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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/port_api.c@627:4fa1328d9c60, 2015-09-25 (annotated)

Committer:
mbed_official
Date:
Fri Sep 25 14:15:10 2015 +0100
Revision:
627:4fa1328d9c60
Parent:
548:1abac31e188e 
Synchronized with git revision fe238a91ab7a4d1d72c4cab9da04967c619d54ad



Full URL: https://github.com/mbedmicro/mbed/commit/fe238a91ab7a4d1d72c4cab9da04967c619d54ad/



Silicon Labs - Add support for low-power async Serial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 627:4fa1328d9c60 1 /***************************************************************************//**
mbed_official 627:4fa1328d9c60 2 * @file port_api.c
mbed_official 627:4fa1328d9c60 3 *******************************************************************************
mbed_official 627:4fa1328d9c60 4 * @section License
mbed_official 627:4fa1328d9c60 5 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
mbed_official 627:4fa1328d9c60 6 *******************************************************************************
mbed_official 525:c320967f86b9 7 *
mbed_official 627:4fa1328d9c60 8 * Permission is granted to anyone to use this software for any purpose,
mbed_official 627:4fa1328d9c60 9 * including commercial applications, and to alter it and redistribute it
mbed_official 627:4fa1328d9c60 10 * freely, subject to the following restrictions:
mbed_official 525:c320967f86b9 11 *
mbed_official 627:4fa1328d9c60 12 * 1. The origin of this software must not be misrepresented; you must not
mbed_official 627:4fa1328d9c60 13 * claim that you wrote the original software.
mbed_official 627:4fa1328d9c60 14 * 2. Altered source versions must be plainly marked as such, and must not be
mbed_official 627:4fa1328d9c60 15 * misrepresented as being the original software.
mbed_official 627:4fa1328d9c60 16 * 3. This notice may not be removed or altered from any source distribution.
mbed_official 525:c320967f86b9 17 *
mbed_official 627:4fa1328d9c60 18 * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
mbed_official 627:4fa1328d9c60 19 * obligation to support this Software. Silicon Labs is providing the
mbed_official 627:4fa1328d9c60 20 * Software "AS IS", with no express or implied warranties of any kind,
mbed_official 627:4fa1328d9c60 21 * including, but not limited to, any implied warranties of merchantability
mbed_official 627:4fa1328d9c60 22 * or fitness for any particular purpose or warranties against infringement
mbed_official 627:4fa1328d9c60 23 * of any proprietary rights of a third party.
mbed_official 627:4fa1328d9c60 24 *
mbed_official 627:4fa1328d9c60 25 * Silicon Labs will not be liable for any consequential, incidental, or
mbed_official 627:4fa1328d9c60 26 * special damages, or any other relief, or for any claim by any third party,
mbed_official 627:4fa1328d9c60 27 * arising from your use of this Software.
mbed_official 627:4fa1328d9c60 28 *
mbed_official 627:4fa1328d9c60 29 ******************************************************************************/
mbed_official 525:c320967f86b9 30
mbed_official 525:c320967f86b9 31 #include "device.h"
mbed_official 525:c320967f86b9 32 #if DEVICE_PORTOUT
mbed_official 525:c320967f86b9 33
mbed_official 525:c320967f86b9 34 #include "port_api.h"
mbed_official 525:c320967f86b9 35 #include "pinmap.h"
mbed_official 525:c320967f86b9 36 #include "gpio_api.h"
mbed_official 525:c320967f86b9 37 #include "em_gpio.h"
mbed_official 525:c320967f86b9 38 #include "em_cmu.h"
mbed_official 525:c320967f86b9 39
mbed_official 525:c320967f86b9 40 #define PORT_NUM_PINS 16
