Ultrasound pulse-echo pHAT (lit3rick) - up5k fpgaDesigned by kelu124 in France
The up5k lit3rick open hardware ultrasound pulse echo board What's the hardware? Lattice: up5k. Onboard RAM for 64k points saves. Onboard flash : W25X10CLSNIG Pulser : HV7361GA-G: adaptable to +-1...Read More…
An example from the py_fpga folder, summarized. Check the visualisation of the acquisitions below.
fpga = py_fpga(i2c_bus=i2c_bus, py_audio=p, spi_bus=spi)
fpga.set_waveform(pdelay=1, PHV_time=11, PnHV_time=1, PDamp_time=100)
hiloVal = 1 # High or low.
dacVal = 250 # on a range from 0 to 512
startVal,nPtsDAC = 250, 16
for i in range(nPtsDAC):
fpga.set_dac(int(startVal + (i*(455-startVal))/nPtsDAC), mem=i)
dataI2S = fpga.read_fft_through_i2s(10)
dataSPI = fpga.read_signal_through_spi()
time.sleep(3/1000.0) # normally takes ~800us to compute 8192pts
dataFFT = fpga.read_fft_through_spi()
Copyright Kelu124 (email@example.com) 2020.
This project is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE.
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