![]() ![]() ![]() ![]() Sketch below based on the above link */ #include #include #include TMRpcm wav #include #define SD_ChipSelectPin 10 static const char wav_1 PROGMEM = "beeps/beep-8" static const char wav_2 PROGMEM = "warning.wav" static const char wav_3 PROGMEM = "verified.wav" static const char wav_4 PROGMEM = "engage.wav" static const char wav_5 PROGMEM = "link. IMPORTANT: Some older versions of the LPC1768 contain a link to a page that does not exist. Double-click on the MBED.HTM link, which should open up a webpage that asks you to create a new mbed account. Uses program memory to store filenames instead of ram when playing many different wav files. Open up a Windows Explorer (Windows) or Finder (OS X) and navigate to the mbed drive. NOTE Mbed OS and waveplayer library are modified from their original to use the waveplayer library written for Mbed OS 2. This project is a fork of Mbed OS file system exmaple. Since the display requires a complex sequence of commands, mutual exclusion on the display is required and a mutex synchronization lock must be used in each thread before it can access the display.Heyy, same was to me, i just changed few things, just try to use pin 9 for speaker and also use PROGMEM in this code, it will play more clearlier and moreover for me actually playing :D /* Example sketch using progmem to store wav filenames. This example demonstrates how to use waveplayer library in Mbed OS 5.11. GitHub - kevinxu523/MBed-RPG-Game: A RPG game, called CurseHunt with the MBed microcontroller, 3 buttons, an mLCD, pwm Speaker, and accelerometer. Adafruit WavePlayer Library Helper library for wrangling Wave files Author Adafruit Website Category Data Processing License Unknown Library Type Contributed Architectures samd Parse and prepare wave files to play from filesystems. with the small NXP LPC1768 board under the Internet based mbed IDE. Two threads put something on the uLCD display. Implement an own WAVE player (based on a sample I found on the Internet) in C++ (C. Make sure not to use the new more complex Mbed 5 RTOS (use the mbed 2.0 RTOS with links in this lab). ( Part 2 65% ) Next, use the mbed RTOS to run at least four threads. Samuel Gedaly Guenoun and Samuel Gedaly Guenoun ADDED PROJECT FILES. Read the LED lighting effects wiki & code examples for an introduction to using the RTOS and threads using LED effects as examples. The RTOS can make writing the code easier since tasks can be designed independently. So once things get a bit more complex, an RTOS may be needed. The RTOS also provides the needed synchronization primitives when threads share global variables or I/O devices. With an RTOS, the scheduler controls the timer and makes it possible to run multiple threads. The mbed RTOS uses the timer to provide its 1 ms. A periodic timer interrupt can be used to time slice the processors among various tasks and such hardware is used in an OS scheduler for time slicing among tasks. Ticker is similar to Timeout, but Timeout only works one time. Description : Starts the wave player application. com/waveplayer-using-stm32-discovery/Check out. case and ignore bool block // so as to maintain compat with Mbed Serial. The audio out jack can be connected to a set of PC speakers for more volume. I couldnt find a working I2S example anywhere in the MBED community for any. It reads a wave file from a USB flash drive, and outputs audio to the tiny onboard speaker (very low volume) and the analog audio out jack. ![]() It is build upon the nRF52840 microcontroller and runs on Arm Mbed OS. It is based on the earlier mbed cookbook wave player code. Adafruit WavePlayer Library: Helper library for wrangling Wave files. Ticker uses a hardware timer on mbed to periodically generate an interrupt that triggers a function to run. If you have purchased the mbed Starter Kit or the LPC1768, open up the LPC1768 box, and you will find a pinout. Here is a wave player demo setup for the mbed application board. API) is Ticker used to control the audio sample rate. ECE 4180 Lab 3 – Using the timer and the mbed RTOS Section A Due Date: Oct 12 odd groups – Oct 13 even groups Section B Due Date: Oct 13 odd groups – Oct 14 even groups Names:_Sect _ _Sect_ Item Lab Demo Extra Credit Ticker blinking 4 LEDs n/a Mbed RTOS - LCD, LED, & Sound Effect Threads n/a Hardware Breakpoints Offline in Compiler n/a Semaphore instead of LCD mutex lock 1% Sonar with timers and interrupts 1% 5-way Tactile Switch Control 2% Touch Switch Control 1% Smart Phone App Control 1% RTOS thread scheduling using priorities & yield 1% Light sensor to switch lighting modes 2% Image or Video display on LCD 2-4% Microphone Control Input 1% High Quality YouTube video clip 1% TA Signoff: _ Score:_ ( Part 1 25% ) Blink mbed’s four built-in LEDs at different rates of 1, 2, 3, and 4 seconds using the Ticker function (no wait() allowed!). In the waveplayer class code used, a timer producing periodic interrupts (mbed. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |