John Mitchell / DMSupport

Subdirectory provided by Embedded Artists

Dependencies:   DM_FATFileSystem DM_HttpServer DM_USBHost EthernetInterface USBDevice mbed-rpc mbed-rtos mbed-src

Dependents:   lpc4088_displaymodule_hello_world_Sept_2018

Fork of DMSupport by Embedded Artists

DMBoard.cpp@9:a33326afd686, 2014-12-11 (annotated)

Committer:
embeddedartists
Date:
Thu Dec 11 18:23:07 2014 +0000
Revision:
9:a33326afd686
Parent:
5:c77fdb6e3438
Child:
10:1ac4b213f0f7
Updated documentation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:6b68dac0d986 1 /*
embeddedartists 0:6b68dac0d986 2 * Copyright 2014 Embedded Artists AB
embeddedartists 0:6b68dac0d986 3 *
embeddedartists 0:6b68dac0d986 4 * Licensed under the Apache License, Version 2.0 (the "License");
embeddedartists 0:6b68dac0d986 5 * you may not use this file except in compliance with the License.
embeddedartists 0:6b68dac0d986 6 * You may obtain a copy of the License at
embeddedartists 0:6b68dac0d986 7 *
embeddedartists 0:6b68dac0d986 8 * http://www.apache.org/licenses/LICENSE-2.0
embeddedartists 0:6b68dac0d986 9 *
embeddedartists 0:6b68dac0d986 10 * Unless required by applicable law or agreed to in writing, software
embeddedartists 0:6b68dac0d986 11 * distributed under the License is distributed on an "AS IS" BASIS,
embeddedartists 0:6b68dac0d986 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
embeddedartists 0:6b68dac0d986 13 * See the License for the specific language governing permissions and
embeddedartists 0:6b68dac0d986 14 * limitations under the License.
embeddedartists 0:6b68dac0d986 15 */
embeddedartists 0:6b68dac0d986 16
embeddedartists 0:6b68dac0d986 17 #include "mbed.h"
embeddedartists 0:6b68dac0d986 18 #include "DMBoard.h"
embeddedartists 0:6b68dac0d986 19 #include "InternalEEPROM.h"
embeddedartists 0:6b68dac0d986 20
embeddedartists 0:6b68dac0d986 21 #if defined(DM_BOARD_USE_TOUCH)
embeddedartists 0:6b68dac0d986 22 #include "AR1021.h"
embeddedartists 0:6b68dac0d986 23 #endif
embeddedartists 0:6b68dac0d986 24
embeddedartists 4:6fdcdf7aff8d 25 #if defined(DM_BOARD_ENABLE_MEASSURING_PINS)
embeddedartists 4:6fdcdf7aff8d 26 #include "meas.h"
embeddedartists 4:6fdcdf7aff8d 27 #endif
embeddedartists 4:6fdcdf7aff8d 28
embeddedartists 5:c77fdb6e3438 29
embeddedartists 5:c77fdb6e3438 30 /******************************************************************************
embeddedartists 5:c77fdb6e3438 31 * Configuration Compatibility Control
embeddedartists 5:c77fdb6e3438 32 *****************************************************************************/
embeddedartists 5:c77fdb6e3438 33
embeddedartists 5:c77fdb6e3438 34 #if defined(DM_BOARD_USE_USB_DEVICE) && defined(DM_BOARD_USE_USB_HOST)
embeddedartists 5:c77fdb6e3438 35 #error The hardware supports either USB Device or USB Host - not both at the same time
embeddedartists 5:c77fdb6e3438 36 #endif
embeddedartists 5:c77fdb6e3438 37
embeddedartists 0:6b68dac0d986 38 /******************************************************************************
embeddedartists 0:6b68dac0d986 39 * Defines and typedefs
embeddedartists 0:6b68dac0d986 40 *****************************************************************************/
embeddedartists 0:6b68dac0d986 41
