Tool/software: Linux
Hello,
I am running some WiFi RX testing on WL1837MOD. With a reference to http://processors.wiki.ti.com/index.php/WL18xx_RX_Testing, I have a script that issues the commands listed on the website in order (you can see it below). This takes 3 parameters <channel> <band> <bandwidth>. Passing 1 0 0 and 2 0 0 seems to be working with the get_rx_stats command because it prints out RSSI values. However, for any other channel, I can't seem to retrieve RSSI values even though it is able to receive packets. I varied the TX output power of a test set I have it connected to the chip as well. Is there any reason why WL1837MOD could be not printing out RSSI values for certain channels?
#!/usr/bin/env python2
import sys
import subprocess
def main():
if len(sys.argv) == 4:
channel = sys.argv[1]
band = sys.argv[2]
bandwidth = sys.argv[3]
else:
sys.exit("Please pass channel, band and bnadwidth arguments")
subprocess.call("/scripts/wlan/wlan.sh start", shell=True)
subprocess.call("ifconfig wlan0 down", shell=True)
subprocess.call("calibrator wlan0 plt power_mode on", shell=True)
subprocess.call("calibrator wlan0 wl18xx_plt tune_channel " + str(channel) + " " + str(band) + " " + str(bandwidth), shell=True)
subprocess.call("calibrator wlan0 wl18xx_plt start_rx FF:FF:FF:FF:FF:FF FF:FF:FF:FF:FF:FF", shell=True)
raw_input("Press Enter to get rx statistics...")
subprocess.call("calibrator wlan0 wl18xx_plt get_rx_stats", shell=True)
subprocess.call("calibrator wlan0 wl18xx_plt stop_rx", shell=True)
subprocess.call("calibrator wlan0 plt power_mode off", shell=True)
subprocess.call("ifconfig wlan0 up", shell=True)
if __name__ == '__main__':
main()
# python RX.py 1 0 0 Starting WLAN... OK wlcore: down wlcore: power up wlcore: PHY firmware version: Rev 8.2.0.0.236 wlcore: firmware booted in PLT mode PLT_ON (Rev 8.9.0.0.69) Calibrator:: Starting RX Simulation (Note that statistics counters are being reset)... Press Enter to get rx statistics... wlcore: testmode cmd: radio status=13356 RX statistics (status 0) Total Received Packets: 9053 FCS Errors: 8699 MAC Mismatch: 0 Good Packets: 354 Average RSSI (SOC): -70 Average RSSI (ANT): -67 PER: 0.960897 # PER = Total Bad / Total Received Calibrator:: Stopping RX Simulation wlcore: power down wlcore: PHY firmware version: Rev 8.2.0.0.236 wlcore: firmware booted (Rev 8.9.0.0.69) IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready # python RX.py 6 0 0 Starting WLAN... OK wlcore: down wlcore: power up wlcore: PHY firmware version: Rev 8.2.0.0.236 wlcore: firmware booted in PLT mode PLT_ON (Rev 8.9.0.0.69) Calibrator:: Starting RX Simulation (Note that statistics counters are being reset)... Press Enter to get rx statistics... wlcore: testmode cmd: radio status=17235 RX statistics (status 0) Total Received Packets: 10029 FCS Errors: 9891 MAC Mismatch: 0 Good Packets: 138 Average RSSI (SOC): 0 Average RSSI (ANT): 0 PER: 0.986240 # PER = Total Bad / Total Received Calibrator:: Stopping RX Simulation wlcore: power down wlcore: PHY firmware version: Rev 8.2.0.0.236 wlcore: firmware booted (Rev 8.9.0.0.69) IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready # python RX.py 11 0 0 Starting WLAN... OK wlcore: down wlcore: power up wlcore: PHY firmware version: Rev 8.2.0.0.236 wlcore: firmware booted in PLT mode PLT_ON (Rev 8.9.0.0.69) Calibrator:: Starting RX Simulation (Note that statistics counters are being reset)... Press Enter to get rx statistics... wlcore: testmode cmd: radio status=-4017 RX statistics (status 0) Total Received Packets: 10000 FCS Errors: 3859 MAC Mismatch: 0 Good Packets: 6141 Average RSSI (SOC): 0 Average RSSI (ANT): 0 PER: 0.385900 # PER = Total Bad / Total Received Calibrator:: Stopping RX Simulation wlcore: power down wlcore: PHY firmware version: Rev 8.2.0.0.236 wlcore: firmware booted (Rev 8.9.0.0.69) IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
