Amit Gandhi / mbed-dev

test

Fork of mbed-dev by mbed official

targets/hal/TARGET_Maxim/TARGET_MAX32600/pinmap.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)

Committer:
<>
Date:
Fri Sep 02 15:07:44 2016 +0100
Revision:
144:ef7eb2e8f9f7
Parent:
0:9b334a45a8ff 
This updates the lib to the mbed lib v125

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /*******************************************************************************
<> 144:ef7eb2e8f9f7 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Permission is hereby granted, free of charge, to any person obtaining a
<> 144:ef7eb2e8f9f7 5 * copy of this software and associated documentation files (the "Software"),
<> 144:ef7eb2e8f9f7 6 * to deal in the Software without restriction, including without limitation
<> 144:ef7eb2e8f9f7 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
<> 144:ef7eb2e8f9f7 8 * and/or sell copies of the Software, and to permit persons to whom the
<> 144:ef7eb2e8f9f7 9 * Software is furnished to do so, subject to the following conditions:
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * The above copyright notice and this permission notice shall be included
<> 144:ef7eb2e8f9f7 12 * in all copies or substantial portions of the Software.
<> 144:ef7eb2e8f9f7 13 *
<> 144:ef7eb2e8f9f7 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
<> 144:ef7eb2e8f9f7 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
<> 144:ef7eb2e8f9f7 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
<> 144:ef7eb2e8f9f7 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
<> 144:ef7eb2e8f9f7 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
<> 144:ef7eb2e8f9f7 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
<> 144:ef7eb2e8f9f7 20 * OTHER DEALINGS IN THE SOFTWARE.
<> 144:ef7eb2e8f9f7 21 *
<> 144:ef7eb2e8f9f7 22 * Except as contained in this notice, the name of Maxim Integrated
<> 144:ef7eb2e8f9f7 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
<> 144:ef7eb2e8f9f7 24 * Products, Inc. Branding Policy.
<> 144:ef7eb2e8f9f7 25 *
<> 144:ef7eb2e8f9f7 26 * The mere transfer of this software does not imply any licenses
<> 144:ef7eb2e8f9f7 27 * of trade secrets, proprietary technology, copyrights, patents,
<> 144:ef7eb2e8f9f7 28 * trademarks, maskwork rights, or any other form of intellectual
<> 144:ef7eb2e8f9f7 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
<> 144:ef7eb2e8f9f7 30 * ownership rights.
<> 144:ef7eb2e8f9f7 31 *******************************************************************************
<> 144:ef7eb2e8f9f7 32 */
<> 144:ef7eb2e8f9f7 33
<> 144:ef7eb2e8f9f7 34 #include "mbed_assert.h"
<> 144:ef7eb2e8f9f7 35 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 36 #include "objects.h"
<> 144:ef7eb2e8f9f7 37 #include "gpio_regs.h"
<> 144:ef7eb2e8f9f7 38 #include "ioman_regs.h"
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 void pin_function(PinName name, int function)
<> 144:ef7eb2e8f9f7 41 {
<> 144:ef7eb2e8f9f7 42 MBED_ASSERT(name != (PinName)NC);
<> 144:ef7eb2e8f9f7 43
<> 144:ef7eb2e8f9f7 44 if ((function >= 0) && (function <= 0xF)) {