embeddedartists 2:887c6b45e7fa 42 #if defined(DM_BOARD_DISABLE_STANDARD_PRINTF)
embeddedartists 2:887c6b45e7fa 43 class DevNull : public Stream {
embeddedartists 2:887c6b45e7fa 44
embeddedartists 2:887c6b45e7fa 45 public:
embeddedartists 2:887c6b45e7fa 46 DevNull(const char *name=NULL) : Stream(name) {}
embeddedartists 2:887c6b45e7fa 47
embeddedartists 2:887c6b45e7fa 48 protected:
embeddedartists 2:887c6b45e7fa 49 virtual int _getc() {return 0;}
embeddedartists 2:887c6b45e7fa 50 virtual int _putc(int c) {return c;}
embeddedartists 2:887c6b45e7fa 51 };
embeddedartists 2:887c6b45e7fa 52
embeddedartists 2:887c6b45e7fa 53 static DevNull null("null");
embeddedartists 2:887c6b45e7fa 54 #endif
embeddedartists 2:887c6b45e7fa 55
embeddedartists 0:6b68dac0d986 56 /******************************************************************************
embeddedartists 0:6b68dac0d986 57 * Local variables
embeddedartists 0:6b68dac0d986 58 *****************************************************************************/
embeddedartists 0:6b68dac0d986 59
embeddedartists 0:6b68dac0d986 60 /******************************************************************************
embeddedartists 0:6b68dac0d986 61 * Private Functions
embeddedartists 0:6b68dac0d986 62 *****************************************************************************/
embeddedartists 0:6b68dac0d986 63
embeddedartists 0:6b68dac0d986 64 DMBoard::DMBoard() :
embeddedartists 0:6b68dac0d986 65 _initialized(false),
embeddedartists 0:6b68dac0d986 66 #if defined(DM_BOARD_USE_MCI_FS)
embeddedartists 0:6b68dac0d986 67 _mcifs("mci", P4_16),
embeddedartists 0:6b68dac0d986 68 #endif
embeddedartists 0:6b68dac0d986 69 #if defined(DM_BOARD_USE_QSPI_FS)
embeddedartists 0:6b68dac0d986 70 _qspifs("qspi"),
embeddedartists 0:6b68dac0d986 71 #endif
embeddedartists 0:6b68dac0d986 72 #if defined(DM_BOARD_USE_TOUCH)
embeddedartists 0:6b68dac0d986 73 _touch(NULL),
embeddedartists 0:6b68dac0d986 74 #endif
embeddedartists 0:6b68dac0d986 75 _buzzer(P1_5),
embeddedartists 0:6b68dac0d986 76 _button(p23),
embeddedartists 0:6b68dac0d986 77 _led1(LED1),
embeddedartists 0:6b68dac0d986 78 _led2(LED2),
embeddedartists 0:6b68dac0d986 79 _led3(LED3),
embeddedartists 0:6b68dac0d986 80 _led4(LED4)
embeddedartists 0:6b68dac0d986 81 {
embeddedartists 0:6b68dac0d986 82 }
embeddedartists 0:6b68dac0d986 83
embeddedartists 0:6b68dac0d986 84 DMBoard::~DMBoard()
embeddedartists 0:6b68dac0d986 85 {
embeddedartists 2:887c6b45e7fa 86 #if defined(DM_BOARD_USE_TOUCH)
embeddedartists 0:6b68dac0d986 87 if (_touch != NULL) {
embeddedartists 0:6b68dac0d986 88 delete _touch;
embeddedartists 0:6b68dac0d986 89 _touch = NULL;
embeddedartists 0:6b68dac0d986 90 }
embeddedartists 2:887c6b45e7fa 91 #endif
embeddedartists 0:6b68dac0d986 92 }
embeddedartists 0:6b68dac0d986 93
embeddedartists 0:6b68dac0d986 94 DMBoard::BoardError DMBoard::readConfiguration()
embeddedartists 0:6b68dac0d986 95 {
embeddedartists 0:6b68dac0d986 96 InternalEEPROM mem;
embeddedartists 0:6b68dac0d986 97 mem.init();
embeddedartists 0:6b68dac0d986 98
embeddedartists 0:6b68dac0d986 99 uint8_t* buff = (uint8_t*)malloc(mem.memorySize());
embeddedartists 0:6b68dac0d986 100 mem.read(0, 0, buff, mem.memorySize());
