Forum: Digitale Signalverarbeitung / DSP / Machine Learning RS 485 mit LTC2850


RS 485 mit LTC2850
von Student (Gast)

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#hallo, da bin ich wieder. Mir wurde hier ja schon mit den Interrupts 
geholfen, dafur bin ich auch dankbar. Jetzt habe ich aber ein anderes 
Problemchen. Ich soll die RS485 Schnittstelle zum laufen bringen.

Es sieht folgendermaßen aus. ich benutze immer noch den TMS320F2806. Die 
Übertragung funktioniert soweit mit der USB Schnittstelle. Jetzt muss 
ich das ganze über RS485 zum Laufen bringen um mehrere Geräte ansprechen 
zu können.

Der komplette Code is von der TI Homepage. Für die USB Kommunikation 
wurde folgendes implementiert,

1
//  GPIO-28 - PIN FUNCTION = SCI-RX

2
  GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 1;  // 0=GPIO,  1=SCIRX-A,  2=Resv,  3=TZ5

3
//  GpioCtrlRegs.GPADIR.bit.GPIO28 = 1;    // 1=OUTput,  0=INput 

4
//  GpioDataRegs.GPACLEAR.bit.GPIO28 = 1;  // uncomment if --> Set Low initially

5
//  GpioDataRegs.GPASET.bit.GPIO28 = 1;    // uncomment if --> Set High initially

6
//--------------------------------------------------------------------------------------

7
//  GPIO-29 - PIN FUNCTION = SCI-TX

8
  GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 1;  // 0=GPIO,  1=SCITXD-A,  2=Resv,  3=TZ6

9
//  GpioCtrlRegs.GPADIR.bit.GPIO29 = 0;    // 1=OUTput,  0=INput 

10
//  GpioDataRegs.GPACLEAR.bit.GPIO29 = 1;  // uncomment if --> Set Low initially

11
//  GpioDataRegs.GPASET.bit.GPIO29 = 1;    // uncomment if --> Set High initially


GPIO 28 ist für das Empfangen zuständig, GPIO 29 für das Senden. Klappt 
alles wurderbar.

Jetzt benutze ich den LTC2850CDD_PBF 
http://pdf1.alldatasheet.com/datasheet-pdf/view/266321/LINER/LTC2850CDD.html 
um die Datem vom PC zu meinem Gerät seriell zu senden.

Hardware ist folgendermaßen konfiguriert für RS485,

GPIO 11 --> RX485
GPIO 09 --> TX485
GPIO 21 --> DE485 (1 --> Senden, 0 --> Empfangsmodus, da half-duplex)

ich wollte erstmal einfach pausenlos Daten senden um zu sehen ob 
überhaupt was am HTerm ankommt, also setze USB auf null,

1
//  GPIO-28 - PIN FUNCTION = SCI-RX

2
  GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 0;  // 0=GPIO,  1=SCIRX-A,  2=Resv,  3=TZ5

3
//  GpioCtrlRegs.GPADIR.bit.GPIO28 = 1;    // 1=OUTput,  0=INput 

4
//  GpioDataRegs.GPACLEAR.bit.GPIO28 = 1;  // uncomment if --> Set Low initially

5
//  GpioDataRegs.GPASET.bit.GPIO28 = 1;    // uncomment if --> Set High initially

6
//--------------------------------------------------------------------------------------

7
//  GPIO-29 - PIN FUNCTION = SCI-TX

8
  GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 0;  // 0=GPIO,  1=SCITXD-A,  2=Resv,  3=TZ6

9
//  GpioCtrlRegs.GPADIR.bit.GPIO29 = 0;    // 1=OUTput,  0=INput 

10
//  GpioDataRegs.GPACLEAR.bit.GPIO29 = 1;  // uncomment if --> Set Low initially

11
//  GpioDataRegs.GPASET.bit.GPIO29 = 1;    // uncomment if --> Set High initially


aktiviere RS 485 GPIOs,

1
//  GPIO-09 - PIN FUNCTION = --Spare--

2
  GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 2;    // 0=GPIO,  1=EPWM5B,  2=SCITX-B,  3=ECAP3

3
  GpioCtrlRegs.GPADIR.bit.GPIO9 = 1;    // 1=OUTput,  0=INput 

4
//  GpioDataRegs.GPACLEAR.bit.GPIO9 = 1;  // uncomment if --> Set Low initially

5
//  GpioDataRegs.GPASET.bit.GPIO9 = 1;    // uncomment if --> Set High initially

