PIC18, MPLAB X IDE, XC8, GPIO, BlinkLED

PIC18, MPLAB X IDE, XC8, GPIO, BlinkLED

Did you have a look at the example codes for the MCU that is provided by TI for almost every processor?

www.ti.com/lit/zip/slac536

The following examples show how to set up the clocks:

msp430fr59xx_cs_01.c       Configure MCLK for 8MHz operation
msp430fr59xx_cs_02.c       Configure MCLK for 16MHz operation
msp430fr59xx_cs_03.c       Output 32768Hz crystal on XT1 and observe failsafe
msp430fr59xx_cs_04.c       ACLK = XT1 = 32768Hz, SMCLK= XT2 = 8MHz, MCLK = DCO
msp430fr59xx_cs_05.c       Using LFXT in bypass mode, failsafe operation shown

0. 참고 사항

• C:\ti\msp\MSP430Ware_3_80_04_05\examples\devices\MSP430FR5xx_6xx\MSP430FR5x8x_MSP430FR692x_MSP430FR6x7x_MSP430FR6x8x_Code_Examples\C
  
• http://e2e.ti.com/support/microcontrollers/msp430/f/166/p/368560/1297094
• https://github.com/achopra6/MSP430FR6989/blob/master/timer.c
• http://www.ti.com/lit/ds/symlink/msp430fr6989.pdf
• http://www.ti.com/lit/ug/slau367o/slau367o.pdf

출처: http://coyoteugly.tistory.com/188 [마이콤 개발자를 위한 여행]

0. 참고 사항

• [  ] https://www.microchip.com/wwwproducts/en/PIC18F4520
• [ datasheet ] http://ww1.microchip.com/downloads/en/devicedoc/39631a.pdf

1. HW 연결

2. New Project > Microchip Embedded > Standalone Project

3. Device > PIC18F4520

4. Hardware Tools > PICkit3

5. Compiler > XC8

6. Project Name > BlinkLED

7. New File > Microchip Embedded > XC8 Compiler > main.c

8. File Name

9. main.c

10. Production > Set Configuration Bits

11. Set Configuration Bits & Generate Source Code to Output

• OSC > INTIO67
• Internal oscillator 쓸려고
  
• WDT > OFF
• watchdog 쓰지 않으므로
  
• LVP > OFF
• RB5 port에 영향을 줍니다.
  

12. Generate Source Code to Output

출력된 코드를 main 소스에 붙여넣기합니다.

13.

14. Production > Build Main Project [ F11 ]

15. Download

Make and Program Device Main Project

16. 소스 설명

full 소스는 아래 github를 통해 확인하세요.

// CONFIG1H //#pragma config OSC = RCIO6      // Oscillator Selection bits (External RC oscillator, port function on RA6) #pragma config OSC = INTIO67    // Oscillator Selection bits (Internal oscillator block, port function on RA6 and RA7) // CONFIG2H #pragma config WDT = OFF        // Watchdog Timer Enable bit (WDT disabled (control is placed on the SWDTEN bit)) // CONFIG4L //#pragma config LVP = ON         // Single-Supply ICSP Enable bit (Single-Supply ICSP enabled) #pragma config LVP = OFF        // Single-Supply ICSP Enable bit (Single-Supply ICSP disabled) #include <xc.h> /*     _XTAL_FREQ를 선언해 주고     pic18.h를 include하면     __delay_ms, _delay_us 등의 함수를 사용할 수 있습니다. */ #define _XTAL_FREQ 1000000 #include <pic18.h> void main(void)                 {     TRISB=0;     PORTB=0;     while(1)                    {            PORTB=0x00;         __delay_ms(500);         PORTB=0xff;         __delay_ms(500);     }     return; }

17. 소스

• https://github.com/sglee0223/pic18/tree/master/BlinkLED.X
  

18. 결과

500ms 단위로 동작합니다.