mbed library sources: Modified to operate FRDM-KL25Z at 48MHz from internal 32kHz oscillator (nothing else changed).
Fork of mbed-src by
The only file that changed is: mbed-src-FLL48/targets/cmsis/TARGET_Freescale/TARGET_KL25Z/system_MKL25Z4.h
Diff: targets/hal/TARGET_NXP/TARGET_LPC81X/gpio_api.c
- Revision:
- 20:4263a77256ae
- Parent:
- 19:398f4c622e1b
- Child:
- 21:67d3158c7b56
--- a/targets/hal/TARGET_NXP/TARGET_LPC81X/gpio_api.c Mon Aug 19 18:17:02 2013 +0300 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,69 +0,0 @@ -/* 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 "gpio_api.h" -#include "pinmap.h" - -static int gpio_enabled = 0; -static void gpio_enable(void) { - gpio_enabled = 1; - - /* Enable AHB clock to the GPIO domain. */ - LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6); - - /* Peripheral reset control to GPIO and GPIO INT, a "1" bring it out of reset. */ - LPC_SYSCON->PRESETCTRL &= ~(0x1<<10); - LPC_SYSCON->PRESETCTRL |= (0x1<<10); -} - -uint32_t gpio_set(PinName pin) { - int f = 0; - - if (!gpio_enabled) - gpio_enable(); - - pin_function(pin, f); - - return (1 << ((int)pin & 0x1F)); -} - -void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) { - if(pin == NC) return; - - obj->pin = pin; - obj->mask = gpio_set(pin); - - obj->reg_set = &LPC_GPIO_PORT->SET0; - obj->reg_clr = &LPC_GPIO_PORT->CLR0; - obj->reg_in = &LPC_GPIO_PORT->PIN0; - obj->reg_dir = &LPC_GPIO_PORT->DIR0; - - gpio_dir(obj, direction); - switch (direction) { - case PIN_OUTPUT: pin_mode(pin, PullNone); break; - case PIN_INPUT : pin_mode(pin, PullDown); break; - } -} - -void gpio_mode(gpio_t *obj, PinMode mode) { - pin_mode(obj->pin, mode); -} - -void gpio_dir(gpio_t *obj, PinDirection direction) { - switch (direction) { - case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break; - case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break; - } -}