mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_Maxim/TARGET_MAX32630/pinmap.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
157:ff67d9f36b67 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 157:ff67d9f36b67 1 /*******************************************************************************
<> 157:ff67d9f36b67 2 * Copyright (c) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
<> 157:ff67d9f36b67 3 *
<> 157:ff67d9f36b67 4 * Permission is hereby granted, free of charge, to any person obtaining a
<> 157:ff67d9f36b67 5 * copy of this software and associated documentation files (the "Software"),
<> 157:ff67d9f36b67 6 * to deal in the Software without restriction, including without limitation
<> 157:ff67d9f36b67 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
<> 157:ff67d9f36b67 8 * and/or sell copies of the Software, and to permit persons to whom the
<> 157:ff67d9f36b67 9 * Software is furnished to do so, subject to the following conditions:
<> 157:ff67d9f36b67 10 *
<> 157:ff67d9f36b67 11 * The above copyright notice and this permission notice shall be included
<> 157:ff67d9f36b67 12 * in all copies or substantial portions of the Software.
<> 157:ff67d9f36b67 13 *
<> 157:ff67d9f36b67 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
<> 157:ff67d9f36b67 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
<> 157:ff67d9f36b67 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
<> 157:ff67d9f36b67 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
<> 157:ff67d9f36b67 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
<> 157:ff67d9f36b67 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
<> 157:ff67d9f36b67 20 * OTHER DEALINGS IN THE SOFTWARE.
<> 157:ff67d9f36b67 21 *
<> 157:ff67d9f36b67 22 * Except as contained in this notice, the name of Maxim Integrated
<> 157:ff67d9f36b67 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
<> 157:ff67d9f36b67 24 * Products, Inc. Branding Policy.
<> 157:ff67d9f36b67 25 *
<> 157:ff67d9f36b67 26 * The mere transfer of this software does not imply any licenses
<> 157:ff67d9f36b67 27 * of trade secrets, proprietary technology, copyrights, patents,
<> 157:ff67d9f36b67 28 * trademarks, maskwork rights, or any other form of intellectual
<> 157:ff67d9f36b67 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
<> 157:ff67d9f36b67 30 * ownership rights.
<> 157:ff67d9f36b67 31 *******************************************************************************
<> 157:ff67d9f36b67 32 */
<> 157:ff67d9f36b67 33
<> 157:ff67d9f36b67 34 #include "mbed_assert.h"
<> 157:ff67d9f36b67 35 #include "pinmap.h"
<> 157:ff67d9f36b67 36 #include "objects.h"
<> 157:ff67d9f36b67 37 #include "gpio_regs.h"
<> 157:ff67d9f36b67 38
<> 157:ff67d9f36b67 39 void pin_function(PinName name, int function)
<> 157:ff67d9f36b67 40 {
<> 157:ff67d9f36b67 41 MBED_ASSERT(name != (PinName)NC);
<> 157:ff67d9f36b67 42
<> 157:ff67d9f36b67 43 if ((function >= 0) && (function <= 0xF)) {
<> 157:ff67d9f36b67 44 unsigned int port = PINNAME_TO_PORT(name);
<> 157:ff67d9f36b67 45 unsigned int pin = PINNAME_TO_PIN(name);
<> 157:ff67d9f36b67 46 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
<> 157:ff67d9f36b67 47 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
<> 157:ff67d9f36b67 48 } else {
<> 157:ff67d9f36b67 49 /* Assume this is a pointer to a pin function object */
<> 157:ff67d9f36b67 50 pin_function_t *obj = (pin_function_t*)function;
<> 157:ff67d9f36b67 51
<> 157:ff67d9f36b67 52 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
<> 157:ff67d9f36b67 53 /* Request pin mapping */
<> 157:ff67d9f36b67 54 *obj->reg_req |= obj->req_val;
<> 157:ff67d9f36b67 55
<> 157:ff67d9f36b67 56 /* Check for acknowledgment */
<> 157:ff67d9f36b67 57 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
<> 157:ff67d9f36b67 58 }
<> 157:ff67d9f36b67 59 }
<> 157:ff67d9f36b67 60 }
<> 157:ff67d9f36b67 61
<> 157:ff67d9f36b67 62 void pin_mode(PinName name, PinMode mode)
<> 157:ff67d9f36b67 63 {
<> 157:ff67d9f36b67 64 MBED_ASSERT(name != (PinName)NC);
<> 157:ff67d9f36b67 65 unsigned int port = PINNAME_TO_PORT(name);
<> 157:ff67d9f36b67 66 unsigned int pin = PINNAME_TO_PIN(name);
<> 157:ff67d9f36b67 67
<> 157:ff67d9f36b67 68 /* Must set mode while retaining direction */
<> 157:ff67d9f36b67 69
<> 157:ff67d9f36b67 70 /* Get the current direction */
<> 157:ff67d9f36b67 71 uint32_t curr_mode = (MXC_GPIO->out_mode[port] >> (pin * 4)) & 0xF;
<> 157:ff67d9f36b67 72 PinDirection direction = PIN_OUTPUT;
<> 157:ff67d9f36b67 73 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) ||
<> 157:ff67d9f36b67 74 (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN) ||
<> 157:ff67d9f36b67 75 (curr_mode == MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z)) {
<> 157:ff67d9f36b67 76 direction = PIN_INPUT;
<> 157:ff67d9f36b67 77 }
<> 157:ff67d9f36b67 78
<> 157:ff67d9f36b67 79 /* Set mode based on current direction */
<> 157:ff67d9f36b67 80 pin_dir_mode(name, direction, mode);
<> 157:ff67d9f36b67 81 }