Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_Silicon_Labs/TARGET_EFM32/port_api.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_Silicon_Labs/TARGET_EFM32/port_api.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,89 @@ +/***************************************************************************//** + * @file port_api.c + ******************************************************************************* + * @section License + * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> + ******************************************************************************* + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ******************************************************************************/ + +#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