Marco Mayer / Mbed OS Queue

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mbed-os/targets/TARGET_NXP/TARGET_LPC13XX/pinmap.c@0:6bf0743ece18, 2020-03-28 (annotated)

Committer:
demayer
Date:
Sat Mar 28 15:28:19 2020 +0000
Revision:
0:6bf0743ece18
IMU Thread with an event-queue running parallel to handle tasks like a 5 times blinking LED. Button with interrupt detected.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
demayer 0:6bf0743ece18 1 /* mbed Microcontroller Library
demayer 0:6bf0743ece18 2 * Copyright (c) 2006-2013 ARM Limited
demayer 0:6bf0743ece18 3 *
demayer 0:6bf0743ece18 4 * Licensed under the Apache License, Version 2.0 (the "License");
demayer 0:6bf0743ece18 5 * you may not use this file except in compliance with the License.
demayer 0:6bf0743ece18 6 * You may obtain a copy of the License at
demayer 0:6bf0743ece18 7 *
demayer 0:6bf0743ece18 8 * http://www.apache.org/licenses/LICENSE-2.0
demayer 0:6bf0743ece18 9 *
demayer 0:6bf0743ece18 10 * Unless required by applicable law or agreed to in writing, software
demayer 0:6bf0743ece18 11 * distributed under the License is distributed on an "AS IS" BASIS,
demayer 0:6bf0743ece18 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
demayer 0:6bf0743ece18 13 * See the License for the specific language governing permissions and
demayer 0:6bf0743ece18 14 * limitations under the License.
demayer 0:6bf0743ece18 15 */
demayer 0:6bf0743ece18 16 #include "mbed_assert.h"
demayer 0:6bf0743ece18 17 #include "pinmap.h"
demayer 0:6bf0743ece18 18 #include "mbed_error.h"
demayer 0:6bf0743ece18 19
demayer 0:6bf0743ece18 20 #define LPC_IOCON0_BASE (LPC_IOCON_BASE)
demayer 0:6bf0743ece18 21 #define LPC_IOCON1_BASE (LPC_IOCON_BASE + 0x60)
demayer 0:6bf0743ece18 22
demayer 0:6bf0743ece18 23 void pin_function(PinName pin, int function) {
demayer 0:6bf0743ece18 24 MBED_ASSERT(pin != (PinName)NC);
demayer 0:6bf0743ece18 25
demayer 0:6bf0743ece18 26 uint32_t pin_number = (uint32_t)pin;
demayer 0:6bf0743ece18 27
demayer 0:6bf0743ece18 28 __IO uint32_t *reg = (pin_number < 32) ?
demayer 0:6bf0743ece18 29 (__IO uint32_t*)(LPC_IOCON0_BASE + 4 * pin_number) :
demayer 0:6bf0743ece18 30 (__IO uint32_t*)(LPC_IOCON1_BASE + 4 * (pin_number - 32));
demayer 0:6bf0743ece18 31
demayer 0:6bf0743ece18 32 // pin function bits: [2:0] -> 111 = (0x7)
demayer 0:6bf0743ece18 33 *reg = (*reg & ~0x7) | (function & 0x7);
demayer 0:6bf0743ece18 34 }
demayer 0:6bf0743ece18 35
demayer 0:6bf0743ece18 36 void pin_mode(PinName pin, PinMode mode) {
demayer 0:6bf0743ece18 37 MBED_ASSERT(pin != (PinName)NC);
demayer 0:6bf0743ece18 38
demayer 0:6bf0743ece18 39 uint32_t pin_number = (uint32_t)pin;
demayer 0:6bf0743ece18 40 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
demayer 0:6bf0743ece18 41
demayer 0:6bf0743ece18 42 __IO uint32_t *reg = (pin_number < 32) ?
demayer 0:6bf0743ece18 43 (__IO uint32_t*)(LPC_IOCON0_BASE + 4 * pin_number) :
demayer 0:6bf0743ece18 44 (__IO uint32_t*)(LPC_IOCON1_BASE + 4 * (pin_number - 32));
demayer 0:6bf0743ece18 45 uint32_t tmp = *reg;
demayer 0:6bf0743ece18 46
demayer 0:6bf0743ece18 47 // pin mode bits: [4:3] -> 11000 = (0x3 << 3)
demayer 0:6bf0743ece18 48 tmp &= ~(0x3 << 3);
demayer 0:6bf0743ece18 49 tmp |= (mode & 0x3) << 3;
demayer 0:6bf0743ece18 50
demayer 0:6bf0743ece18 51 // drain
demayer 0:6bf0743ece18 52 tmp &= ~(0x1 << 10);
demayer 0:6bf0743ece18 53 tmp |= drain << 10;
demayer 0:6bf0743ece18 54
demayer 0:6bf0743ece18 55 *reg = tmp;
demayer 0:6bf0743ece18 56 }