Paul Paterson / mbed-src-CanNucleoF0

mbed library sources, include can_api for nucleo-f091rc

Dependents:   CanNucleoF0_example

Fork of mbed-src 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