Commit 817e41f9 authored by Stancu Florin's avatar Stancu Florin Committed by Stephanos Ioannidis
Browse files

boards: cc1352p1_launchxl: new board, support antenna switching 



Added new CC1352P1 LaunchXL board supporting 20dBm TX for its
sub-GHz radio.

Note that the board has a multiplexer circuit to switch between
2.4GHz, High-Power TX and Sub1GHz states, for which a custom board
module was implemented, together with board-specific device-tree
bindings and pinctrl definitions for each of the RF states.

Signed-off-by: default avatarStancu Florin <niflostancu@gmail.com>
parent e41de923

boards/arm/cc1352p1_launchxl/CMakeLists.txt

0 → 100644
+6 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: Apache-2.0



zephyr_library()

zephyr_library_sources(

    board_antenna.c

    )

boards/arm/cc1352p1_launchxl/Kconfig.board

0 → 100644
+20 −0
Original line number Diff line number Diff line 
# TI CC1352R LaunchXL board



# Copyright (c) 2021 Florin Stancu

# SPDX-License-Identifier: Apache-2.0



config BOARD_CC1352P1_LAUNCHXL

	bool "TI CC1352P1 LaunchXL"

	depends on SOC_CC1352P



if BOARD_CC1352P1_LAUNCHXL



config BOARD_ANTENNA_INIT_PRIO

	int "Board antenna switch initialization priority"

	default 70

	help

	  Set the priority for board init, must be greater than

	  KERNEL_INIT_PRIORITY_DEVICE but smaller than

	  IEEE802154_CC13XX_CC26XX_SUB_GHZ_INIT_PRIO.



endif # BOARD_CC1352P1_LAUNCHXL

boards/arm/cc1352p1_launchxl/Kconfig.defconfig

0 → 100644
+11 −0
Original line number Diff line number Diff line 
# TI CC1352P1 LaunchXL board



# Copyright (c) 2021 Florin Stancu

# SPDX-License-Identifier: Apache-2.0



if BOARD_CC1352P1_LAUNCHXL



config BOARD

	default "cc1352p1_launchxl"



endif # BOARD_CC1352P1_LAUNCHXL

boards/arm/cc1352p1_launchxl/board.cmake

0 → 100644
+5 −0
Original line number Diff line number Diff line 
# Copyright (c) 2021 Florin Stancu

#

# SPDX-License-Identifier: Apache-2.0



include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

boards/arm/cc1352p1_launchxl/board_antenna.c

0 → 100644
+135 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2021 Florin Stancu

 *

 * SPDX-License-Identifier: Apache-2.0

 */



/*

 * Implements the RF driver callback to configure the on-board antenna

 * switch.

 */



#define DT_DRV_COMPAT skyworks_sky13317



#include <zephyr/init.h>

#include <zephyr/device.h>

#include <zephyr/drivers/gpio.h>

#include <zephyr/drivers/pinctrl.h>



#include <ti/drivers/rf/RF.h>

#include <driverlib/rom.h>

#include <driverlib/interrupt.h>



/* custom pinctrl states for the antenna mux */

#define PINCTRL_STATE_ANT_24G		1

#define PINCTRL_STATE_ANT_24G_PA	2

#define PINCTRL_STATE_ANT_SUBG		3

#define PINCTRL_STATE_ANT_SUBG_PA	4



#define BOARD_ANT_GPIO_24G   0

#define BOARD_ANT_GPIO_PA    1

#define BOARD_ANT_GPIO_SUBG  2



#define ANTENNA_MUX DT_NODELABEL(antenna_mux0)



static int board_antenna_init(const struct device *dev);

static void board_cc13xx_rf_callback(RF_Handle client, RF_GlobalEvent events,

		void *arg);



const RFCC26XX_HWAttrsV2 RFCC26XX_hwAttrs = {

	.hwiPriority        = INT_PRI_LEVEL7,

	.swiPriority        = 0,

	.xoscHfAlwaysNeeded = true,

	/* RF driver callback for custom antenna switching */

	.globalCallback = board_cc13xx_rf_callback,

	/* Subscribe to events */

	.globalEventMask = (RF_GlobalEventRadioSetup |

			RF_GlobalEventRadioPowerDown),

};



