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/**
******************************************************************************
* @file USB_Host/CDC_Standalone/Src/cdc_receive.c
* @author MCD Application Team
* @brief CDC Receive 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 ------------------------------------------------------------*/
#define RX_BUFF_SIZE 0x400 /* Max Received data 1KB */
/* Private typedef -----------------------------------------------------------*/
uint8_t *DEMO_RECEIVE_menu[] =
{
(uint8_t *)" 1 - Start receiving data ",
(uint8_t *)" 2 - Return ",
(uint8_t *)" ",
};
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint16_t xPos, yLinePos;
/* Private function prototypes -----------------------------------------------*/
uint8_t CDC_RX_Buffer[RX_BUFF_SIZE];
/* Private functions ---------------------------------------------------------*/
static void DumpReceivedData(void);
static void ReturnFromReceiveMenu(void);
/**
* @brief Handles CDC Receive Menu.
* @param None
* @retval None
*/
void CDC_Handle_Receive_Menu(void)
{
switch(CdcDemo.Receive_state)
{
case CDC_RECEIVE_IDLE:
CdcDemo.Receive_state = CDC_RECEIVE_WAIT;
CDC_SelectItem(DEMO_RECEIVE_menu, 0);
CdcDemo.select = 0;
USBH_CDC_Stop(&hUSBHost);
BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
BSP_LCD_DisplayStringAtLine(14, (uint8_t *)" ");
BSP_LCD_DisplayStringAtLine(15, (uint8_t *)"Use [Buttons Left/Right] to scroll up/down");
break;
case CDC_RECEIVE_WAIT:
if(CdcDemo.select != PrevSelect)
{
PrevSelect = CdcDemo.select;
CDC_SelectItem(DEMO_RECEIVE_menu, CdcDemo.select & 0x7F);
/* Handle select item */
if(CdcDemo.select & 0x80)
{
switch(CdcDemo.select & 0x7F)
{
case 0:
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
/* Start Reception */
LCD_ClearTextZone();
BSP_LCD_DisplayStringAtLine(3, (uint8_t *)"Receiving data ...");
xPos = 0;
yLinePos = 4;
memset(CDC_RX_Buffer, 0, RX_BUFF_SIZE);
USBH_CDC_Receive(&hUSBHost, CDC_RX_Buffer, RX_BUFF_SIZE);
CdcDemo.Receive_state = CDC_RECEIVE_WAIT;
break;
case 1:
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
USBH_CDC_Stop(&hUSBHost);
ReturnFromReceiveMenu();
break;
default:
break;
}
}
}
break;
default:
break;
}
CdcDemo.select &= 0x7F;
}
/**
* @brief Returns from Receive Menu
* @param None
* @retval None
*/
static void ReturnFromReceiveMenu(void)
{
CdcDemo.state = CDC_DEMO_IDLE;
CdcDemo.select = 0;
/* Restore main menu */
LCD_ClearTextZone();
LCD_LOG_UpdateDisplay();
Menu_Init();
}
/**
* @brief CDC data receive callback.
* @param phost: Host handle
* @retval None
*/
void USBH_CDC_ReceiveCallback(USBH_HandleTypeDef *phost)
{
DumpReceivedData();
USBH_CDC_Receive(&hUSBHost, CDC_RX_Buffer, RX_BUFF_SIZE);
}
/**
* @brief Displays received data
* @param data: Keyboard data to be displayed
* @retval None
*/
static void DumpReceivedData(void)
{
uint16_t size;
uint8_t *ptr = CDC_RX_Buffer;
size = USBH_CDC_GetLastReceivedDataSize(&hUSBHost);
BSP_LCD_SetTextColor(LCD_COLOR_YELLOW);
while(size--)
{
if((*ptr != '\n') && (*ptr != '\r'))
{
if(*ptr == '\t')
{
BSP_LCD_DisplayChar(xPos, LINE(yLinePos), ' ');
}
else
{
BSP_LCD_DisplayChar(xPos, LINE(yLinePos), *ptr);
}
xPos += 7;
}
else if(*ptr == '\n')
{
yLinePos++;
xPos = 0;
}
ptr++;
if(xPos > (BSP_LCD_GetXSize() - 7))
{
xPos = 0;
yLinePos++;
}
if(yLinePos > 13)
{
BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
BSP_LCD_DisplayStringAtLine(15, (uint8_t *)"Use [User Key] to see more data");
/* Key Button in polling */
while(BSP_PB_GetState(BUTTON_KEY) != RESET)
{
/* Wait for User Input */
}
LCD_ClearTextZone();
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_DisplayStringAtLine(3, (uint8_t *)"Receiving data ...");
BSP_LCD_SetTextColor(LCD_COLOR_YELLOW);
xPos = 0;
yLinePos = 4;
}
}
}
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