stm3210c_eval_lcd.c

STM32F107_ETH_LwIP_V1.0.0.rar

    LCD_SetCursor(Xpos - CurX, Ypos - CurY);
    LCD_WriteRAMWord(TextColor);
    LCD_SetCursor(Xpos + CurY, Ypos + CurX);
    LCD_WriteRAMWord(TextColor);
    LCD_SetCursor(Xpos + CurY, Ypos - CurX);
    LCD_WriteRAMWord(TextColor);
    LCD_SetCursor(Xpos - CurY, Ypos + CurX);
    LCD_WriteRAMWord(TextColor);
    LCD_SetCursor(Xpos - CurY, Ypos - CurX);
    LCD_WriteRAMWord(TextColor);
    if (D < 0)
    { 
      D += (CurX << 2) + 6;
    }
    else
    {
      D += ((CurX - CurY) << 2) + 10;
      CurY--;
    }
    CurX++;
  }
}

/**
  * @brief  Displays a monocolor picture.
  * @param  Pict: pointer to the picture array.
  * @retval None
  */
void LCD_DrawMonoPict(const uint32_t *Pict)
{
  uint32_t index = 0, i = 0;
  LCD_SetCursor(0, 319); 
  LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
  for(index = 0; index < 2400; index++)
  {
    for(i = 0; i < 32; i++)
    {
      if((Pict[index] & (1 << i)) == 0x00)
      {
        LCD_WriteRAM(BackColor);
      }
      else
      {
        LCD_WriteRAM(TextColor);
      }
    }
  }
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}

#ifdef USE_LCD_DrawBMP
/**
  * @brief  Displays a bitmap picture loaded in the SPI Flash.
  * @param  BmpAddress: Bmp picture address in the SPI Flash.
  * @retval None
  */
//void LCD_DrawBMP(uint32_t BmpAddress)
//{
//  uint32_t i = 0, size = 0;
//
//  /* Read bitmap size */
//  SPI_FLASH_BufferRead((uint8_t*)&size, BmpAddress + 2, 4);
//
//  /* get bitmap data address offset */
//  SPI_FLASH_BufferRead((uint8_t*)&i, BmpAddress + 10, 4);
//  
//  size = (size - i)/2;
//
//  SPI_FLASH_StartReadSequence(BmpAddress + i);
//
//  /* Disable SPI1  */
//  SPI_Cmd(SPI1, DISABLE);
//  /* SPI in 16-bit mode */
//  SPI_DataSizeConfig(SPI1, SPI_DataSize_16b);
//
//  /* Enable SPI1  */
//  SPI_Cmd(SPI1, ENABLE);
//  
//  /* Set GRAM write direction and BGR = 1 */
//  /* I/D=00 (Horizontal : decrement, Vertical : decrement) */
//  /* AM=1 (address is updated in vertical writing direction) */
//  LCD_WriteReg(R3, 0x1008);
//
//  LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
//
//  /* Read bitmap data from SPI Flash and send them to LCD */
//  for(i = 0; i < size; i++)
//  {
//    LCD_WriteRAM(__REV_HalfWord(SPI_FLASH_SendHalfWord(0xA5A5)));
//  }
//
//  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
//
//  /* Deselect the FLASH: Chip Select high */
//  SPI_FLASH_CS_HIGH();
//
//  /* Disable SPI1  */
//  SPI_Cmd(SPI1, DISABLE);
//  /* SPI in 8-bit mode */
//  SPI_DataSizeConfig(SPI1, SPI_DataSize_8b);
//
//  /* Enable SPI1  */
//  SPI_Cmd(SPI1, ENABLE);
//
//  /* Set GRAM write direction and BGR = 1 */
//  /* I/D = 01 (Horizontal : increment, Vertical : decrement) */
//  /* AM = 1 (address is updated in vertical writing direction) */
//  LCD_WriteReg(R3, 0x1018);
//}


/**
  * @brief  Displays a bitmap picture loaded in the SPI Flash.
  * @param  BmpAddress: Bmp picture address in the SPI Flash.
  * @retval None
  */
void LCD_DrawBMP(const uint16_t *BmpAddress)
{
  uint32_t i = 0, size = 0;
  /* Read bitmap size */
  size = BmpAddress[1] | (BmpAddress[2] << 16);
  /* get bitmap data address offset */
  i = BmpAddress[5] | (BmpAddress[6] << 16);
  size = (size - i)/2;
  BmpAddress += i/2;
  /* Set GRAM write direction and BGR = 1 */
  /* I/D=00 (Horizontal : decrement, Vertical : decrement) */
  /* AM=1 (address is updated in vertical writing direction) */
  LCD_WriteReg(R3, 0x1008);
  LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
  /* Read bitmap data from SPI Flash and send them to LCD */
  for(i = 0; i < size; i++)
  {
    LCD_WriteRAM(BmpAddress[i]);
  }
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
  /* Set GRAM write direction and BGR = 1 */
  /* I/D = 01 (Horizontal : increment, Vertical : decrement) */
  /* AM = 1 (address is updated in vertical writing direction) */
  LCD_WriteReg(R3, 0x1018);
}
#endif

