Knight KE / Mbed OS Game_Master

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mbed-os/targets/TARGET_Maxim/TARGET_MAX32625/pinmap.c@0:9b3d4731edbb, 2018-06-21 (annotated)

Committer:
WFKnight
Date:
Thu Jun 21 13:51:43 2018 +0000
Revision:
0:9b3d4731edbb
UART, RTOS, LED

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WFKnight 0:9b3d4731edbb 1 /*******************************************************************************
WFKnight 0:9b3d4731edbb 2 * Copyright (c) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
WFKnight 0:9b3d4731edbb 3 *
WFKnight 0:9b3d4731edbb 4 * Permission is hereby granted, free of charge, to any person obtaining a
WFKnight 0:9b3d4731edbb 5 * copy of this software and associated documentation files (the "Software"),
WFKnight 0:9b3d4731edbb 6 * to deal in the Software without restriction, including without limitation
WFKnight 0:9b3d4731edbb 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
WFKnight 0:9b3d4731edbb 8 * and/or sell copies of the Software, and to permit persons to whom the
WFKnight 0:9b3d4731edbb 9 * Software is furnished to do so, subject to the following conditions:
WFKnight 0:9b3d4731edbb 10 *
WFKnight 0:9b3d4731edbb 11 * The above copyright notice and this permission notice shall be included
WFKnight 0:9b3d4731edbb 12 * in all copies or substantial portions of the Software.
WFKnight 0:9b3d4731edbb 13 *
WFKnight 0:9b3d4731edbb 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
WFKnight 0:9b3d4731edbb 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
WFKnight 0:9b3d4731edbb 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
WFKnight 0:9b3d4731edbb 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
WFKnight 0:9b3d4731edbb 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
WFKnight 0:9b3d4731edbb 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
WFKnight 0:9b3d4731edbb 20 * OTHER DEALINGS IN THE SOFTWARE.
WFKnight 0:9b3d4731edbb 21 *
WFKnight 0:9b3d4731edbb 22 * Except as contained in this notice, the name of Maxim Integrated
WFKnight 0:9b3d4731edbb 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
WFKnight 0:9b3d4731edbb 24 * Products, Inc. Branding Policy.
WFKnight 0:9b3d4731edbb 25 *
WFKnight 0:9b3d4731edbb 26 * The mere transfer of this software does not imply any licenses
WFKnight 0:9b3d4731edbb 27 * of trade secrets, proprietary technology, copyrights, patents,
WFKnight 0:9b3d4731edbb 28 * trademarks, maskwork rights, or any other form of intellectual
WFKnight 0:9b3d4731edbb 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
WFKnight 0:9b3d4731edbb 30 * ownership rights.
WFKnight 0:9b3d4731edbb 31 *******************************************************************************
WFKnight 0:9b3d4731edbb 32 */
WFKnight 0:9b3d4731edbb 33
WFKnight 0:9b3d4731edbb 34 #include "mbed_assert.h"
WFKnight 0:9b3d4731edbb 35 #include "pinmap.h"
WFKnight 0:9b3d4731edbb 36 #include "objects.h"
WFKnight 0:9b3d4731edbb 37 #include "gpio_regs.h"
WFKnight 0:9b3d4731edbb 38
WFKnight 0:9b3d4731edbb 39 void pin_function(PinName name, int function)
WFKnight 0:9b3d4731edbb 40 {
WFKnight 0:9b3d4731edbb 41 MBED_ASSERT(name != (PinName)NC);
WFKnight 0:9b3d4731edbb 42
WFKnight 0:9b3d4731edbb 43 if ((function >= 0) && (function <= 0xF)) {
WFKnight 0:9b3d4731edbb 44 unsigned int port = PINNAME_TO_PORT(name);
WFKnight 0:9b3d4731edbb 45 unsigned int pin = PINNAME_TO_PIN(name);
WFKnight 0:9b3d4731edbb 46 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
WFKnight 0:9b3d4731edbb 47 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
WFKnight 0:9b3d4731edbb 48 } else {
WFKnight 0:9b3d4731edbb 49 /* Assume this is a pointer to a pin function object */
WFKnight 0:9b3d4731edbb 50 pin_function_t *obj = (pin_function_t*)function;
WFKnight 0:9b3d4731edbb 51
WFKnight 0:9b3d4731edbb 52 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
WFKnight 0:9b3d4731edbb 53 /* Request pin mapping */
WFKnight 0:9b3d4731edbb 54 *obj->reg_req |= obj->req_val;
WFKnight 0:9b3d4731edbb 55
WFKnight 0:9b3d4731edbb 56 /* Check for acknowledgment */
WFKnight 0:9b3d4731edbb 57 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
WFKnight 0:9b3d4731edbb 58 }
WFKnight 0:9b3d4731edbb 59 }
WFKnight 0:9b3d4731edbb 60 }
WFKnight 0:9b3d4731edbb 61
WFKnight 0:9b3d4731edbb 62 void pin_mode(PinName name, PinMode mode)
WFKnight 0:9b3d4731edbb 63 {
WFKnight 0:9b3d4731edbb 64 MBED_ASSERT(name != (PinName)NC);
WFKnight 0:9b3d4731edbb 65 unsigned int port = PINNAME_TO_PORT(name);
WFKnight 0:9b3d4731edbb 66 unsigned int pin = PINNAME_TO_PIN(name);
WFKnight 0:9b3d4731edbb 67
WFKnight 0:9b3d4731edbb 68 /* Must set mode while retaining direction */
WFKnight 0:9b3d4731edbb 69
WFKnight 0:9b3d4731edbb 70 /* Get the current direction */
WFKnight 0:9b3d4731edbb 71 uint32_t curr_mode = (MXC_GPIO->out_mode[port] >> (pin * 4)) & 0xF;
WFKnight 0:9b3d4731edbb 72 PinDirection direction = PIN_OUTPUT;
WFKnight 0:9b3d4731edbb 73 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) ||
WFKnight 0:9b3d4731edbb 74 (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN) ||
WFKnight 0:9b3d4731edbb 75 (curr_mode == MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z)) {
WFKnight 0:9b3d4731edbb 76 direction = PIN_INPUT;
WFKnight 0:9b3d4731edbb 77 }
WFKnight 0:9b3d4731edbb 78
WFKnight 0:9b3d4731edbb 79 /* Set mode based on current direction */
WFKnight 0:9b3d4731edbb 80 pin_dir_mode(name, direction, mode);
WFKnight 0:9b3d4731edbb 81 }
WFKnight 0:9b3d4731edbb 82