mirror of https://github.com/ARMmbed/mbed-os.git
97 lines
3.5 KiB
C
97 lines
3.5 KiB
C
/*******************************************************************************
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* Copyright (c) Maxim Integrated Products, Inc., All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is 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 included
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* 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, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*******************************************************************************
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*/
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#include "mbed_assert.h"
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#include "pinmap.h"
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#include "objects.h"
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#include "gpio_regs.h"
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void pin_function(PinName name, int function)
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{
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MBED_ASSERT(name != (PinName)NC);
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if ((function >= 0) && (function <= 0xF)) {
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// Set GPIO Function
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unsigned int pin_val = (1 << PINNAME_TO_PIN(name));
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switch (function) {
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case 0: // GPIO_FUNC_IN
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MXC_GPIO0->en0 |= pin_val;
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MXC_GPIO0->en1 &= ~pin_val;
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break;
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case 1: // GPIO_FUNC_OUT
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MXC_GPIO0->en0 |= pin_val;
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MXC_GPIO0->en1 &= ~pin_val;
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MXC_GPIO0->out_en |= pin_val;
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break;
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case 2: // GPIO_FUNC_ALT1
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MXC_GPIO0->en0 &= ~pin_val;
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MXC_GPIO0->en1 &= ~pin_val;
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break;
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case 3: // GPIO_FUNC_ALT2
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MXC_GPIO0->en0 &= ~pin_val;
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MXC_GPIO0->en1 |= pin_val;
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break;
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case 4: // GPIO_FUNC_ALT3
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MXC_GPIO0->en0 |= pin_val;
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MXC_GPIO0->en1 |= pin_val;
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break;
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default:
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break;
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}
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}
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}
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void pin_mode(PinName name, PinMode mode)
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{
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MBED_ASSERT(name != (PinName)NC);
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unsigned int pin_val = (1 << PINNAME_TO_PIN(name));
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switch (mode) {
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case PullUp:
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MXC_GPIO0->pad_cfg1 |= pin_val;
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MXC_GPIO0->ps |= pin_val;
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break;
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case PullDown:
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MXC_GPIO0->pad_cfg1 |= pin_val;
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MXC_GPIO0->ps &= ~pin_val;
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break;
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case PullNone:
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MXC_GPIO0->pad_cfg1 &= ~pin_val;
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MXC_GPIO0->ps &= ~pin_val;
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break;
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default:
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break;
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}
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}
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