MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_Maxim/TARGET_MAX32620/pinmap.c@18:6a4db94011d3, 2017-05-14 (annotated)

Committer:
sahilmgandhi
Date:
Sun May 14 23:18:57 2017 +0000
Revision:
18:6a4db94011d3
Publishing again

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /*******************************************************************************
sahilmgandhi 18:6a4db94011d3 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
sahilmgandhi 18:6a4db94011d3 3 *
sahilmgandhi 18:6a4db94011d3 4 * Permission is hereby granted, free of charge, to any person obtaining a
sahilmgandhi 18:6a4db94011d3 5 * copy of this software and associated documentation files (the "Software"),
sahilmgandhi 18:6a4db94011d3 6 * to deal in the Software without restriction, including without limitation
sahilmgandhi 18:6a4db94011d3 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
sahilmgandhi 18:6a4db94011d3 8 * and/or sell copies of the Software, and to permit persons to whom the
sahilmgandhi 18:6a4db94011d3 9 * Software is furnished to do so, subject to the following conditions:
sahilmgandhi 18:6a4db94011d3 10 *
sahilmgandhi 18:6a4db94011d3 11 * The above copyright notice and this permission notice shall be included
sahilmgandhi 18:6a4db94011d3 12 * in all copies or substantial portions of the Software.
sahilmgandhi 18:6a4db94011d3 13 *
sahilmgandhi 18:6a4db94011d3 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
sahilmgandhi 18:6a4db94011d3 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
sahilmgandhi 18:6a4db94011d3 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
sahilmgandhi 18:6a4db94011d3 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
sahilmgandhi 18:6a4db94011d3 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
sahilmgandhi 18:6a4db94011d3 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
sahilmgandhi 18:6a4db94011d3 20 * OTHER DEALINGS IN THE SOFTWARE.
sahilmgandhi 18:6a4db94011d3 21 *
sahilmgandhi 18:6a4db94011d3 22 * Except as contained in this notice, the name of Maxim Integrated
sahilmgandhi 18:6a4db94011d3 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
sahilmgandhi 18:6a4db94011d3 24 * Products, Inc. Branding Policy.
sahilmgandhi 18:6a4db94011d3 25 *
sahilmgandhi 18:6a4db94011d3 26 * The mere transfer of this software does not imply any licenses
sahilmgandhi 18:6a4db94011d3 27 * of trade secrets, proprietary technology, copyrights, patents,
sahilmgandhi 18:6a4db94011d3 28 * trademarks, maskwork rights, or any other form of intellectual
sahilmgandhi 18:6a4db94011d3 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
sahilmgandhi 18:6a4db94011d3 30 * ownership rights.
sahilmgandhi 18:6a4db94011d3 31 *******************************************************************************
sahilmgandhi 18:6a4db94011d3 32 */
sahilmgandhi 18:6a4db94011d3 33
sahilmgandhi 18:6a4db94011d3 34 #include "mbed_assert.h"
sahilmgandhi 18:6a4db94011d3 35 #include "pinmap.h"
sahilmgandhi 18:6a4db94011d3 36 #include "objects.h"
sahilmgandhi 18:6a4db94011d3 37 #include "gpio_regs.h"
sahilmgandhi 18:6a4db94011d3 38 #include "ioman_regs.h"
sahilmgandhi 18:6a4db94011d3 39
sahilmgandhi 18:6a4db94011d3 40 void pin_function(PinName name, int function)
sahilmgandhi 18:6a4db94011d3 41 {
sahilmgandhi 18:6a4db94011d3 42 MBED_ASSERT(name != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 43
sahilmgandhi 18:6a4db94011d3 44 if ((function >= 0) && (function <= 0xF)) {
sahilmgandhi 18:6a4db94011d3 45 unsigned int port = PINNAME_TO_PORT(name);
sahilmgandhi 18:6a4db94011d3 46 unsigned int pin = PINNAME_TO_PIN(name);
sahilmgandhi 18:6a4db94011d3 47 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
sahilmgandhi 18:6a4db94011d3 48 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
sahilmgandhi 18:6a4db94011d3 49 } else {
sahilmgandhi 18:6a4db94011d3 50 /* Assume this is a pointer to a pin function object */
sahilmgandhi 18:6a4db94011d3 51 pin_function_t *obj = (pin_function_t*)function;
sahilmgandhi 18:6a4db94011d3 52
