Ayrton Leyssens / DMX

Written by Ayrton Leyssens DMX library, bitbang method for LPC1768

Dependents:   ArtnetDMX

DMX.cpp@0:55edcc97ba17, 2016-03-09 (annotated)

Committer:
Ayrton_L
Date:
Wed Mar 09 03:58:29 2016 +0000
Revision:
0:55edcc97ba17
Child:
1:4eb21fcb621a
DMX LIbrary LPC1768 BitBang Method

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Ayrton_L 0:55edcc97ba17 1 #include "DMX.h"
Ayrton_L 0:55edcc97ba17 2
Ayrton_L 0:55edcc97ba17 3 DMX::DMX(PinName pin) : _pin(pin)
Ayrton_L 0:55edcc97ba17 4 {
Ayrton_L 0:55edcc97ba17 5 this->I32_m_BreakTime = 88;
Ayrton_L 0:55edcc97ba17 6 this->I32_m_MABTime = 8;
Ayrton_L 0:55edcc97ba17 7 this->I32_m_StartCodeTime = 44;
Ayrton_L 0:55edcc97ba17 8 this->I32_m_BitTime = 4;
Ayrton_L 0:55edcc97ba17 9 this->I32_m_ChannelCounter = 0;
Ayrton_L 0:55edcc97ba17 10 this->I32_m_BitCounter = 0;
Ayrton_L 0:55edcc97ba17 11 uint32_t i;
Ayrton_L 0:55edcc97ba17 12 for(i = 0; i < 512; i++)
Ayrton_L 0:55edcc97ba17 13 {
Ayrton_L 0:55edcc97ba17 14 this->I8_m_Data[i] = 0;
Ayrton_L 0:55edcc97ba17 15 }
Ayrton_L 0:55edcc97ba17 16 this->_pin = 0;
Ayrton_L 0:55edcc97ba17 17 return;
Ayrton_L 0:55edcc97ba17 18 }
Ayrton_L 0:55edcc97ba17 19
Ayrton_L 0:55edcc97ba17 20 DMX::~DMX()
Ayrton_L 0:55edcc97ba17 21 {
Ayrton_L 0:55edcc97ba17 22 delete[] &I32_m_BreakTime;
Ayrton_L 0:55edcc97ba17 23 delete[] &I32_m_MABTime;
Ayrton_L 0:55edcc97ba17 24 delete[] &I32_m_StartCodeTime;
Ayrton_L 0:55edcc97ba17 25 delete[] &I32_m_BitTime;
Ayrton_L 0:55edcc97ba17 26 delete[] &_pin;
Ayrton_L 0:55edcc97ba17 27 delete[] &I8_m_Data;
Ayrton_L 0:55edcc97ba17 28 return;
Ayrton_L 0:55edcc97ba17 29 }
Ayrton_L 0:55edcc97ba17 30
Ayrton_L 0:55edcc97ba17 31 void DMX::V_SendDMX()
Ayrton_L 0:55edcc97ba17 32 {
Ayrton_L 0:55edcc97ba17 33 _pin = 0;
Ayrton_L 0:55edcc97ba17 34 t.attach_us(this, &DMX::V_SendMAB, 88);
Ayrton_L 0:55edcc97ba17 35 }
Ayrton_L 0:55edcc97ba17 36
Ayrton_L 0:55edcc97ba17 37 void DMX::V_SendMAB()
Ayrton_L 0:55edcc97ba17 38 {
Ayrton_L 0:55edcc97ba17 39 _pin = 1;
Ayrton_L 0:55edcc97ba17 40 t.detach();
Ayrton_L 0:55edcc97ba17 41 t.attach_us(this, &DMX::V_SendSC, 8);
Ayrton_L 0:55edcc97ba17 42 }
Ayrton_L 0:55edcc97ba17 43
Ayrton_L 0:55edcc97ba17 44 void DMX::V_SendSC()
Ayrton_L 0:55edcc97ba17 45 {
Ayrton_L 0:55edcc97ba17 46 _pin = 0;
Ayrton_L 0:55edcc97ba17 47 t.detach();
Ayrton_L 0:55edcc97ba17 48 t.attach_us(this, &DMX::V_SendData, 44);
Ayrton_L 0:55edcc97ba17 49 }
Ayrton_L 0:55edcc97ba17 50
Ayrton_L 0:55edcc97ba17 51 void DMX::V_SendData()
Ayrton_L 0:55edcc97ba17 52 {
Ayrton_L 0:55edcc97ba17 53 if(I32_m_BitCounter == 0)
Ayrton_L 0:55edcc97ba17 54 {
Ayrton_L 0:55edcc97ba17 55 _pin = 0;
Ayrton_L 0:55edcc97ba17 56 I32_m_BitCounter++;
Ayrton_L 0:55edcc97ba17 57 t.detach();
