mbed library sources: Modified to operate FRDM-KL25Z at 48MHz from internal 32kHz oscillator (nothing else changed).
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The only file that changed is: mbed-src-FLL48/targets/cmsis/TARGET_Freescale/TARGET_KL25Z/system_MKL25Z4.h
Diff: targets/hal/TARGET_Freescale/TARGET_KL05Z/gpio_api.c
- Revision:
- 20:4263a77256ae
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Freescale/TARGET_KL05Z/gpio_api.c Tue Sep 10 15:14:19 2013 +0300 @@ -0,0 +1,64 @@ +/* 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" + +uint32_t gpio_set(PinName pin) { + pin_function(pin, 1); + return 1 << ((pin & 0x7F) >> 2); // 1 << pin number +} + +void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) { + if (pin == (uint32_t)NC) { + return; + } + + obj->pin = pin; + obj->mask = gpio_set(pin); + + uint32_t port = (uint32_t)pin >> PORT_SHIFT; + + FGPIO_Type *reg = (FGPIO_Type *)(FPTA_BASE + port * 0x40); + obj->reg_set = ®->PSOR; + obj->reg_clr = ®->PCOR; + obj->reg_in = ®->PDIR; + obj->reg_dir = ®->PDDR; + + gpio_dir(obj, direction); + switch (direction) { + case PIN_OUTPUT: + pin_mode(pin, PullNone); + break; + case PIN_INPUT : + pin_mode(pin, PullUp); //down not avail + 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; + } +}