mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/port_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
50:a417edff4437
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /***************************************************************************//**
bogdanm 0:9b334a45a8ff 2 * @file port_api.c
bogdanm 0:9b334a45a8ff 3 *******************************************************************************
bogdanm 0:9b334a45a8ff 4 * @section License
bogdanm 0:9b334a45a8ff 5 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
bogdanm 0:9b334a45a8ff 6 *******************************************************************************
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * Permission is granted to anyone to use this software for any purpose,
bogdanm 0:9b334a45a8ff 9 * including commercial applications, and to alter it and redistribute it
bogdanm 0:9b334a45a8ff 10 * freely, subject to the following restrictions:
bogdanm 0:9b334a45a8ff 11 *
bogdanm 0:9b334a45a8ff 12 * 1. The origin of this software must not be misrepresented; you must not
bogdanm 0:9b334a45a8ff 13 * claim that you wrote the original software.
bogdanm 0:9b334a45a8ff 14 * 2. Altered source versions must be plainly marked as such, and must not be
bogdanm 0:9b334a45a8ff 15 * misrepresented as being the original software.
bogdanm 0:9b334a45a8ff 16 * 3. This notice may not be removed or altered from any source distribution.
bogdanm 0:9b334a45a8ff 17 *
bogdanm 0:9b334a45a8ff 18 * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
bogdanm 0:9b334a45a8ff 19 * obligation to support this Software. Silicon Labs is providing the
bogdanm 0:9b334a45a8ff 20 * Software "AS IS", with no express or implied warranties of any kind,
bogdanm 0:9b334a45a8ff 21 * including, but not limited to, any implied warranties of merchantability
bogdanm 0:9b334a45a8ff 22 * or fitness for any particular purpose or warranties against infringement
bogdanm 0:9b334a45a8ff 23 * of any proprietary rights of a third party.
bogdanm 0:9b334a45a8ff 24 *
bogdanm 0:9b334a45a8ff 25 * Silicon Labs will not be liable for any consequential, incidental, or
bogdanm 0:9b334a45a8ff 26 * special damages, or any other relief, or for any claim by any third party,
bogdanm 0:9b334a45a8ff 27 * arising from your use of this Software.
bogdanm 0:9b334a45a8ff 28 *
bogdanm 0:9b334a45a8ff 29 ******************************************************************************/
bogdanm 0:9b334a45a8ff 30
bogdanm 0:9b334a45a8ff 31 #include "device.h"
bogdanm 0:9b334a45a8ff 32 #if DEVICE_PORTOUT
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 #include "port_api.h"
bogdanm 0:9b334a45a8ff 35 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 36 #include "gpio_api.h"
bogdanm 0:9b334a45a8ff 37 #include "em_gpio.h"
bogdanm 0:9b334a45a8ff 38 #include "em_cmu.h"
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 #define PORT_NUM_PINS 16
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 uint8_t port_get_index(port_t *obj)
bogdanm 0:9b334a45a8ff 43 {
bogdanm 0:9b334a45a8ff 44 return 0;
bogdanm 0:9b334a45a8ff 45 }
bogdanm 0:9b334a45a8ff 46
bogdanm 0:9b334a45a8ff 47 PinName port_pin(PortName port, int pin_n)
bogdanm 0:9b334a45a8ff 48 {
bogdanm 0:9b334a45a8ff 49 return (PinName) (pin_n | port << 4); // Encode pin and port number in one uint32
bogdanm 0:9b334a45a8ff 50 }
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 void port_preinit(port_t *obj, PortName port, int mask, PinDirection dir)
bogdanm 0:9b334a45a8ff 53 {
bogdanm 0:9b334a45a8ff 54 obj->mask = mask;
bogdanm 0:9b334a45a8ff 55 obj->port = port;
bogdanm 0:9b334a45a8ff 56 obj->dir = dir;
bogdanm 0:9b334a45a8ff 57 }
bogdanm 0:9b334a45a8ff 58
bogdanm 0:9b334a45a8ff 59 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
bogdanm 0:9b334a45a8ff 60 {
bogdanm 0:9b334a45a8ff 61 port_preinit(obj, port, mask, dir);
bogdanm 0:9b334a45a8ff 62 port_dir(obj, obj->dir);
bogdanm 0:9b334a45a8ff 63 }
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 void port_mode(port_t *obj, PinMode mode)
bogdanm 0:9b334a45a8ff 66 {
bogdanm 0:9b334a45a8ff 67 /* Set mode for pins given by mask */
bogdanm 0:9b334a45a8ff 68 uint32_t pin;
bogdanm 0:9b334a45a8ff 69 for (pin = 0; pin < PORT_NUM_PINS; pin++) {
bogdanm 0:9b334a45a8ff 70 if (obj->mask & (1 << pin)) {
bogdanm 0:9b334a45a8ff 71 pin_mode(port_pin(obj->port, pin), mode);
bogdanm 0:9b334a45a8ff 72 }
bogdanm 0:9b334a45a8ff 73 }
bogdanm 0:9b334a45a8ff 74 }
bogdanm 0:9b334a45a8ff 75
bogdanm 0:9b334a45a8ff 76 void port_dir(port_t *obj, PinDirection dir)
bogdanm 0:9b334a45a8ff 77 {
bogdanm 0:9b334a45a8ff 78 obj->dir = dir;
bogdanm 0:9b334a45a8ff 79
bogdanm 0:9b334a45a8ff 80 /* Set default pin mode for pins given by mask */
bogdanm 0:9b334a45a8ff 81 switch (dir) {
bogdanm 0:9b334a45a8ff 82 case PIN_INPUT:
bogdanm 0:9b334a45a8ff 83 port_mode(obj, PullDefault);
bogdanm 0:9b334a45a8ff 84 break;
bogdanm 0:9b334a45a8ff 85 case PIN_OUTPUT:
bogdanm 0:9b334a45a8ff 86 port_mode(obj, PullNone);
bogdanm 0:9b334a45a8ff 87 break;
bogdanm 0:9b334a45a8ff 88 }
bogdanm 0:9b334a45a8ff 89 }
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 void port_write(port_t *obj, int value)
bogdanm 0:9b334a45a8ff 92 {
bogdanm 0:9b334a45a8ff 93 if (value) {
bogdanm 0:9b334a45a8ff 94 GPIO_PortOutSet(obj->port, obj->mask);
bogdanm 0:9b334a45a8ff 95 } else {
bogdanm 0:9b334a45a8ff 96 GPIO_PortOutClear(obj->port, obj->mask);
bogdanm 0:9b334a45a8ff 97 }
bogdanm 0:9b334a45a8ff 98 }
bogdanm 0:9b334a45a8ff 99
bogdanm 0:9b334a45a8ff 100 int port_read(port_t *obj)
bogdanm 0:9b334a45a8ff 101 {
bogdanm 0:9b334a45a8ff 102 if (obj->dir == PIN_INPUT) {
bogdanm 0:9b334a45a8ff 103 return (int) (GPIO_PortInGet(obj->port) & obj->mask);
bogdanm 0:9b334a45a8ff 104 } else {
bogdanm 0:9b334a45a8ff 105 return (int) (GPIO_PortOutGet(obj->port) & obj->mask);
bogdanm 0:9b334a45a8ff 106 }
bogdanm 0:9b334a45a8ff 107 }
bogdanm 0:9b334a45a8ff 108
bogdanm 0:9b334a45a8ff 109 #endif