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
- Committer:
- mbed_official
- Date:
- 2016-01-15
- Revision:
- 50:a417edff4437
- Parent:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
File content as of revision 50:a417edff4437:
/***************************************************************************//** * @file port_api.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 "device.h" #if DEVICE_PORTOUT #include "port_api.h" #include "pinmap.h" #include "gpio_api.h" #include "em_gpio.h" #include "em_cmu.h" #define PORT_NUM_PINS 16 PinName port_pin(PortName port, int pin_n) { return (PinName) (pin_n | port << 4); // Encode pin and port number in one uint32 } void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { obj->mask = mask; obj->port = port; obj->dir = dir; port_dir(obj, obj->dir); } void port_mode(port_t *obj, PinMode mode) { /* Set mode for pins given by mask */ uint32_t pin; for (pin = 0; pin < PORT_NUM_PINS; pin++) { if (obj->mask & (1 << pin)) { pin_mode(port_pin(obj->port, pin), mode); } } } void port_dir(port_t *obj, PinDirection dir) { obj->dir = dir; /* Set default pin mode for pins given by mask */ switch (dir) { case PIN_INPUT: port_mode(obj, Input); break; case PIN_OUTPUT: port_mode(obj, PushPull); break; } } void port_write(port_t *obj, int value) { GPIO_PortOutSetVal(obj->port, value, obj->mask); } int port_read(port_t *obj) { if (obj->dir == PIN_INPUT) { return (int) (GPIO_PortInGet(obj->port) & obj->mask); } else { return (int) (GPIO_PortOutGet(obj->port) & obj->mask); } } #endif