I did a bench experiment here and observed that set_gpio_ddr is required on a tx card but not an rx card. Is this intended?
Here is iotest.py (Python 2.5 required for ternary I used) #!/usr/bin/env python I2C_DEV_EEPROM = 0x50 # 24LC02[45]: 7-bits 1010xxx I2C_ADDR_BOOT = (I2C_DEV_EEPROM | 0x0) I2C_ADDR_TX_A = (I2C_DEV_EEPROM | 0x4) I2C_ADDR_RX_A = (I2C_DEV_EEPROM | 0x5) I2C_ADDR_TX_B = (I2C_DEV_EEPROM | 0x6) I2C_ADDR_RX_B = (I2C_DEV_EEPROM | 0x7) from gnuradio import uhd from gnuradio import eng_notation from gnuradio.eng_option import eng_option from optparse import OptionParser import time if __name__ == '__main__': device = uhd.usrp_sink( device_addr="addr=192.168.10.2", io_type=uhd.io_type_t.COMPLEX_FLOAT32, num_channels=1, ) cmd_handle = device.get_dboard_iface() cmd_handle.set_gpio_ddr(uhd.dboard_iface.UNIT_TX, 0xFFFF, 0xFFFF) #cmd_handle.set_gpio_ddr(uhd.dboard_iface.UNIT_RX, 0xFFFF, 0xFFFF) toggle = False while True: print ("True" if toggle else "False") cmd_handle.set_gpio_out(uhd.dboard_iface.UNIT_TX, (0xFFFF if toggle else 0x0000), 0xFFFF) cmd_handle.set_gpio_out(uhd.dboard_iface.UNIT_RX, (0xFFFF if toggle else 0x0000), 0xFFFF) toggle = ~toggle time.sleep(1) _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio