tinyUSB/demos/host/host_bulk_xfer/main.c

/**************************************************************************/
/*!
    @file     main.c
    @author   hathach (tinyusb.org)

    @section LICENSE

    Software License Agreement (BSD License)

    Copyright (c) 2013, hathach (tinyusb.org)
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
    1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
    3. Neither the name of the copyright holders nor the
    names of its contributors may be used to endorse or promote products
    derived from this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    This file is part of the tinyusb stack.
*/
/**************************************************************************/

//--------------------------------------------------------------------+
// INCLUDE
//--------------------------------------------------------------------+
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "boards/board.h"
#include "tusb.h"

#if defined(__CODE_RED)
  #include <cr_section_macros.h> // TODO remove & verifed
  #include <NXP/crp.h>
  // Variable to store CRP value in. Will be placed automatically
  // by the linker when "Enable Code Read Protect" selected.
  // See crp.h header for more information
  __CRP const unsigned int CRP_WORD = CRP_NO_CRP ;
#endif

//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+

//--------------------------------------------------------------------+
// INTERNAL OBJECT & FUNCTION DECLARATION
//--------------------------------------------------------------------+
OSAL_TASK_FUNCTION( led_blinking_task ) (void* p_task_para);
OSAL_TASK_DEF(led_blinking_task_def, "led blinking", led_blinking_task, 128, LED_BLINKING_APP_TASK_PRIO);
void custom_class_loopback_task (void* p_task_para);

void print_greeting(void);
static inline void wait_blocking_ms(uint32_t ms);

//--------------------------------------------------------------------+
// IMPLEMENTATION
//--------------------------------------------------------------------+

#if TUSB_CFG_OS == TUSB_OS_NONE
// like a real RTOS, this function is a main loop invoking each task in application and never return
void os_none_start_scheduler(void)
{
  while (1)
  {
    tusb_task_runner();
    led_blinking_task(NULL);
    custom_class_loopback_task(NULL);
  }
}
#endif

//TODO try to run with optimization Os
int main(void)
{
  board_init();

  // TODO blocking wait --> systick handler -->  ...... freeRTOS hardfault
  //wait_blocking_ms(1000); // wait a bit for power stable
  
  // print_greeting(); TODO uart output before freeRTOS scheduler start will lead to hardfault
  // find a way to fix this as tusb_init can output to uart when an error occurred

  tusb_init();

  //------------- start OS scheduler (never return) -------------//
  os_none_start_scheduler();

  //------------- this part of code should not be reached -------------//
  hal_debugger_breakpoint();
  while(1) { }
  return 0;
}

//--------------------------------------------------------------------+
// BLINKING TASK
//--------------------------------------------------------------------+
uint8_t custom_read_buffer[4*1024] TUSB_CFG_ATTR_USBRAM;
uint32_t custom_write_buffer[64][64] TUSB_CFG_ATTR_USBRAM; // still 4k
void custom_class_loopback_task (void* p_task_para)
{
  if( tusbh_custom_is_mounted(1, 0, 0) ) // hardcode addr = 1, ignore vendor/product ID
  {
    tusbh_custom_read(1, 0, 0, custom_read_buffer, sizeof(custom_read_buffer));


    if (TUSB_ERROR_NONE == tusbh_custom_write(1, 0, 0, custom_write_buffer, sizeof(custom_write_buffer)))
    {
      static uint32_t magic_number = 1;
      for(uint32_t i = 0; i < 64; i++)
      {
        custom_write_buffer[i][0] = magic_number;
        magic_number += 2;
      }
    }
  }
}

//--------------------------------------------------------------------+
// BLINKING TASK
//--------------------------------------------------------------------+
OSAL_TASK_FUNCTION( led_blinking_task ) (void* p_task_para)
{
  // task init, only executed exactly one time, real RTOS does not need this but none OS does
  {
    static bool is_init = false;
    if (!is_init)
    {
      is_init = true;
      print_greeting();
    }
  }

  static uint32_t led_on_mask = 0;

  OSAL_TASK_LOOP_BEGIN

  osal_task_delay(1000);

  board_leds(led_on_mask, 1 - led_on_mask);
  led_on_mask = 1 - led_on_mask; // toggle

  OSAL_TASK_LOOP_END
}

//--------------------------------------------------------------------+
// HELPER FUNCTION
//--------------------------------------------------------------------+
void print_greeting(void)
{
  printf("\r\n\
--------------------------------------------------------------------\r\n\
-                     Host Demo (a tinyusb example)\r\n\
- if you find any bugs or get any questions, feel free to file an\r\n\
- issue at https://github.com/hathach/tinyusb\r\n\
--------------------------------------------------------------------\r\n\r\n"
  );
}

static inline void wait_blocking_us(volatile uint32_t us)
{
	us *= (SystemCoreClock / 1000000) / 3;
	while(us--);
}

static inline void wait_blocking_ms(uint32_t ms)
{
	wait_blocking_us(ms * 1000);
}