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62 lines
1.1 KiB
C++
62 lines
1.1 KiB
C++
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#include <termios.h>
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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 <errno.h>
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#include <string.h>
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#include <android/log.h>
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#include <string>
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#include "SpiPort.h"
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SpiPort::SpiPort(const std::string& path) : m_path(path), m_fd(0)
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{
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}
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SpiPort::~SpiPort()
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{
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if (m_fd > 0)
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{
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close(m_fd);
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}
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}
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bool SpiPort::Open()
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{
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if(m_fd <= 0) m_fd = open(m_path.c_str(), O_RDWR/*|O_NDELAY|O_NOCTTY*/);
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if(m_fd <= 0 ) {
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int err = errno;
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m_log = "open spi Error errno=" + std::to_string(err);
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__android_log_print(ANDROID_LOG_INFO, "SPi", "open spi Error errno=%d", err);
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return false;
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}
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else __android_log_print(ANDROID_LOG_INFO, "SPi", "open spi Success m_fd=%d",m_fd);
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return true;
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}
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// write
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int SpiPort::Write(unsigned char *buf, int len)
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{
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return write(m_fd, buf, len);
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}
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// read
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int SpiPort::Read(unsigned char *buf, int len)
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{
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return read(m_fd, buf, len);
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}
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//close
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bool SpiPort::Close()
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{
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if(m_fd > 0)
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{
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close(m_fd);
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m_fd = 0;
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}
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return true;
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} |