John Karatka / mbed

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-dev by mbed official

targets/TARGET_ublox/TARGET_HI2110/hi2110_init.c@182:57724642e740, 2018-02-16 (annotated)

Committer:
AnnaBridge
Date:
Fri Feb 16 16:09:33 2018 +0000
Revision:
182:57724642e740
Parent:
150:02e0a0aed4ec 
mbed-dev library. Release version 159.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 150:02e0a0aed4ec 1 /* mbed Microcontroller Library
<> 150:02e0a0aed4ec 2 * Copyright (c) 2016 u-blox
<> 150:02e0a0aed4ec 3 *
<> 150:02e0a0aed4ec 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 150:02e0a0aed4ec 5 * you may not use this file except in compliance with the License.
<> 150:02e0a0aed4ec 6 * You may obtain a copy of the License at
<> 150:02e0a0aed4ec 7 *
<> 150:02e0a0aed4ec 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 150:02e0a0aed4ec 9 *
<> 150:02e0a0aed4ec 10 * Unless required by applicable law or agreed to in writing, software
<> 150:02e0a0aed4ec 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 150:02e0a0aed4ec 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 150:02e0a0aed4ec 13 * See the License for the specific language governing permissions and
<> 150:02e0a0aed4ec 14 * limitations under the License.
<> 150:02e0a0aed4ec 15 */
<> 150:02e0a0aed4ec 16
<> 150:02e0a0aed4ec 17 #include <stdint.h>
<> 150:02e0a0aed4ec 18 #include <stdbool.h>
<> 150:02e0a0aed4ec 19 #include "mbed_assert.h"
<> 150:02e0a0aed4ec 20 #include "cmsis.h"
<> 150:02e0a0aed4ec 21 #include "hi2110_init.h"
<> 150:02e0a0aed4ec 22
<> 150:02e0a0aed4ec 23 /* ----------------------------------------------------------------
<> 150:02e0a0aed4ec 24 * MACROS
<> 150:02e0a0aed4ec 25 * ----------------------------------------------------------------*/
<> 150:02e0a0aed4ec 26
<> 150:02e0a0aed4ec 27 /* ----------------------------------------------------------------
<> 150:02e0a0aed4ec 28 * FUNCTION PROTOTYPES
<> 150:02e0a0aed4ec 29 * ----------------------------------------------------------------*/
<> 150:02e0a0aed4ec 30
<> 150:02e0a0aed4ec 31 static uint8_t get_owner(uint8_t pin);
<> 150:02e0a0aed4ec 32
<> 150:02e0a0aed4ec 33 /* ----------------------------------------------------------------
<> 150:02e0a0aed4ec 34 * NON-API FUNCTIONS
<> 150:02e0a0aed4ec 35 * ----------------------------------------------------------------*/
<> 150:02e0a0aed4ec 36
<> 150:02e0a0aed4ec 37 /* Determine which core owns a given pin
<> 150:02e0a0aed4ec 38 * 0: None
<> 150:02e0a0aed4ec 39 * 1: security core
<> 150:02e0a0aed4ec 40 * 2: protocol core
<> 150:02e0a0aed4ec 41 * 3: apps core */
<> 150:02e0a0aed4ec 42 static uint8_t get_owner(uint8_t pin)
<> 150:02e0a0aed4ec 43 {
<> 150:02e0a0aed4ec 44 uint8_t value;
<> 150:02e0a0aed4ec 45 uint8_t pio_owner_shift = (pin & 0x0F) << 1;
<> 150:02e0a0aed4ec 46 volatile uint32_t * pio_owner_reg = (&PIO_OWNER0 + (pin >> 4));
<> 150:02e0a0aed4ec 47
<> 150:02e0a0aed4ec 48 value = 0x03 & (*pio_owner_reg >> pio_owner_shift);
<> 150:02e0a0aed4ec 49
<> 150:02e0a0aed4ec 50 return value;
<> 150:02e0a0aed4ec 51 }
<> 150:02e0a0aed4ec 52
<> 150:02e0a0aed4ec 53 /* ----------------------------------------------------------------
<> 150:02e0a0aed4ec 54 * MBED API FUNCTIONS
<> 150:02e0a0aed4ec 55 * ----------------------------------------------------------------*/
<> 150:02e0a0aed4ec 56
<> 150:02e0a0aed4ec 57 void HI2110_init(void)
<> 150:02e0a0aed4ec 58 {
<> 150:02e0a0aed4ec 59 __attribute__ ((unused)) uint8_t owner[20];
<> 150:02e0a0aed4ec 60
<> 150:02e0a0aed4ec 61 /* This purely for diagnostics to see who owns which PIO pin.
<> 150:02e0a0aed4ec 62 * Put a break-point at the end of this function and take a look
<> 150:02e0a0aed4ec 63 * at the array.
<> 150:02e0a0aed4ec 64 * Any items marked as 1 or 2 belong to the security or protocol
<> 150:02e0a0aed4ec 65 * cores. Otherwise they are up for grabs. */
<> 150:02e0a0aed4ec 66 for (uint8_t x = 0; x < 20; x++) {
<> 150:02e0a0aed4ec 67 owner[x] = get_owner(x);
<> 150:02e0a0aed4ec 68 }
<> 150:02e0a0aed4ec 69 }