mirror of https://github.com/ARMmbed/mbed-os.git
99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*******************************************************************************
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* Copyright (C) 2017 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 "port_api.h"
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#include "pinmap.h"
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#include "gpio_api.h"
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#include "gpio_regs.h"
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#include "clkman_regs.h"
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PinName port_pin(PortName port, int pin_n)
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{
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return (PinName)((port << PORT_SHIFT) | pin_n);
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}
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void port_init(port_t *obj, PortName port, int mask, PinDirection direction)
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{
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obj->port = port;
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obj->mask = mask;
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obj->reg_out = &MXC_GPIO->out_val[port];
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obj->reg_in = &MXC_GPIO->in_val[port];
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obj->mode = PullDefault;
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/* Ensure that the GPIO clock is enabled */
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MXC_CLKMAN->sys_clk_ctrl_6_gpio = MXC_S_CLKMAN_CLK_SCALE_DIV_1;
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uint32_t i;
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// The function is set per pin: reuse gpio logic
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for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
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if (obj->mask & (1 << i)) {
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gpio_set(port_pin(obj->port, i));
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pin_dir_mode(port_pin(obj->port, i), direction, obj->mode);
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}
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}
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}
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void port_mode(port_t *obj, PinMode mode)
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{
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uint32_t i;
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obj->mode = mode;
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// The mode is set per pin: reuse pinmap logic
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for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
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if (obj->mask & (1 << i)) {
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pin_mode(port_pin(obj->port, i), mode);
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}
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}
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}
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void port_dir(port_t *obj, PinDirection direction)
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{
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uint32_t i;
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// The mode is set per pin: reuse gpio logic
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for (i = 0; i < MXC_GPIO_MAX_PINS_PER_PORT; i++) {
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if (obj->mask & (1 << i)) {
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pin_dir_mode(port_pin(obj->port, i), direction, obj->mode);
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}
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}
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}
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void port_write(port_t *obj, int value)
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{
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*obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
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}
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int port_read(port_t *obj)
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{
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return (*obj->reg_in & obj->mask);
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}
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