Karl Fischer / NixieTube

Provides class structure for simple control of Nixie Tubes using custom PCB

NixieTube.cpp@0:34f3e0f37c55, 2016-12-05 (annotated)

Committer:
fischk08
Date:
Mon Dec 05 21:35:57 2016 +0000
Revision:
0:34f3e0f37c55
Child:
1:0470cc006ce7
V1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
fischk08 0:34f3e0f37c55 1 #include "NixieTube.h"
fischk08 0:34f3e0f37c55 2 /* Not Currently Implmented
fischk08 0:34f3e0f37c55 3 #define TUBE_1_LED 0x00800
fischk08 0:34f3e0f37c55 4 #define TUBE_2_LED 0x01000
fischk08 0:34f3e0f37c55 5 #define TUBE_3_LED 0x02000
fischk08 0:34f3e0f37c55 6 #define TUBE_4_LED 0x04000
fischk08 0:34f3e0f37c55 7 #define TUBE_5_LED 0x08000
fischk08 0:34f3e0f37c55 8 #define TUBE_6_LED 0x10000
fischk08 0:34f3e0f37c55 9 */
fischk08 0:34f3e0f37c55 10 #define TUBE_1_CATH 0x20000
fischk08 0:34f3e0f37c55 11 #define TUBE_2_CATH 0x40000
fischk08 0:34f3e0f37c55 12 #define TUBE_3_CATH 0x80000
fischk08 0:34f3e0f37c55 13 #define TUBE_4_CATH 0x100000
fischk08 0:34f3e0f37c55 14 #define TUBE_5_CATH 0x200000
fischk08 0:34f3e0f37c55 15 #define TUBE_6_CATH 0x400000
fischk08 0:34f3e0f37c55 16 #define START_THREAD 1
fischk08 0:34f3e0f37c55 17 Mutex nixie_mutex;
fischk08 0:34f3e0f37c55 18
fischk08 0:34f3e0f37c55 19 NixieTube::NixieTube(PinName sdi, PinName scl, PinName rcl, PinName cen): _thread(&NixieTube::threadStarter, this, osPriorityNormal,1024),_sdi(sdi), _scl(scl), _rcl(rcl), _cen(cen){
fischk08 0:34f3e0f37c55 20 digit1 = 1;
fischk08 0:34f3e0f37c55 21 digit2 = 2;
fischk08 0:34f3e0f37c55 22 digit3 = 3;
fischk08 0:34f3e0f37c55 23 digit4 = 4;
fischk08 0:34f3e0f37c55 24 delay1 = 0.0005;
fischk08 0:34f3e0f37c55 25 delay2 = 0.0045;
fischk08 0:34f3e0f37c55 26 brightness = 0;
fischk08 0:34f3e0f37c55 27 _cen.write(1.0);
fischk08 0:34f3e0f37c55 28 _cen.period_us(10000);
fischk08 0:34f3e0f37c55 29 _thread.signal_set(START_THREAD);
fischk08 0:34f3e0f37c55 30 }
fischk08 0:34f3e0f37c55 31
fischk08 0:34f3e0f37c55 32 void NixieTube::threadStarter(void const *p) {
fischk08 0:34f3e0f37c55 33 NixieTube *instance = (NixieTube*)p;
fischk08 0:34f3e0f37c55 34 instance->threadWorker();
fischk08 0:34f3e0f37c55 35 }
fischk08 0:34f3e0f37c55 36
fischk08 0:34f3e0f37c55 37 void NixieTube::threadWorker() {
fischk08 0:34f3e0f37c55 38 _thread.signal_wait(START_THREAD);
fischk08 0:34f3e0f37c55 39 while(1) {
fischk08 0:34f3e0f37c55 40 nixie_thread();
fischk08 0:34f3e0f37c55 41 }
fischk08 0:34f3e0f37c55 42 }
fischk08 0:34f3e0f37c55 43
fischk08 0:34f3e0f37c55 44 NixieTube::~NixieTube()
fischk08 0:34f3e0f37c55 45 {
fischk08 0:34f3e0f37c55 46 }
fischk08 0:34f3e0f37c55 47
fischk08 0:34f3e0f37c55 48 int NixieTube::nixie_id_convert(int digit) {
fischk08 0:34f3e0f37c55 49 if (digit == 0 || digit == -1) {
fischk08 0:34f3e0f37c55 50 return digit + 1;
fischk08 0:34f3e0f37c55 51 }
fischk08 0:34f3e0f37c55 52 if (digit < 10) {
fischk08 0:34f3e0f37c55 53 return 11 - digit;
fischk08 0:34f3e0f37c55 54 }
fischk08 0:34f3e0f37c55 55 if (digit == 10) {
