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162 lines
3.2 KiB
C++
162 lines
3.2 KiB
C++
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <jni.h>
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#include "SerialPort.h"
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#include "android/log.h"
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#ifdef DEPENDING_GPIO
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#include "GPIOControl.h"
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#endif
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static const char *TAG = "serial_port";
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#define LOGI(fmt, args...) __android_log_print(ANDROID_LOG_INFO, TAG, fmt, ##args)
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#define LOGD(fmt, args...) __android_log_print(ANDROID_LOG_DEBUG, TAG, fmt, ##args)
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#define LOGE(fmt, args...) __android_log_print(ANDROID_LOG_ERROR, TAG, fmt, ##args)
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/*
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static speed_t getBaudrate(int baudrate)
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{
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switch(baudrate) {
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case 0: return B0;
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case 50: return B50;
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case 75: return B75;
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case 110: return B110;
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case 134: return B134;
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case 150: return B150;
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case 200: return B200;
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case 300: return B300;
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case 600: return B600;
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case 1200: return B1200;
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case 1800: return B1800;
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case 2400: return B2400;
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case 4800: return B4800;
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case 9600: return B9600;
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case 19200: return B19200;
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case 38400: return B38400;
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case 57600: return B57600;
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case 115200: return B115200;
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case 230400: return B230400;
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case 460800: return B460800;
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case 500000: return B500000;
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case 576000: return B576000;
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case 921600: return B921600;
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case 1000000: return B1000000;
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case 1152000: return B1152000;
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case 1500000: return B1500000;
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case 2000000: return B2000000;
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case 2500000: return B2500000;
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case 3000000: return B3000000;
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case 3500000: return B3500000;
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case 4000000: return B4000000;
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default: return -1;
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}
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}
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*/
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bool CSerialPort::Open(const char* path, speed_t baudrate, int stopBits, int dataBits, int parity, int flowCon, int flags)
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{
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if (baudrate == -1) {
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return false;
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}
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/* Opening device */
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{
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fd = open(path, O_RDWR | flags);
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if (fd == -1) {
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return false;
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}
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}
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/* Configure device */
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{
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struct termios cfg;
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if (tcgetattr(fd, &cfg))
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{
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close(fd);
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return false;
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}
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cfmakeraw(&cfg);
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cfsetispeed(&cfg, baudrate);
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cfsetospeed(&cfg, baudrate);
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cfg.c_cflag &= ~CSIZE;
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switch (dataBits) {
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case CS5:
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case CS6:
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case CS7:
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case CS8:
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cfg.c_cflag |= dataBits; //使用8位数据位
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break;
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default:
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cfg.c_cflag |= CS8;
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break;
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}
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switch (parity) {
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case 0:
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cfg.c_cflag &= ~PARENB; //无奇偶校验
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break;
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case 1:
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cfg.c_cflag |= (PARODD | PARENB); //奇校验
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break;
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case 2:
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cfg.c_iflag &= ~(IGNPAR | PARMRK); // 偶校验
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cfg.c_iflag |= INPCK;
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cfg.c_cflag |= PARENB;
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cfg.c_cflag &= ~PARODD;
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break;
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default:
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cfg.c_cflag &= ~PARENB;
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break;
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}
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switch (stopBits) {
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case 1:
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cfg.c_cflag &= ~CSTOPB; //1位停止位
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break;
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case 2:
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cfg.c_cflag |= CSTOPB; //2位停止位
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break;
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default:
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break;
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}
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// hardware flow control
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switch (flowCon) {
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case 0:
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cfg.c_cflag &= ~CRTSCTS; //不使用流控
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break;
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case 1:
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cfg.c_cflag |= CRTSCTS; //硬件流控
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break;
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case 2:
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cfg.c_cflag |= IXON | IXOFF | IXANY; //软件流控
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break;
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default:
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cfg.c_cflag &= ~CRTSCTS;
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break;
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}
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if (tcsetattr(fd, TCSANOW, &cfg)) {
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LOGE("tcsetattr() failed");
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close(fd);
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/* TODO: throw an exception */
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return false;
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}
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}
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return true;
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}
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void CSerialPort::Close()
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{
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close(fd);
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} |