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proxyclient: handle baud rate switching properly for non-Glasgow UARTs

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2021-02-03 03:51:41 +09:00
parent 96d133e854
commit 053f2edbc3
2 changed files with 19 additions and 8 deletions
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12
proxyclient/proxy.py
View file

@ -190,8 +190,10 @@ class UartInterface:
self.cmd(self.REQ_NOP)
self.reply(self.REQ_NOP)
def proxyreq(self, req, reboot=False, no_reply=False):
def proxyreq(self, req, reboot=False, no_reply=False, pre_reply=None):
self.cmd(self.REQ_PROXY, req)
if pre_reply:
pre_reply()
if no_reply:
return
elif reboot:
@ -329,14 +331,14 @@ class M1N1Proxy:
self.debug = debug
self.iface = iface
def request(self, opcode, *args, reboot=False, signed=False, no_reply=False):
def request(self, opcode, *args, reboot=False, signed=False, no_reply=False, pre_reply=None):
if len(args) > 6:
raise ValueError("Too many arguments")
args = list(args) + [0] * (6 - len(args))
req = struct.pack("<7Q", opcode, *args)
if self.debug:
print("<<<< %08x: %08x %08x %08x %08x %08x %08x"%tuple([opcode] + args))
reply = self.iface.proxyreq(req, reboot=reboot, no_reply=no_reply)
reply = self.iface.proxyreq(req, reboot=reboot, no_reply=no_reply, pre_reply=None)
if no_reply:
return
ret_fmt = "q" if signed else "Q"
@ -376,8 +378,10 @@ class M1N1Proxy:
return self.request(self.P_GET_BASE)
def set_baud(self, baudrate):
self.iface.tty_enable = False
def change():
self.iface.dev.baudrate = baudrate
try:
self.request(self.P_SET_BAUD, baudrate, 16, 0x005aa5f0)
self.request(self.P_SET_BAUD, baudrate, 16, 0x005aa5f0, pre_reply=change)
finally:
self.iface.tty_enable = True
def udelay(self, usec):

15
proxyclient/setup.py
View file

@ -4,15 +4,22 @@ from tgtypes import *
from utils import *
uartdev = os.environ.get("M1N1DEVICE", "/dev/ttyUSB0")
usbuart = serial.Serial(uartdev, 115200)
uart = serial.Serial(uartdev, 115200)
iface = UartInterface(usbuart, debug=False)
iface = UartInterface(uart, debug=False)
p = M1N1Proxy(iface, debug=False)
try:
uart.timeout = 0.15
iface.nop()
p.set_baud(1500000)
except UartTimeout:
uart.baudrate = 1500000
iface.nop()
u = ProxyUtils(p)
mon = RegMonitor(u)
p.set_baud(1500000)
iface.nop()
fb = u.ba.video.base