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build/efinix/programmer: Minor import changes and upadte copyrights.

This commit is contained in:
Florent Kermarrec 2022-03-28 14:56:35 +02:00
parent ba6d9f0751
commit d214c37b76
1 changed files with 11 additions and 11 deletions
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22
litex/build/efinix/programmer.py
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@ -2,14 +2,13 @@
# This file is part of LiteX.
#
# Copyright (c) 2021 Franck Jullien <franck.jullien@collshade.fr>
# Copyright (c) 2022 Charles-Henri Mousset <ch.mousset@gmail.com>
# SPDX-License-Identifier: BSD-2-Clause
import os
import sys
import time
import subprocess
from time import sleep
import usb.core
import usb.util
from litex.build.generic_programmer import GenericProgrammer
@ -51,6 +50,7 @@ class EfinixAtmelProgrammer:
padding = 0xFF
def __init__(self):
import usb.core
dev = usb.core.find(find_all=False, idVendor=self.vid, idProduct=self.pid)
if not dev:
raise ValueError(f"did not find Atmel USB programmer device with VID{self.vid:04x} PID{self.pid:04x}")
@ -79,17 +79,17 @@ class EfinixAtmelProgrammer:
def _prep_flash(self):
self._usb_w([0x08]) # 'SPI Master'
sleep(0.05)
time.sleep(0.05)
self._usb_w([0x09]) # 'flash_ready'
sleep(0.05)
time.sleep(0.05)
def _prep_load(self):
self._usb_w([0x0B])
sleep(0.001)
time.sleep(0.001)
self._usb_w([0x0C])
sleep(0.002)
time.sleep(0.002)
self._usb_w([0x0D])
sleep(0.01)
time.sleep(0.01)
self._usb_w([0x01] + [self.padding] * 10) # "write some initial junk bytes"
def _finish_load(self):
@ -98,12 +98,12 @@ class EfinixAtmelProgrammer:
def _erase_flash(self):
print("Erasing Flash...")
self._usb_w([0x04])
sleep(self.flash_erase_time)
time.sleep(self.flash_erase_time)
print("done")
def _reload(self):
self._usb_w([0x06] + [self.padding] * 63) # toggle CRESET
sleep(0.01)
time.sleep(0.01)
def _send_packet(self, packet, flash=False):
"""send 63 bytes of data"""
@ -124,7 +124,7 @@ class EfinixAtmelProgrammer:
self._send_packet(packet, flash)
self._usb_w([0x21] + [0xFF] * 63) # 'close connection'
sleep(0.01)
time.sleep(0.01)
print("done")
def add_hex(self, offset, hexfile):