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targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/pinmap.c
- Committer:
- bogdanm
- Date:
- 2015-10-01
- Revision:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
File content as of revision 0:9b334a45a8ff:
/***************************************************************************//** * @file pinmap.c ******************************************************************************* * @section License * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> ******************************************************************************* * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. * 2. Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software. * 3. This notice may not be removed or altered from any source distribution. * * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no * obligation to support this Software. Silicon Labs is providing the * Software "AS IS", with no express or implied warranties of any kind, * including, but not limited to, any implied warranties of merchantability * or fitness for any particular purpose or warranties against infringement * of any proprietary rights of a third party. * * Silicon Labs will not be liable for any consequential, incidental, or * special damages, or any other relief, or for any claim by any third party, * arising from your use of this Software. * ******************************************************************************/ #include "pinmap.h" #include "em_gpio.h" #include "em_cmu.h" #include "mbed_assert.h" static int gpio_clock_inited = 0; void pin_function(PinName pin, int function) { //Intentionally left empty. We have repurposed the function field. } void pin_mode(PinName pin, PinMode mode) { MBED_ASSERT((0xFFFFFF00 |pin) != NC); /* Enable GPIO clock if not already done */ if (!gpio_clock_inited) { CMU_ClockEnable(cmuClock_GPIO, true); gpio_clock_inited = 1; } /* Pin and port index encoded in one uint32. * First four bits represent the pin number * The remaining bits represent the port number */ uint32_t pin_number = (uint32_t) pin; int pin_index = (pin_number & 0xF); int port_index = pin_number >> 4; GPIO_PinModeSet(port_index, pin_index, mode & 0xF, GPIO_PinOutGet(port_index, pin_index & 0xF)); } // TODO_LP get pin_mode to be able to store previous settings