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targets/TARGET_Freescale/TARGET_K20XX/pinmap.c@178:c26431f84b0d, 2017-11-09 (annotated)
- Committer:
- amithy
- Date:
- Thu Nov 09 22:14:37 2017 +0000
- Revision:
- 178:c26431f84b0d
- Parent:
- 149:156823d33999
test export
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2006-2015 ARM Limited |
<> | 144:ef7eb2e8f9f7 | 3 | * |
<> | 144:ef7eb2e8f9f7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 144:ef7eb2e8f9f7 | 5 | * you may not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 6 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 9 | * |
<> | 144:ef7eb2e8f9f7 | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 144:ef7eb2e8f9f7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 13 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 14 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 15 | */ |
<> | 144:ef7eb2e8f9f7 | 16 | #include "mbed_assert.h" |
<> | 144:ef7eb2e8f9f7 | 17 | #include "pinmap.h" |
<> | 144:ef7eb2e8f9f7 | 18 | |
<> | 144:ef7eb2e8f9f7 | 19 | void pin_function(PinName pin, int function) { |
<> | 144:ef7eb2e8f9f7 | 20 | MBED_ASSERT(pin != (PinName)NC); |
<> | 144:ef7eb2e8f9f7 | 21 | |
<> | 144:ef7eb2e8f9f7 | 22 | uint32_t port_n = (uint32_t)pin >> PORT_SHIFT; |
<> | 144:ef7eb2e8f9f7 | 23 | uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2; |
<> | 144:ef7eb2e8f9f7 | 24 | |
<> | 144:ef7eb2e8f9f7 | 25 | SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n); |
<> | 144:ef7eb2e8f9f7 | 26 | __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n]; |
<> | 144:ef7eb2e8f9f7 | 27 | |
<> | 144:ef7eb2e8f9f7 | 28 | // pin mux bits: [10:8] -> 11100000000 = (0x700) |
<> | 144:ef7eb2e8f9f7 | 29 | *pin_pcr = (*pin_pcr & ~0x700) | (function << 8); |
<> | 144:ef7eb2e8f9f7 | 30 | } |
<> | 144:ef7eb2e8f9f7 | 31 | |
<> | 144:ef7eb2e8f9f7 | 32 | void pin_mode(PinName pin, PinMode mode) { |
<> | 144:ef7eb2e8f9f7 | 33 | MBED_ASSERT(pin != (PinName)NC); |
<> | 144:ef7eb2e8f9f7 | 34 | __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin); |
<> | 144:ef7eb2e8f9f7 | 35 | |
<> | 144:ef7eb2e8f9f7 | 36 | // pin pullup bits: [1:0] -> 11 = (0x3) |
<> | 144:ef7eb2e8f9f7 | 37 | *pin_pcr = (*pin_pcr & ~0x3) | mode; |
<> | 144:ef7eb2e8f9f7 | 38 | } |