Jonathan Piat / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_Maxim/TARGET_MAX32600/pinmap.c@514:7668256dbe61, 2015-04-16 (annotated)

Committer:
mbed_official
Date:
Thu Apr 16 11:45:13 2015 +0100
Revision:
514:7668256dbe61
Synchronized with git revision 29ab478a78892415a3c721cdc20b1755b7b01ba1



Full URL: https://github.com/mbedmicro/mbed/commit/29ab478a78892415a3c721cdc20b1755b7b01ba1/



LPC824, SSCI824 - Add GCC_ARM exporter support

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 514:7668256dbe61 1 /*******************************************************************************
mbed_official 514:7668256dbe61 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
mbed_official 514:7668256dbe61 3 *
mbed_official 514:7668256dbe61 4 * Permission is hereby granted, free of charge, to any person obtaining a
mbed_official 514:7668256dbe61 5 * copy of this software and associated documentation files (the "Software"),
mbed_official 514:7668256dbe61 6 * to deal in the Software without restriction, including without limitation
mbed_official 514:7668256dbe61 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
mbed_official 514:7668256dbe61 8 * and/or sell copies of the Software, and to permit persons to whom the
mbed_official 514:7668256dbe61 9 * Software is furnished to do so, subject to the following conditions:
mbed_official 514:7668256dbe61 10 *
mbed_official 514:7668256dbe61 11 * The above copyright notice and this permission notice shall be included
mbed_official 514:7668256dbe61 12 * in all copies or substantial portions of the Software.
mbed_official 514:7668256dbe61 13 *
mbed_official 514:7668256dbe61 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
mbed_official 514:7668256dbe61 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
mbed_official 514:7668256dbe61 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
mbed_official 514:7668256dbe61 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
mbed_official 514:7668256dbe61 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
mbed_official 514:7668256dbe61 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
mbed_official 514:7668256dbe61 20 * OTHER DEALINGS IN THE SOFTWARE.
mbed_official 514:7668256dbe61 21 *
mbed_official 514:7668256dbe61 22 * Except as contained in this notice, the name of Maxim Integrated
mbed_official 514:7668256dbe61 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
mbed_official 514:7668256dbe61 24 * Products, Inc. Branding Policy.
mbed_official 514:7668256dbe61 25 *
mbed_official 514:7668256dbe61 26 * The mere transfer of this software does not imply any licenses
mbed_official 514:7668256dbe61 27 * of trade secrets, proprietary technology, copyrights, patents,
mbed_official 514:7668256dbe61 28 * trademarks, maskwork rights, or any other form of intellectual
mbed_official 514:7668256dbe61 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
mbed_official 514:7668256dbe61 30 * ownership rights.
mbed_official 514:7668256dbe61 31 *******************************************************************************
mbed_official 514:7668256dbe61 32 */
mbed_official 514:7668256dbe61 33
mbed_official 514:7668256dbe61 34 #include "mbed_assert.h"
mbed_official 514:7668256dbe61 35 #include "pinmap.h"
mbed_official 514:7668256dbe61 36 #include "objects.h"
mbed_official 514:7668256dbe61 37 #include "gpio_regs.h"
mbed_official 514:7668256dbe61 38 #include "ioman_regs.h"
mbed_official 514:7668256dbe61 39
mbed_official 514:7668256dbe61 40 void pin_function(PinName name, int function)
mbed_official 514:7668256dbe61 41 {
mbed_official 514:7668256dbe61 42 MBED_ASSERT(name != (PinName)NC);
mbed_official 514:7668256dbe61 43
mbed_official 514:7668256dbe61 44 if ((function >= 0) && (function <= 0xF)) {
