Mateusz Kowalik / Application

USB Serial application

Fork of USBSerial_HelloWorld by Samuel Mokrani

mbed-dev/targets/TARGET_Maxim/TARGET_MAX32625/pinmap.c@11:b3f2a8bdac4d, 2017-12-16 (annotated)

Committer:
Zaitsev
Date:
Sat Dec 16 10:26:48 2017 +0000
Revision:
11:b3f2a8bdac4d
Parent:
10:41552d038a69 
A copy for D.S;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Zaitsev 10:41552d038a69 1 /*******************************************************************************
Zaitsev 10:41552d038a69 2 * Copyright (c) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
Zaitsev 10:41552d038a69 3 *
Zaitsev 10:41552d038a69 4 * Permission is hereby granted, free of charge, to any person obtaining a
Zaitsev 10:41552d038a69 5 * copy of this software and associated documentation files (the "Software"),
Zaitsev 10:41552d038a69 6 * to deal in the Software without restriction, including without limitation
Zaitsev 10:41552d038a69 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
Zaitsev 10:41552d038a69 8 * and/or sell copies of the Software, and to permit persons to whom the
Zaitsev 10:41552d038a69 9 * Software is furnished to do so, subject to the following conditions:
Zaitsev 10:41552d038a69 10 *
Zaitsev 10:41552d038a69 11 * The above copyright notice and this permission notice shall be included
Zaitsev 10:41552d038a69 12 * in all copies or substantial portions of the Software.
Zaitsev 10:41552d038a69 13 *
Zaitsev 10:41552d038a69 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
Zaitsev 10:41552d038a69 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Zaitsev 10:41552d038a69 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
Zaitsev 10:41552d038a69 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
Zaitsev 10:41552d038a69 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
Zaitsev 10:41552d038a69 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
Zaitsev 10:41552d038a69 20 * OTHER DEALINGS IN THE SOFTWARE.
Zaitsev 10:41552d038a69 21 *
Zaitsev 10:41552d038a69 22 * Except as contained in this notice, the name of Maxim Integrated
Zaitsev 10:41552d038a69 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
Zaitsev 10:41552d038a69 24 * Products, Inc. Branding Policy.
Zaitsev 10:41552d038a69 25 *
Zaitsev 10:41552d038a69 26 * The mere transfer of this software does not imply any licenses
Zaitsev 10:41552d038a69 27 * of trade secrets, proprietary technology, copyrights, patents,
Zaitsev 10:41552d038a69 28 * trademarks, maskwork rights, or any other form of intellectual
Zaitsev 10:41552d038a69 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
Zaitsev 10:41552d038a69 30 * ownership rights.
Zaitsev 10:41552d038a69 31 *******************************************************************************
Zaitsev 10:41552d038a69 32 */
Zaitsev 10:41552d038a69 33
Zaitsev 10:41552d038a69 34 #include "mbed_assert.h"
Zaitsev 10:41552d038a69 35 #include "pinmap.h"
Zaitsev 10:41552d038a69 36 #include "objects.h"
Zaitsev 10:41552d038a69 37 #include "gpio_regs.h"
Zaitsev 10:41552d038a69 38
Zaitsev 10:41552d038a69 39 void pin_function(PinName name, int function)
Zaitsev 10:41552d038a69 40 {
Zaitsev 10:41552d038a69 41 MBED_ASSERT(name != (PinName)NC);
Zaitsev 10:41552d038a69 42
Zaitsev 10:41552d038a69 43 if ((function >= 0) && (function <= 0xF)) {
Zaitsev 10:41552d038a69 44 unsigned int port = PINNAME_TO_PORT(name);
Zaitsev 10:41552d038a69 45 unsigned int pin = PINNAME_TO_PIN(name);
Zaitsev 10:41552d038a69 46 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
Zaitsev 10:41552d038a69 47 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
Zaitsev 10:41552d038a69 48 } else {
Zaitsev 10:41552d038a69 49 /* Assume this is a pointer to a pin function object */
Zaitsev 10:41552d038a69 50 pin_function_t *obj = (pin_function_t*)function;
Zaitsev 10:41552d038a69 51
Zaitsev 10:41552d038a69 52 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
Zaitsev 10:41552d038a69 53 /* Request pin mapping */
Zaitsev 10:41552d038a69 54 *obj->reg_req |= obj->req_val;
Zaitsev 10:41552d038a69 55
Zaitsev 10:41552d038a69 56 /* Check for acknowledgment */
Zaitsev 10:41552d038a69 57 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
Zaitsev 10:41552d038a69 58 }
Zaitsev 10:41552d038a69 59 }
Zaitsev 10:41552d038a69 60 }
Zaitsev 10:41552d038a69 61
Zaitsev 10:41552d038a69 62 void pin_mode(PinName name, PinMode mode)
Zaitsev 10:41552d038a69 63 {
Zaitsev 10:41552d038a69 64 MBED_ASSERT(name != (PinName)NC);
Zaitsev 10:41552d038a69 65 unsigned int port = PINNAME_TO_PORT(name);
Zaitsev 10:41552d038a69 66 unsigned int pin = PINNAME_TO_PIN(name);
Zaitsev 10:41552d038a69 67
Zaitsev 10:41552d038a69 68 /* Must set mode while retaining direction */
Zaitsev 10:41552d038a69 69
Zaitsev 10:41552d038a69 70 /* Get the current direction */
Zaitsev 10:41552d038a69 71 uint32_t curr_mode = (MXC_GPIO->out_mode[port] >> (pin * 4)) & 0xF;
Zaitsev 10:41552d038a69 72 PinDirection direction = PIN_OUTPUT;
Zaitsev 10:41552d038a69 73 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) ||
Zaitsev 10:41552d038a69 74 (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN) ||
Zaitsev 10:41552d038a69 75 (curr_mode == MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z)) {
Zaitsev 10:41552d038a69 76 direction = PIN_INPUT;
Zaitsev 10:41552d038a69 77 }
Zaitsev 10:41552d038a69 78
Zaitsev 10:41552d038a69 79 /* Set mode based on current direction */
Zaitsev 10:41552d038a69 80 pin_dir_mode(name, direction, mode);
Zaitsev 10:41552d038a69 81 }
Zaitsev 10:41552d038a69 82