Amit Gandhi / mbed-dev

test

Fork of mbed-dev by mbed official

targets/TARGET_Maxim/TARGET_MAX32625/pinmap.c@178:d650f5d4c87a, 2017-11-08 (annotated)

Committer:
AnnaBridge
Date:
Wed Nov 08 13:50:44 2017 +0000
Revision:
178:d650f5d4c87a
Parent:
150:02e0a0aed4ec 
This updates the lib to the mbed lib v 155

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 150:02e0a0aed4ec 1 /*******************************************************************************
<> 150:02e0a0aed4ec 2 * Copyright (c) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
<> 150:02e0a0aed4ec 3 *
<> 150:02e0a0aed4ec 4 * Permission is hereby granted, free of charge, to any person obtaining a
<> 150:02e0a0aed4ec 5 * copy of this software and associated documentation files (the "Software"),
<> 150:02e0a0aed4ec 6 * to deal in the Software without restriction, including without limitation
<> 150:02e0a0aed4ec 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
<> 150:02e0a0aed4ec 8 * and/or sell copies of the Software, and to permit persons to whom the
<> 150:02e0a0aed4ec 9 * Software is furnished to do so, subject to the following conditions:
<> 150:02e0a0aed4ec 10 *
<> 150:02e0a0aed4ec 11 * The above copyright notice and this permission notice shall be included
<> 150:02e0a0aed4ec 12 * in all copies or substantial portions of the Software.
<> 150:02e0a0aed4ec 13 *
<> 150:02e0a0aed4ec 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
<> 150:02e0a0aed4ec 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
<> 150:02e0a0aed4ec 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
<> 150:02e0a0aed4ec 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
<> 150:02e0a0aed4ec 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
<> 150:02e0a0aed4ec 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
<> 150:02e0a0aed4ec 20 * OTHER DEALINGS IN THE SOFTWARE.
<> 150:02e0a0aed4ec 21 *
<> 150:02e0a0aed4ec 22 * Except as contained in this notice, the name of Maxim Integrated
<> 150:02e0a0aed4ec 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
<> 150:02e0a0aed4ec 24 * Products, Inc. Branding Policy.
<> 150:02e0a0aed4ec 25 *
<> 150:02e0a0aed4ec 26 * The mere transfer of this software does not imply any licenses
<> 150:02e0a0aed4ec 27 * of trade secrets, proprietary technology, copyrights, patents,
<> 150:02e0a0aed4ec 28 * trademarks, maskwork rights, or any other form of intellectual
<> 150:02e0a0aed4ec 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
<> 150:02e0a0aed4ec 30 * ownership rights.
<> 150:02e0a0aed4ec 31 *******************************************************************************
<> 150:02e0a0aed4ec 32 */
<> 150:02e0a0aed4ec 33
<> 150:02e0a0aed4ec 34 #include "mbed_assert.h"
<> 150:02e0a0aed4ec 35 #include "pinmap.h"
<> 150:02e0a0aed4ec 36 #include "objects.h"
<> 150:02e0a0aed4ec 37 #include "gpio_regs.h"
<> 150:02e0a0aed4ec 38
<> 150:02e0a0aed4ec 39 void pin_function(PinName name, int function)
<> 150:02e0a0aed4ec 40 {
<> 150:02e0a0aed4ec 41 MBED_ASSERT(name != (PinName)NC);
<> 150:02e0a0aed4ec 42
<> 150:02e0a0aed4ec 43 if ((function >= 0) && (function <= 0xF)) {
<> 150:02e0a0aed4ec 44 unsigned int port = PINNAME_TO_PORT(name);
<> 150:02e0a0aed4ec 45 unsigned int pin = PINNAME_TO_PIN(name);
<> 150:02e0a0aed4ec 46 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
<> 150:02e0a0aed4ec 47 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
<> 150:02e0a0aed4ec 48 } else {
<> 150:02e0a0aed4ec 49 /* Assume this is a pointer to a pin function object */
<> 150:02e0a0aed4ec 50 pin_function_t *obj = (pin_function_t*)function;
<> 150:02e0a0aed4ec 51
<> 150:02e0a0aed4ec 52 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
<> 150:02e0a0aed4ec 53 /* Request pin mapping */
<> 150:02e0a0aed4ec 54 *obj->reg_req |= obj->req_val;
<> 150:02e0a0aed4ec 55
<> 150:02e0a0aed4ec 56 /* Check for acknowledgment */
<> 150:02e0a0aed4ec 57 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
<> 150:02e0a0aed4ec 58 }
<> 150:02e0a0aed4ec 59 }
<> 150:02e0a0aed4ec 60 }
<> 150:02e0a0aed4ec 61
<> 150:02e0a0aed4ec 62 void pin_mode(PinName name, PinMode mode)
<> 150:02e0a0aed4ec 63 {
<> 150:02e0a0aed4ec 64 MBED_ASSERT(name != (PinName)NC);
<> 150:02e0a0aed4ec 65 unsigned int port = PINNAME_TO_PORT(name);
<> 150:02e0a0aed4ec 66 unsigned int pin = PINNAME_TO_PIN(name);
<> 150:02e0a0aed4ec 67
<> 150:02e0a0aed4ec 68 /* Must set mode while retaining direction */
<> 150:02e0a0aed4ec 69
<> 150:02e0a0aed4ec 70 /* Get the current direction */
<> 150:02e0a0aed4ec 71 uint32_t curr_mode = (MXC_GPIO->out_mode[port] >> (pin * 4)) & 0xF;
<> 150:02e0a0aed4ec 72 PinDirection direction = PIN_OUTPUT;
<> 150:02e0a0aed4ec 73 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) ||
<> 150:02e0a0aed4ec 74 (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN) ||
<> 150:02e0a0aed4ec 75 (curr_mode == MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z)) {
<> 150:02e0a0aed4ec 76 direction = PIN_INPUT;
<> 150:02e0a0aed4ec 77 }
<> 150:02e0a0aed4ec 78
<> 150:02e0a0aed4ec 79 /* Set mode based on current direction */
<> 150:02e0a0aed4ec 80 pin_dir_mode(name, direction, mode);
<> 150:02e0a0aed4ec 81 }
<> 150:02e0a0aed4ec 82