/**
* @brief Read register value.
* @param Reg
* @retval None
*/
uint16_t LCD_IO_ReadData(uint16_t Reg)
{
uint32_t readvalue = 0;
/* Change BaudRate Prescaler 8 for Read */
/* Mean SPI baudrate is set to 72/8 = 9 MHz */
heval_Spi.Instance->CR1 &= 0xFFC7;
heval_Spi.Instance->CR1 |= SPI_BAUDRATEPRESCALER_8;
/* Send Reg value to Read */
LCD_IO_WriteReg(Reg);
/* Reset LCD control line(/CS) and Send command */
LCD_CS_LOW();
/* Send Start Byte */
SPIx_Write(START_BYTE | LCD_READ_REG);
/* Read Upper Byte */
SPIx_Write(0xFF);
readvalue = SPIx_Read();
readvalue = readvalue << 8;
readvalue |= SPIx_Read();
/* Recover Baud Rate initial value */
heval_Spi.Instance->CR1 &= 0xFFC7;
heval_Spi.Instance->CR1 |= heval_Spi.Init.BaudRatePrescaler;
HAL_Delay(10);
/* Deselect : Chip Select high */
LCD_CS_HIGH();
return readvalue;
}
/**
* @brief Initialize the LCD
* @retval None
*/
void LCD_IO_Init(void)
{
GPIO_InitTypeDef gpioinitstruct = {0};
/* LCD_CS_GPIO and LCD_DC_GPIO Periph clock enable */
LCD_CS_GPIO_CLK_ENABLE();
LCD_DC_GPIO_CLK_ENABLE();
/* Configure LCD_CS_PIN pin: LCD Card CS pin */
gpioinitstruct.Pin = LCD_CS_PIN;
gpioinitstruct.Mode = GPIO_MODE_OUTPUT_PP;
gpioinitstruct.Pull = GPIO_NOPULL;
gpioinitstruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(SD_CS_GPIO_PORT, &gpioinitstruct);
/* Configure LCD_DC_PIN pin: LCD Card DC pin */
gpioinitstruct.Pin = LCD_DC_PIN;
HAL_GPIO_Init(LCD_DC_GPIO_PORT, &gpioinitstruct);
/* LCD chip select high */
LCD_CS_HIGH();
/* LCD SPI Config */
SPIx_Init();
}
void LCDInit(void)
{
// Initialize SPI Interface
Initialize_SPI();
// set pin directions
LCD_CS_MAKE_OUT();
LCD_CS_HIGH();
LCD_DC_MAKE_OUT();
LCD_RES_MAKE_OUT();
// Toggle reset pin
LCD_RES_LOW();
Delay(1000);
LCD_RES_HIGH();
Delay(1000);
// Send sequence of command
LCDSend(0x21, SEND_CMD); // LCD Extended Commands.
LCDSend(0xC8, SEND_CMD); // Set LCD Vop (Contrast). 0xC8
LCDSend(0x04 | !!(LCD_START_LINE_ADDR & (1u << 6)), SEND_CMD); // Set Temp S6 for start line
LCDSend(0x40 | (LCD_START_LINE_ADDR & ((1u << 6) - 1)), SEND_CMD); // Set Temp S[5:0] for start line
//LCDSend( 0x13, SEND_CMD ); // LCD bias mode 1:48.
LCDSend(0x12, SEND_CMD); // LCD bias mode 1:68.
LCDSend(0x20, SEND_CMD); // LCD Standard Commands, Horizontal addressing mode.
//LCDSend( 0x22, SEND_CMD ); // LCD Standard Commands, Vertical addressing mode.
LCDSend(0x08, SEND_CMD); // LCD blank
LCDSend(0x0C, SEND_CMD); // LCD in normal mode.
// Clear and Update
LCDClear();
LCDUpdate();
}
/**
* @brief Write register value.
* @param pData Pointer on the register value
* @param Size Size of byte to transmit to the register
* @retval None
*/
void LCD_IO_WriteData(uint8_t *pData, uint32_t Size)
{
uint32_t counter = 0;
/* Reset LCD control line CS */
LCD_CS_LOW();
/* Send Start Byte */
SPIx_Write(START_BYTE | LCD_WRITE_REG);
for (counter = Size; counter != 0; counter--)
{
while(((heval_Spi.Instance->SR) & SPI_FLAG_TXE) != SPI_FLAG_TXE)
{
}
/* Need to invert bytes for LCD*/
*((__IO uint8_t*)&heval_Spi.Instance->DR) = *(pData+1);
while(((heval_Spi.Instance->SR) & SPI_FLAG_TXE) != SPI_FLAG_TXE)
{
}
*((__IO uint8_t*)&heval_Spi.Instance->DR) = *pData;
counter--;
pData += 2;
}
/* Wait until the bus is ready before releasing Chip select */
while(((heval_Spi.Instance->SR) & SPI_FLAG_BSY) != RESET)
{
}
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Read register value.
