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/*
* The MIT License (MIT)
*
* Copyright (c) 2018, hathach (tinyusb.org)
* Copyright (c) 2025, Gabriel Koppenstein
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
/* metadata:
manufacturer: NXP
*/
#include "bsp/board_api.h"
#include "fsl_device_registers.h"
#include "fsl_gpio.h"
#include "board.h"
#include "fsl_usart.h"
#include "fsl_clock.h"
#include "pin_mux.h"
#include "clock_config.h"
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USB_IRQHandler(void) {
tusb_int_handler(1, true);
}
void board_init(void) {
// Init button pin, LED pins, SWD pins & UART pins
BOARD_InitBootPins();
// Init Clocks
BOARD_InitBootClocks();
#if CFG_TUSB_OS == OPT_OS_NONE
// 1ms tick timer
SysTick_Config(SystemCoreClock / 1000);
#elif CFG_TUSB_OS == OPT_OS_FREERTOS
// Explicitly disable systick to prevent its ISR from running before scheduler start
SysTick->CTRL &= ~1U;
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
#endif
#ifdef NEOPIXEL_PIN
// No neo pixel support yet
#endif
#ifdef UART_DEV
// Enable UART when debug log is on
board_uart_init_clock();
usart_config_t uart_config;
USART_GetDefaultConfig(&uart_config);
uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE;
uart_config.enableRx = true;
uart_config.enableTx = true;
USART_Init(UART_DEV, &uart_config, CLOCK_GetFlexCommClkFreq(LP_FLEXCOMM_INST));
#endif
// USB Initialization
// Reset USB
RESET_PeripheralReset(kUSB_RST_SHIFT_RSTn);
// Enable USB Clock
CLOCK_EnableClock(kCLOCK_Usb);
// Enable USB PHY
CLOCK_EnableUsbhsPhyClock();
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state) {
GPIO_PinWrite(LED_GPIO, LED_PORT, LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
}
uint32_t board_button_read(void) {
#ifdef BUTTON_GPIO
return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_GPIO, BOARD_INITPINS_WAKEUP_BTN_PORT, BUTTON_PIN);
#endif
}
int board_uart_read(uint8_t* buf, int len) {
(void) buf;
(void) len;
return -1;
}
int board_uart_write(void const* buf, int len) {
#ifdef UART_DEV
const uint8_t *p = (const uint8_t *) buf;
int count = 0;
while (count < len) {
if (UART_DEV->FIFOSTAT & USART_FIFOSTAT_TXNOTFULL_MASK) {
UART_DEV->FIFOWR = p[count];
count++;
} else {
break;
}
}
return count;
#else
(void) buf; (void) len;
return -1;
#endif
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler(void) {
system_ticks++;
}
uint32_t tusb_time_millis_api(void) {
return system_ticks;
}
#endif
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