embeddedartists 0:6b68dac0d986 101 mem.powerDown();
embeddedartists 0:6b68dac0d986 102 #if 0
embeddedartists 0:6b68dac0d986 103 uint8_t* p = buff;
embeddedartists 2:887c6b45e7fa 104 _logger.printf("\n-------\nBEFORE:\n-------\n");
embeddedartists 0:6b68dac0d986 105 for (int i = 0; i < 63; i++) {
embeddedartists 0:6b68dac0d986 106 for (int j = 0; j < 4; j++) {
embeddedartists 2:887c6b45e7fa 107 _logger.printf("0x%04x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
embeddedartists 0:6b68dac0d986 108 i,
embeddedartists 0:6b68dac0d986 109 p[0],p[1],p[2],p[3],p[4],p[5],p[6],p[7],
embeddedartists 0:6b68dac0d986 110 p[8],p[9],p[10],p[11],p[12],p[13],p[14],p[15]);
embeddedartists 0:6b68dac0d986 111 p += 16;
embeddedartists 0:6b68dac0d986 112 }
embeddedartists 2:887c6b45e7fa 113 _logger.printf("\n");
embeddedartists 0:6b68dac0d986 114 }
embeddedartists 0:6b68dac0d986 115
embeddedartists 0:6b68dac0d986 116 // find first non-zero page and write to that
embeddedartists 0:6b68dac0d986 117 for (int page = 0; page < mem.numPages(); page++) {
embeddedartists 0:6b68dac0d986 118 bool zeroPage = true;
embeddedartists 0:6b68dac0d986 119 for (int i = 0; i < mem.pageSize(); i++) {
embeddedartists 0:6b68dac0d986 120 if (buff[i + page*mem.pageSize()] != 0) {
embeddedartists 0:6b68dac0d986 121 zeroPage = false;
embeddedartists 0:6b68dac0d986 122 break;
embeddedartists 0:6b68dac0d986 123 }
embeddedartists 0:6b68dac0d986 124 }
embeddedartists 0:6b68dac0d986 125 if (zeroPage) {
embeddedartists 2:887c6b45e7fa 126 _logger.printf("Will fill page 0x%04x (%d) with 0x00..0x3f\n", page, page);
embeddedartists 0:6b68dac0d986 127 p = buff;
embeddedartists 0:6b68dac0d986 128 for (int i = 0; i < mem.pageSize(); i++) {
embeddedartists 0:6b68dac0d986 129 *p++ = i;
embeddedartists 0:6b68dac0d986 130 }
embeddedartists 0:6b68dac0d986 131 mem.write(page, 0, buff, mem.pageSize());
embeddedartists 0:6b68dac0d986 132 memset(buff, 0, mem.memorySize());
embeddedartists 0:6b68dac0d986 133 mem.read(0, 0, buff, mem.memorySize());
embeddedartists 0:6b68dac0d986 134 p = buff;
embeddedartists 2:887c6b45e7fa 135 _logger.printf("\n-------\nAFTER:\n-------\n");
embeddedartists 0:6b68dac0d986 136 for (int i = 0; i < 63; i++) {
embeddedartists 0:6b68dac0d986 137 for (int j = 0; j < 4; j++) {
embeddedartists 2:887c6b45e7fa 138 _logger.printf("0x%04x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
embeddedartists 0:6b68dac0d986 139 i,
embeddedartists 0:6b68dac0d986 140 p[0],p[1],p[2],p[3],p[4],p[5],p[6],p[7],
embeddedartists 0:6b68dac0d986 141 p[8],p[9],p[10],p[11],p[12],p[13],p[14],p[15]);
embeddedartists 0:6b68dac0d986 142 p += 16;
embeddedartists 0:6b68dac0d986 143 }
embeddedartists 2:887c6b45e7fa 144 _logger.printf("\n");
embeddedartists 0:6b68dac0d986 145 }
embeddedartists 0:6b68dac0d986 146 break;
embeddedartists 0:6b68dac0d986 147 }
embeddedartists 0:6b68dac0d986 148 }
embeddedartists 0:6b68dac0d986 149 #endif
embeddedartists 0:6b68dac0d986 150 return Ok;
embeddedartists 0:6b68dac0d986 151 }
embeddedartists 0:6b68dac0d986 152
embeddedartists 0:6b68dac0d986 153 #if defined(DM_BOARD_USE_DISPLAY)
embeddedartists 0:6b68dac0d986 154 DMBoard::BoardError DMBoard::readDisplayConfiguration(uint8_t** data, uint32_t* size)
