tinyUSB/hw/bsp/mm32/mm32f327x/mm32f327x_mb39.c

/* 
 * The MIT License (MIT)
 *
 * Copyright (c) 2020 MM32 SE TEAM
 *
 * 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 "mm32_device.h"
#include "hal_conf.h"
#include "tusb.h"
#include "../board.h"

//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void OTG_FS_IRQHandler(void)
{
	dcd_int_handler(TUD_OPT_RHPORT);

}
void USB_DeviceClockInit(void)
{
    /* Select USBCLK source */
    //  RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_Div1);
    RCC->CFGR &= ~(0x3 << 22);
    RCC->CFGR |= (0x1 << 22);

    /* Enable USB clock */
    RCC->AHB2ENR |= 0x1 << 7;
}
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
//--------------------------------------------------------------------+
// LED

void board_led_write(bool state);
extern u32 SystemCoreClock;
const int baudrate = 115200;

void board_init(void)
{
//   usb clock	
  USB_DeviceClockInit();

	if (SysTick_Config(SystemCoreClock / 1000)) {
			while (1);
	}
	NVIC_SetPriority(SysTick_IRQn, 0x0);

  // LED
	GPIO_InitTypeDef  GPIO_InitStruct;
	RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOA, ENABLE);
	GPIO_StructInit(&GPIO_InitStruct);
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource15, GPIO_AF_15);                      //Disable JTDI   AF to  AF15

	GPIO_InitStruct.GPIO_Pin  =  GPIO_Pin_15;
	GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(GPIOA, &GPIO_InitStruct);

	board_led_write(true);

  // UART
	UART_InitTypeDef UART_InitStruct;

	RCC_APB2PeriphClockCmd(RCC_APB2ENR_UART1, ENABLE);   //enableUART1,GPIOAclock
	RCC_AHBPeriphClockCmd(RCC_AHBENR_GPIOA, ENABLE);  //
	//UART initialset

	GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_7);
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_7);


	UART_StructInit(&UART_InitStruct);
	UART_InitStruct.UART_BaudRate = baudrate;
	UART_InitStruct.UART_WordLength = UART_WordLength_8b;
	UART_InitStruct.UART_StopBits = UART_StopBits_1;//one stopbit
	UART_InitStruct.UART_Parity = UART_Parity_No;//none odd-even  verify bit
	UART_InitStruct.UART_HardwareFlowControl = UART_HardwareFlowControl_None;//No hardware flow control
	UART_InitStruct.UART_Mode = UART_Mode_Rx | UART_Mode_Tx; // receive and sent  mode

	UART_Init(UART1, &UART_InitStruct); //initial uart 1
	UART_Cmd(UART1, ENABLE);                    //enable uart 1

	//UART1_TX   GPIOA.9
	GPIO_StructInit(&GPIO_InitStruct);
	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_9;
	GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_Init(GPIOA, &GPIO_InitStruct);

	//UART1_RX    GPIOA.10
	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5;
	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IPU;
	GPIO_Init(GPIOA, &GPIO_InitStruct);

}

//--------------------------------------------------------------------+
// Board porting API
//--------------------------------------------------------------------+

void board_led_write(bool state)
{
	state ? (GPIO_ResetBits(GPIOA,GPIO_Pin_15)):(GPIO_SetBits(GPIOA,GPIO_Pin_15));
}

uint32_t board_button_read(void)
{
  return 0;
}

int board_uart_read(uint8_t* buf, int len)
{
  (void) buf; (void) len;
  return 0;
}

int board_uart_write(void const * buf, int len)
{
	const char *buff = buf;
	while(len){
		while((UART1->CSR & UART_IT_TXIEN) == 0); //The loop is sent until it is finished
		UART1->TDR = (*buff & 0xFF);
		buff++;
		len--;
	}
  return len;
}

#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