Mouse code for the MacroRat
mbed-dev/targets/TARGET_ARM_SSG/TARGET_BEETLE/gpio_api.c
- Committer:
- sahilmgandhi
- Date:
- 2017-05-14
- Revision:
- 18:6a4db94011d3
File content as of revision 18:6a4db94011d3:
/* mbed Microcontroller Library * Copyright (c) 2015 ARM Limited * * 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 "gpio_api.h" #include "pinmap.h" // function to enable the GPIO pin uint32_t gpio_set(PinName pin) { uint32_t pin_value = 0; if(pin <= 15) { pin_value = pin; } else if (pin >= 16 && pin <= 31) { pin_value = pin-16; } else if (pin >= 1001 && pin <= 1004) { /* Emulated LEDs */ return (1); } pin_function(pin, 0); return (1 << pin_value); } //function to initialise the gpio pin // this links the board control bits for each pin // with the object created for the pin void gpio_init(gpio_t *obj, PinName pin) { if (pin == NC) { return; } else { int pin_value = 0; obj->pin = pin; if (pin <=15) { pin_value = pin; } else if (pin >= 16 && pin <= 31) { pin_value = pin-16; } else if (pin >= 1001 && pin <= 1004) { /* Emulated LEDs */ return; } obj->mask = 0x1 << pin_value; obj->pin_number = pin; if (pin <=15) { obj->reg_data = &CMSDK_GPIO0->DATAOUT; obj->reg_in = &CMSDK_GPIO0->DATA; obj->reg_dir = &CMSDK_GPIO0->OUTENABLESET; obj->reg_dirclr = &CMSDK_GPIO0->OUTENABLECLR; } else if (pin >= 16 && pin <= 31) { obj->reg_data = &CMSDK_GPIO1->DATAOUT; obj->reg_in = &CMSDK_GPIO1->DATA; obj->reg_dir = &CMSDK_GPIO1->OUTENABLESET; obj->reg_dirclr = &CMSDK_GPIO1->OUTENABLECLR; } } } void gpio_mode(gpio_t *obj, PinMode mode) { pin_mode(obj->pin, mode); } void gpio_dir(gpio_t *obj, PinDirection direction) { if(obj->pin >= 0 && obj->pin <= 31) { switch (direction) { case PIN_INPUT : *obj->reg_dirclr = obj->mask; break; case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break; } } else { return; } } int gpio_is_connected(const gpio_t *obj){ if(obj->pin != (PinName)NC){ return 1; } else { return 0; } }