang); |
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| 25 | int co = ap_cos(ang); |
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| 26 | |||
| 27 | /* calculate a shift for a second side of the needle */ |
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| 28 | int xs = ap_sin(ang-90); |
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| 29 | int ys = ap_cos(ang-90); |
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| 30 | |||
| 31 | int si2 = siz+2; |
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| 5 | mjames | 32 | int si3 = siz/2; |
| 33 | |||
| 34 | |||
| 2 | mjames | 35 | drawLine(AP_SCALE(si*si2-xs)+xo,yo-AP_SCALE(co*si2-ys), |
| 5 | mjames | 36 | |
| 37 | AP_SCALE(si*si3-xs)+xo,yo-AP_SCALE(co*si3-ys), INVERT); |
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| 2 | mjames | 38 | drawLine(AP_SCALE(si*si2+xs)+xo,yo-AP_SCALE(co*si2+ys), |
| 39 | |||
| 5 | mjames | 40 | AP_SCALE(si*si3+xs)+xo,yo-AP_SCALE(co*si3+ys), INVERT); |
| 41 | |||
| 2 | mjames | 42 | } |
| 43 | |||
| 44 | |||
| 45 | |||
| 46 | /* initialise */ |
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| 47 | void dial_size(uint8_t size) |
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| 48 | { |
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| 49 | siz=size; |
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| 50 | } |
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| 51 | |||
| 52 | void dial_draw_scale(uint8_t low, uint8_t high,uint8_t width, uint8_t num_step) |
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| 53 | { |
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| 54 | int sz; |
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| 55 | int ang; |
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| 56 | int step = a1*2 / (4 * (high-low)); |
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| 57 | int t; |
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| 58 | ang = -a1; |
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| 59 | for(t=low*4; t <= high* 4 ; t++) |
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| 60 | { |
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| 61 | int si = ap_sin(ang); |
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| 62 | int co = ap_cos(ang); |
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| 63 | |||
| 64 | int len; |
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| 65 | switch(t % 4) |
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| 66 | { |
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| 67 | case 0: |
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| 68 | { |
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| 69 | uint8_t v = t/4; |
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| 70 | // if((v % num_step) == 0) |
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| 71 | // { |
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| 72 | // char buff[2]; |
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| 73 | // char * p = buff+1; |
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| 74 | // int d = 1; |
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| 75 | // buff[1] = v %10 + '0'; |
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| 76 | // if(v>=10) |
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| 77 | // { |
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| 78 | // p = buff; |
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| 79 | // d= 2; |
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| 80 | // buff[0] = v/10 + '0'; |
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| 81 | // } |
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| 82 | // |
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| 83 | // print_large_string(p,AP_SCALE((siz-width/2-3)*si)+xo - d *4, |
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| 84 | // yo - AP_SCALE((siz - width / 2 ) * co), d); |
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| 85 | // |
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| 86 | // } |
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| 87 | len=2; |
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| 88 | } |
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| 89 | break; |
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| 90 | case 1: |
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| 91 | case 3: |
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| 92 | len = width/4; |
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| 93 | break; |
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| 94 | case 2: |
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| 95 | len = width/2; |
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| 96 | break; |
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| 97 | } |
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| 98 | |||
| 99 | |||
| 100 | drawLine(AP_SCALE((siz)*si) + xo, yo - AP_SCALE((siz)*co), |
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| 101 | AP_SCALE((siz-len)*si) +xo, yo - AP_SCALE((siz-len)*co), 1); |
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| 102 | ang += step; |
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| 103 | } |
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| 104 | |||
| 105 | |||
| 106 | } |
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| 107 | |||
| 108 | |||
| 109 | |||
| 110 | void dial_origin(uint8_t x, uint8_t y) |
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| 111 | { |
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| 112 | xo=x; yo=y; |
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| 113 | } |