6
7
//  GPIO-11 - PIN FUNCTION = --Spare--

8
  GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 2;  // 0=GPIO,  1=EPWM6B,  2=SCIRX-B,  3=ECAP4

9
//  GpioCtrlRegs.GPADIR.bit.GPIO11 = 0;    // 1=OUTput,  0=INput 

10
//  GpioDataRegs.GPACLEAR.bit.GPIO11 = 1;  // uncomment if --> Set Low initially

11
//  GpioDataRegs.GPASET.bit.GPIO11 = 1;    // uncomment if --> Set High initially

12
13
//  GPIO-21 - PIN FUNCTION = --Spare--

14
  GpioCtrlRegs.GPAMUX2.bit.GPIO21 = 1;  // 0=GPIO,  1=EQEPB-1,  2=SPISOMI-C,  3=CANRX-B

15
//  GpioCtrlRegs.GPADIR.bit.GPIO21 = 0;    // 1=OUTput,  0=INput 

16
//  GpioDataRegs.GPACLEAR.bit.GPIO21 = 1;  // uncomment if --> Set Low initially

17
//  GpioDataRegs.GPASET.bit.GPIO21 = 1;    // uncomment if --> Set High initially


kann aber immer noch nix am PC empfange. Habe unterschiedliche 
konfigurationen des GPIO 21 ausprobiert, blieb alles erfolgslos.

Muss ich bei der Implementierung was besonderes beachten ?

Wäre für jede Hilfe dankbar.

Gruß

  


  




  

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    Re: RS 485 mit LTC2850
  


  

    

      von
      
        Peter D.
        (pdiener)
        
      
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>Muss ich bei der Implementierung was besonderes beachten ?

Ja, EALLOW und EDIS. Viele GPIO Register sind damit gesichert.
Ohne das korrekt zu verwenden, passiert die gewünschte 
GPIO-Konfiguration einfach nicht. Sie wird einfach still ignoriert.

Grüße,

Peter

  


  




  

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    Re: RS 485 mit LTC2850
  


  

    

      von
      
        Student (Gast)
      
      


      
    


    

      
    

    

    

  
  


  

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Hi Peter, EALLOW und EDIS sind drin im code, hier der Ausschnitt der 
Funktion.

1
//--------------------------------------------------------------------

2
//  Configure Device for target Application Here

3
//--------------------------------------------------------------------

4
void DeviceInit(void)

5
{

6
  WDogDisable();   // Disable the watchdog initially

7
  DINT;      // Global Disable all Interrupts

8
  IER = 0x0000;  // Disable CPU interrupts

9
  IFR = 0x0000;  // Clear all CPU interrupt flags

10
11
// SYSTEM CLOCK speed based on Crystal = 20 MHz

12
// 0xA =  100  MHz    (10)

13
// 0x9 =  90  MHz    (9)

14
// 0x8 =  80  MHz    (8)

15
// 0x7 =  70  MHz    (7)

16
// 0x6 =  60  MHz    (6)

17
// 0x5 =  50  MHz    (5)

18
// 0x4 =  40  MHz    (4)

19
// 0x3 =  30  MHz    (3)

20
// 0x2 =  20  MHz    (2)

21
22
  PLLset(0xA);  // choose from options above

23
24
// Initialise interrupt controller and Vector Table

25
// to defaults for now. Application ISR mapping done later.

26
  PieCntlInit();    

27
  PieVectTableInit();

28
29
30
   EALLOW; // below registers are "protected", allow access.

31
32
// HIGH / LOW SPEED CLOCKS prescale register settings

33
   SysCtrlRegs.HISPCP.all = 0x0002;    // Sysclk / 4 (25 MHz)

34
   SysCtrlRegs.LOSPCP.all = 0x0002;    // Sysclk / 4 (25 MHz)

35
   SysCtrlRegs.XCLK.bit.XCLKOUTDIV=2;

36
        

37
// PERIPHERAL CLOCK ENABLES 

38
//---------------------------------------------------

39
// If you are not using a peripheral you may want to switch

40
// the clock off to save power, i.e. set to =0 

41
// 

42
// Note: not all peripherals are available on all 280x derivates.

43
// Refer to the datasheet for your particular device. 

