217 lines
6.7 KiB
C
217 lines
6.7 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2025 Dalton Caron
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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/* metadata:
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manufacturer: STMicroelectronics
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*/
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#include <stdbool.h>
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#include "stm32wbaxx_hal.h"
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#include "bsp/board_api.h"
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#include "board.h"
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//--------------------------------------------------------------------+
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// MACRO TYPEDEF CONSTANT ENUM
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//--------------------------------------------------------------------+
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#ifndef USART_TIMEOUT_TICKS
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#define USART_TIMEOUT_TICKS 1000
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#endif
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static UART_HandleTypeDef uart_handle;
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//--------------------------------------------------------------------+
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// Forward USB interrupt events to TinyUSB IRQ Handler
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//--------------------------------------------------------------------+
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void USB_OTG_HS_IRQHandler(void) {
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tud_int_handler(0);
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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static void board_gpio_configuration(void) {
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GPIO_InitTypeDef gpio_init = {0};
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USART_GPIO_CLK_EN();
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USART_CLK_EN();
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// Configure USART TX pin
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gpio_init.Pin = USART_TX_PIN;
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gpio_init.Mode = GPIO_MODE_AF_PP;
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gpio_init.Pull = GPIO_NOPULL;
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gpio_init.Speed = GPIO_SPEED_FREQ_HIGH;
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gpio_init.Alternate = USART_GPIO_AF;
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HAL_GPIO_Init(USART_TX_GPIO_PORT, &gpio_init);
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// Configure USART RX pin
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gpio_init.Pin = USART_RX_PIN;
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gpio_init.Mode = GPIO_MODE_AF_PP;
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gpio_init.Pull = GPIO_PULLUP;
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gpio_init.Speed = GPIO_SPEED_FREQ_HIGH;
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gpio_init.Alternate = USART_GPIO_AF;
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HAL_GPIO_Init(USART_RX_GPIO_PORT, &gpio_init);
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// Configure the LED
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LED_CLK_EN();
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gpio_init.Pin = LED_PIN;
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gpio_init.Mode = GPIO_MODE_OUTPUT_PP;
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gpio_init.Pull = GPIO_PULLUP;
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gpio_init.Speed = GPIO_SPEED_FREQ_LOW;
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gpio_init.Alternate = 0;
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HAL_GPIO_Init(LED_PORT, &gpio_init);
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// Default LED state is off
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board_led_write(false);
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// Configure the button
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BUTTON_CLK_EN();
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gpio_init.Pin = BUTTON_PIN;
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gpio_init.Mode = GPIO_MODE_INPUT;
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gpio_init.Pull = GPIO_PULLUP;
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gpio_init.Speed = GPIO_SPEED_FREQ_LOW;
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gpio_init.Alternate = 0;
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HAL_GPIO_Init(BUTTON_PORT, &gpio_init);
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// Configure USB DM and DP pins. This is optional, and maintained only for user guidance.
