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adding GPIO control for TDD to USRP

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This commit is contained in:
Florian Kaltenberger
2017-08-18 11:13:47 +02:00
parent d7096758aa
commit 9c167fc3bf
1 changed files with 11 additions and 0 deletions
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targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
+11
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@@ -277,6 +277,17 @@ static int trx_usrp_start(openair0_device *device) {
usrp_state_t *s = (usrp_state_t*)device->priv; 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 // init recv and send streaming
uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS); uhd::stream_cmd_t cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
// should be s->usrp->get_time_next_pps(&cmd.time_spec); // should be s->usrp->get_time_next_pps(&cmd.time_spec);