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Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/pinmap.c
- Revision:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/pinmap.c Thu Oct 01 15:25:22 2015 +0300 @@ -0,0 +1,63 @@ +/***************************************************************************//** + * @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