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146 lines
3.2 KiB
C++
146 lines
3.2 KiB
C++
/*
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Copyright (c) 2013 Arduino LLC. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <YunServer.h>
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YunServer::YunServer(uint16_t _p, BridgeClass &_b) :
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bridge(_b), port(_p), listening(false) {
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}
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void YunServer::begin() {
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uint8_t tmp[] = {
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'N',
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(port >> 8) & 0xFF,
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port & 0xFF
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};
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uint8_t res[1];
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bridge.transfer(tmp, 3, (const uint8_t *)"0.0.0.0", 7, res, 1);
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listening = (res[0] == 1);
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}
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YunClient YunServer::accept() {
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uint8_t cmd[] = {'k'};
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uint8_t res[1];
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unsigned int l = bridge.transfer(cmd, 1, res, 1);
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if (l==0)
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return YunClient();
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return YunClient(res[0]);
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}
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YunClient::YunClient(int _h, BridgeClass &_b) :
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bridge(_b), handle(_h), opened(true), buffered(0) {
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}
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YunClient::YunClient(BridgeClass &_b) :
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bridge(_b), handle(0), opened(false), buffered(0) {
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}
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YunClient::~YunClient() {
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}
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YunClient& YunClient::operator=(const YunClient &_x) {
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opened = _x.opened;
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handle = _x.handle;
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return *this;
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}
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void YunClient::stop() {
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if (opened) {
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uint8_t cmd[] = {'j', handle};
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bridge.transfer(cmd, 2);
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}
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opened = false;
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}
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void YunClient::doBuffer() {
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// If there are already char in buffer exit
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if (buffered > 0)
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return;
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// Try to buffer up to 32 characters
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readPos = 0;
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uint8_t cmd[] = {'K', handle, sizeof(buffer)};
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buffered = bridge.transfer(cmd, 3, buffer, sizeof(buffer));
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}
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int YunClient::available() {
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// Look if there is new data available
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doBuffer();
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return buffered;
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}
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int YunClient::read() {
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doBuffer();
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if (buffered == 0)
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return -1; // no chars available
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else {
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buffered--;
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return buffer[readPos++];
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}
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}
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int YunClient::read(uint8_t *buff, size_t size) {
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int readed = 0;
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do {
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if (buffered == 0) {
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doBuffer();
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if (buffered == 0)
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return readed;
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}
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buff[readed++] = buffer[readPos++];
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buffered--;
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} while (readed < size);
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return readed;
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}
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int YunClient::peek() {
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doBuffer();
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if (buffered == 0)
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return -1; // no chars available
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else
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return buffer[readPos];
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}
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size_t YunClient::write(uint8_t c) {
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if (!opened)
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return 0;
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uint8_t cmd[] = {'l', handle, c};
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bridge.transfer(cmd, 3);
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return 1;
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}
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size_t YunClient::write(const uint8_t *buf, size_t size) {
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if (!opened)
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return 0;
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uint8_t cmd[] = {'l', handle};
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bridge.transfer(cmd, 2, buf, size, NULL, 0);
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return size;
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}
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void YunClient::flush() {
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}
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uint8_t YunClient::connected() {
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if (!opened)
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return false;
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uint8_t cmd[] = {'L', handle};
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uint8_t res[1];
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bridge.transfer(cmd, 2, res, 1);
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return (res[0] == 1);
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}
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