Hi,
I’m trying to implement the I2C and SPI protocols in a FPGA to manage the SpO2 and ECG FE boards (TMDXMDKPO8328 and ADS1298R ECG FE).
First, I’ve tried to deal with the SpO2, so I have read the documentation and implemented all the signals and constraints as explained. Despite of this, I cannot communicate with the FE board and the LEDs of the probe don’t light up.
Due to this, I connected the FE board to a TMS320C5515 DSP, downloaded the TI test code, and proceeded to measure the different signals and constraints to compare with my own ones.
At this point, I was wondering why they are so different and the time constraints of the DSP are not the same to the ones explained in the datasheets. Moreover, I don’t know why the SpO2 FE board works with the DSP but not with my implementation following the documentation.
I don’t know what I am doing wrong and where is the mistake, but I expected that the DSP will follow the constraints and serve as guide for my development.
How can I light up the LEDs? Is there any mistake in the datasheet constraints? Have you got any diagram of how the signals have to be? Is there any kind of handshaking between the devices to establish the communications?
Thank you for your help.
