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Arduino/hardware/arduino/avr/libraries/Bridge/Mailbox.cpp
2013-06-26 22:12:09 +02:00

57 lines
1.8 KiB
C++

/*
Copyright (c) 2013 Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <Mailbox.h>
unsigned int MailboxClass::readMessage(uint8_t *buff, unsigned int size) {
uint8_t tmp[] = { 'm' };
return bridge.transfer(tmp, 1, buff, size);
}
void MailboxClass::readMessage(String &str, unsigned int maxLength) {
uint8_t tmp[] = { 'm' };
// XXX: Is there a better way to create the string?
uint8_t buff[maxLength+1];
int l = bridge.transfer(tmp, 1, buff, maxLength);
buff[l] = 0;
str = (const char *)buff;
}
void MailboxClass::writeMessage(const uint8_t *buff, unsigned int size) {
uint8_t cmd[] = {'M'};
bridge.transfer(cmd, 1, buff, size, NULL, 0);
}
void MailboxClass::writeMessage(const String& str) {
writeMessage((uint8_t*) str.c_str(), str.length());
}
void MailboxClass::writeJSON(const String& str) {
uint8_t cmd[] = {'J'};
bridge.transfer(cmd, 1, (uint8_t*) str.c_str(), str.length(), NULL, 0);
}
unsigned int MailboxClass::messageAvailable() {
uint8_t tmp[] = {'n'};
uint8_t res[2];
bridge.transfer(tmp, 1, res, 2);
return (res[0] << 8) + res[1];
}
MailboxClass Mailbox(Bridge);