mbed_official 525:c320967f86b9 41
mbed_official 525:c320967f86b9 42 uint8_t port_get_index(port_t *obj)
mbed_official 525:c320967f86b9 43 {
mbed_official 525:c320967f86b9 44 return 0;
mbed_official 525:c320967f86b9 45 }
mbed_official 525:c320967f86b9 46
mbed_official 525:c320967f86b9 47 PinName port_pin(PortName port, int pin_n)
mbed_official 525:c320967f86b9 48 {
mbed_official 525:c320967f86b9 49 return (PinName) (pin_n | port << 4); // Encode pin and port number in one uint32
mbed_official 525:c320967f86b9 50 }
mbed_official 525:c320967f86b9 51
mbed_official 525:c320967f86b9 52 void port_preinit(port_t *obj, PortName port, int mask, PinDirection dir)
mbed_official 525:c320967f86b9 53 {
mbed_official 525:c320967f86b9 54 obj->mask = mask;
mbed_official 525:c320967f86b9 55 obj->port = port;
mbed_official 525:c320967f86b9 56 obj->dir = dir;
mbed_official 525:c320967f86b9 57 }
mbed_official 525:c320967f86b9 58
mbed_official 525:c320967f86b9 59 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
mbed_official 525:c320967f86b9 60 {
mbed_official 548:1abac31e188e 61 port_preinit(obj, port, mask, dir);
mbed_official 525:c320967f86b9 62 port_dir(obj, obj->dir);
mbed_official 525:c320967f86b9 63 }
mbed_official 525:c320967f86b9 64
mbed_official 525:c320967f86b9 65 void port_mode(port_t *obj, PinMode mode)
mbed_official 525:c320967f86b9 66 {
mbed_official 525:c320967f86b9 67 /* Set mode for pins given by mask */
mbed_official 525:c320967f86b9 68 uint32_t pin;
mbed_official 525:c320967f86b9 69 for (pin = 0; pin < PORT_NUM_PINS; pin++) {
mbed_official 525:c320967f86b9 70 if (obj->mask & (1 << pin)) {
mbed_official 525:c320967f86b9 71 pin_mode(port_pin(obj->port, pin), mode);
mbed_official 525:c320967f86b9 72 }
mbed_official 525:c320967f86b9 73 }
mbed_official 525:c320967f86b9 74 }
mbed_official 525:c320967f86b9 75
mbed_official 525:c320967f86b9 76 void port_dir(port_t *obj, PinDirection dir)
mbed_official 525:c320967f86b9 77 {
mbed_official 525:c320967f86b9 78 obj->dir = dir;
mbed_official 525:c320967f86b9 79
mbed_official 525:c320967f86b9 80 /* Set default pin mode for pins given by mask */
mbed_official 525:c320967f86b9 81 switch (dir) {
mbed_official 525:c320967f86b9 82 case PIN_INPUT:
mbed_official 525:c320967f86b9 83 port_mode(obj, PullDefault);
mbed_official 525:c320967f86b9 84 break;
mbed_official 525:c320967f86b9 85 case PIN_OUTPUT:
mbed_official 525:c320967f86b9 86 port_mode(obj, PullNone);
mbed_official 525:c320967f86b9 87 break;
mbed_official 525:c320967f86b9 88 }
mbed_official 525:c320967f86b9 89 }
mbed_official 525:c320967f86b9 90
mbed_official 525:c320967f86b9 91 void port_write(port_t *obj, int value)
mbed_official 525:c320967f86b9 92 {
mbed_official 525:c320967f86b9 93 if (value) {
mbed_official 525:c320967f86b9 94 GPIO_PortOutSet(obj->port, obj->mask);
mbed_official 525:c320967f86b9 95 } else {
mbed_official 525:c320967f86b9 96 GPIO_PortOutClear(obj->port, obj->mask);
mbed_official 525:c320967f86b9 97 }
mbed_official 525:c320967f86b9 98 }
mbed_official 525:c320967f86b9 99
mbed_official 525:c320967f86b9 100 int port_read(port_t *obj)
mbed_official 525:c320967f86b9 101 {
mbed_official 525:c320967f86b9 102 if (obj->dir == PIN_INPUT) {
mbed_official 525:c320967f86b9 103 return (int) (GPIO_PortInGet(obj->port) & obj->mask);
mbed_official 525:c320967f86b9 104 } else {
mbed_official 525:c320967f86b9 105 return (int) (GPIO_PortOutGet(obj->port) & obj->mask);
mbed_official 525:c320967f86b9 106 }
mbed_official 525:c320967f86b9 107 }
mbed_official 525:c320967f86b9 108
mbed_official 525:c320967f86b9 109 #endif