upm/src/wt5001/wt5001.cxx
Noel Eck cdc33ceb9f bitbake: Fix for pthreads C test w/yocto
Fixed a problem where the C/CXX compile flags were getting
overwritten.  Fixed warnings in a few sensor drivers.

This commit fixes #485

Signed-off-by: Noel Eck <noel.eck@intel.com>
2016-11-08 16:28:54 -08:00

633 lines
13 KiB
C++

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <sstream>
#include <string>
#include <stdexcept>
#include "wt5001.hpp"
using namespace upm;
using namespace std;
static const int defaultDelay = 100; // max wait time for read
WT5001::WT5001(int uart)
{
m_ttyFd = -1;
if ( !(m_uart = mraa_uart_init(uart)) )
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_uart_init() failed");
return;
}
// This requires a recent MRAA (1/2015)
const char *devPath = mraa_uart_get_dev_path(m_uart);
if (!devPath)
{
throw std::runtime_error(std::string(__FUNCTION__) +
": mraa_uart_get_dev_path() failed");
return;
}
// now open the tty
if ( (m_ttyFd = open(devPath, O_RDWR)) == -1)
{
throw std::runtime_error(std::string(__FUNCTION__) +
": open of " +
string(devPath) + " failed: " +
string(strerror(errno)));
return;
}
}
WT5001::~WT5001()
{
if (m_ttyFd != -1)
close(m_ttyFd);
mraa_deinit();
}
bool WT5001::dataAvailable(unsigned int millis)
{
if (m_ttyFd == -1)
return false;
struct timeval timeout;
// no waiting
timeout.tv_sec = 0;
timeout.tv_usec = millis * 1000;
fd_set readfds;
FD_ZERO(&readfds);
FD_SET(m_ttyFd, &readfds);
if (select(m_ttyFd + 1, &readfds, NULL, NULL, &timeout) > 0)
return true; // data is ready
else
return false;
}
int WT5001::readData(char *buffer, int len)
{
if (m_ttyFd == -1)
return(-1);
if (!dataAvailable(defaultDelay))
return 0; // timed out
int rv = read(m_ttyFd, buffer, len);
if (rv < 0)
{
throw std::runtime_error(std::string(__FUNCTION__) +
": read() failed: " +
string(strerror(errno)));
return rv;
}
return rv;
}
int WT5001::writeData(char *buffer, int len)
{
if (m_ttyFd == -1)
return(-1);
// first, flush any pending but unread input
tcflush(m_ttyFd, TCIFLUSH);
int rv = write(m_ttyFd, buffer, len);
if (rv < 0)
{
throw std::runtime_error(std::string(__FUNCTION__) +
": write() failed: " +
string(strerror(errno)));
return rv;
}
tcdrain(m_ttyFd);
return rv;
}
bool WT5001::setupTty(speed_t baud)
{
if (m_ttyFd == -1)
return(false);
struct termios termio;
// get current modes
tcgetattr(m_ttyFd, &termio);
// setup for a 'raw' mode. 81N, no echo or special character
// handling, such as flow control.
cfmakeraw(&termio);
// set our baud rates
cfsetispeed(&termio, baud);
cfsetospeed(&termio, baud);
// make it so
if (tcsetattr(m_ttyFd, TCSAFLUSH, &termio) < 0)
{
throw std::runtime_error(std::string(__FUNCTION__) +
": tcsetattr() failed: " +
string(strerror(errno)));
return false;
}
return true;
}
bool WT5001::checkResponse(WT5001_OPCODE_T opcode)
{
char resp;
char fopcode = (char)opcode;
int rv = readData(&resp, 1);
// check for wrong response byte, or timeout
if ((resp != fopcode) || rv == 0 )
return false;
return true;
}
bool WT5001::play(WT5001_PLAYSOURCE_T psrc, uint16_t index)
{
char pkt[6];
WT5001_OPCODE_T opcode = PLAY_SD;
pkt[0] = WT5001_START;
pkt[1] = 0x04; // length
switch (psrc) // src
{
case SD:
opcode = PLAY_SD;
break;
case SPI:
opcode = PLAY_SPI;
break;
case UDISK:
opcode = PLAY_UDISK;
break;
}
pkt[2] = opcode;
pkt[3] = (index >> 8) & 0xff; // index hi
pkt[4] = index & 0xff; // index lo
pkt[5] = WT5001_END;
writeData(pkt, 6);
return checkResponse(opcode);
}
bool WT5001::stop()
{
char pkt[4];
WT5001_OPCODE_T opcode = STOP;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
return checkResponse(opcode);
}
bool WT5001::next()
{
char pkt[4];
WT5001_OPCODE_T opcode = NEXT;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
return checkResponse(opcode);
}
bool WT5001::previous()
{
char pkt[4];
WT5001_OPCODE_T opcode = PREVIOUS;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
return checkResponse(opcode);
}
bool WT5001::pause()
{
char pkt[4];
WT5001_OPCODE_T opcode = PAUSE;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
return checkResponse(opcode);
}
bool WT5001::setVolume(uint8_t vol)
{
if (vol > WT5001_MAX_VOLUME)
{
// C++11 std::to_string() would be nice, but...