fischk08 0:34f3e0f37c55 56 return 11;
fischk08 0:34f3e0f37c55 57 }
fischk08 0:34f3e0f37c55 58 return 0;
fischk08 0:34f3e0f37c55 59 }
fischk08 0:34f3e0f37c55 60
fischk08 0:34f3e0f37c55 61 void NixieTube::send_nixie_shiftreg(int cathode_id, int led_bitfield, int tube_bitfield) {
fischk08 0:34f3e0f37c55 62
fischk08 0:34f3e0f37c55 63 int buffer = 0;
fischk08 0:34f3e0f37c55 64 buffer = 1 << (cathode_id-1) | led_bitfield | tube_bitfield;
fischk08 0:34f3e0f37c55 65
fischk08 0:34f3e0f37c55 66 for (int i=23; i >= 0; i--) {
fischk08 0:34f3e0f37c55 67 _sdi = buffer & (1 << i);
fischk08 0:34f3e0f37c55 68 _scl = 1;
fischk08 0:34f3e0f37c55 69 _scl = 0; // Whats going on here?
fischk08 0:34f3e0f37c55 70 }
fischk08 0:34f3e0f37c55 71 _rcl = 1;
fischk08 0:34f3e0f37c55 72 _rcl = 0; // Whats going on here?
fischk08 0:34f3e0f37c55 73
fischk08 0:34f3e0f37c55 74 }
fischk08 0:34f3e0f37c55 75
fischk08 0:34f3e0f37c55 76 void NixieTube::nixie_thread() {
fischk08 0:34f3e0f37c55 77 while (1) {
fischk08 0:34f3e0f37c55 78 nixie_mutex.lock();
fischk08 0:34f3e0f37c55 79 send_nixie_shiftreg(nixie_id_convert(digit1), 0, TUBE_1_CATH);
fischk08 0:34f3e0f37c55 80 Thread::wait(1);
fischk08 0:34f3e0f37c55 81 send_nixie_shiftreg(0, 0, 0);
fischk08 0:34f3e0f37c55 82 Thread::wait(1);
fischk08 0:34f3e0f37c55 83 send_nixie_shiftreg(nixie_id_convert(digit2), 0, TUBE_2_CATH);
fischk08 0:34f3e0f37c55 84 Thread::wait(1);
fischk08 0:34f3e0f37c55 85 send_nixie_shiftreg(0, 0, 0);
fischk08 0:34f3e0f37c55 86 Thread::wait(1);
fischk08 0:34f3e0f37c55 87 send_nixie_shiftreg(nixie_id_convert(digit3), 0, TUBE_3_CATH);
fischk08 0:34f3e0f37c55 88 Thread::wait(1);
fischk08 0:34f3e0f37c55 89 send_nixie_shiftreg(0, 0, 0);
fischk08 0:34f3e0f37c55 90 Thread::wait(1);
fischk08 0:34f3e0f37c55 91 send_nixie_shiftreg(nixie_id_convert(digit4), 0, TUBE_4_CATH);
fischk08 0:34f3e0f37c55 92 Thread::wait(1);
fischk08 0:34f3e0f37c55 93 send_nixie_shiftreg(0, 0, 0);
fischk08 0:34f3e0f37c55 94 Thread::wait(1);
fischk08 0:34f3e0f37c55 95 nixie_mutex.unlock();
fischk08 0:34f3e0f37c55 96 }
fischk08 0:34f3e0f37c55 97 }
fischk08 0:34f3e0f37c55 98 void NixieTube::start_nixie(){
fischk08 0:34f3e0f37c55 99 //thread = new Thread(nixie_thread, this);
fischk08 0:34f3e0f37c55 100 }
fischk08 0:34f3e0f37c55 101 void NixieTube::update_nixie_tube(int ref,int val){
fischk08 0:34f3e0f37c55 102 switch(ref){
fischk08 0:34f3e0f37c55 103 case(1):
fischk08 0:34f3e0f37c55 104 digit1 = val;
fischk08 0:34f3e0f37c55 105 case(2):
fischk08 0:34f3e0f37c55 106 digit2 = val;
fischk08 0:34f3e0f37c55 107 case(3):
fischk08 0:34f3e0f37c55 108 digit3 = val;
fischk08 0:34f3e0f37c55 109 case(4):
fischk08 0:34f3e0f37c55 110 digit4 = val;
fischk08 0:34f3e0f37c55 111 }
fischk08 0:34f3e0f37c55 112 }
fischk08 0:34f3e0f37c55 113 void NixieTube::set_dim(float duty,int pulsewidth){
fischk08 0:34f3e0f37c55 114 _cen.write(duty);
fischk08 0:34f3e0f37c55 115 _cen.period_us(pulsewidth);
fischk08 0:34f3e0f37c55 116 }