* @param Reg
* @retval None
*/
uint16_t LCD_IO_ReadData(uint16_t Reg)
{
uint32_t readvalue = 0;
/* Send Reg value to Read */
LCD_IO_WriteReg(Reg);
/* Reset LCD control line(/CS) and Send command */
LCD_CS_LOW();
/* Send Start Byte */
SPIx_Write(START_BYTE | LCD_READ_REG);
/* Read Upper Byte */
SPIx_Write(0xFF);
readvalue = SPIx_Read();
readvalue = readvalue << 8;
readvalue |= SPIx_Read();
HAL_Delay(10);
/* Deselect : Chip Select high */
LCD_CS_HIGH();
return readvalue;
}
/**
* @brief Writes register value.
*/
void LCD_IO_WriteData(uint16_t RegValue)
{
/* Set WRX to send data */
LCD_WRX_HIGH();
/* Reset LCD control line(/CS) and Send data */
LCD_CS_LOW();
SPIx_Write(RegValue);
/* Deselect: Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Writes register address.
*/
void LCD_IO_WriteReg(uint8_t Reg)
{
/* Reset WRX to send command */
LCD_WRX_LOW();
/* Reset LCD control line(/CS) and Send command */
LCD_CS_LOW();
SPIx_Write(Reg);
/* Deselect: Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Write register value.
* @param pData Pointer on the register value
* @param Size Size of byte to transmit to the register
* @retval None
*/
void LCD_IO_WriteMultipleData(uint8_t *pData, uint32_t Size)
{
uint32_t counter = 0;
__IO uint32_t data = 0;
/* Reset LCD control line CS */
LCD_CS_LOW();
/* Set LCD data/command line DC to High */
LCD_DC_HIGH();
if (Size == 1)
{
/* Only 1 byte to be sent to LCD - general interface can be used */
/* Send Data */
SPIx_Write(*pData);
}
else
{
/* Several data should be sent in a raw */
/* Direct SPI accesses for optimization */
for (counter = Size; counter != 0; counter--)
{
while(((hnucleo_Spi.Instance->SR) & SPI_FLAG_TXE) != SPI_FLAG_TXE)
{
}
/* Need to invert bytes for LCD*/
*((__IO uint8_t*)&hnucleo_Spi.Instance->DR) = *(pData+1);
while(((hnucleo_Spi.Instance->SR) & SPI_FLAG_TXE) != SPI_FLAG_TXE)
{
}
*((__IO uint8_t*)&hnucleo_Spi.Instance->DR) = *pData;
counter--;
pData += 2;
}
/* Wait until the bus is ready before releasing Chip select */
while(((hnucleo_Spi.Instance->SR) & SPI_FLAG_BSY) != RESET)
{
}
}
/* Empty the Rx fifo */
data = *(&hnucleo_Spi.Instance->DR);
UNUSED(data); /* Remove GNU warning */
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
void lcd_write_data(unsigned char data)
{
OS_CPU_SR_ALLOC();
OS_ENTER_CRITICAL();
LCD_RS_HIGH();
LCD_CS_LOW();
lcd_send_byte(data);
LCD_CS_HIGH();
OS_EXIT_CRITICAL();
}
void lcd_write_cmd(unsigned char cmd)
{
OS_CPU_SR_ALLOC();
OS_ENTER_CRITICAL();
LCD_RS_LOW();
LCD_CS_LOW();
lcd_send_byte(cmd);
LCD_CS_HIGH();
OS_EXIT_CRITICAL();
}
/**
* @brief Writes command to select the LCD register.
* @param LCDReg: Address of the selected register.
* @retval None
*/
void LCD_IO_WriteReg(uint8_t LCDReg)
{
/* Reset LCD control line CS */
LCD_CS_LOW();
/* Set LCD data/command line DC to Low */
LCD_DC_LOW();
/* Send Command */
SPIx_Write(LCDReg);
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Writes data to select the LCD register.
* This function must be used after st7735_WriteReg() function
* @param Data: data to write to the selected register.
* @retval None
*/
void LCD_IO_WriteData(uint8_t Data)
{
/* Reset LCD control line CS */
LCD_CS_LOW();
/* Set LCD data/command line DC to High */
LCD_DC_HIGH();
/* Send Data */
SPIx_Write(Data);
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief register address.