std::ostringstream str;
str << WT5001_MAX_VOLUME;
throw std::out_of_range(std::string(__FUNCTION__) +
": angle must be between 0 and " +
str.str());
return false;
}
char pkt[5];
WT5001_OPCODE_T opcode = SET_VOLUME;
pkt[0] = WT5001_START;
pkt[1] = 0x03; // length
pkt[2] = opcode;
pkt[3] = vol;
pkt[4] = WT5001_END;
writeData(pkt, 5);
return checkResponse(opcode);
}
bool WT5001::queue(uint16_t index)
{
char pkt[6];
WT5001_OPCODE_T opcode = QUEUE;
pkt[0] = WT5001_START;
pkt[1] = 0x04; // length
pkt[2] = opcode;
pkt[3] = (index >> 8) & 0xff; // index hi
pkt[4] = index & 0xff; // index lo
pkt[5] = WT5001_END;
writeData(pkt, 6);
return checkResponse(opcode);
}
bool WT5001::setPlayMode(WT5001_PLAYMODE_T pm)
{
char pkt[5];
WT5001_OPCODE_T opcode = PLAY_MODE;
pkt[0] = WT5001_START;
pkt[1] = 0x03; // length
pkt[2] = opcode;
pkt[3] = pm;
pkt[4] = WT5001_END;
writeData(pkt, 5);
return checkResponse(opcode);
}
bool WT5001::insert(uint16_t index)
{
char pkt[6];
WT5001_OPCODE_T opcode = INSERT_SONG;
pkt[0] = WT5001_START;
pkt[1] = 0x04; // length
pkt[2] = opcode;
pkt[3] = (index >> 8) & 0xff; // index hi
pkt[4] = index & 0xff; // index lo
pkt[5] = WT5001_END;
writeData(pkt, 6);
return checkResponse(opcode);
}
bool WT5001::setDate(uint16_t year, uint8_t month, uint8_t day)
{
char pkt[8];
WT5001_OPCODE_T opcode = SET_DATE;
pkt[0] = WT5001_START;
pkt[1] = 0x06; // length
pkt[2] = opcode;
pkt[3] = (year >> 8) & 0xff; // year hi
pkt[4] = year & 0xff; // year lo
pkt[5] = month; // month
pkt[6] = day; // day
pkt[7] = WT5001_END;
writeData(pkt, 8);
return checkResponse(opcode);
}
bool WT5001::setTime(uint8_t hour, uint8_t minute, uint8_t second)
{
char pkt[7];
WT5001_OPCODE_T opcode = SET_TIME;
pkt[0] = WT5001_START;
pkt[1] = 0x05; // length
pkt[2] = opcode;
pkt[3] = hour; // hour
pkt[4] = minute; // minute
pkt[5] = second; // second
pkt[6] = WT5001_END;
writeData(pkt, 7);
return checkResponse(opcode);
}
bool WT5001::setAlarm(uint8_t hour, uint8_t minute, uint8_t second)
{
char pkt[7];
WT5001_OPCODE_T opcode = SET_ALARM;
pkt[0] = WT5001_START;
pkt[1] = 0x05; // length
pkt[2] = opcode;
pkt[3] = hour; // hour
pkt[4] = minute; // minute
pkt[5] = second; // second
pkt[6] = WT5001_END;
writeData(pkt, 7);
return checkResponse(opcode);
}
bool WT5001::clearAlarm()
{
char pkt[4];
WT5001_OPCODE_T opcode = CLEAR_ALARM;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
return checkResponse(opcode);
}
bool WT5001::getVolume(uint8_t *vol)
{
char pkt[4];
WT5001_OPCODE_T opcode = READ_VOLUME;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
if (!checkResponse(opcode))
return false;
// there should be a byte waiting for us, the volume
int rv = readData((char *)vol, 1);
if (rv != 1)
return false;
return true;
}
uint8_t WT5001::getVolume()
{
uint8_t vol = 0;
