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-/*
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- * The MIT License (MIT)
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- *
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- * Copyright (c) 2019 Ha Thach (tinyusb.org)
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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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-
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-#include "sam.h"
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-#include "bsp/board.h"
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-
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-#include "hal/include/hal_gpio.h"
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-#include "hal/include/hal_init.h"
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-#include "hri/hri_nvmctrl_d21.h"
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-
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-#include "hpl/gclk/hpl_gclk_base.h"
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-#include "hpl_pm_config.h"
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-#include "hpl/pm/hpl_pm_base.h"
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-
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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_Handler(void)
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-{
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- tud_int_handler(0);
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-}
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-
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-//--------------------------------------------------------------------+
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-// MACRO TYPEDEF CONSTANT ENUM DECLARATION
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-//--------------------------------------------------------------------+
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-#define LED_PIN 26
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-#define BUTTON_PIN 9 // PA4, pin D1 on seeed pinout
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-
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-/* Referenced GCLKs, should be initialized firstly */
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-#define _GCLK_INIT_1ST (1 << 0 | 1 << 1)
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-
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-/* Not referenced GCLKs, initialized last */
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-#define _GCLK_INIT_LAST (~_GCLK_INIT_1ST)
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-
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-void board_init(void)
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-{
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- // Clock init ( follow hpl_init.c )
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- hri_nvmctrl_set_CTRLB_RWS_bf(NVMCTRL, 2);
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-
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- _pm_init();
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- _sysctrl_init_sources();
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-#if _GCLK_INIT_1ST
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- _gclk_init_generators_by_fref(_GCLK_INIT_1ST);
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-#endif
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- _sysctrl_init_referenced_generators();
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- _gclk_init_generators_by_fref(_GCLK_INIT_LAST);
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-
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- // Update SystemCoreClock since it is hard coded with asf4 and not correct
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- // Init 1ms tick timer (samd SystemCoreClock may not correct)
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- SystemCoreClock = CONF_CPU_FREQUENCY;
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- SysTick_Config(CONF_CPU_FREQUENCY / 1000);
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-
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- // Led init
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- gpio_set_pin_direction(LED_PIN, GPIO_DIRECTION_OUT);
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- gpio_set_pin_level(LED_PIN, 0);
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-
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- // Button init
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- gpio_set_pin_direction(BUTTON_PIN, GPIO_DIRECTION_IN);
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- gpio_set_pin_pull_mode(BUTTON_PIN, GPIO_PULL_UP);
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-
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-#if CFG_TUSB_OS == OPT_OS_FREERTOS
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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_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
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-#endif
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-
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- /* USB Clock init
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- * The USB module requires a GCLK_USB of 48 MHz ~ 0.25% clock
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- * for low speed and full speed operation. */
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- _pm_enable_bus_clock(PM_BUS_APBB, USB);
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- _pm_enable_bus_clock(PM_BUS_AHB, USB);
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- _gclk_enable_channel(USB_GCLK_ID, GCLK_CLKCTRL_GEN_GCLK0_Val);
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-
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- // USB Pin Init
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- gpio_set_pin_direction(PIN_PA24, GPIO_DIRECTION_OUT);
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- gpio_set_pin_level(PIN_PA24, false);
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- gpio_set_pin_pull_mode(PIN_PA24, GPIO_PULL_OFF);
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- gpio_set_pin_direction(PIN_PA25, GPIO_DIRECTION_OUT);
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- gpio_set_pin_level(PIN_PA25, false);
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- gpio_set_pin_pull_mode(PIN_PA25, GPIO_PULL_OFF);
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-
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- gpio_set_pin_function(PIN_PA24, PINMUX_PA24G_USB_DM);
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- gpio_set_pin_function(PIN_PA25, PINMUX_PA25G_USB_DP);
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-}
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-
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-//--------------------------------------------------------------------+
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-// Board porting API
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-//--------------------------------------------------------------------+
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-
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-void board_led_write(bool state)
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-{
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- gpio_set_pin_level(LED_PIN, state);
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-}
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-
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-uint32_t board_button_read(void)
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-{
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- // button is active low
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- return gpio_get_pin_level(BUTTON_PIN) ? 0 : 1;
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-}
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-
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-int board_uart_read(uint8_t* buf, int len)
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-{
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- (void) buf; (void) len;
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- return 0;
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-}
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-
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-int board_uart_write(void const * buf, int len)
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-{
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- (void) buf; (void) len;
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- return 0;
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-}
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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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-{
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- system_ticks++;
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-}
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-
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-uint32_t board_millis(void)
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-{
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- return system_ticks;
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-}
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-#endif
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-
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-void HardFault_Handler(void) {
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- while(1);
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-}
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hathach