mbed_official 514:7668256dbe61 45 unsigned int port = PINNAME_TO_PORT(name);
mbed_official 514:7668256dbe61 46 unsigned int pin = PINNAME_TO_PIN(name);
mbed_official 514:7668256dbe61 47 uint32_t temp = MXC_GPIO->func_sel[port] & ~(0xF << (pin*4));
mbed_official 514:7668256dbe61 48 MXC_GPIO->func_sel[port] = temp | ((uint32_t)function << (pin*4));
mbed_official 514:7668256dbe61 49 } else {
mbed_official 514:7668256dbe61 50 /* Assume this is a pointer to a pin function object */
mbed_official 514:7668256dbe61 51 pin_function_t *obj = (pin_function_t*)function;
mbed_official 514:7668256dbe61 52
mbed_official 514:7668256dbe61 53 if ((*obj->reg_ack & obj->ack_mask) != obj->req_val) {
mbed_official 514:7668256dbe61 54 /* Request pin mapping */
mbed_official 514:7668256dbe61 55 *obj->reg_req |= obj->req_val;
mbed_official 514:7668256dbe61 56
mbed_official 514:7668256dbe61 57 /* Check for acknowledgment */
mbed_official 514:7668256dbe61 58 MBED_ASSERT((*obj->reg_ack & obj->ack_mask) == obj->req_val);
mbed_official 514:7668256dbe61 59 }
mbed_official 514:7668256dbe61 60 }
mbed_official 514:7668256dbe61 61 }
mbed_official 514:7668256dbe61 62
mbed_official 514:7668256dbe61 63 void pin_mode(PinName name, PinMode mode)
mbed_official 514:7668256dbe61 64 {
mbed_official 514:7668256dbe61 65 MBED_ASSERT(name != (PinName)NC);
mbed_official 514:7668256dbe61 66 unsigned int port = PINNAME_TO_PORT(name);
mbed_official 514:7668256dbe61 67 unsigned int pin = PINNAME_TO_PIN(name);
mbed_official 514:7668256dbe61 68
mbed_official 514:7668256dbe61 69 /* Must set mode while retaining direction */
mbed_official 514:7668256dbe61 70
mbed_official 514:7668256dbe61 71 /* Get the current direction */
mbed_official 514:7668256dbe61 72 uint32_t out_mode = MXC_GPIO->out_mode[port];
mbed_official 514:7668256dbe61 73 uint32_t curr_mode = (out_mode >> (pin*4)) & 0xF;
mbed_official 514:7668256dbe61 74 PinDirection dir = PIN_OUTPUT;
mbed_official 514:7668256dbe61 75 if ((curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP) || (curr_mode == MXC_V_GPIO_OUT_MODE_HIGH_Z)) {
mbed_official 514:7668256dbe61 76 dir = PIN_INPUT;
mbed_official 514:7668256dbe61 77 }
mbed_official 514:7668256dbe61 78
mbed_official 514:7668256dbe61 79 /* Set mode based on current direction */
mbed_official 514:7668256dbe61 80 uint32_t new_mode;
mbed_official 514:7668256dbe61 81 if (dir == PIN_OUTPUT) {
mbed_official 514:7668256dbe61 82 // PullUp = not valid,
mbed_official 514:7668256dbe61 83 // OpenDrain = MXC_V_GPIO_OUT_MODE_OD,
mbed_official 514:7668256dbe61 84 // PullNone = MXC_V_GPIO_OUT_MODE_NORMAL,
mbed_official 514:7668256dbe61 85 if (mode == OpenDrain) {
mbed_official 514:7668256dbe61 86 new_mode = MXC_V_GPIO_OUT_MODE_OPEN_DRAIN;
mbed_official 514:7668256dbe61 87 } else {
mbed_official 514:7668256dbe61 88 new_mode = MXC_V_GPIO_OUT_MODE_NORMAL_DRIVE;
mbed_official 514:7668256dbe61 89 }
mbed_official 514:7668256dbe61 90 } else {
mbed_official 514:7668256dbe61 91 // PullUp = MXC_V_GPIO_OUT_MODE_HIZPU,
mbed_official 514:7668256dbe61 92 // OpenDrain = not valid,
mbed_official 514:7668256dbe61 93 // PullNone = MXC_V_GPIO_OUT_MODE_HIZ,
mbed_official 514:7668256dbe61 94 if (mode == PullUp) {
mbed_official 514:7668256dbe61 95 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP;
mbed_official 514:7668256dbe61 96 } else {
mbed_official 514:7668256dbe61 97 new_mode = MXC_V_GPIO_OUT_MODE_HIGH_Z;
mbed_official 514:7668256dbe61 98 }
mbed_official 514:7668256dbe61 99 }
mbed_official 514:7668256dbe61 100
mbed_official 514:7668256dbe61 101 /* Set new mode */
mbed_official 514:7668256dbe61 102 out_mode &= ~(0xF << (pin*4));
mbed_official 514:7668256dbe61 103 out_mode |= (new_mode << (pin*4));
mbed_official 514:7668256dbe61 104 MXC_GPIO->out_mode[port] = out_mode;
mbed_official 514:7668256dbe61 105 }