Emre Eken / Mbed OS MAX30001 SYS EvKit

MAX30001-MAX32630FTHR SYS EvKit

Dependencies:   USBDevice max32630fthr

Max30001 EVKIT Summary

The MAX30001 EVKIT SYS-MBED Evaluation System (EV System) is used to evaluates the MAX30001 sensor, which is an ECG (electrocardiogram), biopotential and bioimpedance analog front end solution for wearable applications. The full EV System consists of the MAX32630FTHR Development board (DEV board) and MAX30001 sensor board and the evaluation software. The EvKit features EKG, PACE, RtoR (R-peak timing), Bio-Z, and raw data logging.

The MAX30001 EVKIT SYS-MBED evaluation system is assembled, tested and contains the necessary circuitry and connections to evaluate the MAX30001 sensor.

When evaluated as an EV System, the MAX32630FTHR board provides the necessary logic rails, master clock, SPI, USB-to-Serial interfaces that are needed to evaluate the MAX30001 sensor board. MAX32630FTHR can be used as an independent development platform. Another wiki page for that platform is available here.

Communication with the DEV board is facilitated by Windows 7, Windows 8 and Windows 10 compatible software that provides a simple and intuitive graphical user interface (GUI).

HSP/RpcServer/RpcFifo.cpp@2:e2ce56bb0d2e, 2018-04-12 (annotated)

