142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2023 Denis Krasutski
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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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#include "stdio.h"
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#include "debug_uart.h"
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#include "ch32f20x.h"
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#include "bsp/board_api.h"
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#include "board.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 USBHS_IRQHandler(void)
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{
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tud_int_handler(0);
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}
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void board_init(void) {
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/* Disable interrupts during init */
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__disable_irq();
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#if CFG_TUSB_OS == OPT_OS_NONE
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SysTick_Config(SystemCoreClock / 1000);
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#endif
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#if CFG_TUSB_OS == OPT_OS_FREERTOS
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USBHS_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
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#endif
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usart_printf_init(115200);
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// USB HS Clock config
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RCC_USBCLK48MConfig(RCC_USBCLK48MCLKSource_USBPHY);
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RCC_USBHSPLLCLKConfig(RCC_HSBHSPLLCLKSource_HSE);
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RCC_USBHSConfig(RCC_USBPLL_Div2);
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RCC_USBHSPLLCKREFCLKConfig(RCC_USBHSPLLCKREFCLK_4M);
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RCC_USBHSPHYPLLALIVEcmd(ENABLE);
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_USBHS, ENABLE);
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// LED
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LED_CLOCK_EN();
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GPIO_InitTypeDef led_pin_config = {
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.GPIO_Pin = LED_PIN,
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.GPIO_Mode = GPIO_Mode_Out_OD,
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.GPIO_Speed = GPIO_Speed_50MHz,
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};
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GPIO_Init(LED_PORT, &led_pin_config);
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// Button
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BUTTON_CLOCK_EN();
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GPIO_InitTypeDef button_pin_config = {
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.GPIO_Pin = BUTTON_PIN,
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.GPIO_Mode = GPIO_Mode_IPU,
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.GPIO_Speed = GPIO_Speed_50MHz,
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};
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GPIO_Init(BUTTON_PORT, &button_pin_config);
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/* Enable interrupts globally */
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__enable_irq();
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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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{
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system_ticks++;
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}
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uint32_t board_millis(void)
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{
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return system_ticks;
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}
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#endif
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void HardFault_Handler(void)
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{
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__asm("BKPT #0\n");
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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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{
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GPIO_WriteBit(LED_PORT, LED_PIN, state);
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}
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uint32_t board_button_read(void)
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{
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return BUTTON_STATE_ACTIVE == GPIO_ReadInputDataBit(BUTTON_PORT, BUTTON_PIN);
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}
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int board_uart_read(uint8_t *buf, int len)
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{
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(void) buf;
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(void) len;
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return 0;
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}
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int board_uart_write(void const *buf, int len)
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{
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int txsize = len;
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while ( txsize-- )
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{
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uart_write(*(uint8_t const*) buf);
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buf++;
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}
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return len;
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}
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