b luo / mbed-dev

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-dev by mbed official

targets/TARGET_ublox/TARGET_HI2110/port_api.c@151:91825d030f9b, 2016-11-14 (annotated)

Committer:
DangerousElectrician
Date:
Mon Nov 14 04:39:23 2016 +0000
Revision:
151:91825d030f9b
Parent:
150:02e0a0aed4ec 
stuff changed?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 150:02e0a0aed4ec 1 /* mbed Microcontroller Library
<> 150:02e0a0aed4ec 2 * Copyright (c) 2016 u-blox
<> 150:02e0a0aed4ec 3 *
<> 150:02e0a0aed4ec 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 150:02e0a0aed4ec 5 * you may not use this file except in compliance with the License.
<> 150:02e0a0aed4ec 6 * You may obtain a copy of the License at
<> 150:02e0a0aed4ec 7 *
<> 150:02e0a0aed4ec 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 150:02e0a0aed4ec 9 *
<> 150:02e0a0aed4ec 10 * Unless required by applicable law or agreed to in writing, software
<> 150:02e0a0aed4ec 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 150:02e0a0aed4ec 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 150:02e0a0aed4ec 13 * See the License for the specific language governing permissions and
<> 150:02e0a0aed4ec 14 * limitations under the License.
<> 150:02e0a0aed4ec 15 */
<> 150:02e0a0aed4ec 16
<> 150:02e0a0aed4ec 17 /* TODO: this needs testing */
<> 150:02e0a0aed4ec 18
<> 150:02e0a0aed4ec 19 #include "port_api.h"
<> 150:02e0a0aed4ec 20 #include "pinmap.h"
<> 150:02e0a0aed4ec 21 #include "gpio_api.h"
<> 150:02e0a0aed4ec 22
<> 150:02e0a0aed4ec 23 PinName port_pin(PortName port, int pin_n)
<> 150:02e0a0aed4ec 24 {
<> 150:02e0a0aed4ec 25 MBED_ASSERT (port < PortMaxNumber);
<> 150:02e0a0aed4ec 26
<> 150:02e0a0aed4ec 27 (void) port;
<> 150:02e0a0aed4ec 28 return (PinName)(pin_n);
<> 150:02e0a0aed4ec 29 }
<> 150:02e0a0aed4ec 30
<> 150:02e0a0aed4ec 31 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
<> 150:02e0a0aed4ec 32 {
<> 150:02e0a0aed4ec 33 MBED_ASSERT (port < PortMaxNumber);
<> 150:02e0a0aed4ec 34
<> 150:02e0a0aed4ec 35 obj->port = port;
<> 150:02e0a0aed4ec 36 obj->mask = mask;
<> 150:02e0a0aed4ec 37
<> 150:02e0a0aed4ec 38 obj->reg_dir = &GPIO_DIR;
<> 150:02e0a0aed4ec 39 obj->reg_out = &GPIO_OUT;
<> 150:02e0a0aed4ec 40 obj->reg_val = &GPIO_VALUE;
<> 150:02e0a0aed4ec 41 obj->reg_drv = &GPIO_DRIVE;
<> 150:02e0a0aed4ec 42
<> 150:02e0a0aed4ec 43 /* Claim the pins */
<> 150:02e0a0aed4ec 44 for (uint8_t x = 0; x < NUM_PINS; x++) {
<> 150:02e0a0aed4ec 45 if (mask & (1ul << x)) {
<> 150:02e0a0aed4ec 46 pin_function((PinName) x, PIN_FUNCTION_GPIO);
<> 150:02e0a0aed4ec 47 }
<> 150:02e0a0aed4ec 48 }
<> 150:02e0a0aed4ec 49
<> 150:02e0a0aed4ec 50 /* Set up the pins */
<> 150:02e0a0aed4ec 51 port_dir(obj, dir);
<> 150:02e0a0aed4ec 52 }
<> 150:02e0a0aed4ec 53
<> 150:02e0a0aed4ec 54 void port_mode(port_t *obj, PinMode mode)
<> 150:02e0a0aed4ec 55 {
<> 150:02e0a0aed4ec 56 switch (mode) {
<> 150:02e0a0aed4ec 57 case PullUp:
<> 150:02e0a0aed4ec 58 {
<> 150:02e0a0aed4ec 59 MBED_ASSERT(false); /* Not currently supported on HI2110 */
<> 150:02e0a0aed4ec 60 }
<> 150:02e0a0aed4ec 61 break;
<> 150:02e0a0aed4ec 62 case PullDown:
<> 150:02e0a0aed4ec 63 {
<> 150:02e0a0aed4ec 64 GPIO_PULLEN_BITSET |= obj->mask;
<> 150:02e0a0aed4ec 65 }
<> 150:02e0a0aed4ec 66 break;
<> 150:02e0a0aed4ec 67 case PullNone:
<> 150:02e0a0aed4ec 68 {
<> 150:02e0a0aed4ec 69 GPIO_PULLEN_BITCLR &= ~(obj->mask);
<> 150:02e0a0aed4ec 70 }
<> 150:02e0a0aed4ec 71 break;
<> 150:02e0a0aed4ec 72 default:
<> 150:02e0a0aed4ec 73 break;
<> 150:02e0a0aed4ec 74 }
<> 150:02e0a0aed4ec 75 }
<> 150:02e0a0aed4ec 76
<> 150:02e0a0aed4ec 77 void port_dir(port_t *obj, PinDirection dir)
<> 150:02e0a0aed4ec 78 {
<> 150:02e0a0aed4ec 79 switch (dir) {
<> 150:02e0a0aed4ec 80 case PIN_INPUT:
<> 150:02e0a0aed4ec 81 {
<> 150:02e0a0aed4ec 82 *(obj->reg_dir) &= ~(obj->mask);
<> 150:02e0a0aed4ec 83 }
<> 150:02e0a0aed4ec 84 break;
<> 150:02e0a0aed4ec 85 case PIN_OUTPUT:
<> 150:02e0a0aed4ec 86 {
<> 150:02e0a0aed4ec 87 *(obj->reg_dir) |= obj->mask;
<> 150:02e0a0aed4ec 88 /* TODO: do we need to set the drive strength? If so, how do we decide which way? */
<> 150:02e0a0aed4ec 89 /* obj->reg_drv |= obj->mask; */
<> 150:02e0a0aed4ec 90 }
<> 150:02e0a0aed4ec 91 break;
<> 150:02e0a0aed4ec 92 }
<> 150:02e0a0aed4ec 93 }
<> 150:02e0a0aed4ec 94
<> 150:02e0a0aed4ec 95 void port_write(port_t *obj, int value)
<> 150:02e0a0aed4ec 96 {
<> 150:02e0a0aed4ec 97 *(obj->reg_out) = value;
<> 150:02e0a0aed4ec 98 }
<> 150:02e0a0aed4ec 99
<> 150:02e0a0aed4ec 100 int port_read(port_t *obj)
<> 150:02e0a0aed4ec 101 {
<> 150:02e0a0aed4ec 102 return *(obj->reg_val);
<> 150:02e0a0aed4ec 103 }