44
45
   SysCtrlRegs.PCLKCR0.bit.ADCENCLK = 1;    // ADC

46
   //------------------------------------------------

47
   SysCtrlRegs.PCLKCR0.bit.I2CAENCLK = 0;   // I2C

48
   //------------------------------------------------

49
   SysCtrlRegs.PCLKCR0.bit.SPIAENCLK=0;     // SPI-A

50
   SysCtrlRegs.PCLKCR0.bit.SPIBENCLK=0;     // SPI-B

51
   SysCtrlRegs.PCLKCR0.bit.SPICENCLK=0;     // SPI-C

52
   SysCtrlRegs.PCLKCR0.bit.SPIDENCLK=0;     // SPI-D

53
   //------------------------------------------------

54
   SysCtrlRegs.PCLKCR0.bit.SCIAENCLK=0;     // SCI-A  //mychanges was =1

55
   SysCtrlRegs.PCLKCR0.bit.SCIBENCLK=1;     // SCI-B  //       was =0

56
   //------------------------------------------------

57
   SysCtrlRegs.PCLKCR0.bit.ECANAENCLK=0;    // eCAN-A

58
   SysCtrlRegs.PCLKCR0.bit.ECANBENCLK=0;    // eCAN-B

59
   //------------------------------------------------

60
   SysCtrlRegs.PCLKCR1.bit.ECAP1ENCLK = 0;  // eCAP1

61
   SysCtrlRegs.PCLKCR1.bit.ECAP2ENCLK = 0;  // eCAP2

62
   SysCtrlRegs.PCLKCR1.bit.ECAP3ENCLK = 0;  // eCAP3

63
   SysCtrlRegs.PCLKCR1.bit.ECAP4ENCLK = 0;  // eCAP4

64
   //------------------------------------------------

65
   SysCtrlRegs.PCLKCR1.bit.EPWM1ENCLK = 0;   // ePWM1

66
   SysCtrlRegs.PCLKCR1.bit.EPWM2ENCLK = 0;   // ePWM2

67
   SysCtrlRegs.PCLKCR1.bit.EPWM3ENCLK = 0;   // ePWM3

68
   SysCtrlRegs.PCLKCR1.bit.EPWM4ENCLK = 0;   // ePWM4

69
   SysCtrlRegs.PCLKCR1.bit.EPWM5ENCLK = 0;   // ePWM5

70
   SysCtrlRegs.PCLKCR1.bit.EPWM6ENCLK = 0;   // ePWM6

71
   //------------------------------------------------

72
   SysCtrlRegs.PCLKCR1.bit.EQEP1ENCLK = 0;   // eQEP1

73
   SysCtrlRegs.PCLKCR1.bit.EQEP2ENCLK = 0;   // eQEP2

74
   //------------------------------------------------

75
   SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;   // Enable TBCLK

76
   //------------------------------------------------

77
                                     

78
79
// GPIO (GENERAL PURPOSE I/O) CONFIG

80
//--------------------------------------------------------------------------------------

81
//--------------------------------------------------------------------------------------

82
// QUICK NOTES on USAGE:

83
//-----------------------

84
// If GpioCtrlRegs.GP?MUX?bit.GPIO?= 1, 2 or 3 (i.e. Non GPIO func), then leave

85
//  rest of lines commented

86
// If GpioCtrlRegs.GP?MUX?bit.GPIO?= 0 (i.e. GPIO func), then:

87
//  1) uncomment GpioCtrlRegs.GP?DIR.bit.GPIO? = ? and choose pin to be IN or OUT

88
//  2) If IN, can leave next to lines commented

89
//  3) If OUT, uncomment line with ..GPACLEAR.. to force pin LOW or

90
//         uncomment line with ..GPASET.. to force pin HIGH or

91
//--------------------------------------------------------------------------------------

92
//--------------------------------------------------------------------------------------

93
//  GPIO-00 - PIN FUNCTION = LTA3

94
  GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 0;    // 0=GPIO,  1=EPWM1A,  2=Resv,  3=Resv

95
  GpioCtrlRegs.GPADIR.bit.GPIO0 = 1;    // 1=OUTput,  0=INput 

96
//  GpioDataRegs.GPACLEAR.bit.GPIO0 = 1;  // uncomment if --> Set Low initially

97
//  GpioDataRegs.GPASET.bit.GPIO0 = 1;    // uncomment if --> Set High initially

98
//--------------------------------------------------------------------------------------

99
//  GPIO-01 - PIN FUNCTION = SPIOD

100
  GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 0;    // 0=GPIO,  1=EPWM1B,  2=SPISIMO-D,  3=Resv

101
  GpioCtrlRegs.GPADIR.bit.GPIO1 = 1;    // 1=OUTput,  0=INput 

102
//  GpioDataRegs.GPACLEAR.bit.GPIO1 = 1;  // uncomment if --> Set Low initially

103
//  GpioDataRegs.GPASET.bit.GPIO1 = 1;    // uncomment if --> Set High initially

104
//--------------------------------------------------------------------------------------

105
//  GPIO-02 - PIN FUNCTION = LTA2

106
  GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 0;    // 0=GPIO,  1=EPWM2A,  2=Resv,  3=Resv

107
  GpioCtrlRegs.GPADIR.bit.GPIO2 = 1;    // 1=OUTput,  0=INput 

108
//  GpioDataRegs.GPACLEAR.bit.GPIO2 = 1;  // uncomment if --> Set Low initially

109
//  GpioDataRegs.GPASET.bit.GPIO2 = 1;    // uncomment if --> Set High initially

110
//--------------------------------------------------------------------------------------

111
//  GPIO-03 - PIN FUNCTION = --Spare--

112
  GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 0;    // 0=GPIO,  1=EPWM2B,  2=SPISOMI-D,  3=Resv

113
  GpioCtrlRegs.GPADIR.bit.GPIO3 = 0;    // 1=OUTput,  0=INput 

114
//  GpioDataRegs.GPACLEAR.bit.GPIO3 = 1;  // uncomment if --> Set Low initially

115
//  GpioDataRegs.GPASET.bit.GPIO3 = 1;    // uncomment if --> Set High initially

116
//--------------------------------------------------------------------------------------

117
//  GPIO-04 - PIN FUNCTION = --Spare--

118
  GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 0;    // 0=GPIO,  1=EPWM3A,  2=Resv,  3=Resv

119
  GpioCtrlRegs.GPADIR.bit.GPIO4 = 0;    // 1=OUTput,  0=INput 

120
//  GpioDataRegs.GPACLEAR.bit.GPIO4 = 1;  // uncomment if --> Set Low initially

121
//  GpioDataRegs.GPASET.bit.GPIO4 = 1;    // uncomment if --> Set High initially

122
//--------------------------------------------------------------------------------------

123
//  GPIO-05 - PIN FUNCTION = SPICLKD

124
  GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 0;    // 0=GPIO,  1=EPWM3B,  2=SPICLK-D,  3=ECAP1

125
  GpioCtrlRegs.GPADIR.bit.GPIO5 = 1;    // 1=OUTput,  0=INput 

126
//  GpioDataRegs.GPACLEAR.bit.GPIO5 = 1;  // uncomment if --> Set Low initially

127
//  GpioDataRegs.GPASET.bit.GPIO5 = 1;    // uncomment if --> Set High initially

128
//--------------------------------------------------------------------------------------

129
//  GPIO-06 - PIN FUNCTION = LED_C2

130
  GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 0;    // 0=GPIO,  1=EPWM4A,  2=SYNCI,  3=SYNCO

131
  GpioCtrlRegs.GPADIR.bit.GPIO6 = 1;    // 1=OUTput,  0=INput 

132
//  GpioDataRegs.GPACLEAR.bit.GPIO6 = 1;  // uncomment if --> Set Low initially

133
//  GpioDataRegs.GPASET.bit.GPIO6 = 1;    // uncomment if --> Set High initially

134
//--------------------------------------------------------------------------------------

135
//  GPIO-07 - PIN FUNCTION = --Spare--

136
  GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 0;    // 0=GPIO,  1=EPWM4B,  2=SPISTE-D,  3=ECAP2

137
  GpioCtrlRegs.GPADIR.bit.GPIO7 = 0;    // 1=OUTput,  0=INput 

138
//  GpioDataRegs.GPACLEAR.bit.GPIO7 = 1;  // uncomment if --> Set Low initially

139
//  GpioDataRegs.GPASET.bit.GPIO7 = 1;    // uncomment if --> Set High initially

140
//--------------------------------------------------------------------------------------

141
//  GPIO-08 - PIN FUNCTION = --Spare--

142
  GpioCtrlRegs.GPAMUX1.bit.GPIO8 = 0;    // 0=GPIO,  1=EPWM5A,  2=CANTX-B,  3=ADCSOC-A

143
  GpioCtrlRegs.GPADIR.bit.GPIO8 = 1;    // 1=OUTput,  0=INput 

144
//  GpioDataRegs.GPACLEAR.bit.GPIO8 = 1;  // uncomment if --> Set Low initially

145
//  GpioDataRegs.GPASET.bit.GPIO8 = 1;    // uncomment if --> Set High initially

146
//--------------------------------------------------------------------------------------

147
//  GPIO-09 - PIN FUNCTION = --Spare--

148
//  GpioCtrlRegs.GPAPUD.bit.GPIO9 = 0;     // Enable pull-up for GPIO9  (SCITXDB)//mychanges

149
  GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 2;    // 0=GPIO,  1=EPWM5B,  2=SCITX-B,  3=ECAP3

150
//  GpioCtrlRegs.GPADIR.bit.GPIO9 = 1;    // 1=OUTput,  0=INput 

151
//  GpioDataRegs.GPACLEAR.bit.GPIO9 = 1;  // uncomment if --> Set Low initially

