1 | #include <stdint.h>
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2 |
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3 | #define IP_adress PORTF
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4 | #define ON 1
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5 | #define OFF 0
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6 | #define TLI4970 1
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7 | #define LTC6804 0
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8 | #define IDmaster 255
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9 |
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10 | // LCD module connections
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11 | sbit LCD_RS at LATD4_bit;
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12 | sbit LCD_EN at LATD6_bit;
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13 | sbit LCD_D4 at LATD0_bit;
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14 | sbit LCD_D5 at LATD1_bit;
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15 | sbit LCD_D6 at LATD2_bit;
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16 | sbit LCD_D7 at LATD3_bit;
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17 |
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18 | sbit LCD_RS_Direction at TRISD4_bit;
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19 | sbit LCD_EN_Direction at TRISD6_bit;
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20 | sbit LCD_D4_Direction at TRISD0_bit;
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21 | sbit LCD_D5_Direction at TRISD1_bit;
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22 | sbit LCD_D6_Direction at TRISD2_bit;
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23 | sbit LCD_D7_Direction at TRISD3_bit;
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24 | // End LCD module connections
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25 |
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26 | // ECAN module connections
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27 | // End ECAN module connections
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28 |
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29 |
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30 | /*******************************************************************************
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31 | Variables
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32 | *******************************************************************************/
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33 | unsigned int IDmodule=0, IDmodule2 = 9;
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34 | short int lcd_line[4][20];
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35 |
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36 | //----------------- CAN --------------------------------------------------
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37 | unsigned unsigned short Can_Init_Flags, Can_Send_Flags, Can_Rcv_Flags; // can flags
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38 | unsigned unsigned short Rx_Data_Len, dt, cell_count[2]; // received data length in bytes
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39 | unsigned short Rx_Data[8], Tx_Data[8], RxTx_Data[8]; // can rx/tx data 8-bytes buffer
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40 | unsigned short Msg_Rcvd = 0;
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41 | unsigned int Rx_ID, Tx_ID, i, j, h, k, adc_rd;
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42 | int pin_mux[13] = {0x0E, 0x0C, 0x0A, 0x08, 0x06, 0x04, 0x02, 0x00, 0x1C, 0x1E, 0x18, 0x16, 0x1A};
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43 | unsigned int temp_values[2][13]; //Line1 cell voltage & curren, line2 temperature
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44 |
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45 | const unsigned short SJW = 1;
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46 | const unsigned short BRP = 1;
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47 | const unsigned short Propagation = 1;
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48 | const unsigned short Phase1 = 4;
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49 | const unsigned short Phase2 = 3;
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50 |
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51 |
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52 | void init() {
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53 | ANCON0 = 0x01; // RA0 as analog input
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54 | ANCON1 = 0x00; // No analog inputs
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55 |
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56 | TRISA = 0x01; // set PORTA as output except RA0
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57 | LATA = 0x00; // clear PORTA
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58 |
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59 | TRISB = 0x00; // set PORTB as output
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60 | LATB = 0x00; // clear PORTA
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61 |
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62 | TRISC = 0x08; // RC3(SCK) & RC4(SDI) as input, others as output
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63 | PORTC = 0x00; // clear PORTC
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64 |
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65 | TRISD = 0x00; // set PORTD as output
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66 | TRISE = 16; // RE4(CAN RX) as input, others as output (CAN TX)
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67 | WPUB = 0x00; // Disable all PORTB pull-up resistors
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68 | TRISF = 0xFF; // set PORTF as input
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69 |
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70 | Delay_ms(1000);
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71 | IDmodule = (IP_adress & 0xff);
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72 | Lcd_Cmd(_LCD_CLEAR); // Clear display
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73 | Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
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74 | sprintf(lcd_line[0], "ID Module = %u v01", IDmodule); //The pec_error variable is simply set negative if any PEC errors
