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MSP430 Ultra-Low Power 16-bit Microcontroller Forum
Real Time Audio Application using Ez430-2500
I’m trying to develop a real time audio application using the demo kit ez430-2500 (msp430f2274/cc2500).I have no problem (delay) using the embedded ADC10 and then communicate with CC2500 through SPI.I’m having problems with the receiving routine,(handshake, preamble, CRC) its taking up to 5 milliseconds to receive new information.
On my program I’m using an external DAC from texas (TCL5615) trough SPI also, so i have to get the new info, buffering on the msp430, and then send the info to the DAC, losing connectivity with CC2500 while I’m sending the information to the DAC.
As I take 5 milliseconds to read a new info, my frequency sample is 200Hz, so the maximum frequency I can digitalize is 100hz …this is not good enough for an audio application.
I´m new on MSP430..so I have a few questions for you:
-Is there any way to develop a routine taking 250 microseconds, to prepared the CC2500, get a new frame, and sending to the MSP430 using SPI?
-Is it possible to use MSP430F2274 for a real time audio application, or a better solution is to use the MSP430FG4618?
Many thanks in advance, and a have a good day,
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