152
//  GpioDataRegs.GPASET.bit.GPIO9 = 1;    // uncomment if --> Set High initially

153
//--------------------------------------------------------------------------------------

154
//  GPIO-10 - PIN FUNCTION = --Spare--

155
  GpioCtrlRegs.GPAMUX1.bit.GPIO10 = 0;  // 0=GPIO,  1=EPWM6A,  2=CANRX-B,  3=ADCSOC-B

156
  GpioCtrlRegs.GPADIR.bit.GPIO10 = 1;    // 1=OUTput,  0=INput 

157
//  GpioDataRegs.GPACLEAR.bit.GPIO10 = 1;  // uncomment if --> Set Low initially

158
//  GpioDataRegs.GPASET.bit.GPIO10 = 1;    // uncomment if --> Set High initially

159
//--------------------------------------------------------------------------------------

160
//  GPIO-11 - PIN FUNCTION = --Spare--

161
//  GpioCtrlRegs.GPAPUD.bit.GPIO11 = 0;    // Enable pull-up for GPIO11 (SCIRXDB)//mychanges

162
//  GpioCtrlRegs.GPAQSEL1.bit.GPIO11 = 3;  // Asynch input GPIO11 (SCIRXDB)//mychanges

163
  GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 2;  // 0=GPIO,  1=EPWM6B,  2=SCIRX-B,  3=ECAP4

164
//  GpioCtrlRegs.GPADIR.bit.GPIO11 = 0;    // 1=OUTput,  0=INput 

165
//  GpioDataRegs.GPACLEAR.bit.GPIO11 = 1;  // uncomment if --> Set Low initially

166
//  GpioDataRegs.GPASET.bit.GPIO11 = 1;    // uncomment if --> Set High initially

167
//--------------------------------------------------------------------------------------

168
//  GPIO-21 - PIN FUNCTION = --Spare--

169
  GpioCtrlRegs.GPAMUX2.bit.GPIO21 = 0;  // 0=GPIO,  1=EQEPB-1,  2=SPISOMI-C,  3=CANRX-B

170
  GpioCtrlRegs.GPADIR.bit.GPIO21 = 0;    // 1=OUTput,  0=INput 

171
//  GpioDataRegs.GPACLEAR.bit.GPIO21 = 1;  // uncomment if --> Set Low initially

172
//  GpioDataRegs.GPASET.bit.GPIO21 = 1;    // uncomment if --> Set High initially

173
//--------------------------------------------------------------------------------------

174
//  GPIO-12 - PIN FUNCTION = --Spare--

175
  GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 0;  // 0=GPIO,  1=TZ1,  2=CANTX-B,  3=SPISIMO-B

176
  GpioCtrlRegs.GPADIR.bit.GPIO12 = 1;    // 1=OUTput,  0=INput 

177
//  GpioDataRegs.GPACLEAR.bit.GPIO12 = 1;  // uncomment if --> Set Low initially

178
  GpioDataRegs.GPASET.bit.GPIO12 = 1;    // uncomment if --> Set High initially

179
//--------------------------------------------------------------------------------------

180
//  GPIO-13 - PIN FUNCTION = --Spare--

181
  GpioCtrlRegs.GPAMUX1.bit.GPIO13 = 0;  // 0=GPIO,  1=TZ2,  2=CANRX-B,  3=SPISOMI-B

182
  GpioCtrlRegs.GPADIR.bit.GPIO13 = 1;    // 1=OUTput,  0=INput 

183
//  GpioDataRegs.GPACLEAR.bit.GPIO13 = 1;  // uncomment if --> Set Low initially

184
//  GpioDataRegs.GPASET.bit.GPIO13 = 1;    // uncomment if --> Set High initially

185
//--------------------------------------------------------------------------------------

186
//  GPIO-14 - PIN FUNCTION = --Spare--

187
  GpioCtrlRegs.GPAMUX1.bit.GPIO14 = 0;  // 0=GPIO,  1=TZ3,  2=SCITX-B,  3=SPICLK-B

188
  GpioCtrlRegs.GPADIR.bit.GPIO14 = 1;    // 1=OUTput,  0=INput 

189
//  GpioDataRegs.GPACLEAR.bit.GPIO14 = 1;  // uncomment if --> Set Low initially

190
  GpioDataRegs.GPASET.bit.GPIO14 = 1;    // uncomment if --> Set High initially

191
//--------------------------------------------------------------------------------------