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gpio_init.Pin = (GPIO_PIN_7 | GPIO_PIN_6);
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gpio_init.Mode = GPIO_MODE_INPUT;
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gpio_init.Pull = GPIO_NOPULL;
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gpio_init.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOD, &gpio_init);
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}
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static void board_uart_configuration(void) {
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uart_handle = ( UART_HandleTypeDef){
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.Instance = USART_DEV,
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.Init.BaudRate = CFG_BOARD_UART_BAUDRATE,
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.Init.WordLength = UART_WORDLENGTH_8B,
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.Init.StopBits = UART_STOPBITS_1,
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.Init.Parity = UART_PARITY_NONE,
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.Init.HwFlowCtl = UART_HWCONTROL_NONE,
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.Init.Mode = UART_MODE_TX_RX,
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.Init.OverSampling = UART_OVERSAMPLING_16
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};
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HAL_UART_Init(&uart_handle);
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}
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void board_init(void) {
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board_system_clock_config();
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board_gpio_configuration();
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board_uart_configuration();
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#ifdef USB_OTG_HS
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// STM32WBA65/64/62 only has 1 USB HS port
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#if CFG_TUSB_OS == OPT_OS_NONE
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// 1ms tick timer
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SysTick_Config(SystemCoreClock / 1000);
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#elif CFG_TUSB_OS == OPT_OS_FREERTOS
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// Explicitly disable systick to prevent its ISR runs before scheduler start
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SysTick->CTRL &= ~1U;
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USB_OTG_HS_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
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#endif
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// USB clock enable
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__HAL_RCC_USB_OTG_HS_CLK_ENABLE();
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__HAL_RCC_USB_OTG_HS_PHY_CLK_ENABLE();
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// See the reference manual section 11.4.7 for the USB OTG powering sequence
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// Remove the VDDUSB power isolation
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PWR->SVMCR |= PWR_SVMCR_USV;
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// Enable VDD11USB supply by clearing VDD11USBDIS to 0
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PWR->VOSR &= ~PWR_VOSR_VDD11USBDIS;
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// Enable USB OTG internal power by setting USBPWREN to 1
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PWR->VOSR |= PWR_VOSR_USBPWREN;
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// Wait for VDD11USB supply to be ready in VDD11USBRDY = 1
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while ((PWR->VOSR & PWR_VOSR_VDD11USBRDY) == 0) {}
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// Enable USB OTG booster by setting USBBOOSTEN to 1
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PWR->VOSR |= PWR_VOSR_USBBOOSTEN;
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// Wait for USB OTG booster to be ready in USBBOOSTRDY = 1
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while ((PWR->VOSR & PWR_VOSR_USBBOOSTRDY) == 0) {}
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// Enable USB power on Pwrctrl CR2 register
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PWR->SVMCR |= PWR_SVMCR_USV;
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// Set the reference clock selection (must match the clock source)
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SYSCFG->OTGHSPHYCR &= ~SYSCFG_OTGHSPHYCR_CLKSEL;
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SYSCFG->OTGHSPHYCR |= SYSCFG_OTGHSPHYCR_CLKSEL_0 | SYSCFG_OTGHSPHYCR_CLKSEL_1 |
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SYSCFG_OTGHSPHYCR_CLKSEL_3;// 32MHz clock
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// Configuring the SYSCFG registers OTG_HS PHY
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SYSCFG->OTGHSPHYCR |= SYSCFG_OTGHSPHYCR_EN;
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// Disable VBUS sense (B device)
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USB_OTG_HS->GCCFG &= ~USB_OTG_GCCFG_VBDEN;
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// B-peripheral session valid override enable
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USB_OTG_HS->GCCFG |= USB_OTG_GCCFG_VBVALEXTOEN;
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USB_OTG_HS->GCCFG |= USB_OTG_GCCFG_VBVALOVAL;
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#endif // USB_OTG_FS
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}
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void board_led_write(bool state) { HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON)); }
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uint32_t board_button_read(void) { return HAL_GPIO_ReadPin(BUTTON_PORT, BUTTON_PIN) == BUTTON_STATE_ACTIVE; }
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int board_uart_read(uint8_t *buf, int len) {
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(void) buf;
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(void) len;
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return 0;
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}
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int board_uart_write(void const *buf, int len) {
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(void) HAL_UART_Transmit(&uart_handle, (const uint8_t *) buf, len, USART_TIMEOUT_TICKS);
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return len;
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}
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#if CFG_TUSB_OS == OPT_OS_NONE
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volatile uint32_t system_ticks = 0;
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void SysTick_Handler(void) {
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HAL_IncTick();
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system_ticks++;
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}
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uint32_t board_millis(void) { return system_ticks; }
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#endif
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void HardFault_Handler(void) { asm( "bkpt 1" ); }
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// Required by __libc_init_array in startup code if we are compiling using -nostdlib/-nostartfiles.
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void _init(void);
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void _init(void) {}
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