hai frnds!
i am doing project on phone remote control of home appliances using microcontroller 8031.
we are in a problem of interfacing dtmf with the microcontroller.
A part of the project involves decoding the input no thro' telephone (one at a time).totally we need to get four digits sequentially & store in mc memory (we use std high input which indicates the presennce of a data).the std high stays high for 4 milliseconds. But the mc is so fast thst it takes the data at the rate of 1 microseconds. so instead of taking 4 different datas it takes the same data very fast & stores the same data in memory.
giving some delay is also not helpful here.
give anybody either give an idea of clearing away this prob or send me the program .
bye...shanmugam.
bsvl_rect@yahoo.com
i am doing project on phone remote control of home appliances using microcontroller 8031.
we are in a problem of interfacing dtmf with the microcontroller.
A part of the project involves decoding the input no thro' telephone (one at a time).totally we need to get four digits sequentially & store in mc memory (we use std high input which indicates the presennce of a data).the std high stays high for 4 milliseconds. But the mc is so fast thst it takes the data at the rate of 1 microseconds. so instead of taking 4 different datas it takes the same data very fast & stores the same data in memory.
giving some delay is also not helpful here.
give anybody either give an idea of clearing away this prob or send me the program .
bye...shanmugam.
bsvl_rect@yahoo.com
