1. /*
2.  * Project name:
3.      UART (Simple usage of UART module library functions)
4.  * Copyright:
5.      (c) Mikroelektronika, 2011.
6.  * Revision History:
7.      20110929:
8.        - initial release (FJ);
9.  * Description:
10.      This code demonstrates how to use uart library routines. Upon receiving
11.      data via RS232, MCU immediately sends it back to the sender.
12.  * Test configuration:
13.      MCU:             PIC18F45K22
14.                       http://ww1.microchip.com/downloads/en/DeviceDoc/41412D.pdf
15.      Dev.Board:       EasyPIC7 - ac:UART
16.                       http://www.mikroe.com/eng/products/view/757/easypic-v7-development-system/
17.      Oscillator:      HS-PLL 32.0000 MHz, 8.0000 MHz Crystal
18.      Ext. Modules:    None.
19.      SW:              mikroC PRO for PIC
20.                       http://www.mikroe.com/eng/products/view/7/mikroc-pro-for-pic/
21.  * NOTES:
22.      - Turn on RX and TX UART switches (SW1.1 and SW2.1). (board specific)
23.      - Put RX and TX UART jumpers (J3 and J4) in RS-232 or USB position,
24.        depending on your choice (board specific).
25.  */
26.  
27. sbit LCD_RS at LATB4_bit;
28. sbit LCD_EN at LATB5_bit;
29. sbit LCD_D4 at LATB0_bit;
30. sbit LCD_D5 at LATB1_bit;
31. sbit LCD_D6 at LATB2_bit;
32. sbit LCD_D7 at LATB3_bit;
33.  
34. sbit LCD_RS_Direction at TRISB4_bit;
35. sbit LCD_EN_Direction at TRISB5_bit;
36. sbit LCD_D4_Direction at TRISB0_bit;
37. sbit LCD_D5_Direction at TRISB1_bit;
38. sbit LCD_D6_Direction at TRISB2_bit;
39. sbit LCD_D7_Direction at TRISB3_bit;
40.  
41. char uart_rd;
42. char uart_putty[]="I display whatever you typen";
43. char txt[6]="Start";
44. char txtToDisplay[200] = "";
45. int i=0;
46.  
47. void main() {
48.   //ANSELC = 0;                     // Configure PORTC pins as digital
49.   ADCON1 = 0x0F;
50.  
51.  
52.   Lcd_Init();                        // Initialize Lcd
53.   Lcd_Cmd(_LCD_CLEAR);
54.   Lcd_Cmd(_LCD_CURSOR_OFF);
55.   Lcd_Out(1,1,txt);
56.  
57.  
58.   UART1_Init(9600);               // Initialize UART module at 9600 bps
59.   Delay_ms(100);                  // Wait for UART module to stabilize
60.  
61.  
62.   UART1_Write_Text(uart_putty);
63.   UART1_Write(13);
64.   UART1_Write(10);
65.  
66.  
67.   while (1) {                     // Endless loop
68.       if (UART1_Data_Ready()) {     // If data is received,
69.       uart_rd = UART1_Read();     // read the received data,
70.       UART1_Write(uart_rd);
71.       txtToDisplay[i] = uart_rd;
72.       Lcd_Out(2,1,txtToDisplay);
73.       i++;
74.       // and send data via UART
75.     }
76.   }
77. }
78.  
79.  
80.  
81.