Gs Usb 0.3.0 | GitLocker.com Product

Description:

gsusb 0.3.0

gs_usb
Python Windows/Linux/Mac CAN driver based on usbfs or WinUSB WCID for Geschwister Schneider USB/CAN devices, candleLight USB CAN interfaces, CAN Debugger devices and other interfaces utilising the gs_usb driver.
Getting Started
Install by pip install gs_usb
Below is a basic demo for CAN message sending and receiving.
import time

from gs_usb.gs_usb import GsUsb
from gs_usb.gs_usb_frame import GsUsbFrame
from gs_usb.constants import (
CAN_EFF_FLAG,
CAN_ERR_FLAG,
CAN_RTR_FLAG,
)

def main():
# Find our device
devs = GsUsb.scan()
if len(devs) == 0:
print("Can not find gs_usb device")
return
dev = devs[0]

# Configuration
if not dev.set_bitrate(250000):
print("Can not set bitrate for gs_usb")
return

# Start device
dev.start()

# Prepare frames
data = b"\x12\x34\x56\x78\x9A\xBC\xDE\xF0"
sff_frame = GsUsbFrame(can_id=0x7FF, data=data)
sff_none_data_frame = GsUsbFrame(can_id=0x7FF)
err_frame = GsUsbFrame(can_id=0x7FF | CAN_ERR_FLAG, data=data)
eff_frame = GsUsbFrame(can_id=0x12345678 | CAN_EFF_FLAG, data=data)
eff_none_data_frame = GsUsbFrame(can_id=0x12345678 | CAN_EFF_FLAG)
rtr_frame = GsUsbFrame(can_id=0x7FF | CAN_RTR_FLAG)
rtr_with_eid_frame = GsUsbFrame(can_id=0x12345678 | CAN_RTR_FLAG | CAN_EFF_FLAG)
rtr_with_data_frame = GsUsbFrame(can_id=0x7FF | CAN_RTR_FLAG, data=data)
frames = [
sff_frame,
sff_none_data_frame,
err_frame,
eff_frame,
eff_none_data_frame,
rtr_frame,
rtr_with_eid_frame,
rtr_with_data_frame,
]

# Read all the time and send message in each second
end_time, n = time.time() + 1, -1
while True:
iframe = GsUsbFrame()
if dev.read(iframe, 1):
print("RX {}".format(iframe))

if time.time() - end_time >= 0:
end_time = time.time() + 1
n += 1
n %= len(frames)

if dev.send(frames[n]):
print("TX {}".format(frames[n]))

if __name__ == "__main__":
try:
main()
except KeyboardInterrupt:
pass