#!/usr/bin/env python3
import time
from panda import Panda, PandaDFU
[docs]
class GPIO:
STM_RST_N = 124
STM_BOOT0 = 134
HUB_RST_N = 30
[docs]
def gpio_init(pin, output):
with open(f"/sys/class/gpio/gpio{pin}/direction", 'wb') as f:
f.write(b"out" if output else b"in")
[docs]
def gpio_set(pin, high):
with open(f"/sys/class/gpio/gpio{pin}/value", 'wb') as f:
f.write(b"1" if high else b"0")
if __name__ == "__main__":
for pin in (GPIO.STM_RST_N, GPIO.STM_BOOT0, GPIO.HUB_RST_N):
gpio_init(pin, True)
# reset USB hub
gpio_set(GPIO.HUB_RST_N, 0)
time.sleep(0.5)
gpio_set(GPIO.HUB_RST_N, 1)
# flash bootstub
print("resetting into DFU")
gpio_set(GPIO.STM_RST_N, 1)
gpio_set(GPIO.STM_BOOT0, 1)
time.sleep(1)
gpio_set(GPIO.STM_RST_N, 0)
gpio_set(GPIO.STM_BOOT0, 0)
time.sleep(1)
print("flashing bootstub")
PandaDFU(None).recover()
gpio_set(GPIO.STM_RST_N, 1)
time.sleep(0.5)
gpio_set(GPIO.STM_RST_N, 0)
time.sleep(1)
print("flashing app")
p = Panda()
assert p.bootstub
p.flash()