mbed library sources
Dependents: frdm_kl05z_gpio_test
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Diff: targets/hal/TARGET_Freescale/TARGET_K20D5M/pinmap.c
- Revision:
- 68:41613245dfd7
- Child:
- 227:7bd0639b8911
diff -r 78dfdb5b4d9e -r 41613245dfd7 targets/hal/TARGET_Freescale/TARGET_K20D5M/pinmap.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Freescale/TARGET_K20D5M/pinmap.c Thu Dec 26 13:00:06 2013 +0000 @@ -0,0 +1,40 @@ +/* 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 "pinmap.h" +#include "error.h" + +void pin_function(PinName pin, int function) { + if (pin == (PinName)NC) + return; + + 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) { + if (pin == (PinName)NC) { return; } + + __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin); + + // pin pullup bits: [1:0] -> 11 = (0x3) + *pin_pcr = (*pin_pcr & ~0x3) | mode; +}