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75 | Lcd_Out(1,1, lcd_line[0]);
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76 | Delay_ms(4000);
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77 | }
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78 | //------------------------------------------------------------------------------
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79 | // CAN Configuration
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80 | //------------------------------------------------------------------------------
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81 | void configureCAN(void)
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82 | {
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83 | Can_Init_Flags = 0; //
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84 | Can_Send_Flags = 0; // clear flags
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85 | Can_Rcv_Flags = 0; //
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86 |
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87 | Can_Send_Flags = _CAN_TX_PRIORITY_0 & // form value to be used
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88 | _CAN_TX_STD_FRAME & // with CANWrite
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89 | _CAN_TX_NO_RTR_FRAME;
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90 |
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91 | Can_Init_Flags = _CAN_CONFIG_SAMPLE_THRICE & // form value to be used
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92 | _CAN_CONFIG_PHSEG2_PRG_ON & // with CANInit
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93 | _CAN_CONFIG_STD_MSG &
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94 | _CAN_CONFIG_DBL_BUFFER_ON &
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95 | _CAN_CONFIG_VALID_STD_MSG &
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96 | _CAN_CONFIG_LINE_FILTER_ON;
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97 |
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98 | CANInitialize(SJW, BRP, Phase1, Phase2, Propagation, Can_Init_Flags); // initialize external CAN module
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99 |
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100 | CANSetOperationMode(_CAN_MODE_CONFIG,0xFF); // set CONFIGURATION mode (blocking call)
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101 |
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102 | CANSetMask(_CAN_MASK_B1,0x0180,_CAN_CONFIG_STD_MSG); // set all mask1 bits to ones
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103 | CANSetMask(_CAN_MASK_B2,0xFFFF,_CAN_CONFIG_STD_MSG); // set all bits to 1
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104 |
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105 | CANSetFilter(_CAN_FILTER_B1_F1, 0x0080,_CAN_CONFIG_STD_MSG); // receive messages with bit 9 = 0 and 8 = 1
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106 | CANSetFilter(_CAN_FILTER_B1_F2, 0x0180,_CAN_CONFIG_STD_MSG); // receive messages with bit 9 = 1 and 8 = 1
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107 |
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108 | // CANSetFilter(_CAN_FILTER_B2_F1, 0x0000,_CAN_CONFIG_STD_MSG); // receive messages with identifier = 0
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109 | // CANSetFilter(_CAN_FILTER_B2_F2, 0x0001,_CAN_CONFIG_STD_MSG); // receive messages with identifier = 1
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110 | CANSetFilter(_CAN_FILTER_B2_F3, IDmodule2,_CAN_CONFIG_STD_MSG); // receive messages with identifier = 2
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111 | CANSetFilter(_CAN_FILTER_B2_F4, IDmodule,_CAN_CONFIG_STD_MSG); // receive messages with identifier = IDmodule
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112 |
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113 | CANSetOperationMode(_CAN_MODE_NORMAL,0xFF); // set NORMAL mode
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114 | }
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115 |
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116 |
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117 | void main()
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118 | {
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119 | init(); // Perform main initialization
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120 | ADC_Init(); // Initialize ADC module with default settings
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121 | configureCAN(); // Configure CAN module
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122 | Lcd_Init();
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123 |
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124 | while(1)
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125 | {
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126 | PORTC = 0x1;
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127 | Delay_ms(500);
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128 | PORTC = 0x0;
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129 | Delay_ms (500);
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130 |
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131 |
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132 | for(k=0;k<4;k++)
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133 | {
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134 | PORTB = pin_mux[k]; // set MUX/I0
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135 | Delay_ms(1);
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136 | adc_rd = ADC_Read(0); // get ADC value from 0st channel
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137 | temp_values[1][k] = adc_rd;
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138 | sprintf(lcd_line[k], "Voltage = %u V", temp_values[1][k]); // Trim the string from leading spaces
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139 | Lcd_Out(k+1,1, lcd_line[k]);
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140 | PORTC = 0x2;
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141 | Delay_ms(500);
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142 | PORTC = 0x1;
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143 | }
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144 | }
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145 | }
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