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/*
* The MIT License (MIT)
*
* Copyright (c) 2021, Ha Thach (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.
*/
#include "xmc_gpio.h"
#include "xmc_scu.h"
#include "bsp/board.h"
#include "board.h"
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USB0_0_IRQHandler(void)
{
tud_int_handler(0);
}
void board_init(void)
{
board_clock_init();
SystemCoreClockUpdate();
// LED
XMC_GPIO_CONFIG_t led_cfg;
led_cfg.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL;
led_cfg.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
led_cfg.output_strength = XMC_GPIO_OUTPUT_STRENGTH_MEDIUM;
XMC_GPIO_Init(LED_PIN, &led_cfg);
// Button
XMC_GPIO_CONFIG_t button_cfg;
button_cfg.mode = XMC_GPIO_MODE_INPUT_TRISTATE;
XMC_GPIO_Init(BUTTON_PIN, &button_cfg);
#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 runs before scheduler start
SysTick->CTRL &= ~1U;
// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
NVIC_SetPriority(USB0_0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
#endif
// USB Power Enable
XMC_SCU_RESET_DeassertPeripheralReset(XMC_SCU_PERIPHERAL_RESET_USB0);
XMC_SCU_POWER_EnableUsb();
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state)
{
uint32_t is_high = state ? LED_STATE_ON : (1-LED_STATE_ON);
XMC_GPIO_SetOutputLevel(LED_PIN, is_high ? XMC_GPIO_OUTPUT_LEVEL_HIGH : XMC_GPIO_OUTPUT_LEVEL_LOW);
}
uint32_t board_button_read(void)
{
return BUTTON_STATE_ACTIVE == XMC_GPIO_GetInput(BUTTON_PIN);
}
int board_uart_read(uint8_t* buf, int len)
{
#ifdef UART_DEV
for(int i=0;i<len;i++) {
buf[i] = uart_getc(uart_inst);
}
return len;
#else
(void) buf; (void) len;
return 0;
#endif
}
int board_uart_write(void const * buf, int len)
{
#ifdef UART_DEV
char const* bufch = (char const*) buf;
for(int i=0;i<len;i++) {
uart_putc(uart_inst, bufch[i]);
}
return len;
#else
(void) buf; (void) len;
return 0;
#endif
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void SysTick_Handler(void)
{
system_ticks++;
}
uint32_t board_millis(void)
{
return system_ticks;
}
#endif
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