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84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
/*
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* Copyright (C) 2018 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_common_particle-mesh
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* @{
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*
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* @file
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* @brief Common board initialization for the Particle Mesh
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*
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* @}
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*/
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#include "cpu.h"
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#include "board.h"
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#include "periph/gpio.h"
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void board_nrfantenna_select(enum board_nrfantenna_selection choice)
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{
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switch (choice) {
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case BOARD_NRFANTENNA_BUILTIN:
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/* Suppress output to the UFL connector */
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gpio_set(VCTL1_PIN);
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#ifdef VCTL2_PIN
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/* Enable output to the built-in antenna */
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gpio_clear(VCTL2_PIN);
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#endif
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break;
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case BOARD_NRFANTENNA_EXTERNAL:
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gpio_clear(VCTL1_PIN);
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#ifdef VCTL2_PIN
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gpio_set(VCTL2_PIN);
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#endif
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break;
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}
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}
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#ifdef PARTICLE_MONOFIRMWARE
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void post_startup(void)
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{
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/* For comparison with MicroPython's hook into this bootloader, they'd set
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* SCB->VTOR here. That is necessary because while the particle bootloader
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* largely mimics the ARM bootup by requiring a VTOR at the start of the
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* writable firmware, it does not set the VTOR to the loaded data.
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*
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* That step is not executed *right* here as cpu_init will do it a few
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* lines down anyway. */
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/* Force keeping the metadata -- the __attribute__((used)) in their macro
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* expansions and the KEEP on the section in the linker only almost do
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* that: at least *something* from the object file needs to be referenced
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* to pull them all in. */
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extern uint32_t particle_monofirmware_padding;
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uint32_t x;
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x = (uint32_t)&particle_monofirmware_padding;
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(void)x;
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/* Clear out POWER_CLOCK and GPIOTE interrupts set by the bootloader. (If
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* actual RIOT code enables them, it'll do so after the board_init call).
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* */
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NVIC_DisableIRQ(0);
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NVIC_DisableIRQ(6);
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}
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#endif
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void board_init(void)
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{
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gpio_init(VCTL1_PIN, GPIO_OUT);
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#ifdef VCTL2_PIN
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/* On boards without VCLT2_PIN (Boron), the VCTL2 net is driven by NOT(VCTL1) */
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gpio_init(VCTL2_PIN, GPIO_OUT);
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#endif
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board_nrfantenna_select(BOARD_NRFANTENNA_DEFAULT);
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}
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