PIC18, MPLAB X IDE, XC8, UART, printf

PIC18, MPLAB X IDE, XC8, UART, printf

0. 참고 사항

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

1. HW 연결

2. 소스 설명

full 소스는 아래 github를 통해 확인하세요.

OSC 값이 INTIO67 인 경우에는 1MHz로

HS 인 경우에는 4MHz로 Clock이 설정됨

4MHz, 19200 baudrate

//#pragma config OSC = INTIO67 #pragma config OSC = HS TXSTA = 0x24;         // CSRC TX9 TXEN SYNC SENDB BRGH TRMT TX9D                           // 0    0   1    0    0     1    0    0                           // CSRC: Clock Source Select bit                           // TX9: 9-bit Transmit Enable bit                           // TXEN: Transmit Enable bit                           // SYNC: EUSART Mode Select bit                           // SENDB: Send Break Character bit                           // BRGH: High Baud Rate Select bit                           // TRMT: Transmit Shift Register Status bit                           // TX9D: 9th bit of Transmit Data     RCSTA = 0x90;         // SPEN RX9 SREN CREN ADDEN FERR OERR RX9D                           // 1    0   0    0    0     0    0    0                             // SPEN: Serial Port Enable bit                           // RX9: 9-bit Receive Enable bit                           // SREN: Single Receive Enable bit                           // CREN: Continuous Receive Enable bit                           // ADDEN: Address Detect Enable bit                           // FERR: Framing Error bit                           // OERR: Overrun Error bit                           // RX9D: 9th bit of Received Data         SPBRG = 12;           // 4MHz, 19200

3. 소스

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

4. 결과