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quicker upload not relying on luck #18

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merged 2 commits into from
Jul 26, 2023
Merged

quicker upload not relying on luck #18

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5fc5a0b
quicker upload not relying on luck of getting exactly FPGA string in …
Jul 26, 2023
df8e7cb
fix mistake
Jul 26, 2023
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10 changes: 5 additions & 5 deletions fpga.py
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Original file line number Diff line number Diff line change
Expand Up @@ -76,15 +76,15 @@ def usb_tx(title, data):
else:
print("ESP32 already in FPGA download mode, connecting...")

while True:
data = None
requested_len = 4 + 4 - 1 # 2 times "FPGA" if we are unlucky and "PGAFPGA" got transmitted
data = bytearray()

while (len(data) < requested_len) or (data.find(b'FPGA') == -1):
try:
data = bytes(esp32_ep_in.read(32))
data += bytes(esp32_ep_in.read(32))
except Exception as e:
#print(e)
pass
if (data == b"FPGA"):
break

esp32_ep_out.write(b'FPGA')

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