/**
  * @brief  Reset LCD control line(/CS) and Send Start-Byte
  * @param  Start_Byte: the Start-Byte to be sent
  * @retval None
  */
void LCD_nCS_StartByte(uint8_t Start_Byte)
{
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_RESET);
  SPI_I2S_SendData(LCD_SPI, Start_Byte);
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
}

/**
  * @brief  Writes index to select the LCD register.
  * @param  LCD_Reg: address of the selected register.
  * @retval None
  */
void LCD_WriteRegIndex(uint8_t LCD_Reg)
{
  /* Reset LCD control line(/CS) and Send Start-Byte */
  LCD_nCS_StartByte(START_BYTE | SET_INDEX);
  /* Write 16-bit Reg Index (High Byte is 0) */
  SPI_I2S_SendData(LCD_SPI, 0x00);
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
  SPI_I2S_SendData(LCD_SPI, LCD_Reg);
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}


/**
  * @brief  Reads the selected LCD Register.
  * @param  None
  * @retval LCD Register Value.
  */
uint16_t LCD_ReadReg(uint8_t LCD_Reg)
{
  uint16_t tmp = 0;
  uint8_t i = 0;
  
  /* LCD_SPI prescaler: 4 */
  LCD_SPI->CR1 &= 0xFFC7;
  LCD_SPI->CR1 |= 0x0008;
  /* Write 16-bit Index (then Read Reg) */
  LCD_WriteRegIndex(LCD_Reg);
  /* Read 16-bit Reg */
  /* Reset LCD control line(/CS) and Send Start-Byte */
  LCD_nCS_StartByte(START_BYTE | LCD_READ_REG);
  
  for(i = 0; i < 5; i++)
  {
    SPI_I2S_SendData(LCD_SPI, 0xFF);
    while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
    {
    }
    /* One byte of invalid dummy data read after the start byte */
    while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_RXNE) == RESET)
    {    
    }
    SPI_I2S_ReceiveData(LCD_SPI); 
  }
  SPI_I2S_SendData(LCD_SPI, 0xFF);
  /* Read upper byte */
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
  /* Read lower byte */
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_RXNE) == RESET)
  {
  }
  tmp = SPI_I2S_ReceiveData(LCD_SPI);
  
  
  SPI_I2S_SendData(LCD_SPI, 0xFF);
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
  /* Read lower byte */
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_RXNE) == RESET)
  {
  }
  tmp = ((tmp & 0xFF) << 8) | SPI_I2S_ReceiveData(LCD_SPI);
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
  /* LCD_SPI prescaler: 2 */
  LCD_SPI->CR1 &= 0xFFC7;
  return tmp;
}


/**
  * @brief  Prepare to write to the LCD RAM.
  * @param  None
  * @retval None
  */
void LCD_WriteRAM_Prepare(void)
{
  LCD_WriteRegIndex(R34); /* Select GRAM Reg */
  /* Reset LCD control line(/CS) and Send Start-Byte */
  LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
}


/**
  * @brief  Writes 1 word to the LCD RAM.
  * @param  RGB_Code: the pixel color in RGB mode (5-6-5).
  * @retval None
  */
void LCD_WriteRAMWord(uint16_t RGB_Code)
{
  LCD_WriteRAM_Prepare();
  LCD_WriteRAM(RGB_Code);
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}


/**
  * @brief  Writes to the selected LCD register.
  * @param  LCD_Reg: address of the selected register.
  * @param  LCD_RegValue: value to write to the selected register.
  * @retval None
  */
void LCD_WriteReg(uint8_t LCD_Reg, uint16_t LCD_RegValue)
{
  /* Write 16-bit Index (then Write Reg) */
  LCD_WriteRegIndex(LCD_Reg);
  /* Write 16-bit Reg */
  /* Reset LCD control line(/CS) and Send Start-Byte */
  LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
  SPI_I2S_SendData(LCD_SPI, LCD_RegValue>>8);
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
  SPI_I2S_SendData(LCD_SPI, (LCD_RegValue & 0xFF));
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
  LCD_CtrlLinesWrite(LCD_NCS_GPIO_PORT, LCD_NCS_PIN, Bit_SET);
}