if (!getVolume(&vol))
throw std::runtime_error(std::string(__PRETTY_FUNCTION__) +
": readData() failed");
return vol;
}
bool WT5001::getPlayState(uint8_t *ps)
{
char pkt[4];
WT5001_OPCODE_T opcode = READ_PLAY_STATE;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
if (!checkResponse(opcode))
return false;
// there should be a byte waiting for us, the play state
int rv = readData((char *)ps, 1);
if (rv != 1)
return false;
return true;
}
uint8_t WT5001::getPlayState()
{
uint8_t ps = 0;
if (!getPlayState(&ps))
throw std::runtime_error(std::string(__PRETTY_FUNCTION__) +
": readData() failed");
return ps;
}
bool WT5001::getNumFiles(WT5001_PLAYSOURCE_T psrc, uint16_t *numf)
{
char pkt[4];
WT5001_OPCODE_T opcode = NONE;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
switch (psrc) // src
{
case SD:
opcode = READ_SD_NUMF;
break;
case SPI:
opcode = READ_SPI_NUMF;
break;
case UDISK:
opcode = READ_UDISK_NUMF;
break;
}
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
if (!checkResponse(opcode))
return false;
// read the two byte response, and encode them
char buf[2];
int rv = readData(buf, 2);
if (rv != 2)
return false;
*numf = (buf[0] << 8) | buf[1];
return true;
}
uint16_t WT5001::getNumFiles(WT5001_PLAYSOURCE_T psrc)
{
uint16_t numf = 0;
if (!getNumFiles(psrc, &numf))
throw std::runtime_error(std::string(__PRETTY_FUNCTION__) +
": readData() failed");
return numf;
}
bool WT5001::getCurrentFile(uint16_t *curf)
{
char pkt[4];
WT5001_OPCODE_T opcode = READ_CUR_FNAME;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
if (!checkResponse(opcode))
return false;
// read the two byte response, and encode them
char buf[2];
int rv = readData(buf, 2);
if (rv != 2)
return false;
*curf = (buf[0] << 8) | (buf[1] & 0xff);
return true;
}
uint16_t WT5001::getCurrentFile()
{
uint16_t curf = 0;
if (!getCurrentFile(&curf))
throw std::runtime_error(std::string(__PRETTY_FUNCTION__) +
": readData() failed");
return curf;
}
bool WT5001::getDate(uint16_t *year, uint8_t *month, uint8_t *day)
{
char pkt[4];
WT5001_OPCODE_T opcode = READ_DATE;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
if (!checkResponse(opcode))
return false;
// read the 4 byte response
char buf[4];
int rv = readData(buf, 4);
if (rv != 4)
return false;
*year = (buf[0] << 8) | (buf[1] & 0xff);
*month = buf[2];
*day = buf[3];
return true;
}
bool WT5001::getTime(uint8_t *hour, uint8_t *minute, uint8_t *second)
{
char pkt[4];
WT5001_OPCODE_T opcode = READ_TIME;
pkt[0] = WT5001_START;
pkt[1] = 0x02; // length
pkt[2] = opcode;
pkt[3] = WT5001_END;
writeData(pkt, 4);
if (!checkResponse(opcode))
return false;
// read the 3 byte response
char buf[3];
int rv = readData(buf, 3);
if (rv != 3)
return false;
*hour = buf[0];
*minute = buf[1];
*second = buf[2];
return true;
}