embeddedartists 0:6b68dac0d986 155 {
embeddedartists 0:6b68dac0d986 156 uint32_t allocsize = 17*sizeof(uint32_t);
embeddedartists 0:6b68dac0d986 157 uint32_t* stuff = (uint32_t*)malloc(allocsize);
embeddedartists 0:6b68dac0d986 158 if (stuff == NULL) {
embeddedartists 0:6b68dac0d986 159 return MemoryError;
embeddedartists 0:6b68dac0d986 160 }
embeddedartists 0:6b68dac0d986 161 #if defined(DM_BOARD_USE_4_3_DISPLAY_TMP)
embeddedartists 0:6b68dac0d986 162 // Temporary setup, for a 4.3" display
embeddedartists 0:6b68dac0d986 163
embeddedartists 0:6b68dac0d986 164 stuff[ 0] = 40, //horizontalBackPorch == HSYNC back porch
embeddedartists 0:6b68dac0d986 165 stuff[ 1] = 5, //horizontalFrontPorch == HSYNC front porch
embeddedartists 0:6b68dac0d986 166 stuff[ 2] = 2, //hsync == HSYNC width
embeddedartists 0:6b68dac0d986 167 stuff[ 3] = 480, //width == Horizontal active area
embeddedartists 0:6b68dac0d986 168 stuff[ 4] = 8, //verticalBackPorch == VSYNC back porch
embeddedartists 0:6b68dac0d986 169 stuff[ 5] = 8, //verticalFrontPorch == VSYNC front porch
embeddedartists 0:6b68dac0d986 170 stuff[ 6] = 2, //vsync == VSYNC width
embeddedartists 0:6b68dac0d986 171 stuff[ 7] = 272, //height == Vertical display area
embeddedartists 0:6b68dac0d986 172 stuff[ 8] = false,
embeddedartists 0:6b68dac0d986 173 stuff[ 9] = false,
embeddedartists 0:6b68dac0d986 174 stuff[10] = true,
embeddedartists 0:6b68dac0d986 175 stuff[11] = true,
embeddedartists 0:6b68dac0d986 176 stuff[12] = 1,
embeddedartists 0:6b68dac0d986 177 stuff[13] = Display::Resolution_16bit_rgb565;
embeddedartists 0:6b68dac0d986 178 stuff[14] = 9000000, //clock or 0 for external
embeddedartists 0:6b68dac0d986 179 stuff[15] = 0, //LcdController::Tft,
embeddedartists 0:6b68dac0d986 180 stuff[16] = false;
embeddedartists 0:6b68dac0d986 181 #else
embeddedartists 0:6b68dac0d986 182 // Temporary setup, for a 5" rogin display
embeddedartists 0:6b68dac0d986 183
embeddedartists 0:6b68dac0d986 184 stuff[ 0] = 46, //horizontalBackPorch == HSYNC back porch
embeddedartists 0:6b68dac0d986 185 stuff[ 1] = 20, //horizontalFrontPorch == HSYNC front porch
embeddedartists 0:6b68dac0d986 186 stuff[ 2] = 2, //hsync == HSYNC width
embeddedartists 0:6b68dac0d986 187 stuff[ 3] = 800, //width == Horizontal active area
embeddedartists 0:6b68dac0d986 188 stuff[ 4] = 23, //verticalBackPorch == VSYNC back porch
embeddedartists 0:6b68dac0d986 189 stuff[ 5] = 10, //verticalFrontPorch == VSYNC front porch
embeddedartists 0:6b68dac0d986 190 stuff[ 6] = 3, //vsync == VSYNC width
embeddedartists 0:6b68dac0d986 191 stuff[ 7] = 480, //height == Vertical display area
embeddedartists 0:6b68dac0d986 192 stuff[ 8] = false,
embeddedartists 0:6b68dac0d986 193 stuff[ 9] = false,
embeddedartists 0:6b68dac0d986 194 stuff[10] = true,
embeddedartists 0:6b68dac0d986 195 stuff[11] = true,
embeddedartists 0:6b68dac0d986 196 stuff[12] = 1,
embeddedartists 0:6b68dac0d986 197 stuff[13] = Display::Resolution_16bit_rgb565;
embeddedartists 0:6b68dac0d986 198 stuff[14] = 30000000, //clock or 0 for external
embeddedartists 0:6b68dac0d986 199 stuff[15] = 0, //LcdController::Tft,
embeddedartists 0:6b68dac0d986 200 stuff[16] = false;
embeddedartists 0:6b68dac0d986 201 #endif