* @param Reg
* @retval None
*/
void LCD_IO_WriteReg(uint8_t Reg)
{
/* Reset LCD control line(/CS) and Send command */
LCD_CS_LOW();
/* Send Start Byte */
SPIx_Write(START_BYTE | SET_INDEX);
/* Write 16-bit Reg Index (High Byte is 0) */
SPIx_Write(0x00);
SPIx_Write(Reg);
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Write register value.
* @param pData Pointer on the register value
* @param Size Size of byte to transmit to the register
* @retval None
*/
void LCD_IO_WriteMultipleData(uint8_t *pData, uint32_t Size)
{
uint32_t counter = 0;
__IO uint32_t data = 0;
/* Reset LCD control line(/CS) and Send data */
LCD_CS_LOW();
/* Send Start Byte */
SPIx_Write(START_BYTE | LCD_WRITE_REG);
if (Size == 1)
{
/* Only 1 byte to be sent to LCD - general interface can be used */
/* Send Data */
SPIx_Write(*pData);
}
else
{
for (counter = Size; counter != 0; counter--)
{
while(((heval_Spi.Instance->SR) & SPI_FLAG_TXE) != SPI_FLAG_TXE)
{
}
/* Need to invert bytes for LCD*/
*((__IO uint8_t*)&heval_Spi.Instance->DR) = *(pData+1);
while(((heval_Spi.Instance->SR) & SPI_FLAG_TXE) != SPI_FLAG_TXE)
{
}
*((__IO uint8_t*)&heval_Spi.Instance->DR) = *pData;
counter--;
pData += 2;
}
/* Wait until the bus is ready before releasing Chip select */
while(((heval_Spi.Instance->SR) & SPI_FLAG_BSY) != RESET)
{
}
}
/* Empty the Rx fifo */
data = *(&heval_Spi.Instance->DR);
UNUSED(data); /* Remove GNU warning */
/* Reset LCD control line(/CS) and Send data */
LCD_CS_HIGH();
}
void LCDSend(unsigned char data, unsigned char cd)
{
LCD_CS_LOW();
if (cd == SEND_CHR)
{
LCD_DC_HIGH();
}
else
{
LCD_DC_LOW();
}
// send data over SPI
SEND_BYTE_SPI();
LCD_CS_HIGH();
}
void LCD_SendByte(unsigned char a)
{
unsigned char i,d;
LCD_CS_HIGH();
LCD_SIO_OUT();
for(i=0;i<8;i++)
{
LCD_SCK_LOW(); //clrbit(LCD_CTRL,E);
d = a&0x80;
if(d)
LCD_SIO_HIGH(); //setbit(LCD_CTRL,RW);
else
LCD_SIO_LOW(); //clrbit(LCD_CTRL,RW);
a<<=1;
LCD_SCK_HIGH(); //setbit(LCD_CTRL,E); //上升弦发送
}
LCD_CS_LOW();
}
/**
* @brief Initializes the SD Card and put it into StandBy State (Ready for
* data transfer).
* @param None
* @retval None
*/
void SD_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
uint8_t counter;
/* SD_CS_GPIO Periph clock enable */
SD_CS_GPIO_CLK_ENABLE();
/* Configure SD_CS_PIN pin: SD Card CS pin */
GPIO_InitStruct.Pin = SD_CS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStruct);
/* LCD chip select line perturbs SD also when the LCD is not used */
/* this is a workaround to avoid sporadic failures during r/w operations */
LCD_CS_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LCD_CS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(LCD_CS_GPIO_PORT, &GPIO_InitStruct);
LCD_CS_HIGH();
/*------------Put SD in SPI mode--------------*/
/* SD SPI Config */
SPIx_Init();
/* SD chip select high */
SD_CS_HIGH();
/* Send dummy byte 0xFF, 10 times with CS high */
/* Rise CS and MOSI for 80 clocks cycles */
for (counter = 0; counter <= 9; counter++)
{
/* Send dummy byte 0xFF */
SD_IO_WriteByte(SD_DUMMY_BYTE);
}
}
/**
* @brief Configures the LCD_SPI interface.
* @param None
* @retval None
*/
void LCD_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Configure the LCD Control pins ------------------------------------------*/
LCD_NCS_GPIO_CLK_ENABLE();
/* Configure NCS in Output Push-Pull mode */
GPIO_InitStruct.Pin = LCD_NCS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW ;
HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStruct);
/* Set or Reset the control line */
LCD_CS_LOW();
LCD_CS_HIGH();
SPIx_Init();
}
/**
* @brief Configures the LCD_SPI interface.
