I'm trying to use the GPIO ATR functionality on an E310 using a 'Python
Snippet' block in Gnuradio. I have code that works this way for a B210 and
am adapting it to work for the E310. However, I have not had any success.
The get_gpio_attr READBACK attribute (reads back input GPIOs but can also
read which output pins are high) print statements indicate GPIO data pin 6
should be high but there is nothing there when checked with a voltmeter.
I'm happy to provide any additional information.
Thanks,
Ethan
E310 GPIO ATR code
####################################
# CHANGING GPIO STATE FOR E310 #
####################################
import uhd
ATR_GPIO_MASK = 0b111111
# 1=atr 0=manual
ATR_CTRL = 0b111111
# 1=output 0=input
ATR_DDR = 0b111111
# 1=high on 0=nothing
ATR_0X = 0b100000
ATR_RX = 0b010000
ATR_TX = 0b001000
ATR_XX = 0b000100
# find usrp device
USRP_E310 = uhd.usrp.MultiUSRP('serial=F644E0')
# find usrp gpio port name
BANK_NAME = USRP_E310.get_gpio_banks(0)[0]
print('\n\n')
print( USRP_E310.get_gpio_attr(BANK_NAME, 'CTRL') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'DDR') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'OUT') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_0X') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_RX') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_TX') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_XX') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'READBACK') )
print('\n\n')
# configure gpio for atr operation
USRP_E310.set_gpio_attr(BANK_NAME, 'CTRL', ATR_CTRL, ATR_GPIO_MASK)
USRP_E310.set_gpio_attr(BANK_NAME, 'DDR', ATR_DDR, ATR_GPIO_MASK)
USRP_E310.set_gpio_attr(BANK_NAME, 'ATR_0X', ATR_0X, ATR_GPIO_MASK)
USRP_E310.set_gpio_attr(BANK_NAME, 'ATR_RX', ATR_RX, ATR_GPIO_MASK)
USRP_E310.set_gpio_attr(BANK_NAME, 'ATR_TX', ATR_TX, ATR_GPIO_MASK)
USRP_E310.set_gpio_attr(BANK_NAME, 'ATR_XX', ATR_XX, ATR_GPIO_MASK)
print('\n\n')
print( USRP_E310.get_gpio_attr(BANK_NAME, 'CTRL') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'DDR') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'OUT') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_0X') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_RX') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_TX') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'ATR_XX') )
print( USRP_E310.get_gpio_attr(BANK_NAME, 'READBACK') )
print('\n\n')
Print statement outputs
0
4294967295
0
0
0
0
0
0
63 < CTRL
4294967295 < DDR
0 < OUT
32 < 0X (idle) set for pin 6
16 < RX set for pin 5
8 < TX set for pin 4
4 < XX (full duplex) set for pin 3
32 < READBACK detects high on pin 6
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