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UART.cpp
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102 lines (88 loc) · 2.08 KB
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#include "UART.h"
/*
* Roverdyn UART Library
* Created at Jan. 14, 2020
* Author : Seonguk Jeong
* Copyright to 2019 Seonguk Jeong. All rights reserved.
* Contact : jswcomkr@roverdyn.com
*/
void _Serial::begin(uint32_t baudrate){
// UART 통신 초기화 함수
NRF_UART0->TASKS_STOPTX = 1;
NRF_UART0->TASKS_STOPRX = 1;
NRF_UART0->ENABLE = 0;
NRF_UART0->PSELTXD = PIN_UART_TXD;
NRF_UART0->PSELRXD = PIN_UART_RXD;
NRF_UART0->CONFIG = 0x00;
// Buadrate 설정
switch(baudrate){
case 4800:
NRF_UART0->BAUDRATE = 0x0013B000;
break;
case 9600:
NRF_UART0->BAUDRATE = 0x00275000;
break;
case 19200:
NRF_UART0->BAUDRATE = 0x004EA000;
break;
case 38400:
NRF_UART0->BAUDRATE = 0x009D5000;
break;
case 57600:
NRF_UART0->BAUDRATE = 0x00EBF000;
break;
case 115200:
NRF_UART0->BAUDRATE = 0x01D7E000;
break;
case 230400:
NRF_UART0->BAUDRATE = 0x03AFB000;
break;
case 460800:
NRF_UART0->BAUDRATE = 0x075F7000;
break;
default:
NRF_UART0->BAUDRATE = 0x01D7E000;
break;
}
NRF_UART0->INTENCLR = 0x01 | (0x01 << 1) | (0x01 << 2) | (0x01 << 7) | (0x01 << 9) | (0x01 << 17);
NRF_UART0->ENABLE = 4;
NRF_UART0->TASKS_STARTTX = 1;
NRF_UART0->TASKS_STARTRX = 1;
}
void _Serial::end(){
// UART 통신 종료 함수
NRF_UART0->ENABLE = 0;
}
uint16_t _Serial::print(const char *message){
// UART TXD 함수(줄바꿈 없음)
uint16_t len = strlen(message);
for(uint8_t i=0;i<len;i++){
NRF_UART0->TXD = message[i];
while(!NRF_UART0->EVENTS_TXDRDY){}
NRF_UART0->EVENTS_TXDRDY = 0;
}
return len;
}
uint16_t _Serial::println(const char *message){
// UART TXD 함수(줄바꿈 있음)
uint16_t len = strlen(message);
for(uint8_t i=0;i<len;i++){
NRF_UART0->TXD = message[i];
while(!NRF_UART0->EVENTS_TXDRDY){}
NRF_UART0->EVENTS_TXDRDY = 0;
}
NRF_UART0->TXD = 10;
while(!NRF_UART0->EVENTS_TXDRDY){}
NRF_UART0->EVENTS_TXDRDY = 0;
NRF_UART0->TXD = 13;
while(!NRF_UART0->EVENTS_TXDRDY){}
NRF_UART0->EVENTS_TXDRDY = 0;
return len;
}
uint16_t _Serial::available(){
uint16_t output = 0;
return output;
}
uint8_t _Serial::read(){
return NRF_UART0->RXD;
}