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soc/tools/remove/comm_uart: limit write bursts to 8 32bits words

This commit is contained in:
Florent Kermarrec 2016-05-30 16:16:05 +02:00
parent 6a35337a09
commit f193873bb8
1 changed files with 11 additions and 6 deletions
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13
litex/soc/tools/remote/comm_uart.py
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@ -55,9 +55,14 @@ class CommUART:
def write(self, addr, data):
data = data if isinstance(data, list) else [data]
length = len(data)
self._write([self.msg_type["write"], length])
self._write(list((addr//4).to_bytes(4, byteorder="big")))
for i, value in enumerate(data):
offset = 0
while length:
size = min(length, 8)
self._write([self.msg_type["write"], size])
self._write(list(((addr+offset)//4).to_bytes(4, byteorder="big")))
for i, value in enumerate(data[offset:offset+size]):
self._write(list(value.to_bytes(4, byteorder="big")))
if self.debug:
print("write {:08x} @ {:08x}".format(value, addr + 4*i))
print("write {:08x} @ {:08x}".format(value, addr + offset, 4*i))
offset += size
length -= size