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/* mbed Microcontroller Library
* Copyright (c) 2006-2015 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 "mbed_assert.h"
#include "pinmap.h"
void pin_function(PinName pin, int function) {
MBED_ASSERT(pin != (PinName)NC);
uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2;
SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
__IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
// pin mux bits: [10:8] -> 11100000000 = (0x700)
*pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
}
void pin_mode(PinName pin, PinMode mode) {
MBED_ASSERT(pin != (PinName)NC);
__IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
// pin pullup bits: [1:0] -> 11 = (0x3)
*pin_pcr = (*pin_pcr & ~0x3) | mode;
}
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