<> 144:ef7eb2e8f9f7 45 unsigned int port = PINNAME_TO_PORT(name);
<> 144:ef7eb2e8f9f7 46 unsigned int pin = PINNAME_TO_PIN(name);
<> 144:ef7eb2e8f9f7 47 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
<> 144:ef7eb2e8f9f7 48 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
<> 144:ef7eb2e8f9f7 49 } else {
<> 144:ef7eb2e8f9f7 50 /* Assume this is a pointer to a pin function object */
<> 144:ef7eb2e8f9f7 51 pin_function_t *obj = (pin_function_t*)function;
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
<> 144:ef7eb2e8f9f7 54 /* Request pin mapping */
<> 144:ef7eb2e8f9f7 55 *obj->reg_req |= obj->req_val;
<> 144:ef7eb2e8f9f7 56
<> 144:ef7eb2e8f9f7 57 /* Check for acknowledgment */
<> 144:ef7eb2e8f9f7 58 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
<> 144:ef7eb2e8f9f7 59 }
<> 144:ef7eb2e8f9f7 60 }
<> 144:ef7eb2e8f9f7 61 }
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 void pin_mode(PinName name, PinMode mode)
<> 144:ef7eb2e8f9f7 64 {
<> 144:ef7eb2e8f9f7 65 MBED_ASSERT(name != (PinName)NC);
<> 144:ef7eb2e8f9f7 66 unsigned int port = PINNAME_TO_PORT(name);
<> 144:ef7eb2e8f9f7 67 unsigned int pin = PINNAME_TO_PIN(name);
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 /* Must set mode while retaining direction */
<> 144:ef7eb2e8f9f7 70
<> 144:ef7eb2e8f9f7 71 /* Get the current direction */
<> 144:ef7eb2e8f9f7 72 uint32_t out_mode = MXC_GPIO->out_mode[port];
<> 144:ef7eb2e8f9f7 73 uint32_t curr_mode = (out_mode >> (pin*4)) & 0xF;
<> 144:ef7eb2e8f9f7 74 PinDirection dir = PIN_OUTPUT;
<> 144:ef7eb2e8f9f7 75 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) || (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z)) {
<> 144:ef7eb2e8f9f7 76 dir = PIN_INPUT;
<> 144:ef7eb2e8f9f7 77 }
<> 144:ef7eb2e8f9f7 78
<> 144:ef7eb2e8f9f7 79 /* Set mode based on current direction */
<> 144:ef7eb2e8f9f7 80 uint32_t new_mode;
<> 144:ef7eb2e8f9f7 81 if (dir == PIN_OUTPUT) {
<> 144:ef7eb2e8f9f7 82 // PullUp = not valid,
<> 144:ef7eb2e8f9f7 83 // OpenDrain = MXC_V_GPIO_OUT_MODE_OD,
<> 144:ef7eb2e8f9f7 84 // PullNone = MXC_V_GPIO_OUT_MODE_NORMAL,
<> 144:ef7eb2e8f9f7 85 if (mode == OpenDrain) {
<> 144:ef7eb2e8f9f7 86 new_mode = MXC_V_GPIO_OUT_MODE_OPEN_DRAIN;
<> 144:ef7eb2e8f9f7 87 } else {
<> 144:ef7eb2e8f9f7 88 new_mode = MXC_V_GPIO_OUT_MODE_NORMAL_DRIVE;
<> 144:ef7eb2e8f9f7 89 }
<> 144:ef7eb2e8f9f7 90 } else {
<> 144:ef7eb2e8f9f7 91 // PullUp = MXC_V_GPIO_OUT_MODE_HIZPU,
<> 144:ef7eb2e8f9f7 92 // OpenDrain = not valid,
<> 144:ef7eb2e8f9f7 93 // PullNone = MXC_V_GPIO_OUT_MODE_HIZ,
<> 144:ef7eb2e8f9f7 94 if (mode == PullUp) {
<> 144:ef7eb2e8f9f7 95 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP;
<> 144:ef7eb2e8f9f7 96 } else {
<> 144:ef7eb2e8f9f7 97 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z;
<> 144:ef7eb2e8f9f7 98 }
<> 144:ef7eb2e8f9f7 99 }
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 /* Set new mode */
<> 144:ef7eb2e8f9f7 102 out_mode &= ~(0xF << (pin*4));
<> 144:ef7eb2e8f9f7 103 out_mode |= (new_mode << (pin*4));
<> 144:ef7eb2e8f9f7 104 MXC_GPIO->out_mode[port] = out_mode;
<> 144:ef7eb2e8f9f7 105 }