/**
  * @brief  Writes to the LCD RAM.
  * @param  RGB_Code: the pixel color in RGB mode (5-6-5).
  * @retval None
  */
void LCD_WriteRAM(uint16_t RGB_Code)
{
  SPI_I2S_SendData(LCD_SPI, RGB_Code >> 8);
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
  SPI_I2S_SendData(LCD_SPI, RGB_Code & 0xFF);
  while(SPI_I2S_GetFlagStatus(LCD_SPI, SPI_I2S_FLAG_BSY) != RESET)
  {
  }
}


/**
  * @brief  Power on the LCD.
  * @param  None
  * @retval None
  */
void LCD_PowerOn(void)
{ 
  /* Power On sequence ---------------------------------------------------------*/
  LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
  LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
  LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
  LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
  _delay_(20);                 /* Dis-charge capacitor power voltage (200ms) */
  LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
  LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
  _delay_(5);                  /* Delay 50 ms */
  LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
  _delay_(5);                  /* delay 50 ms */
  LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
  LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
  _delay_(5);                  /* delay 50 ms */
  LCD_WriteReg(R7, 0x0173);  /* 262K color and display ON */
}

/**
  * @brief  Enables the Display.
  * @param  None
  * @retval None
  */
void LCD_DisplayOn(void)
{
  /* Display On */
  LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
 
}

/**
  * @brief  Disables the Display.
  * @param  None
  * @retval None
  */
void LCD_DisplayOff(void)
{
  /* Display Off */
  LCD_WriteReg(R7, 0x0);
}

/**
  * @brief  Configures LCD control lines in Output Push-Pull mode.
  * @param  None
  * @retval None
  */
void LCD_CtrlLinesConfig(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Enable GPIO clock */
  RCC_APB2PeriphClockCmd(LCD_NCS_GPIO_CLK, ENABLE);

  /* Configure NCS in Output Push-Pull mode */
  GPIO_InitStructure.GPIO_Pin = LCD_NCS_PIN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);  
}

/**
  * @brief  Sets or reset LCD control lines.
  * @param  GPIOx: where x can be B or D to select the GPIO peripheral.
  * @param  CtrlPins: the Control line. This parameter can be:
  *     @arg LCD_NCS_PIN: Chip Select pin
  * @param  BitVal: specifies the value to be written to the selected bit.
  *   This parameter can be:
  *     @arg Bit_RESET: to clear the port pin
  *     @arg Bit_SET: to set the port pin
  * @retval None
  */
void LCD_CtrlLinesWrite(GPIO_TypeDef* GPIOx, uint16_t CtrlPins, BitAction BitVal)
{
  /* Set or Reset the control line */
  GPIO_WriteBit(GPIOx, CtrlPins, BitVal);
}


/**
  * @brief  Configures the LCD_SPI interface.
  * @param  None
  * @retval None
  */
void LCD_SPIConfig(void)
{
  SPI_InitTypeDef    SPI_InitStructure;
  GPIO_InitTypeDef   GPIO_InitStructure;

  /* Enable GPIO clock */
  RCC_APB2PeriphClockCmd(LCD_SPI_GPIO_CLK | RCC_APB2Periph_AFIO, ENABLE);
  GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE);

  /* Enable SPI clock  */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3, ENABLE);
  
  /* Configure SPI pins: SCK, MISO and MOSI */
  GPIO_InitStructure.GPIO_Pin = LCD_SPI_SCK_PIN | LCD_SPI_MISO_PIN | LCD_SPI_MOSI_PIN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(LCD_SPI_GPIO_PORT, &GPIO_InitStructure);
  
  SPI_I2S_DeInit(LCD_SPI);
  
  /* SPI Config */
  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_Init(LCD_SPI, &SPI_InitStructure);

  /* SPI enable */
  SPI_Cmd(LCD_SPI, ENABLE);
}

#ifndef USE_Delay
/**
  * @brief  Inserts a delay time.
  * @param  nCount: specifies the delay time length.
  * @retval None
  */
static void delay(__IO uint32_t nCount)
{
  __IO uint32_t index = 0; 
  for(index = (100000 * nCount); index != 0; index--)
  {
  }
}
#endif /* USE_Delay*/
/**
  * @}
  */ 

/**
  * @}
  */ 

/**
  * @}
  */
  
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/