93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung.
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* Copyright (c) 2012 LeafLabs, LLC.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/*
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* STM32F1 implementations for basic GPIO functionality.
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*/
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#include <io.h>
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#include <libmaple/gpio.h>
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#include <libmaple/timer.h>
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#include <boards.h>
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void pinMode(uint8 pin, WiringPinMode mode) {
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gpio_pin_mode outputMode;
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bool pwm = false;
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if (pin >= BOARD_NR_GPIO_PINS) {
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return;
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}
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switch(mode) {
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case OUTPUT:
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outputMode = GPIO_OUTPUT_PP;
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break;
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case OUTPUT_OPEN_DRAIN:
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outputMode = GPIO_OUTPUT_OD;
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break;
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case INPUT:
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case INPUT_FLOATING:
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outputMode = GPIO_INPUT_FLOATING;
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break;
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case INPUT_ANALOG:
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outputMode = GPIO_INPUT_ANALOG;
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break;
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case INPUT_PULLUP:
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outputMode = GPIO_INPUT_PU;
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break;
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case INPUT_PULLDOWN:
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outputMode = GPIO_INPUT_PD;
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break;
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case PWM:
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outputMode = GPIO_AF_OUTPUT_PP;
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pwm = true;
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break;
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case PWM_OPEN_DRAIN:
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outputMode = GPIO_AF_OUTPUT_OD;
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pwm = true;
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break;
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default:
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ASSERT(0);
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return;
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}
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gpio_set_mode(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit, outputMode);
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if (PIN_MAP[pin].timer_device != NULL) {
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if ( pwm ) { // we're switching into PWM, enable timer channels
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timer_set_mode(PIN_MAP[pin].timer_device,
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PIN_MAP[pin].timer_channel,
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TIMER_PWM );
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} else { // disable channel output in non pwm-Mode
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timer_cc_disable(PIN_MAP[pin].timer_device,
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PIN_MAP[pin].timer_channel);
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}
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}
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}
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