192
//  GPIO-15 - PIN FUNCTION = --Spare--

193
  GpioCtrlRegs.GPAMUX1.bit.GPIO15 = 0;  // 0=GPIO,  1=TZ4,  2=SCIRX-B,  3=SPISTE-B

194
  GpioCtrlRegs.GPADIR.bit.GPIO15 = 1;    // 1=OUTput,  0=INput 

195
//  GpioDataRegs.GPACLEAR.bit.GPIO15 = 1;  // uncomment if --> Set Low initially

196
  GpioDataRegs.GPASET.bit.GPIO15 = 1;    // uncomment if --> Set High initially

197
//--------------------------------------------------------------------------------------

198
//--------------------------------------------------------------------------------------

199
//  GPIO-16 - PIN FUNCTION = --Spare--

200
  GpioCtrlRegs.GPAMUX2.bit.GPIO16 = 0;  // 0=GPIO,  1=SPISIMO-A,  2=CANTX-B,  3=TZ5

201
  GpioCtrlRegs.GPADIR.bit.GPIO16 = 0;    // 1=OUTput,  0=INput 

202
//  GpioDataRegs.GPACLEAR.bit.GPIO16 = 1;  // uncomment if --> Set Low initially

203
//  GpioDataRegs.GPASET.bit.GPIO16 = 1;    // uncomment if --> Set High initially

204
//--------------------------------------------------------------------------------------

205
//  GPIO-17 - PIN FUNCTION = --Spare--

206
  GpioCtrlRegs.GPAMUX2.bit.GPIO17 = 0;  // 0=GPIO,  1=SPISOMI-A,  2=CANRX-B,  3=TZ6

207
  GpioCtrlRegs.GPADIR.bit.GPIO17 = 0;    // 1=OUTput,  0=INput 

208
//  GpioDataRegs.GPACLEAR.bit.GPIO17 = 1;  // uncomment if --> Set Low initially

209
//  GpioDataRegs.GPASET.bit.GPIO17 = 1;    // uncomment if --> Set High initially

210
//--------------------------------------------------------------------------------------

211
//  GPIO-18 - PIN FUNCTION = LED_C3

212
  GpioCtrlRegs.GPAMUX2.bit.GPIO18 = 0;  // 0=GPIO,  1=SPICLK-A,  2=SCITX-B,  3=Resv

213
  GpioCtrlRegs.GPADIR.bit.GPIO18 = 1;    // 1=OUTput,  0=INput 

214
//  GpioDataRegs.GPACLEAR.bit.GPIO18 = 1;  // uncomment if --> Set Low initially

215
//  GpioDataRegs.GPASET.bit.GPIO18 = 1;    // uncomment if --> Set High initially

216
//--------------------------------------------------------------------------------------

217
//  GPIO-19 - PIN FUNCTION = LED_C1

218
  GpioCtrlRegs.GPAMUX2.bit.GPIO19 = 0;  // 0=GPIO,  1=SPISTE-A,  2=SCIRX-B,  3=Resv

219
  GpioCtrlRegs.GPADIR.bit.GPIO19 = 1;    // 1=OUTput,  0=INput 

220
//  GpioDataRegs.GPACLEAR.bit.GPIO19 = 1;  // uncomment if --> Set Low initially

221
//  GpioDataRegs.GPASET.bit.GPIO19 = 1;    // uncomment if --> Set High initially

222
//--------------------------------------------------------------------------------------

223
//  GPIO-20 - PIN FUNCTION = --Spare--

224
  GpioCtrlRegs.GPAMUX2.bit.GPIO20 = 0;  // 0=GPIO,  1=EQEPA-1,  2=SPISIMO-C,  3=CANTX-B

225
  GpioCtrlRegs.GPADIR.bit.GPIO20 = 1;    // 1=OUTput,  0=INput 

226
//  GpioDataRegs.GPACLEAR.bit.GPIO20 = 1;  // uncomment if --> Set Low initially

227
//  GpioDataRegs.GPASET.bit.GPIO20 = 1;    // uncomment if --> Set High initially

228
229
//--------------------------------------------------------------------------------------

230
//  GPIO-22 - PIN FUNCTION = --Spare--

231
  GpioCtrlRegs.GPAMUX2.bit.GPIO22 = 0;  // 0=GPIO,  1=EQEPS-1,  2=SPICLK-C,  3=SCITX-B

232
  GpioCtrlRegs.GPADIR.bit.GPIO22 = 1;    // 1=OUTput,  0=INput 

233
//  GpioDataRegs.GPACLEAR.bit.GPIO22 = 1;  // uncomment if --> Set Low initially

