145 lines
3.9 KiB
C
145 lines
3.9 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018, hathach (tinyusb.org)
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* Copyright (c) 2025, Gabriel Koppenstein
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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: NXP
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*/
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#include "bsp/board_api.h"
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#include "fsl_device_registers.h"
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#include "fsl_gpio.h"
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#include "board.h"
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#include "fsl_usart.h"
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#include "fsl_clock.h"
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#include "pin_mux.h"
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#include "clock_config.h"
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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_IRQHandler(void) {
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tusb_int_handler(1, true);
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}
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void board_init(void) {
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// Init button pin, LED pins, SWD pins & UART pins
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BOARD_InitBootPins();
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// Init Clocks
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BOARD_InitBootClocks();
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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 from running 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_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
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#endif
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#ifdef NEOPIXEL_PIN
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// No neo pixel support yet
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#endif
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#ifdef UART_DEV
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// Enable UART when debug log is on
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board_uart_init_clock();
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usart_config_t uart_config;
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USART_GetDefaultConfig(&uart_config);
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uart_config.baudRate_Bps = CFG_BOARD_UART_BAUDRATE;
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uart_config.enableRx = true;
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uart_config.enableTx = true;
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USART_Init(UART_DEV, &uart_config, CLOCK_GetFlexCommClkFreq(LP_FLEXCOMM_INST));
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#endif
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// USB Initialization
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// Reset USB
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RESET_PeripheralReset(kUSB_RST_SHIFT_RSTn);
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// Enable USB Clock
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CLOCK_EnableClock(kCLOCK_Usb);
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// Enable USB PHY
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CLOCK_EnableUsbhsPhyClock();
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}
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//--------------------------------------------------------------------+
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// Board porting API
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//--------------------------------------------------------------------+
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void board_led_write(bool state) {
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GPIO_PinWrite(LED_GPIO, LED_PORT, LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
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}
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uint32_t board_button_read(void) {
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#ifdef BUTTON_GPIO
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return BUTTON_STATE_ACTIVE == GPIO_PinRead(BUTTON_GPIO, BOARD_INITPINS_WAKEUP_BTN_PORT, BUTTON_PIN);
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#endif
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}
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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 -1;
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}
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int board_uart_write(void const* buf, int len) {
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#ifdef UART_DEV
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const uint8_t *p = (const uint8_t *) buf;
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int count = 0;
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while (count < len) {
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if (UART_DEV->FIFOSTAT & USART_FIFOSTAT_TXNOTFULL_MASK) {
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UART_DEV->FIFOWR = p[count];
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count++;
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} else {
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break;
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}
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}
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return count;
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#else
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(void) buf; (void) len;
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return -1;
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#endif
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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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system_ticks++;
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}
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uint32_t tusb_time_millis_api(void) {
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return system_ticks;
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}
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#endif
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