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/**
******************************************************************************
* @file USB_Host/CDC_Standalone/Src/cdc_send.c
* @author MCD Application Team
* @brief CDC Send state machine
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------ */
#include "main.h"
/* Private define ------------------------------------------------------------ */
/* The size of the buffer depends on the user's needs */
#define TX_BUFF_SIZE (64 * 1024)
/* Private typedef ----------------------------------------------------------- */
uint8_t *DEMO_SEND_menu[] = {
(uint8_t *)
" 1 - Send Dummy Data ",
(uint8_t *)
" 2 - Send File ",
(uint8_t *)
" 3 - Return ",
(uint8_t *)
" ",
};
uint8_t BLANK_LINE[] =
" ";
/* Private macro ------------------------------------------------------------- */
/* Private variables --------------------------------------------------------- */
FIL MyFile = { 0 };
uint8_t FilePos = 0;
uint8_t FileOffset = 0;
uint8_t PrevPos = 0;
uint8_t CDC_TX_Buffer[TX_BUFF_SIZE];
uint32_t EnableSendData = 0;
uint32_t use_file = 0;
/* Private function prototypes ----------------------------------------------- */
/* Private functions --------------------------------------------------------- */
static void CDC_SendFile(uint8_t fileidx);
static void ReturnFromSendMenu(void);
static void CDC_ShowFiles(uint8_t offset, uint8_t select);
static void SendFileMenu_Init(void);
/**
* @brief Handles CDC Send Menu.
* @param None
* @retval None
*/
void CDC_Handle_Send_Menu(void)
{
if (CdcSelectMode == CDC_SELECT_MENU)
{
switch (CdcDemo.Send_state)
{
case CDC_SEND_IDLE:
CdcDemo.Send_state = CDC_SEND_WAIT;
CDC_SelectItem(DEMO_SEND_menu, 0);
CdcDemo.select = 0;
PrevPos = 0;
USBH_CDC_Stop(&hUSBHost);
break;
case CDC_SEND_WAIT:
if (CdcDemo.select != PrevSelect)
{
PrevSelect = CdcDemo.select;
CDC_SelectItem(DEMO_SEND_menu, CdcDemo.select & 0x7F);
/* Handle select item */
if (CdcDemo.select & 0x80)
{
switch (CdcDemo.select & 0x7F)
{
case 0:
memset(CDC_TX_Buffer, 0x5A, TX_BUFF_SIZE);
LCD_DbgLog("Sending data ...\n");
USBH_CDC_Transmit(&hUSBHost, CDC_TX_Buffer, TX_BUFF_SIZE);
use_file = 0;
break;
case 1:
if (FileList.ptr > 0)
{
SendFileMenu_Init();
if (FilePos >= 9)
{
CDC_ShowFiles(FileOffset, 9);
}
else
{
CDC_ShowFiles(FileOffset, FilePos);
}
CdcDemo.Send_state = CDC_SEND_SELECT_FILE;
}
else
{
LCD_ErrLog("No file on the microSD\n");
}
break;
case 2: /* Return */
ReturnFromSendMenu();
break;
default:
break;
}
}
}
break;
default:
break;
}
}
else if (CdcSelectMode == CDC_SELECT_FILE)
{
switch (CdcDemo.Send_state)
{
case CDC_SEND_SELECT_FILE:
if (CdcDemo.select & 0x80)
{
CdcDemo.select &= 0x7F;
CdcDemo.Send_state = CDC_SEND_TRANSMIT_FILE;
}
break;
case CDC_SEND_TRANSMIT_FILE:
LCD_DbgLog("Sending file ...\n");
use_file = 1;
CDC_SendFile(FilePos);
CDC_ChangeSelectMode(CDC_SELECT_MENU);
LCD_LOG_UpdateDisplay();
CdcDemo.Send_state = CDC_SEND_WAIT;
break;
default:
break;
}
if (FilePos != PrevPos)
{
if (((FilePos > 9) && (FilePos > PrevPos)) ||
((FilePos >= 9) && (FilePos < PrevPos)))
{
if (FilePos > PrevPos)
{
FileOffset++;
}
else
{
FileOffset--;
}
CDC_ShowFiles(FileOffset, 9);
}
else
{
CDC_ShowFiles(0, FilePos);
}
PrevPos = FilePos;
}
}
CdcDemo.select &= 0x7F;
}
/**
* @brief Probes the CDC joystick state.
