49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/*
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* Copyright (c) 2019 Peter Bigot Consulting, LLC
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* Copyright (c) 2019 Foundries.io
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/init.h>
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#include <zephyr/drivers/gpio.h>
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#define SKY_UFLn_GPIO_SPEC GPIO_DT_SPEC_GET(DT_NODELABEL(sky13351), vctl1_gpios)
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#define SKY_PCBn_GPIO_SPEC GPIO_DT_SPEC_GET(DT_NODELABEL(sky13351), vctl2_gpios)
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static inline void external_antenna(bool on)
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{
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struct gpio_dt_spec ufl_gpio = SKY_UFLn_GPIO_SPEC;
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struct gpio_dt_spec pcb_gpio = SKY_PCBn_GPIO_SPEC;
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if (!device_is_ready(ufl_gpio.port)) {
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return;
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}
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if (!device_is_ready(pcb_gpio.port)) {
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return;
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}
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gpio_pin_configure_dt(&ufl_gpio, (on ? GPIO_OUTPUT_ACTIVE : GPIO_OUTPUT_INACTIVE));
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gpio_pin_configure_dt(&pcb_gpio, (on ? GPIO_OUTPUT_INACTIVE : GPIO_OUTPUT_ACTIVE));
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}
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static int board_particle_xenon_init(const struct device *dev)
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{
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ARG_UNUSED(dev);
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/*
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* On power-up the SKY13351 is left uncontrolled, so neither
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* PCB nor external antenna is selected. Select the PCB
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* antenna.
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*/
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external_antenna(false);
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return 0;
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}
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/* needs to be done after GPIO driver init, which is at
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* POST_KERNEL:KERNEL_INIT_PRIORITY_DEFAULT.
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*/
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SYS_INIT(board_particle_xenon_init, POST_KERNEL, 99);
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