234
//  GpioDataRegs.GPASET.bit.GPIO22 = 1;    // uncomment if --> Set High initially

235
//--------------------------------------------------------------------------------------

236
//  GPIO-23 - PIN FUNCTION = --Spare--

237
  GpioCtrlRegs.GPAMUX2.bit.GPIO23 = 0;  // 0=GPIO,  1=EQEPI-1,  2=SPISTE-C,  3=SCIRX-B

238
  GpioCtrlRegs.GPADIR.bit.GPIO23 = 0;    // 1=OUTput,  0=INput 

239
//  GpioDataRegs.GPACLEAR.bit.GPIO23 = 1;  // uncomment if --> Set Low initially

240
//  GpioDataRegs.GPASET.bit.GPIO23 = 1;    // uncomment if --> Set High initially

241
//--------------------------------------------------------------------------------------

242
//  GPIO-24 - PIN FUNCTION = --Spare--

243
  GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 0;  // 0=GPIO,  1=ECAP1,  2=EQEPA-2,  3=SPISIMO-B

244
  GpioCtrlRegs.GPADIR.bit.GPIO24 = 1;    // 1=OUTput,  0=INput 

245
//  GpioDataRegs.GPACLEAR.bit.GPIO24 = 1;  // uncomment if --> Set Low initially

246
//  GpioDataRegs.GPASET.bit.GPIO24 = 1;    // uncomment if --> Set High initially

247
//--------------------------------------------------------------------------------------

248
//  GPIO-25 - PIN FUNCTION = --Spare--

249
  GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 0;  // 0=GPIO,  1=ECAP2,  2=EQEPB-2,  3=SPISOMI-B

250
  GpioCtrlRegs.GPADIR.bit.GPIO25 = 0;    // 1=OUTput,  0=INput 

251
//  GpioDataRegs.GPACLEAR.bit.GPIO25 = 1;  // uncomment if --> Set Low initially

252
//  GpioDataRegs.GPASET.bit.GPIO25 = 1;    // uncomment if --> Set High initially

253
//--------------------------------------------------------------------------------------

254
//  GPIO-26 - PIN FUNCTION = --Spare--

255
  GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 0;  // 0=GPIO,  1=ECAP3,  2=EQEPI-2,  3=SPICLK-B

256
  GpioCtrlRegs.GPADIR.bit.GPIO26 = 1;    // 1=OUTput,  0=INput 

257
//  GpioDataRegs.GPACLEAR.bit.GPIO26 = 1;  // uncomment if --> Set Low initially

258
  GpioDataRegs.GPASET.bit.GPIO26 = 1;    // uncomment if --> Set High initially

259
//--------------------------------------------------------------------------------------

260
//  GPIO-27 - PIN FUNCTION = --Spare--

261
  GpioCtrlRegs.GPAMUX2.bit.GPIO27 = 0;  // 0=GPIO,  1=ECAP4,  2=EQEPS-2,  3=SPISTE-B

262
  GpioCtrlRegs.GPADIR.bit.GPIO27 = 1;    // 1=OUTput,  0=INput 

263
//  GpioDataRegs.GPACLEAR.bit.GPIO27 = 1;  // uncomment if --> Set Low initially

264
//  GpioDataRegs.GPASET.bit.GPIO27 = 1;    // uncomment if --> Set High initially

265
//--------------------------------------------------------------------------------------

266
//  GPIO-28 - PIN FUNCTION = SCI-RX

267
  GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 0;  // 0=GPIO,  1=SCIRX-A,  2=Resv,  3=TZ5

268
//  GpioCtrlRegs.GPADIR.bit.GPIO28 = 1;    // 1=OUTput,  0=INput 

269
//  GpioDataRegs.GPACLEAR.bit.GPIO28 = 1;  // uncomment if --> Set Low initially

270
//  GpioDataRegs.GPASET.bit.GPIO28 = 1;    // uncomment if --> Set High initially

271
//--------------------------------------------------------------------------------------

272
//  GPIO-29 - PIN FUNCTION = SCI-TX

273
  GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 0;  // 0=GPIO,  1=SCITXD-A,  2=Resv,  3=TZ6

274
//  GpioCtrlRegs.GPADIR.bit.GPIO29 = 0;    // 1=OUTput,  0=INput 

275
//  GpioDataRegs.GPACLEAR.bit.GPIO29 = 1;  // uncomment if --> Set Low initially

276
//  GpioDataRegs.GPASET.bit.GPIO29 = 1;    // uncomment if --> Set High initially

277
//--------------------------------------------------------------------------------------

