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103 lines
2.6 KiB
103 lines
2.6 KiB
#include "uart.hpp"
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <iostream>
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using namespace iflytop;
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using namespace std;
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Uart::Uart() {}
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Uart::~Uart() {}
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static map<string, uint32_t> s_baundmap = {
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{"0", 0000000}, {"50", 0000001}, {"75", 0000002}, {"110", 0000003}, //
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{"134", 0000004}, {"150", 0000005}, {"200", 0000006}, {"300", 0000007}, //
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{"600", 0000010}, {"1200", 0000011}, {"1800", 0000012}, {"2400", 0000013}, //
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{"4800", 0000014}, {"9600", 0000015}, {"19200", 0000016}, {"38400", 0000017}, //
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{"57600", 0010001}, {"115200", 0010002}, {"230400", 0010003}, {"460800", 0010004}, //
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{"500000", 0010005}, {"576000", 0010006}, {"921600", 0010007}, {"1000000", 0010010}, //
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{"1152000", 0010011}, {"1500000", 0010012}, {"2000000", 0010013}, {"2500000", 0010014}, //
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{"3000000", 0010015}, {"3500000", 0010016}, {"4000000", 0010017},
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};
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int Uart::open(string path) {
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int rc;
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m_name = path;
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m_fd = ::open(path.c_str(), O_RDWR | O_NOCTTY);
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if (m_fd < 0) {
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cout << "open " << path << " failed" << endl;
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return -1;
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}
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memset(&m_tty, 0, sizeof(m_tty));
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m_tty.c_cflag |= CLOCAL | CREAD; // 激活本地连接与接受使能
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m_tty.c_cflag &= ~CSIZE; // 失能数据位屏蔽
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m_tty.c_cflag |= CS8; // 8位数据位
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m_tty.c_cflag &= ~CSTOPB; // 1位停止位
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m_tty.c_cflag &= ~PARENB; // 无校验位
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m_tty.c_cc[VTIME] = 0;
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m_tty.c_cc[VMIN] = 0;
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cfsetispeed(&m_tty, B115200); // 设置输入波特率
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cfsetospeed(&m_tty, B115200); // 设置输出波特率
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tcflush(m_fd, TCIFLUSH); // 刷清未处理的输入和/或输出
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/* Apply attributes */
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rc = tcsetattr(m_fd, TCSANOW, &m_tty);
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if (rc) {
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cout << "tcsetattr failed" << endl;
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return -3;
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}
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return 0;
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}
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int Uart::send(char *data, int size) {
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int sent = 0;
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sent = write(m_fd, data, size);
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if (sent > 0) {
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printf("send success, data is %s\r\n", data);
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} else {
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printf("send error!\r\n");
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}
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return sent;
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}
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int Uart::receive(char *data, int size_max) {
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int received = 0;
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received = read(m_fd, data, size_max);
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if (received > 0) {
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printf("recv success,recv size is %d,data is %s\r\n", received, data);
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Uart::send(data, received);
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}
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return received;
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}
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int Uart::close() {
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::close(m_fd);
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m_fd = -1;
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return 0;
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}
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bool Uart::flush_rx() {
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if (m_fd < 0) return false;
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int rc = tcflush(m_fd, TCIFLUSH);
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return rc == 0;
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}
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bool Uart::flush_tx() {
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if (m_fd < 0) return false;
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int rc = tcflush(m_fd, TCOFLUSH);
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return rc == 0;
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}
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