* @param state: Joystick state
* @retval None
*/
void CDC_SendFile_ProbeKey(JOYState_TypeDef state)
{
/* Handle File List Selection */
if ((state == JOY_UP) && (FilePos > 0))
{
FilePos--;
}
else if ((state == JOY_DOWN) && (FilePos < (FileList.ptr - 1)))
{
FilePos++;
}
else if (state == JOY_SEL)
{
CdcDemo.select |= 0x80;
}
}
/**
* @brief Demo_Application
* Demo state machine
* @param None
* @retval None
*/
static void SendFileMenu_Init(void)
{
BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
BSP_LCD_DisplayStringAtLine(14,
(uint8_t *)
" ");
BSP_LCD_DisplayStringAtLine(15,
(uint8_t *)
"[User Key] to switch menu ");
BSP_LCD_DisplayStringAtLine(16,
(uint8_t *)
"[Joystick Up/Down] to change settings items");
CDC_ChangeSelectMode(CDC_SELECT_FILE);
}
/**
* @brief Returns from Send Menu
* @param None
* @retval None
*/
static void ReturnFromSendMenu(void)
{
CdcDemo.state = CDC_DEMO_IDLE;
CdcDemo.select = 0;
/* Restore main menu */
LCD_ClearTextZone();
LCD_LOG_UpdateDisplay();
Menu_Init();
}
/**
* @brief Sends file to the root.
* @param fileidx: File index
* @retval None
*/
static void CDC_SendFile(uint8_t fileidx)
{
uint32_t bytesread;
if (FileList.ptr > 0)
{
/* Close any opened file */
f_close(&MyFile);
if (f_open
(&MyFile, (char *)FileList.file[fileidx].name,
FA_OPEN_EXISTING | FA_READ) == FR_OK)
{
/* Fill the buffer to Send */
f_read(&MyFile, CDC_TX_Buffer, TX_BUFF_SIZE, (void *)&bytesread);
/* Send File */
USBH_CDC_Transmit(&hUSBHost, CDC_TX_Buffer, bytesread);
}
else
{
LCD_ErrLog("Cannot open %s file\n", FileList.file[0].name);
}
}
else
{
LCD_ErrLog("No file on the microSD\n");
}
}
/**
* @brief Shows files on the root.
* @param None
* @retval None
*/
static void CDC_ShowFiles(uint8_t offset, uint8_t select)
{
uint8_t i = 0;
if (offset < FileList.ptr)
{
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
for (i = 4; i < 14; i++)
{
BSP_LCD_SetBackColor(LCD_COLOR_BLACK);
BSP_LCD_DisplayStringAtLine(i, BLANK_LINE);
if ((i - 4) < FileList.ptr - offset)
{
if (i == (select + 4))
{
BSP_LCD_SetBackColor(LCD_COLOR_MAGENTA);
}
BSP_LCD_DisplayStringAtLine(i, FileList.file[i - 4 + offset].name);
}
}
}
}
/**
* @brief CDC data transmit callback.
* @param phost: Host handle
* @retval None
*/
void USBH_CDC_TransmitCallback(USBH_HandleTypeDef * phost)
{
uint32_t bytesread;
if (use_file == 1)
{
if (MyFile.fptr >= f_size(& MyFile))
{
f_close(&MyFile);
LCD_DbgLog(">> File sent\n");
use_file = 0;
}
else
{
/* Fill the buffer to Send */
f_read(&MyFile, CDC_TX_Buffer, TX_BUFF_SIZE, (void *)&bytesread);
/* Send File */
USBH_CDC_Transmit(&hUSBHost, CDC_TX_Buffer, bytesread);
}
}
else
{
LCD_DbgLog(">> Data sent\n");
}
}