Hi,
I am working on TIMAC. I am using MSP430F5438 experimenter board and CC2520 trans receiver.
I am sending a sine wave signal from transmitter and reconstructing the digital signal on receiver side on pc by sending the data through UART.
I have taken following settngs:
System Clock: 12MHz
ADC Sampling rate: 5791Hz
UART Baud Rate: 460800
Number of data bytes per packet : 2
Wait period between two packets: 6ms
On python to perform fft I have taken timestamp as 0.0048sec ( means 208.33Hz sampling frequency)
I am getting good signal upto 30Hz.
My doubt is that all these parameters which I have set although serve my purpose but I am not able to determine a relation between them.
For eg. I should have taken timestamp( inverse of sampling frequency) on python as either 5791Hz or according to transmission rate as 333.33Hz but I am getting wrong frequency so to get the peak at correct position I took the timestamp as 208.33Hz.
Please can anyone suggest me where I am going wrong?
Thanks