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wangwenhui
OpenXG-RAN
Commits
9c167fc3
Commit
9c167fc3
authored
7 years ago
by
Florian Kaltenberger
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adding GPIO control for TDD to USRP
parent
d7096758
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targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
+11
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targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
View file @
9c167fc3
...
...
@@ -277,6 +277,17 @@ static int trx_usrp_start(openair0_device *device) {
usrp_state_t
*
s
=
(
usrp_state_t
*
)
device
->
priv
;
// setup GPIO for TDD, GPIO(4) = ATR_RX
//set data direction register (DDR) to output
s
->
usrp
->
set_gpio_attr
(
"FP0"
,
"DDR"
,
0x1f
,
0x1f
);
//set control register to ATR
s
->
usrp
->
set_gpio_attr
(
"FP0"
,
"CTRL"
,
0x1f
,
0x1f
);
//set ATR register
s
->
usrp
->
set_gpio_attr
(
"FP0"
,
"ATR_RX"
,
1
<<
4
,
0x1f
);
// init recv and send streaming
uhd
::
stream_cmd_t
cmd
(
uhd
::
stream_cmd_t
::
STREAM_MODE_START_CONTINUOUS
);
// should be s->usrp->get_time_next_pps(&cmd.time_spec);
...
...
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