Aravind Vadali / mbed-src-AV

mbed.h library with any bug fixes AV finds.

Dependents:   micromouse4_encoder_testing PID_Test Lab1_Test WorkingPID ... more

targets/hal/TARGET_NXP/TARGET_LPC13XX/pinmap.c@1:ebce2ad32f95, 2015-11-02 (annotated)

Committer:
aravindsv
Date:
Mon Nov 02 03:07:12 2015 +0000
Revision:
1:ebce2ad32f95
Parent:
0:ba7650f404af 
Changed the RCC timeout value to 500 ms, so total code startup time before program starts running is ~1s. Hopefully no side-effects from lower startup timeouts

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aravindsv 0:ba7650f404af 1 /* mbed Microcontroller Library
aravindsv 0:ba7650f404af 2 * Copyright (c) 2006-2013 ARM Limited
aravindsv 0:ba7650f404af 3 *
aravindsv 0:ba7650f404af 4 * Licensed under the Apache License, Version 2.0 (the "License");
aravindsv 0:ba7650f404af 5 * you may not use this file except in compliance with the License.
aravindsv 0:ba7650f404af 6 * You may obtain a copy of the License at
aravindsv 0:ba7650f404af 7 *
aravindsv 0:ba7650f404af 8 * http://www.apache.org/licenses/LICENSE-2.0
aravindsv 0:ba7650f404af 9 *
aravindsv 0:ba7650f404af 10 * Unless required by applicable law or agreed to in writing, software
aravindsv 0:ba7650f404af 11 * distributed under the License is distributed on an "AS IS" BASIS,
aravindsv 0:ba7650f404af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
aravindsv 0:ba7650f404af 13 * See the License for the specific language governing permissions and
aravindsv 0:ba7650f404af 14 * limitations under the License.
aravindsv 0:ba7650f404af 15 */
aravindsv 0:ba7650f404af 16 #include "mbed_assert.h"
aravindsv 0:ba7650f404af 17 #include "pinmap.h"
aravindsv 0:ba7650f404af 18 #include "mbed_error.h"
aravindsv 0:ba7650f404af 19
aravindsv 0:ba7650f404af 20 #define LPC_IOCON0_BASE (LPC_IOCON_BASE)
aravindsv 0:ba7650f404af 21 #define LPC_IOCON1_BASE (LPC_IOCON_BASE + 0x60)
aravindsv 0:ba7650f404af 22
aravindsv 0:ba7650f404af 23 void pin_function(PinName pin, int function) {
aravindsv 0:ba7650f404af 24 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 25
aravindsv 0:ba7650f404af 26 uint32_t pin_number = (uint32_t)pin;
aravindsv 0:ba7650f404af 27
aravindsv 0:ba7650f404af 28 __IO uint32_t *reg = (pin_number < 32) ?
aravindsv 0:ba7650f404af 29 (__IO uint32_t*)(LPC_IOCON0_BASE + 4 * pin_number) :
aravindsv 0:ba7650f404af 30 (__IO uint32_t*)(LPC_IOCON1_BASE + 4 * (pin_number - 32));
aravindsv 0:ba7650f404af 31
aravindsv 0:ba7650f404af 32 // pin function bits: [2:0] -> 111 = (0x7)
aravindsv 0:ba7650f404af 33 *reg = (*reg & ~0x7) | (function & 0x7);
aravindsv 0:ba7650f404af 34 }
aravindsv 0:ba7650f404af 35
aravindsv 0:ba7650f404af 36 void pin_mode(PinName pin, PinMode mode) {
aravindsv 0:ba7650f404af 37 MBED_ASSERT(pin != (PinName)NC);
aravindsv 0:ba7650f404af 38
aravindsv 0:ba7650f404af 39 uint32_t pin_number = (uint32_t)pin;
aravindsv 0:ba7650f404af 40 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
aravindsv 0:ba7650f404af 41
aravindsv 0:ba7650f404af 42 __IO uint32_t *reg = (pin_number < 32) ?
aravindsv 0:ba7650f404af 43 (__IO uint32_t*)(LPC_IOCON0_BASE + 4 * pin_number) :
aravindsv 0:ba7650f404af 44 (__IO uint32_t*)(LPC_IOCON1_BASE + 4 * (pin_number - 32));
aravindsv 0:ba7650f404af 45 uint32_t tmp = *reg;
aravindsv 0:ba7650f404af 46
aravindsv 0:ba7650f404af 47 // pin mode bits: [4:3] -> 11000 = (0x3 << 3)
aravindsv 0:ba7650f404af 48 tmp &= ~(0x3 << 3);
aravindsv 0:ba7650f404af 49 tmp |= (mode & 0x3) << 3;
aravindsv 0:ba7650f404af 50
aravindsv 0:ba7650f404af 51 // drain
aravindsv 0:ba7650f404af 52 tmp &= ~(0x1 << 10);
aravindsv 0:ba7650f404af 53 tmp |= drain << 10;
aravindsv 0:ba7650f404af 54
aravindsv 0:ba7650f404af 55 *reg = tmp;
aravindsv 0:ba7650f404af 56 }