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MCP3001 A/D interface with 8051 mcu in c pro.

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arun_9998

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how i convert 10 bit data to voltage
if recived 10 bit data is 07CE vrf is 4.096:-(
 

arun_9998 said:
how i convert 10 bit data to voltage
if recived 10 bit data is 07CE vrf is 4.096:-(
Click to expand...

it's a math problem.

for example,the range for 10bit data is 0~3ff(hex),
if ADC data 3ff equals to 4096(depends on your hardware definition),
then you can calc that
1'b1=4096/(2^10)=4096/1024=4mV,
that is,
10'h1 = 4mV,10'h2=2*4mV=8mV...10'h1024=1024*4mV=4096

so you can calc the voltage for "07CE"!
 
sorry,i didnot notice the number,

maybe write mistake
 

It could be a triping mistake as you say :wink: The other possibility is that the SPI is not configured correctly - MSB/LSB first etc.

Keith.
 

can u post me c source code for spi
thonks
 

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