embeddedartists 0:6b68dac0d986 202 *data = (uint8_t*)&(stuff[0]);
embeddedartists 0:6b68dac0d986 203 *size = allocsize;
embeddedartists 0:6b68dac0d986 204
embeddedartists 0:6b68dac0d986 205 return Ok;
embeddedartists 0:6b68dac0d986 206 }
embeddedartists 0:6b68dac0d986 207 #endif
embeddedartists 0:6b68dac0d986 208
embeddedartists 0:6b68dac0d986 209 /******************************************************************************
embeddedartists 0:6b68dac0d986 210 * Public Functions
embeddedartists 0:6b68dac0d986 211 *****************************************************************************/
embeddedartists 0:6b68dac0d986 212
embeddedartists 0:6b68dac0d986 213 DMBoard::BoardError DMBoard::init()
embeddedartists 0:6b68dac0d986 214 {
embeddedartists 0:6b68dac0d986 215 BoardError err = Ok;
embeddedartists 0:6b68dac0d986 216 if (!_initialized) {
embeddedartists 0:6b68dac0d986 217 do {
embeddedartists 0:6b68dac0d986 218 // Turn off the buzzer
embeddedartists 0:6b68dac0d986 219 _buzzer.period_ms(1);
embeddedartists 0:6b68dac0d986 220 _buzzer = 0;
embeddedartists 0:6b68dac0d986 221
embeddedartists 0:6b68dac0d986 222 // Make sure the button is configured correctly
embeddedartists 0:6b68dac0d986 223 _button.mode(PullUp);
embeddedartists 0:6b68dac0d986 224
embeddedartists 0:6b68dac0d986 225 // Turn off all LEDs
embeddedartists 0:6b68dac0d986 226 _led1 = 1;
embeddedartists 0:6b68dac0d986 227 _led2 = 1;
embeddedartists 0:6b68dac0d986 228 _led3 = 0;
embeddedartists 0:6b68dac0d986 229 _led4 = 0;
embeddedartists 0:6b68dac0d986 230
embeddedartists 2:887c6b45e7fa 231 // Make sure that the logger is always initialized even if
embeddedartists 2:887c6b45e7fa 232 // other initialization tasks fail
embeddedartists 2:887c6b45e7fa 233 _logger.init();
embeddedartists 4:6fdcdf7aff8d 234
embeddedartists 4:6fdcdf7aff8d 235 #if defined(DM_BOARD_ENABLE_MEASSURING_PINS)
embeddedartists 4:6fdcdf7aff8d 236 _INTERNAL_INIT_MEAS();
embeddedartists 4:6fdcdf7aff8d 237 #endif
embeddedartists 2:887c6b45e7fa 238
embeddedartists 2:887c6b45e7fa 239 #if defined(DM_BOARD_DISABLE_STANDARD_PRINTF)
embeddedartists 2:887c6b45e7fa 240 // Kill all ouput of calls to printf() so that there is no
embeddedartists 2:887c6b45e7fa 241 // simultaneous calls into the non-thread-safe standard libraries.
embeddedartists 2:887c6b45e7fa 242 // User code should use the RtosLogger anyway.
embeddedartists 2:887c6b45e7fa 243 freopen("/null", "w", stdout);
embeddedartists 2:887c6b45e7fa 244 #endif
embeddedartists 2:887c6b45e7fa 245
embeddedartists 3:2fa7755f2cef 246 #if defined(DM_BOARD_USE_QSPI) || defined(DM_BOARD_USE_QSPI_FS)
embeddedartists 0:6b68dac0d986 247 if (SPIFI::instance().init() != SPIFI::Ok) {
embeddedartists 0:6b68dac0d986 248 err = SpifiError;
embeddedartists 0:6b68dac0d986 249 break;
embeddedartists 0:6b68dac0d986 250 }
embeddedartists 0:6b68dac0d986 251 #endif
embeddedartists 0:6b68dac0d986 252
embeddedartists 0:6b68dac0d986 253 readConfiguration();
embeddedartists 0:6b68dac0d986 254
embeddedartists 0:6b68dac0d986 255 #if defined(DM_BOARD_USE_DISPLAY)
embeddedartists 0:6b68dac0d986 256 if (Display::instance().init() != Display::Ok) {
embeddedartists 0:6b68dac0d986 257 err = DisplayError;
