102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*
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ChibiOS/GFX - Copyright (C) 2012, 2013
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Joel Bodenmann aka Tectu <joel@unormal.org>
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This file is part of ChibiOS/GFX.
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ChibiOS/GFX is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/GFX 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file drivers/ginput/dial/GADC/ginput_lld_dial.c
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* @brief GINPUT Dial low level driver source for GADC hardware.
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*
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* @defgroup Dial Dial
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* @ingroup GINPUT
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* @{
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*/
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#include "ch.h"
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#include "hal.h"
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#include "gfx.h"
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#if GFX_USE_GINPUT && GINPUT_NEED_DIAL
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#include "ginput/lld/dial.h"
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#if GINPUT_DIAL_NUM_PORTS >= 5
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#error "GINPUT: Dial - GADC driver currently only supports 4 devices"
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#endif
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static adcsample_t samplebuf[GINPUT_DIAL_NUM_PORTS];
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#if GINPUT_DIAL_CYCLE_POLL
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static uint16_t cycle;
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#endif
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static void GADCCallback(adcsample_t *buffer, void *param) {
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((DialCallbackFn)param)(buffer-samplebuf, buffer[0]);
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}
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void ginput_lld_dial_init(void) {
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#if GINPUT_DIAL_CYCLE_POLL
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cycle = 0;
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#endif
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}
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void ginput_lld_dial_poll(DialCallbackFn fn) {
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#if GINPUT_DIAL_CYCLE_POLL
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switch(cycle++) {
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#if GINPUT_DIAL_NUM_PORTS >= 1
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case 0:
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE0, samplebuf+0, GADCCallback, (void *)fn);
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break;
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#endif
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#if GINPUT_DIAL_NUM_PORTS >= 2
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case 1:
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE1, samplebuf+1, GADCCallback, (void *)fn);
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break;
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#endif
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#if GINPUT_DIAL_NUM_PORTS >= 3
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case 2:
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE2, samplebuf+2, GADCCallback, (void *)fn);
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break;
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#endif
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#if GINPUT_DIAL_NUM_PORTS >= 4
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case 3:
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE3, samplebuf+3, GADCCallback, (void *)fn);
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break;
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#endif
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}
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if (cycle >= GINPUT_DIAL_NUM_PORTS)
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cycle = 0;
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#else
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#if GINPUT_DIAL_NUM_PORTS >= 1
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE0, samplebuf+0, GADCCallback, (void *)fn);
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#endif
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#if GINPUT_DIAL_NUM_PORTS >= 2
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE1, samplebuf+1, GADCCallback, (void *)fn);
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#endif
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#if GINPUT_DIAL_NUM_PORTS >= 3
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE2, samplebuf+2, GADCCallback, (void *)fn);
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#endif
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#if GINPUT_DIAL_NUM_PORTS >= 4
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gadcLowSpeedStart(GINPUT_DIAL_DEVICE3, samplebuf+3, GADCCallback, (void *)fn);
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#endif
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#endif
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}
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#endif /* GFX_USE_GINPUT && GINPUT_NEED_DIAL */
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/** @} */
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