Team DIANA / mbed-src

I don't know

Dependents:   MX106-finaltest

Fork of mbed-src by mbed official

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/pinmap.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 pinmap.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 627:4fa1328d9c60 30
mbed_official 525:c320967f86b9 31 #include "pinmap.h"
mbed_official 525:c320967f86b9 32 #include "em_gpio.h"
mbed_official 525:c320967f86b9 33 #include "em_cmu.h"
mbed_official 525:c320967f86b9 34 #include "mbed_assert.h"
mbed_official 525:c320967f86b9 35
mbed_official 525:c320967f86b9 36 static int gpio_clock_inited = 0;
mbed_official 525:c320967f86b9 37
mbed_official 525:c320967f86b9 38 void pin_function(PinName pin, int function)
mbed_official 525:c320967f86b9 39 {
mbed_official 525:c320967f86b9 40 //Intentionally left empty. We have repurposed the function field.
mbed_official 525:c320967f86b9 41 }
mbed_official 525:c320967f86b9 42
mbed_official 525:c320967f86b9 43 void pin_mode(PinName pin, PinMode mode)
mbed_official 525:c320967f86b9 44 {
mbed_official 627:4fa1328d9c60 45 MBED_ASSERT((0xFFFFFF00 |pin) != NC);
mbed_official 525:c320967f86b9 46
mbed_official 525:c320967f86b9 47 /* Enable GPIO clock if not already done */
mbed_official 548:1abac31e188e 48 if (!gpio_clock_inited) {
mbed_official 548:1abac31e188e 49 CMU_ClockEnable(cmuClock_GPIO, true);
mbed_official 548:1abac31e188e 50 gpio_clock_inited = 1;
mbed_official 548:1abac31e188e 51 }
mbed_official 525:c320967f86b9 52
mbed_official 525:c320967f86b9 53 /* Pin and port index encoded in one uint32.
mbed_official 525:c320967f86b9 54 * First four bits represent the pin number
mbed_official 525:c320967f86b9 55 * The remaining bits represent the port number */
mbed_official 525:c320967f86b9 56 uint32_t pin_number = (uint32_t) pin;
mbed_official 525:c320967f86b9 57 int pin_index = (pin_number & 0xF);
mbed_official 525:c320967f86b9 58 int port_index = pin_number >> 4;
mbed_official 525:c320967f86b9 59
mbed_official 525:c320967f86b9 60 GPIO_PinModeSet(port_index, pin_index, mode & 0xF, GPIO_PinOutGet(port_index, pin_index & 0xF));
mbed_official 525:c320967f86b9 61 }
mbed_official 525:c320967f86b9 62
mbed_official 525:c320967f86b9 63 // TODO_LP get pin_mode to be able to store previous settings