278
//  GPIO-30 - PIN FUNCTION = --Spare--

279
  GpioCtrlRegs.GPAMUX2.bit.GPIO30 = 0;  // 0=GPIO,  1=CANRX-A,  2=Resv,  3=Resv

280
  GpioCtrlRegs.GPADIR.bit.GPIO30 = 1;    // 1=OUTput,  0=INput 

281
//  GpioDataRegs.GPACLEAR.bit.GPIO30 = 1;  // uncomment if --> Set Low initially

282
  GpioDataRegs.GPASET.bit.GPIO30 = 1;    // uncomment if --> Set High initially

283
//--------------------------------------------------------------------------------------

284
//  GPIO-31 - PIN FUNCTION = LED2 on controlCARD

285
  GpioCtrlRegs.GPAMUX2.bit.GPIO31 = 0;  // 0=GPIO,  1=CANTX-A,  2=Resv,  3=Resv

286
  GpioCtrlRegs.GPADIR.bit.GPIO31 = 1;    // 1=OUTput,  0=INput 

287
//  GpioDataRegs.GPACLEAR.bit.GPIO31 = 1;  // uncomment if --> Set Low initially

288
  GpioDataRegs.GPASET.bit.GPIO31 = 1;    // uncomment if --> Set High initially

289
//--------------------------------------------------------------------------------------

290
//--------------------------------------------------------------------------------------

291
//  GPIO-32 - PIN FUNCTION = --Spare--

292
  GpioCtrlRegs.GPBMUX1.bit.GPIO32 = 0;  // 0=GPIO,  1=I2C-SDA,  2=SYNCI,  3=ADCSOCA

293
  GpioCtrlRegs.GPBDIR.bit.GPIO32 = 1;    // 1=OUTput,  0=INput 

294
//  GpioDataRegs.GPBCLEAR.bit.GPIO32 = 1;  // uncomment if --> Set Low initially

295
//  GpioDataRegs.GPBSET.bit.GPIO32 = 1;    // uncomment if --> Set High initially

296
//--------------------------------------------------------------------------------------

297
//  GPIO-33 - PIN FUNCTION = --Spare--

298
  GpioCtrlRegs.GPBMUX1.bit.GPIO33 = 0;  // 0=GPIO,  1=I2C-SCL,  2=SYNCO,  3=ADCSOCB

299
  GpioCtrlRegs.GPBDIR.bit.GPIO33 = 1;    // 1=OUTput,  0=INput 

300
//  GpioDataRegs.GPBCLEAR.bit.GPIO33 = 1;  // uncomment if --> Set Low initially

301
//  GpioDataRegs.GPBSET.bit.GPIO33 = 1;    // uncomment if --> Set High initially

302
//--------------------------------------------------------------------------------------

303
//  GPIO-34 - PIN FUNCTION = LTA1

304
  GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0;  // 0=GPIO,  1=Resv,  2=Resv,  3=Resv

305
  GpioCtrlRegs.GPBDIR.bit.GPIO34 = 1;    // 1=OUTput,  0=INput 

306
//  GpioDataRegs.GPBCLEAR.bit.GPIO34 = 1;  // uncomment if --> Set Low initially

307
  GpioDataRegs.GPBSET.bit.GPIO34 = 1;    // uncomment if --> Set High initially

308
//--------------------------------------------------------------------------------------

309
  

310
  

311
  //mychanges

312
  // Interrupts that are used in this example are re-mapped to

313
// ISR functions found within this file.  

314
//   EALLOW;  // This is needed to write to EALLOW protected registers

315
//   PieVectTable.TINT0 = &cpu_timer0_isr;

316
//   EDIS;    // This is needed to disable write to EALLOW protected registers

317
  

318
  

319
  // Step 4. Initialize all the Device Peripherals:

320
// This function is found in DSP280x_InitPeripherals.c

321
// InitPeripherals(); // Not required for this example

322
//   InitCpuTimers();   // For this example, only initialize the Cpu Timers

323
  //mychanges

324
  

325
  // Configure CPU-Timer 0 to interrupt every second:

326
// 100MHz CPU Freq, 1 second Period (in uSeconds)

327
//   ConfigCpuTimer(&CpuTimer0, 100, 1000000);

328
//   StartCpuTimer0();

329
   // Enable CPU INT1 which is connected to CPU-Timer 0:

330
//   IER |= M_INT1;

331
332
// Enable TINT0 in the PIE: Group 1 interrupt 7

333
//   PieCtrlRegs.PIEIER1.bit.INTx7 = 1;

334
  

335
  EINT;//mychanges

336
  ERTM;   // Enable Global realtime interrupt DBGM, mychanges

337
       

338
  EDIS;  // Disable register access

339
}


  


  




  

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