Ayrton_L 0:55edcc97ba17 58 t.attach_us(this, &DMX::V_SendData, 4);
Ayrton_L 0:55edcc97ba17 59 }
Ayrton_L 0:55edcc97ba17 60 else if(I32_m_BitCounter == 9 )
Ayrton_L 0:55edcc97ba17 61 {
Ayrton_L 0:55edcc97ba17 62 _pin = 1;
Ayrton_L 0:55edcc97ba17 63 I32_m_BitCounter = 0;
Ayrton_L 0:55edcc97ba17 64 I32_m_ChannelCounter++;
Ayrton_L 0:55edcc97ba17 65 t.detach();
Ayrton_L 0:55edcc97ba17 66 t.attach_us(this, &DMX::V_SendData, 8);
Ayrton_L 0:55edcc97ba17 67 }
Ayrton_L 0:55edcc97ba17 68 else
Ayrton_L 0:55edcc97ba17 69 {
Ayrton_L 0:55edcc97ba17 70 if(I32_m_ChannelCounter < 511)
Ayrton_L 0:55edcc97ba17 71 {
Ayrton_L 0:55edcc97ba17 72 if(I8_m_Data[I32_m_ChannelCounter] & 0x01 == 0x01)
Ayrton_L 0:55edcc97ba17 73 {
Ayrton_L 0:55edcc97ba17 74 _pin = 1;
Ayrton_L 0:55edcc97ba17 75 }
Ayrton_L 0:55edcc97ba17 76 else if(I8_m_Data[I32_m_ChannelCounter] & 0x01 == 0x00)
Ayrton_L 0:55edcc97ba17 77 {
Ayrton_L 0:55edcc97ba17 78 _pin =0;
Ayrton_L 0:55edcc97ba17 79 }
Ayrton_L 0:55edcc97ba17 80 I8_m_Data[I32_m_ChannelCounter] = I8_m_Data[I32_m_ChannelCounter] >> 1;
Ayrton_L 0:55edcc97ba17 81 }
Ayrton_L 0:55edcc97ba17 82 else
Ayrton_L 0:55edcc97ba17 83 {
Ayrton_L 0:55edcc97ba17 84 I32_m_ChannelCounter = 0;
Ayrton_L 0:55edcc97ba17 85 I32_m_BitCounter = 0;
Ayrton_L 0:55edcc97ba17 86 DMX::V_SendDMX();
Ayrton_L 0:55edcc97ba17 87 }
Ayrton_L 0:55edcc97ba17 88 I32_m_BitCounter++;
Ayrton_L 0:55edcc97ba17 89 t.detach();
Ayrton_L 0:55edcc97ba17 90 t.attach_us(this, &DMX::V_SendData, 4);
Ayrton_L 0:55edcc97ba17 91 }
Ayrton_L 0:55edcc97ba17 92 }
Ayrton_L 0:55edcc97ba17 93
Ayrton_L 0:55edcc97ba17 94 void DMX::V_SetBreak(uint32_t I32_BreakTime)
Ayrton_L 0:55edcc97ba17 95 {
Ayrton_L 0:55edcc97ba17 96 I32_m_BreakTime = I32_BreakTime;
Ayrton_L 0:55edcc97ba17 97 }
Ayrton_L 0:55edcc97ba17 98
Ayrton_L 0:55edcc97ba17 99 void DMX::V_SetMAB(uint32_t I32_MABTime)
Ayrton_L 0:55edcc97ba17 100 {
Ayrton_L 0:55edcc97ba17 101 I32_m_MABTime = I32_MABTime;
Ayrton_L 0:55edcc97ba17 102 }
Ayrton_L 0:55edcc97ba17 103
Ayrton_L 0:55edcc97ba17 104 void DMX::V_SetSC(uint32_t I32_StartCodeTime)
Ayrton_L 0:55edcc97ba17 105 {
Ayrton_L 0:55edcc97ba17 106 I32_m_StartCodeTime = I32_StartCodeTime;
Ayrton_L 0:55edcc97ba17 107 }
Ayrton_L 0:55edcc97ba17 108
Ayrton_L 0:55edcc97ba17 109 void DMX::V_SetBitTime(uint32_t I32_BitTime)
Ayrton_L 0:55edcc97ba17 110 {
Ayrton_L 0:55edcc97ba17 111 I32_m_BitTime = I32_BitTime;
Ayrton_L 0:55edcc97ba17 112 }
Ayrton_L 0:55edcc97ba17 113
Ayrton_L 0:55edcc97ba17 114 void DMX::V_SetData(uint8_t I8_Data[512])
Ayrton_L 0:55edcc97ba17 115 {
Ayrton_L 0:55edcc97ba17 116 uint32_t i;
Ayrton_L 0:55edcc97ba17 117 for(i = 0; i < 512; i++)
Ayrton_L 0:55edcc97ba17 118 {
Ayrton_L 0:55edcc97ba17 119 I8_m_Data[i] = I8_Data[i];
Ayrton_L 0:55edcc97ba17 120 }
Ayrton_L 0:55edcc97ba17 121 }