Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NXP/TARGET_LPC15XX/gpio_api.c
- Revision:
- 18:6a4db94011d3
diff -r f713758f6238 -r 6a4db94011d3 mbed-dev/targets/TARGET_NXP/TARGET_LPC15XX/gpio_api.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NXP/TARGET_LPC15XX/gpio_api.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,66 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2014 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" + +static int gpio_enabled = 0; + +static void gpio_enable(void) { + gpio_enabled = 1; + + /* Enable AHB clock to the GPIO0/1/2 and IOCON domain. */ + LPC_SYSCON->SYSAHBCLKCTRL0 |= (0xFUL << 13); +} + +uint32_t gpio_set(PinName pin) { + MBED_ASSERT(pin != (PinName)NC); + if (!gpio_enabled) + gpio_enable(); + + return (1UL << ((int)pin & 0x1f)); +} + +void gpio_init(gpio_t *obj, PinName pin) { + obj->pin = pin; + if (pin == (PinName)NC) + return; + + obj->mask = gpio_set(pin); + + unsigned int port = (unsigned int)(pin >> 5); + + obj->reg_set = &LPC_GPIO_PORT->SET[port]; + obj->reg_clr = &LPC_GPIO_PORT->CLR[port]; + obj->reg_in = &LPC_GPIO_PORT->PIN[port]; + obj->reg_dir = &LPC_GPIO_PORT->DIR[port]; +} + +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); + switch (direction) { + case PIN_INPUT : + *obj->reg_dir &= ~obj->mask; + break; + case PIN_OUTPUT: + *obj->reg_dir |= obj->mask; + break; + } +}