From c8da1c3b7b6eb450138a00af9bbbee607f596837 Mon Sep 17 00:00:00 2001 From: Marti Bolivar Date: Mon, 7 Mar 2011 13:11:54 -0500 Subject: [WIP] GPIO refactor: seems ok, ready for review --- wirish/wirish_analog.cpp | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 wirish/wirish_analog.cpp (limited to 'wirish/wirish_analog.cpp') diff --git a/wirish/wirish_analog.cpp b/wirish/wirish_analog.cpp new file mode 100644 index 0000000..a658184 --- /dev/null +++ b/wirish/wirish_analog.cpp @@ -0,0 +1,41 @@ +/****************************************************************************** + * The MIT License + * + * Copyright (c) 2010 Perry Hung. + * + * 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. + *****************************************************************************/ + +/** + * @brief Arduino-compatible ADC implementation. + */ + +#include "libmaple.h" +#include "wirish.h" +#include "io.h" + +/* Assumes that the ADC has been initialized and that the pin is set + * to ANALOG_INPUT */ +uint32 analogRead(uint8 pin) { + if(PIN_MAP[pin].adc_channel == ADC_INVALID) { + return 0; + } + + return adc_read(ADC1, PIN_MAP[pin].adc_channel); +} -- cgit v1.2.3