Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NXP/TARGET_LPC11XX_11CXX/gpio_api.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NXP/TARGET_LPC11XX_11CXX/gpio_api.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,66 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 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 "mbed_assert.h" +#include "gpio_api.h" +#include "pinmap.h" +#include "reserved_pins.h" + +static const PinName reserved_pins[] = TARGET_RESERVED_PINS; + +uint32_t gpio_set(PinName pin) { + MBED_ASSERT(pin != (PinName)NC); + // PIO default value of following ports are not same as others + unsigned i; + int f = 0; + + for (i = 0; i < sizeof(reserved_pins) / sizeof(PinName); i ++) { + if (pin == reserved_pins[i]) { + f = 1; + break; + } + } + pin_function(pin, f); + return ((pin & 0x0F00) >> 8); +} + +void gpio_init(gpio_t *obj, PinName pin) { + obj->pin = pin; + if (pin == (PinName)NC) + return; + + LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (((pin & 0xF000) >> PORT_SHIFT) * 0x10000))); + + obj->reg_mask_read = &port_reg->MASKED_ACCESS[1 << gpio_set(pin)]; + obj->reg_dir = &port_reg->DIR; + obj->reg_write = &port_reg->DATA; +} + +void gpio_mode(gpio_t *obj, PinMode mode) { + pin_mode(obj->pin, mode); +} + +void gpio_dir(gpio_t *obj, PinDirection direction) { + MBED_ASSERT(obj->pin != (PinName)NC); + int pin_number = ((obj->pin & 0x0F00) >> 8); + switch (direction) { + case PIN_INPUT : + *obj->reg_dir &= ~(1 << pin_number); + break; + case PIN_OUTPUT: + *obj->reg_dir |= (1 << pin_number); + break; + } +}