#!/usr/bin/env python3
from litex.tools.litex_client import RemoteClient
rom_base = 0x00000000
dump_size = 0x8000
words_per_packet = 128
wb = RemoteClient()
wb.open()
# # #
print("dumping cpu rom to dump.bin...")
dump = []
for n in range(dump_size // (words_per_packet * 4)):
dump += wb.read(rom_base + n * words_per_packet * 4, words_per_packet)
f = open("dump.bin", "wb")
for v in dump:
f.write(v.to_bytes(4, byteorder="big"))
f.close()
# # #
wb.close()
import matplotlib.pyplot as plt
import pdb
wb = RemoteClient()
wb.open()
ADC_SRAM_BASE = 0x20000000
nsamples = 1024
MAX_SAMPLES = 128
Fs = 50e6
midrange = 2048
if __name__ == '__main__':
remaining_samples = nsamples - MAX_SAMPLES
s = np.uint32(wb.read(ADC_SRAM_BASE, min(MAX_SAMPLES, nsamples)))
while remaining_samples > 0:
nsamples_to_read = min(remaining_samples, MAX_SAMPLES)
s = np.append(s, wb.read(ADC_SRAM_BASE + len(s) * 4, nsamples_to_read))
remaining_samples -= nsamples_to_read
s_a = np.uint16([s_i & 0xFFF for s_i in s])
s_b = np.uint16([s_i >> 16 for s_i in s])
wb.close()
plt.subplot(3, 1, 1)
plt.plot(s_a)
plt.plot(s_b)
plt.subplot(3, 1, 2)
plt.magnitude_spectrum(s_a - midrange, Fs=Fs, scale='dB')