embeddedartists 0:6b68dac0d986 258 break;
embeddedartists 0:6b68dac0d986 259 }
embeddedartists 0:6b68dac0d986 260 #endif
embeddedartists 0:6b68dac0d986 261
embeddedartists 0:6b68dac0d986 262 #if defined(DM_BOARD_USE_TOUCH)
embeddedartists 0:6b68dac0d986 263 //if (... configuration says AR1021...) {
embeddedartists 0:6b68dac0d986 264 _touch = new AR1021(P2_27, P2_26, P2_22, P2_23, P2_25);
embeddedartists 4:6fdcdf7aff8d 265 int att;
embeddedartists 4:6fdcdf7aff8d 266 for (att = 1; att <= 3; att++) {
embeddedartists 4:6fdcdf7aff8d 267 if (_touch->init(Display::instance().width(), Display::instance().height())) {
embeddedartists 4:6fdcdf7aff8d 268 break;
embeddedartists 4:6fdcdf7aff8d 269 }
embeddedartists 4:6fdcdf7aff8d 270 _logger.printf("Failed to init touch, trying again...\n");
embeddedartists 4:6fdcdf7aff8d 271 wait_ms(500);
embeddedartists 4:6fdcdf7aff8d 272 }
embeddedartists 4:6fdcdf7aff8d 273 if (att > 3) {
embeddedartists 0:6b68dac0d986 274 err = TouchError;
embeddedartists 0:6b68dac0d986 275 break;
embeddedartists 0:6b68dac0d986 276 }
embeddedartists 0:6b68dac0d986 277 //}
embeddedartists 0:6b68dac0d986 278 #endif
embeddedartists 0:6b68dac0d986 279
embeddedartists 0:6b68dac0d986 280
embeddedartists 0:6b68dac0d986 281 _initialized = true;
embeddedartists 0:6b68dac0d986 282 } while(0);
embeddedartists 0:6b68dac0d986 283 }
embeddedartists 0:6b68dac0d986 284 return err;
embeddedartists 0:6b68dac0d986 285 }
embeddedartists 0:6b68dac0d986 286
embeddedartists 2:887c6b45e7fa 287 void DMBoard::setLED(Leds led, bool on)
embeddedartists 0:6b68dac0d986 288 {
embeddedartists 0:6b68dac0d986 289 switch(led) {
embeddedartists 2:887c6b45e7fa 290 case Led1:
embeddedartists 0:6b68dac0d986 291 _led1 = (on ? 0 : 1);
embeddedartists 0:6b68dac0d986 292 break;
embeddedartists 2:887c6b45e7fa 293 case Led2:
embeddedartists 0:6b68dac0d986 294 _led2 = (on ? 0 : 1);
embeddedartists 0:6b68dac0d986 295 break;
embeddedartists 2:887c6b45e7fa 296 case Led3:
embeddedartists 0:6b68dac0d986 297 _led3 = (on ? 1 : 0);
embeddedartists 0:6b68dac0d986 298 break;
embeddedartists 2:887c6b45e7fa 299 case Led4:
embeddedartists 0:6b68dac0d986 300 _led4 = (on ? 1 : 0);
embeddedartists 0:6b68dac0d986 301 break;
embeddedartists 0:6b68dac0d986 302 }
embeddedartists 0:6b68dac0d986 303 }
embeddedartists 0:6b68dac0d986 304
embeddedartists 5:c77fdb6e3438 305 void DMBoard::buzzer(int frequency, int duration_ms)
embeddedartists 0:6b68dac0d986 306 {
embeddedartists 5:c77fdb6e3438 307 if (frequency <= 0) {
embeddedartists 5:c77fdb6e3438 308 _buzzer = 0;
embeddedartists 5:c77fdb6e3438 309 } else {
embeddedartists 5:c77fdb6e3438 310 _buzzer.period_us(1000000/frequency);
embeddedartists 5:c77fdb6e3438 311 _buzzer = 0.5;
embeddedartists 0:6b68dac0d986 312 }
embeddedartists 5:c77fdb6e3438 313 if (duration_ms > 0) {
embeddedartists 5:c77fdb6e3438 314 Thread::wait(duration_ms);
embeddedartists 5:c77fdb6e3438 315 _buzzer = 0;
embeddedartists 5:c77fdb6e3438 316 }
embeddedartists 0:6b68dac0d986 317 }
embeddedartists 0:6b68dac0d986 318
embeddedartists 0:6b68dac0d986 319 bool DMBoard::buttonPressed()
embeddedartists 0:6b68dac0d986 320 {
embeddedartists 0:6b68dac0d986 321 return _button.read() == 0;
embeddedartists 0:6b68dac0d986 322 }