mirror of https://github.com/ARMmbed/mbed-os.git
155 lines
4.9 KiB
C
155 lines
4.9 KiB
C
/* mbed Microcontroller Library
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*******************************************************************************
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* Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved.
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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
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of ARM Limited nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* 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"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* 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
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* 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
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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*/
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#include "mbed_assert.h"
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#include "pinmap.h"
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#include "PortNames.h"
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// GPIO mode look-up table
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// It have to same with PinMode index in "PinNames.h"
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static const uint32_t gpio_pupd[4] = {
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GPIO_NO_PUPD, // PullNone
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GPIO_PuPd_DOWN, // PullDown
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GPIO_PuPd_UP, // PullUp
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GPIO_OD // OpenDrain
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};
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uint32_t Get_GPIO_BaseAddress(uint32_t port_idx)
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{
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uint32_t gpio_add = 0;
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switch(port_idx) {
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case PortA:
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gpio_add = GPIOA_BASE;
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break;
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case PortB:
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gpio_add = GPIOB_BASE;
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break;
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case PortC:
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gpio_add = GPIOC_BASE;
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break;
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case PortD:
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gpio_add = GPIOD_BASE;
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break;
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default:
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error("Pinmap error: wrong port number.");
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break;
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}
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return gpio_add;
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}
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/**
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* Configure pin (input, output, alternate function or analog) + output speed + AF
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*/
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void pin_function(PinName pin, int data) {
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MBED_ASSERT(pin != (PinName)NC);
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// Get the pin informations
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uint32_t mode = WIZ_PIN_MODE(data);
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uint32_t pupd = WIZ_PIN_PUPD(data);
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uint32_t afnum;
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if( mode == WIZ_MODE_AF )
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afnum = WIZ_PIN_AFNUM(data);
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else
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afnum = WIZ_AFNUM(pin);
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uint32_t port_index = WIZ_PORT(pin);
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uint32_t pin_index = WIZ_PIN(pin);
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uint32_t gpio_add = Get_GPIO_BaseAddress(port_index);
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GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
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// Configure Alternate Function
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// Warning: Must be done before the GPIO is initialized
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switch (afnum) {
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case 0:
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HAL_PAD_AFConfig(port_index,(uint32_t)(1 << pin_index),Px_AFSR_AF0);
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break;
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case 1:
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HAL_PAD_AFConfig(port_index,(uint32_t)(1 << pin_index),Px_AFSR_AF1);
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break;
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case 2:
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HAL_PAD_AFConfig(port_index,(uint32_t)(1 << pin_index),Px_AFSR_AF2);
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break;
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case 3:
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HAL_PAD_AFConfig(port_index,(uint32_t)(1 << pin_index),Px_AFSR_AF3);
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break;
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default:
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break;
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}
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if(mode == WIZ_MODE_AF)
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return;
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// Configure GPIO
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = (uint32_t)(1 << pin_index);
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GPIO_InitStructure.GPIO_Mode = mode;
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GPIO_InitStructure.GPIO_Pad = gpio_pupd[pupd];
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HAL_GPIO_Init(gpio, &GPIO_InitStructure);
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}
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/**
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* Configure pin pull-up/pull-down
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*/
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void pin_mode(PinName pin, PinMode pupd)
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{
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MBED_ASSERT(pin != (PinName)NC);
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P_Port_Def *px_pcr;
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uint32_t port_index = WIZ_PORT(pin);
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switch(port_index) {
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case PortA:
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px_pcr = PA_PCR;
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break;
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case PortB:
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px_pcr = PB_PCR;
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break;
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case PortC:
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px_pcr = PC_PCR;
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break;
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case PortD:
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px_pcr = (P_Port_Def*)PD_PCR;
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break;
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default:
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error("Pinmap error: wrong port number.");
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return;
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}
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px_pcr->Port[port_index] &= ~(Px_PCR_PUPD_DOWN|Px_PCR_PUPD_UP|Px_PCR_DS_HIGH| \
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Px_PCR_OD | Px_PCR_IE | Px_PCR_CS_SUMMIT);
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px_pcr->Port[port_index] |= gpio_pupd[pupd];
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}
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