sahilmgandhi 18:6a4db94011d3 53 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
sahilmgandhi 18:6a4db94011d3 54 /* Request pin mapping */
sahilmgandhi 18:6a4db94011d3 55 *obj->reg_req |= obj->req_val;
sahilmgandhi 18:6a4db94011d3 56
sahilmgandhi 18:6a4db94011d3 57 /* Check for acknowledgment */
sahilmgandhi 18:6a4db94011d3 58 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
sahilmgandhi 18:6a4db94011d3 59 }
sahilmgandhi 18:6a4db94011d3 60 }
sahilmgandhi 18:6a4db94011d3 61 }
sahilmgandhi 18:6a4db94011d3 62
sahilmgandhi 18:6a4db94011d3 63 void pin_mode(PinName name, PinMode mode)
sahilmgandhi 18:6a4db94011d3 64 {
sahilmgandhi 18:6a4db94011d3 65 MBED_ASSERT(name != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 66 unsigned int port = PINNAME_TO_PORT(name);
sahilmgandhi 18:6a4db94011d3 67 unsigned int pin = PINNAME_TO_PIN(name);
sahilmgandhi 18:6a4db94011d3 68
sahilmgandhi 18:6a4db94011d3 69 /* Must set mode while retaining direction */
sahilmgandhi 18:6a4db94011d3 70
sahilmgandhi 18:6a4db94011d3 71 /* Get the current direction */
sahilmgandhi 18:6a4db94011d3 72 uint32_t out_mode = MXC_GPIO->out_mode[port];
sahilmgandhi 18:6a4db94011d3 73 uint32_t curr_mode = (out_mode >> (pin * 4)) & 0xF;
sahilmgandhi 18:6a4db94011d3 74 PinDirection dir = PIN_OUTPUT;
sahilmgandhi 18:6a4db94011d3 75 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) ||
sahilmgandhi 18:6a4db94011d3 76 (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN) ||
sahilmgandhi 18:6a4db94011d3 77 (curr_mode == MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z)) {
sahilmgandhi 18:6a4db94011d3 78 dir = PIN_INPUT;
sahilmgandhi 18:6a4db94011d3 79 }
sahilmgandhi 18:6a4db94011d3 80
sahilmgandhi 18:6a4db94011d3 81 /* Set mode based on current direction */
sahilmgandhi 18:6a4db94011d3 82 uint32_t new_mode;
sahilmgandhi 18:6a4db94011d3 83 if (dir == PIN_OUTPUT) {
sahilmgandhi 18:6a4db94011d3 84 // PullUp = not valid,
sahilmgandhi 18:6a4db94011d3 85 // PullDown = not valid,
sahilmgandhi 18:6a4db94011d3 86 // OpenDrain = MXC_V_GPIO_OUT_MODE_OD,
sahilmgandhi 18:6a4db94011d3 87 // PullNone = MXC_V_GPIO_OUT_MODE_NORMAL,
sahilmgandhi 18:6a4db94011d3 88 if (mode == OpenDrain) {
sahilmgandhi 18:6a4db94011d3 89 new_mode = MXC_V_GPIO_OUT_MODE_OPEN_DRAIN;
sahilmgandhi 18:6a4db94011d3 90 } else {
sahilmgandhi 18:6a4db94011d3 91 new_mode = MXC_V_GPIO_OUT_MODE_NORMAL;
sahilmgandhi 18:6a4db94011d3 92 }
sahilmgandhi 18:6a4db94011d3 93 } else {
sahilmgandhi 18:6a4db94011d3 94 // PullUp = MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP
sahilmgandhi 18:6a4db94011d3 95 // PullDown = MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN
sahilmgandhi 18:6a4db94011d3 96 // OpenDrain = MXC_V_GPIO_OUT_MODE_OD
sahilmgandhi 18:6a4db94011d3 97 // PullNone = MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z
sahilmgandhi 18:6a4db94011d3 98 if (mode == PullUp) {
sahilmgandhi 18:6a4db94011d3 99 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP;
sahilmgandhi 18:6a4db94011d3 100 MXC_GPIO->out_val[port] |= 1 << pin;
sahilmgandhi 18:6a4db94011d3 101 } else if (mode == PullDown) {
sahilmgandhi 18:6a4db94011d3 102 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLDOWN;
sahilmgandhi 18:6a4db94011d3 103 MXC_GPIO->out_val[port] &= ~(1 << pin);
sahilmgandhi 18:6a4db94011d3 104 } else if (mode == OpenDrain) {
sahilmgandhi 18:6a4db94011d3 105 new_mode = MXC_V_GPIO_OUT_MODE_OPEN_DRAIN;
sahilmgandhi 18:6a4db94011d3 106 MXC_GPIO->out_val[port] |= 1 << pin;
sahilmgandhi 18:6a4db94011d3 107 } else {
sahilmgandhi 18:6a4db94011d3 108 new_mode = MXC_V_GPIO_OUT_MODE_NORMAL_HIGH_Z;
sahilmgandhi 18:6a4db94011d3 109 MXC_GPIO->out_val[port] &= ~(1 << pin);
sahilmgandhi 18:6a4db94011d3 110 }
sahilmgandhi 18:6a4db94011d3 111 }
sahilmgandhi 18:6a4db94011d3 112
sahilmgandhi 18:6a4db94011d3 113 /* Set new mode */
sahilmgandhi 18:6a4db94011d3 114 out_mode &= ~(0xF << (pin * 4));
sahilmgandhi 18:6a4db94011d3 115 out_mode |= (new_mode << (pin * 4));
sahilmgandhi 18:6a4db94011d3 116 MXC_GPIO->out_mode[port] = out_mode;
sahilmgandhi 18:6a4db94011d3 117 }