106 lines
5.0 KiB
C
106 lines
5.0 KiB
C
/**
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* @file xmc4_gpio.c
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* @date 2015-06-20
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*
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* @cond
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*********************************************************************************************************************
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* XMClib v2.1.12 - XMC Peripheral Driver Library
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*
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* Copyright (c) 2015-2017, Infineon Technologies AG
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,are permitted provided that the
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* following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided with the distribution.
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*
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* Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* To improve the quality of the software, users are encouraged to share modifications, enhancements or bug fixes with
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* Infineon Technologies AG dave@infineon.com).
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*********************************************************************************************************************
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*
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* Change History
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* --------------
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*
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* 2015-02-20:
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* - Initial draft <br>
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*
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* 2015-06-20:
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* - Removed version macros and declaration of GetDriverVersion API
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*
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* @endcond
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*
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*/
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#include "xmc_gpio.h"
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#if UC_FAMILY == XMC4
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/*******************************************************************************
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* MACROS
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*******************************************************************************/
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#define PORT_PDR_Msk PORT0_PDR0_PD0_Msk
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#define PORT_PDR_Size (4U)
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#define PORT_HWSEL_Msk PORT0_HWSEL_HW0_Msk
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/*******************************************************************************
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* API IMPLEMENTATION
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*******************************************************************************/
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void XMC_GPIO_Init(XMC_GPIO_PORT_t *const port, const uint8_t pin, const XMC_GPIO_CONFIG_t *const config)
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{
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XMC_ASSERT("XMC_GPIO_Init: Invalid port", XMC_GPIO_CHECK_PORT(port));
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XMC_ASSERT("XMC_GPIO_Init: Invalid mode", XMC_GPIO_IsModeValid(config->mode));
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/* Switch to input */
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port->IOCR[pin >> 2U] &= (uint32_t)~(PORT_IOCR_PC_Msk << (PORT_IOCR_PC_Size * (pin & 0x3U)));
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/* HW port control is disabled */
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port->HWSEL &= ~(uint32_t)((uint32_t)PORT_HWSEL_Msk << ((uint32_t)pin << 1U));
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/* Enable digital input */
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if (XMC_GPIO_CHECK_ANALOG_PORT(port))
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{
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port->PDISC &= ~(uint32_t)((uint32_t)0x1U << pin);
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}
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else
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{
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/* Set output level */
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port->OMR = (uint32_t)config->output_level << pin;
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/* Set output driver strength */
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port->PDR[pin >> 3U] &= (uint32_t)~(PORT_PDR_Msk << ((uint32_t)PORT_PDR_Size * ((uint32_t)pin & 0x7U)));
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port->PDR[pin >> 3U] |= (uint32_t)config->output_strength << ((uint32_t)PORT_PDR_Size * ((uint32_t)pin & 0x7U));
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}
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/* Set mode */
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port->IOCR[pin >> 2U] |= (uint32_t)config->mode << ((uint32_t)PORT_IOCR_PC_Size * ((uint32_t)pin & 0x3U));
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}
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void XMC_GPIO_SetOutputStrength(XMC_GPIO_PORT_t *const port, const uint8_t pin, XMC_GPIO_OUTPUT_STRENGTH_t strength)
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{
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XMC_ASSERT("XMC_GPIO_Init: Invalid port", XMC_GPIO_CHECK_OUTPUT_PORT(port));
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XMC_ASSERT("XMC_GPIO_Init: Invalid output strength", XMC_GPIO_CHECK_OUTPUT_STRENGTH(strength));
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port->PDR[pin >> 3U] &= (uint32_t)~((uint32_t)PORT_PDR_Msk << ((uint32_t)PORT_PDR_Size * ((uint32_t)pin & 0x7U)));
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port->PDR[pin >> 3U] |= (uint32_t)strength << ((uint32_t)PORT_PDR_Size * ((uint32_t)pin & 0x7U));
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}
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#endif /* UC_FAMILY == XMC4 */
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