/******************************************************************************* * Copyright (c) Maxim Integrated Products, Inc., All Rights Reserved. * * 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 MAXIM INTEGRATED 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. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. ******************************************************************************* */ #include "mbed_assert.h" #include "pinmap.h" #include "objects.h" #include "gpio_regs.h" void pin_function(PinName name, int function) { MBED_ASSERT(name != (PinName)NC); if ((function >= 0) && (function <= 0xF)) { // Set GPIO Function unsigned int pin_val = (1 << PINNAME_TO_PIN(name)); switch (function) { case 0: // GPIO_FUNC_IN MXC_GPIO0->en0 |= pin_val; MXC_GPIO0->en1 &= ~pin_val; break; case 1: // GPIO_FUNC_OUT MXC_GPIO0->en0 |= pin_val; MXC_GPIO0->en1 &= ~pin_val; MXC_GPIO0->out_en |= pin_val; break; case 2: // GPIO_FUNC_ALT1 MXC_GPIO0->en0 &= ~pin_val; MXC_GPIO0->en1 &= ~pin_val; break; case 3: // GPIO_FUNC_ALT2 MXC_GPIO0->en0 &= ~pin_val; MXC_GPIO0->en1 |= pin_val; break; case 4: // GPIO_FUNC_ALT3 MXC_GPIO0->en0 |= pin_val; MXC_GPIO0->en1 |= pin_val; break; default: break; } } } void pin_mode(PinName name, PinMode mode) { MBED_ASSERT(name != (PinName)NC); unsigned int pin_val = (1 << PINNAME_TO_PIN(name)); switch (mode) { case PullUp: MXC_GPIO0->pad_cfg1 |= pin_val; MXC_GPIO0->ps |= pin_val; break; case PullDown: MXC_GPIO0->pad_cfg1 |= pin_val; MXC_GPIO0->ps &= ~pin_val; break; case PullNone: MXC_GPIO0->pad_cfg1 &= ~pin_val; MXC_GPIO0->ps &= ~pin_val; break; default: break; } }