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FR2: GPIO configuration for Interdigital Radio Unit

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For FR2 and including analog beamforming, we control the beams via GPIO
on radio units.

In this commit, introduce a configuration option to switch the GPIO
control for different devices: "generic" is the current GPIO control,
"interdigital" configures the GPIO configuration to be used with an
InterDigital device.
This commit is contained in:
Imad Al Samman
2023-07-28 14:49:37 +02:00
committed by Robert Schmidt
parent fe61354173
commit 76ccc2f5f3
4 changed files with 154 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files
radio/USRP/usrp_lib.cpp
+48 -15
View File
@@ -263,7 +263,42 @@ static int sync_to_gps(openair0_device *device) {
#define ATR_MASK 0x7f //pins controlled by ATR
#define ATR_RX 0x50 //data[4] and data[6]
#define ATR_XX 0x20 //data[5]
#define MAN_MASK ATR_MASK^0xFFF //manually controlled pins
#define MAN_MASK ATR_MASK ^ 0xFFF // manually controlled pins
static void trx_usrp_start_interdigital_gpio(openair0_device *device, usrp_state_t *s)
{
AssertFatal(device->type == USRP_X400_DEV,
"interdigital frontend device for beam management can only be used together with an X400\n");
// s->gpio_bank="GPIO0";
std::vector<std::string> sxx{12, "DB0_RF0"};
// set every pin on GPIO0 to be ocntrolled by DB1_RF0
s->usrp->set_gpio_src(s->gpio_bank, sxx);
// set data direction register (DDR) to output
s->usrp->set_gpio_attr(s->gpio_bank, "DDR", 0xfff, 0xfff);
// set lower GPIO#1 to be controlled automatically by ATR (the rest bits are controlled manually)
s->usrp->set_gpio_attr(s->gpio_bank, "CTRL", (1 << 1), (1 << 1));
// set GPIO1 (Tx/Rx1) to 1 for MHU1 for transmistting
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_XX", (1 << 1), (1 << 1));
// set GPIO4 (ID0) to 1 and GPIO2 (TX/RX2) &GPIO3 (ID1) to 0
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", (1 << 4), 0x1c);
}
static void trx_usrp_start_generic_gpio(openair0_device *device, usrp_state_t *s)
{
// setup GPIO for TDD, GPIO(4) = ATR_RX
// set data direction register (DDR) to output
s->usrp->set_gpio_attr(s->gpio_bank, "DDR", 0xfff, 0xfff);
// set bits to be controlled automatically by ATR
s->usrp->set_gpio_attr(s->gpio_bank, "CTRL", ATR_MASK, 0xfff);
// set bits to 1 when the radio is only receiving (ATR_RX)
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_RX", ATR_RX, ATR_MASK);
// set bits to 1 when the radio is transmitting and receiveing (ATR_XX)
// (we use full duplex here, because our RX is on all the time - this might need to change later)
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_XX", ATR_XX, ATR_MASK);
// set all other pins to manual
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", MAN_MASK, 0xfff);
}
/*! \brief Called to start the USRP transceiver. Return 0 if OK, < 0 if error
@param device pointer to the device structure specific to the RF hardware target
@@ -280,21 +315,19 @@ static int trx_usrp_start(openair0_device *device) {
s->gpio_bank = (char *) "GPIO0";
s->usrp->set_gpio_src(s->gpio_bank, sxx);
}
#endif
#endif
switch (device->openair0_cfg->gpio_controller) {
case RU_GPIO_CONTROL_GENERIC:
trx_usrp_start_generic_gpio(device, s);
break;
case RU_GPIO_CONTROL_INTERDIGITAL:
trx_usrp_start_interdigital_gpio(device, s);
break;
default:
AssertFatal(false, "illegal GPIO controller %d\n", device->openair0_cfg->gpio_controller);
}
// setup GPIO for TDD, GPIO(4) = ATR_RX
//set data direction register (DDR) to output
s->usrp->set_gpio_attr(s->gpio_bank, "DDR", 0xfff, 0xfff);
//set bits to be controlled automatically by ATR
s->usrp->set_gpio_attr(s->gpio_bank, "CTRL", ATR_MASK, 0xfff);
//set bits to 1 when the radio is only receiving (ATR_RX)
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_RX", ATR_RX, ATR_MASK);
// set bits to 1 when the radio is transmitting and receiveing (ATR_XX)
// (we use full duplex here, because our RX is on all the time - this might need to change later)
s->usrp->set_gpio_attr(s->gpio_bank, "ATR_XX", ATR_XX, ATR_MASK);
// set all other pins to manual
s->usrp->set_gpio_attr(s->gpio_bank, "OUT", MAN_MASK, 0xfff);
s->wait_for_first_pps = 1;
s->rx_count = 0;
s->tx_count = 0;