/* * gertboard.h: * Access routines for the SPI devices on the Gertboard * Copyright (c) 2012 Gordon Henderson * * The Gertboard has an MCP4802 dual-channel D to A convertor * connected to the SPI bus, selected via chip-select B. * *********************************************************************** * This file is part of wiringPi: * https://projects.drogon.net/raspberry-pi/wiringpi/ * * wiringPi 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 3 of the * License, or (at your option) any later version. * * wiringPi 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 wiringPi. * If not, see . *********************************************************************** */ #ifdef __cplusplus extern "C" { #endif // Old routines extern void gertboardAnalogWrite (const int chan, const int value) ; extern int gertboardAnalogRead (const int chan) ; extern int gertboardSPISetup (void) ; // New extern int gertboardAnalogSetup (const int pinBase) ; #ifdef __cplusplus } #endif