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/*
* The MIT License (MIT)
*
* Copyright (c) 2018, hathach (tinyusb.org)
*
* 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 "fsl_device_registers.h"
#include "fsl_gpio.h"
#include "fsl_power.h"
#include "fsl_iocon.h"
#include "bsp/board_api.h"
#include "board.h"
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USB0_IRQHandler(void) {
tud_int_handler(0);
}
void board_init(void) {
// Enable IOCON clock
CLOCK_EnableClock(kCLOCK_Iocon);
// Enable GPIO0 clock
CLOCK_EnableClock(kCLOCK_Gpio0);
// Init 96 MHz clock
BootClockFROHF96M();
#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(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
#endif
GPIO_PortInit(GPIO, LED_PORT);
GPIO_PortInit(GPIO, BUTTON_PORT);
// LED
gpio_pin_config_t const led_config = {kGPIO_DigitalOutput, 0};
GPIO_PinInit(GPIO, LED_PORT, LED_PIN, &led_config);
board_led_write(true);
// Button
gpio_pin_config_t const button_config = {kGPIO_DigitalInput, 0};
GPIO_PinInit(GPIO, BUTTON_PORT, BUTTON_PIN, &button_config);
// USB
const uint32_t port1_pin6_config = (
IOCON_PIO_FUNC7 | /* Pin is configured as USB0_VBUS */
IOCON_PIO_MODE_INACT | /* No addition pin function */
IOCON_PIO_INV_DI | /* Input function is not inverted */
IOCON_PIO_DIGITAL_EN | /* Enables digital function */
IOCON_PIO_INPFILT_OFF | /* Input filter disabled */
IOCON_PIO_OPENDRAIN_DI /* Open drain is disabled */
);
IOCON_PinMuxSet(IOCON, 1, 6, port1_pin6_config); /* PORT1 PIN6 (coords: 26) is configured as USB0_VBUS */
POWER_DisablePD(kPDRUNCFG_PD_USB0_PHY); /*Turn on USB Phy */
CLOCK_EnableUsbfs0Clock(kCLOCK_UsbSrcFro, CLOCK_GetFreq(kCLOCK_FroHf)); /* enable USB IP clock */
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state) {
GPIO_PinWrite(GPIO, LED_PORT, LED_PIN, state ? LED_STATE_ON : (1 - LED_STATE_ON));
}
uint32_t board_button_read(void) {
// active low
return 1 - GPIO_PinRead(GPIO, BUTTON_PORT, BUTTON_PIN);
}
int board_uart_read(uint8_t* buf, int len) {
(void) buf;
(void) len;
return -1;
}
int board_uart_write(void const* buf, int len) {
(void) buf;
(void) len;
return -1;
}
#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
#ifndef __ICCARM__
// Implement _start() since we use linker flag '-nostartfiles'.
// Requires defined __STARTUP_CLEAR_BSS,
extern int main(void);
TU_ATTR_UNUSED void _start(void) {
// called by startup code
main();
while (1) {}
}
#ifdef __clang__
void _exit (int __status) {
(void) __status;
while (1) {}
}
#endif
#endif
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