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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 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 "board.h"
#include "drv_usb_hw.h"
#include "drv_usb_dev.h"
#include "../board.h"
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USBFS_IRQHandler(void) { tud_int_handler(0); }
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM
//--------------------------------------------------------------------+
#define USB_NO_VBUS_PIN
// According to GD32VF103 user manual clock tree:
// Systick clock = AHB clock / 4.
#define TIMER_TICKS ((SystemCoreClock / 4) / 1000)
#define BUTTON_PORT GPIOA
#define BUTTON_PIN GPIO_PIN_0
#define BUTTON_STATE_ACTIVE 1
#define UART_DEV SOC_DEBUG_UART
#define LED_PIN LED_R
void board_init(void) {
/* Disable interrupts during init */
__disable_irq();
#if CFG_TUSB_OS == OPT_OS_NONE
SysTick_Config(TIMER_TICKS);
#endif
rcu_periph_clock_enable(RCU_GPIOA);
rcu_periph_clock_enable(RCU_GPIOB);
rcu_periph_clock_enable(RCU_GPIOC);
rcu_periph_clock_enable(RCU_GPIOD);
rcu_periph_clock_enable(RCU_AF);
#ifdef BUTTON_PIN
gpio_init(BUTTON_PORT, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, BUTTON_PIN);
#endif
#ifdef LED_PIN
gd_led_init(LED_PIN);
#endif
#if defined(UART_DEV)
gd_com_init(UART_DEV);
#endif
/* USB D+ and D- pins don't need to be configured. */
/* Configure VBUS Pin */
#ifndef USB_NO_VBUS_PIN
gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_9);
#endif
/* This for ID line debug */
// gpio_init(GPIOA, GPIO_MODE_AF_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_10);
/* Enable USB OTG clock */
usb_rcu_config();
/* Reset USB OTG peripheral */
rcu_periph_reset_enable(RCU_USBFSRST);
rcu_periph_reset_disable(RCU_USBFSRST);
/* Configure USBFS IRQ */
ECLIC_Register_IRQ(USBFS_IRQn, ECLIC_NON_VECTOR_INTERRUPT,
ECLIC_POSTIVE_EDGE_TRIGGER, 3, 0, NULL);
/* Retrieve otg core registers */
usb_gr* otg_core_regs = (usb_gr*)(USBFS_REG_BASE + USB_REG_OFFSET_CORE);
#ifdef USB_NO_VBUS_PIN
/* Disable VBUS sense*/
otg_core_regs->GCCFG |= GCCFG_VBUSIG | GCCFG_PWRON | GCCFG_VBUSBCEN;
#else
/* Enable VBUS sense via pin PA9 */
otg_core_regs->GCCFG |= GCCFG_VBUSIG | GCCFG_PWRON | GCCFG_VBUSBCEN;
otg_core_regs->GCCFG &= ~GCCFG_VBUSIG;
#endif
/* Enable interrupts globaly */
__enable_irq();
}
void gd32vf103_reset(void) {
/* The MTIMER unit of the GD32VF103 doesn't have the MSFRST
* register to generate a software reset request.
* BUT instead two undocumented registers in the debug peripheral
* that allow issueing a software reset.
* https://github.com/esmil/gd32vf103inator/blob/master/include/gd32vf103/dbg.h
*/
DBG_KEY = DBG_KEY_UNLOCK;
DBG_CMD = DBG_CMD_RESET;
}
//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+
void board_led_write(bool state) {
state ? gd_led_on(LED_PIN) : gd_led_off(LED_PIN);
}
uint32_t board_button_read(void) {
return BUTTON_STATE_ACTIVE == gpio_input_bit_get(BUTTON_PORT, BUTTON_PIN);
}
int board_uart_read(uint8_t* buf, int len) {
#if defined(UART_DEV)
int rxsize = len;
while (rxsize--) {
*(uint8_t*)buf = usart_read(UART_DEV);
buf++;
}
return len;
#else
(void)buf;
(void)len;
return 0;
#endif
}
int board_uart_write(void const* buf, int len) {
#if defined(UART_DEV)
int txsize = len;
while (txsize--) {
usart_write(UART_DEV, *(uint8_t*)buf);
buf++;
}
return len;
#else
(void)buf;
(void)len;
return 0;
#endif
}
#if CFG_TUSB_OS == OPT_OS_NONE
volatile uint32_t system_ticks = 0;
void eclic_mtip_handler(void) {
system_ticks++;
SysTick_Reload(TIMER_TICKS);
}
uint32_t board_millis(void) { return system_ticks; }
#endif
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(char* file, uint32_t line) {
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line
number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line)
*/
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
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