Committer:
Emre.Eken
Date:
Thu Apr 12 13:47:56 2018 +0300
Revision:
2:e2ce56bb0d2e
Parent:
0:8e4630a71eb1 
main.cpp path is changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 1 /*******************************************************************************
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 3 *
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 4 * Permission is hereby granted, free of charge, to any person obtaining a
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 5 * copy of this software and associated documentation files (the "Software"),
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 6 * to deal in the Software without restriction, including without limitation
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 8 * and/or sell copies of the Software, and to permit persons to whom the
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 9 * Software is furnished to do so, subject to the following conditions:
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 10 *
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 11 * The above copyright notice and this permission notice shall be included
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 12 * in all copies or substantial portions of the Software.
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 13 *
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 20 * OTHER DEALINGS IN THE SOFTWARE.
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 21 *
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 22 * Except as contained in this notice, the name of Maxim Integrated
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 24 * Products, Inc. Branding Policy.
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 25 *
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 26 * The mere transfer of this software does not imply any licenses
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 27 * of trade secrets, proprietary technology, copyrights, patents,
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 28 * trademarks, maskwork rights, or any other form of intellectual
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 30 * ownership rights.
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 31 *******************************************************************************
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 32 */
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 33 #include "mbed.h"
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 34 #include "RpcFifo.h"
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 35
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 36 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 37 void fifo_init(fifo_t *fifo, void *mem, unsigned int length) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 38 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 39 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 40
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 41 fifo->rindex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 42 fifo->windex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 43 fifo->data = mem;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 44 fifo->length = length;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 45
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 46 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 47 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 48
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 49 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 50 int fifo_put8(fifo_t *fifo, uint8_t element) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 51 // Check if FIFO is full
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 52 if ((fifo->windex == (fifo->rindex - 1)) ||
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 53 ((fifo->rindex == 0) && (fifo->windex == (fifo->length - 1)))) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 54 return -1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 55 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 56
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 57 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 58 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 59
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 60 // Put data into FIFO
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 61 ((uint8_t *)(fifo->data))[fifo->windex] = element;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 62
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 63 // Increment pointer
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 64 fifo->windex++;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 65 if (fifo->windex == fifo->length) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 66 fifo->windex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 67 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 68
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 69 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 70
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 71 return 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 72 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 73
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 74 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 75 int fifo_get8(fifo_t *fifo, uint8_t *element) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 76 // Check if FIFO is empty
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 77 if (fifo->rindex == fifo->windex)
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 78 return -1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 79
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 80 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 81 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 82
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 83 // Get data from FIFO
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 84 *element = ((uint8_t *)(fifo->data))[fifo->rindex];
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 85
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 86 // Increment pointer
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 87 fifo->rindex++;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 88 if (fifo->rindex == fifo->length) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 89 fifo->rindex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 90 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 91
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 92 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 93
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 94 return 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 95 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 96
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 97 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 98 int fifo_put16(fifo_t *fifo, uint16_t element) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 99 // Check if FIFO is full
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 100 if ((fifo->windex == (fifo->rindex - 1)) ||
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 101 ((fifo->rindex == 0) && (fifo->windex == (fifo->length - 1)))) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 102 return -1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 103 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 104
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 105 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 106 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 107
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 108 // Put data into FIFO
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 109 ((uint16_t *)(fifo->data))[fifo->windex] = element;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 110
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 111 // Increment pointer
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 112 fifo->windex++;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 113 if (fifo->windex == fifo->length) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 114 fifo->windex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 115 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 116
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 117 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 118
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 119 return 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 120 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 121
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 122 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 123 int fifo_get16(fifo_t *fifo, uint16_t *element) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 124 // Check if FIFO is empty
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 125 if (fifo->rindex == fifo->windex)
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 126 return -1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 127
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 128 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 129 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 130
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 131 // Get data from FIFO
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 132 *element = ((uint16_t *)(fifo->data))[fifo->rindex];
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 133
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 134 // Increment pointer
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 135 fifo->rindex++;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 136 if (fifo->rindex == fifo->length) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 137 fifo->rindex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 138 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 139
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 140 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 141
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 142 return 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 143 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 144
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 145 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 146 int fifo_put32(fifo_t *fifo, uint32_t element) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 147 // Check if FIFO is full
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 148 if ((fifo->windex == (fifo->rindex - 1)) ||
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 149 ((fifo->rindex == 0) && (fifo->windex == (fifo->length - 1)))) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 150 return -1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 151 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 152
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 153 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 154 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 155
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 156 // Put data into FIFO
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 157 ((uint32_t *)(fifo->data))[fifo->windex] = element;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 158
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 159 // Increment pointer
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 160 fifo->windex++;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 161 if (fifo->windex == fifo->length) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 162 fifo->windex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 163 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 164
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 165 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 166
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 167 return 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 168 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 169
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 170 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 171 int fifo_get32(fifo_t *fifo, uint32_t *element) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 172 // Check if FIFO is empty
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 173 if (fifo->rindex == fifo->windex)
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 174 return -1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 175
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 176 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 177 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 178
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 179 // Get data from FIFO
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 180 *element = ((uint32_t *)(fifo->data))[fifo->rindex];
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 181
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 182 // Increment pointer
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 183 fifo->rindex++;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 184 if (fifo->rindex == fifo->length) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 185 fifo->rindex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 186 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 187
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 188 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 189
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 190 return 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 191 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 192 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 193 void fifo_clear(fifo_t *fifo) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 194 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 195 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 196
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 197 fifo->rindex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 198 fifo->windex = 0;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 199
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 200 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 201 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 202
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 203 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 204 int fifo_empty(fifo_t *fifo) { return (fifo->rindex == fifo->windex); }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 205
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 206 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 207 int fifo_full(fifo_t *fifo) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 208 int retval;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 209
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 210 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 211 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 212 retval = ((fifo->windex == (fifo->rindex - 1)) ||
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 213 ((fifo->rindex == 0) && (fifo->windex == (fifo->length - 1))));
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 214 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 215
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 216 return retval;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 217 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 218
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 219 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 220 unsigned int fifo_level(fifo_t *fifo) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 221 uint16_t value;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 222
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 223 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 224 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 225
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 226 if (fifo->windex >= fifo->rindex) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 227 value = fifo->windex - fifo->rindex;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 228 } else {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 229 value = fifo->length - fifo->rindex + fifo->windex;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 230 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 231
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 232 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 233
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 234 return value;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 235 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 236
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 237 /****************************************************************************/
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 238 unsigned int fifo_remaining(fifo_t *fifo) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 239 uint16_t value;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 240
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 241 // atomic FIFO access
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 242 __disable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 243
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 244 if (fifo->rindex > fifo->windex) {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 245 value = fifo->rindex - fifo->windex - 1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 246 } else {
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 247 value = fifo->length - fifo->windex + fifo->rindex - 1;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 248 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 249
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 250 __enable_irq();
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 251
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 252 return value;
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 253 }
Emre.Eken@IST-LT-35101.maxim-ic.internal 0:8e4630a71eb1 254