1 | // CONFIG1H
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2 | #pragma config FOSC = XT // Oscillator Selection bits (Internal oscillator block)
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3 | #pragma config PLLCFG = OFF // 4X PLL Enable (Oscillator used directly)
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4 | #pragma config PRICLKEN = ON // Primary clock enable bit (Primary clock is always enabled)
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5 | #pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable bit (Fail-Safe Clock Monitor disabled)
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6 | #pragma config IESO = OFF // Internal/External Oscillator Switchover bit (Oscillator Switchover mode disabled)
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7 |
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8 | // CONFIG2L
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9 | #pragma config PWRTEN = OFF // Power-up Timer Enable bit (Power up timer disabled)
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10 | #pragma config BOREN = SBORDIS // Brown-out Reset Enable bits (Brown-out Reset enabled in hardware only (SBOREN is disabled))
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11 | #pragma config BORV = 190 // Brown Out Reset Voltage bits (VBOR set to 1.90 V nominal)
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12 |
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13 | // CONFIG2H
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14 | #pragma config WDTEN = OFF // Watchdog Timer Enable bits (Watch dog timer is always disabled. SWDTEN has no effect.)
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15 | #pragma config WDTPS = 32768 // Watchdog Timer Postscale Select bits (1:32768)
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16 |
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17 | // CONFIG3H
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18 | #pragma config CCP2MX = PORTC1 // CCP2 MUX bit (CCP2 input/output is multiplexed with RC1)
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19 | #pragma config PBADEN = ON // PORTB A/D Enable bit (PORTB<5:0> pins are configured as analog input channels on Reset)
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20 | #pragma config CCP3MX = PORTB5 // P3A/CCP3 Mux bit (P3A/CCP3 input/output is multiplexed with RB5)
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21 | #pragma config HFOFST = OFF // HFINTOSC Fast Start-up (HFINTOSC output and ready status are delayed by the oscillator stable status)
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22 | #pragma config T3CMX = PORTC0 // Timer3 Clock input mux bit (T3CKI is on RC0)
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23 | #pragma config P2BMX = PORTD2 // ECCP2 B output mux bit (P2B is on RD2)
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24 | #pragma config MCLRE = EXTMCLR // MCLR Pin Enable bit (MCLR pin enabled, RE3 input pin disabled)
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25 |
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26 | // CONFIG4L
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27 | #pragma config STVREN = ON // Stack Full/Underflow Reset Enable bit (Stack full/underflow will cause Reset)
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28 | #pragma config LVP = OFF // Single-Supply ICSP Enable bit (Single-Supply ICSP enabled if MCLRE is also 1)
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29 | #pragma config XINST = OFF // Extended Instruction Set Enable bit (Instruction set extension and Indexed Addressing mode disabled (Legacy mode))
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30 |
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31 | // CONFIG5L
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32 | #pragma config CP0 = OFF // Code Protection Block 0 (Block 0 (000800-001FFFh) not code-protected)
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33 | #pragma config CP1 = OFF // Code Protection Block 1 (Block 1 (002000-003FFFh) not code-protected)
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34 | #pragma config CP2 = OFF // Code Protection Block 2 (Block 2 (004000-005FFFh) not code-protected)
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35 | #pragma config CP3 = OFF // Code Protection Block 3 (Block 3 (006000-007FFFh) not code-protected)
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36 |
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37 | // CONFIG5H
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38 | #pragma config CPB = OFF // Boot Block Code Protection bit (Boot block (000000-0007FFh) not code-protected)
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39 | #pragma config CPD = OFF // Data EEPROM Code Protection bit (Data EEPROM not code-protected)
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40 |
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41 | // CONFIG6L
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42 | #pragma config WRT0 = OFF // Write Protection Block 0 (Block 0 (000800-001FFFh) not write-protected)
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43 | #pragma config WRT1 = OFF // Write Protection Block 1 (Block 1 (002000-003FFFh) not write-protected)
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44 | #pragma config WRT2 = OFF // Write Protection Block 2 (Block 2 (004000-005FFFh) not write-protected)
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45 | #pragma config WRT3 = OFF // Write Protection Block 3 (Block 3 (006000-007FFFh) not write-protected)
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46 |
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47 | // CONFIG6H
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48 | #pragma config WRTC = OFF // Configuration Register Write Protection bit (Configuration registers (300000-3000FFh) not write-protected)
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49 | #pragma config WRTB = OFF // Boot Block Write Protection bit (Boot Block (000000-0007FFh) not write-protected)
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50 | #pragma config WRTD = OFF // Data EEPROM Write Protection bit (Data EEPROM not write-protected)
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51 |
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52 | // CONFIG7L
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53 | #pragma config EBTR0 = OFF // Table Read Protection Block 0 (Block 0 (000800-001FFFh) not protected from table reads executed in other blocks)
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54 | #pragma config EBTR1 = OFF // Table Read Protection Block 1 (Block 1 (002000-003FFFh) not protected from table reads executed in other blocks)
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55 | #pragma config EBTR2 = OFF // Table Read Protection Block 2 (Block 2 (004000-005FFFh) not protected from table reads executed in other blocks)
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56 | #pragma config EBTR3 = OFF // Table Read Protection Block 3 (Block 3 (006000-007FFFh) not protected from table reads executed in other blocks)
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57 |
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58 | // CONFIG7H
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59 | #pragma config EBTRB = OFF // Boot Block Table Read Protection bit (Boot Block (000000-0007FFh) not protected from table reads executed in other blocks)
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60 |
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61 |
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62 |
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63 |
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64 |
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65 |
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66 | #include <p18f45k22.h>
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67 | #define USE_OR_MASKS
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68 | #include <plib/usart.h>
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69 |
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70 | unsigned char Rxdata[25];
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71 | unsigned char Txdata[] = "MICROCHIP_USART";
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72 |
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73 |
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74 |
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75 |
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76 | void main(void)
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77 | {
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78 | unsigned char config=0,spbrg=0,baudconfig=0,i=0;
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79 | Close1USART(); //turn off usart if was previously on
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80 | //-----configure USART -----
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81 | config = USART_TX_INT_OFF | USART_RX_INT_OFF | USART_ASYNCH_MODE | USART_EIGHT_BIT | USART_CONT_RX | USART_BRGH_HIGH;
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82 | //-----SPBRG needs to be changed depending upon oscillator frequency-------
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83 | spbrg = 25; //At 4Mhz of oscillator frequency & baud rate of 9600.
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84 | Open1USART(config, spbrg); //API configures USART for desired parameters
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85 | baudconfig = BAUD_8_BIT_RATE | BAUD_AUTO_OFF;
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86 | baud1USART (baudconfig);
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87 | //------USART Transmission ----
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88 | while(Busy1USART()); //Check if Usart is busy or not
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89 |
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90 | puts1USART((char *)Txdata); //transmit the string
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91 | //---USART Reception ---
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92 | gets1USART((char *)Rxdata,24); //Recieve data upto 24 bytes
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93 |
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94 | while(Busy1USART()); //Check if Usart is busy or not
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95 | puts1USART((char *)Rxdata); //echo back the data recieved back to host
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96 |
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97 | Close1USART();
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98 |
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99 | while(1); //end of program
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100 | }
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