PINCTRL_DT_INST_DEFINE(0);

DEVICE_DT_INST_DEFINE(0, board_antenna_init, NULL, NULL, NULL,

					  POST_KERNEL, CONFIG_BOARD_ANTENNA_INIT_PRIO, NULL);



static const struct pinctrl_dev_config *ant_pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(0);

static const struct gpio_dt_spec ant_gpios[] = {

	GPIO_DT_SPEC_GET_BY_IDX_OR(ANTENNA_MUX, gpios, BOARD_ANT_GPIO_24G, {0}),

	GPIO_DT_SPEC_GET_BY_IDX_OR(ANTENNA_MUX, gpios, BOARD_ANT_GPIO_PA, {0}),

	GPIO_DT_SPEC_GET_BY_IDX_OR(ANTENNA_MUX, gpios, BOARD_ANT_GPIO_SUBG, {0}),

};





/**

 * Antenna switch GPIO init routine.

 */

int board_antenna_init(const struct device *dev)

{

	ARG_UNUSED(dev);

	int i;



	/* default pinctrl configuration: set all antenna mux control pins as GPIOs */

	pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_DEFAULT);

	/* set all GPIOs to 0 (all RF paths disabled) */

	for (i = 0; i < ARRAY_SIZE(ant_gpios); i++) {

		gpio_pin_configure_dt(&ant_gpios[i], 0);

	}

	return 0;

}



/**

 * Custom TI RFCC26XX callback for switching the on-board antenna mux on radio setup.

 */

void board_cc13xx_rf_callback(RF_Handle client, RF_GlobalEvent events, void *arg)

{

	bool    sub1GHz   = false;

	uint8_t loDivider = 0;

	int i;



	/* Clear all antenna switch GPIOs (for all cases). */

	for (i = 0; i < ARRAY_SIZE(ant_gpios); i++) {

		gpio_pin_configure_dt(&ant_gpios[i], 0);

	}



	if (events & RF_GlobalEventRadioSetup) {

		/* Decode the current PA configuration. */

		RF_TxPowerTable_PAType paType = (RF_TxPowerTable_PAType)

			RF_getTxPower(client).paType;

		/* Decode the generic argument as a setup command. */

		RF_RadioSetup *setupCommand = (RF_RadioSetup *)arg;



		switch (setupCommand->common.commandNo) {

		case CMD_RADIO_SETUP:

		case CMD_BLE5_RADIO_SETUP:

			loDivider = RF_LODIVIDER_MASK & setupCommand->common.loDivider;

			break;

		case CMD_PROP_RADIO_DIV_SETUP:

			loDivider = RF_LODIVIDER_MASK & setupCommand->prop_div.loDivider;

			break;

		default:

			break;

		}

		sub1GHz = (loDivider != 0);



		if (sub1GHz) {

			if (paType == RF_TxPowerTable_HighPA) {

				/* Note: RFC_GPO3 is a work-around because the RFC_GPO1 */

				/* is sometimes not de-asserted on CC1352 Rev A. */

				pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_SUBG_PA);

			} else {

				pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_SUBG);

				/* Manually set the sub-GHZ antenna switch DIO */

				gpio_pin_configure_dt(&ant_gpios[BOARD_ANT_GPIO_SUBG], 1);

			}

		} else /* 2.4 GHz */ {

			if (paType == RF_TxPowerTable_HighPA) {

				pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_24G_PA);

			} else {

				pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_24G);

				/* Manually set the 2.4GHZ antenna switch DIO */

				gpio_pin_configure_dt(&ant_gpios[BOARD_ANT_GPIO_24G], 1);

			}

		}

	} else {

		pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_DEFAULT);

	}

}

CRA Git | Maintained and supported by SUSTech CRA and CCSE