*/
void LCD_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
if(Is_LCD_IO_Initialized == 0)
{
Is_LCD_IO_Initialized = 1;
/* Configure NCS in Output Push-Pull mode */
LCD_WRX_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = LCD_WRX_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_WRX_GPIO_PORT, &GPIO_InitStructure);
LCD_RDX_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = LCD_RDX_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_RDX_GPIO_PORT, &GPIO_InitStructure);
/* Configure the LCD Control pins ----------------------------------------*/
LCD_NCS_GPIO_CLK_ENABLE();
/* Configure NCS in Output Push-Pull mode */
GPIO_InitStructure.Pin = LCD_NCS_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);
/* Set or Reset the control line */
LCD_CS_LOW();
LCD_CS_HIGH();
SPIx_Init();
}
}
/**
* @brief Initializes the SD Card and put it into StandBy State (Ready for
* data transfer).
* @param None
* @retval None
*/
void SD_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
uint8_t counter;
/* SD_CS_GPIO Periph clock enable */
SD_CS_GPIO_CLK_ENABLE();
/* Configure SD_CS_PIN pin: SD Card CS pin */
GPIO_InitStruct.Pin = SD_CS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStruct);
/* Configure LCD_CS_PIN pin: LCD Card CS pin */
GPIO_InitStruct.Pin = LCD_CS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStruct);
LCD_CS_HIGH();
/*------------Put SD in SPI mode--------------*/
/* SD SPI Config */
SPIx_Init();
/* SD chip select high */
SD_CS_HIGH();
/* Send dummy byte 0xFF, 10 times with CS high */
/* Rise CS and MOSI for 80 clocks cycles */
for (counter = 0; counter <= 9; counter++)
{
/* Send dummy byte 0xFF */
SD_IO_WriteByte(SD_DUMMY_BYTE);
}
}
/**
* @brief Reads register value.
* @param RegValue Address of the register to read
* @param ReadSize Number of bytes to read
* @retval Content of the register value
*/
uint32_t LCD_IO_ReadData(uint16_t RegValue, uint8_t ReadSize)
{
uint32_t readvalue = 0;
/* Select: Chip Select low */
LCD_CS_LOW();
/* Reset WRX to send command */
LCD_WRX_LOW();
SPIx_Write(RegValue);
readvalue = SPIx_Read(ReadSize);
/* Set WRX to send data */
LCD_WRX_HIGH();
/* Deselect: Chip Select high */
LCD_CS_HIGH();
return readvalue;
}
void main ()
{
LCD_CS_MAKE_OUT();
LCD_CS_HIGH();
LCDInit();
LCDContrast(0x50);
LCDStr(0, (unsigned char *)"*** OLIMEX *** ", 1);
LCDStr(1, (unsigned char *)" OLIMEXINO ", 0);
LCDStr(2, (unsigned char *)" STM32 + ", 1);
LCDStr(3, (unsigned char *)" MOD-LCD3310 ", 0);
LCDStr(4, (unsigned char *)" using GPIO ", 1);
LCDStr(5, (unsigned char *)" interface ", 0);
while(1){
sleep(10);
}
}
void LCD_IO_WriteData(uint16_t LCDData)
{
/* Reset LCD control line CS */
LCD_CS_LOW();
/* Set LCD data/command line DC to Low */
LCD_DC_HIGH();
//LCD_RW_LOW();
/* Send Command */
//SPIx_Write(LCDReg);
LCD_PORT_Value(LCDData >> 8);
Toggle_LCD_RW();
//LCD_RW_HIGH();
//LCD_RW_LOW();
/* Send Command */
//SPIx_Write(LCDReg);
LCD_PORT_Value(LCDData);
Toggle_LCD_RW();
//LCD_RW_HIGH();
/* Deselect : Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Initializes the LCD
* @retval None
*/
void LCD_IO_Init(void)
{
GPIO_InitTypeDef gpioinitstruct = {0};
/* LCD_CS_GPIO and LCD_DC_GPIO Periph clock enable */
LCD_CS_GPIO_CLK_ENABLE();
LCD_DC_GPIO_CLK_ENABLE();
LCD_RW_GPIO_CLK_ENABLE() ;
/* Configure LCD_CS_PIN pin: LCD Card CS pin */
gpioinitstruct.Pin = LCD_CS_PIN;
gpioinitstruct.Mode = GPIO_MODE_OUTPUT_PP;
gpioinitstruct.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init(LCD_CS_GPIO_PORT, &gpioinitstruct);
/* Configure LCD_DC_PIN pin: LCD Card DC pin */
gpioinitstruct.Pin = LCD_DC_PIN;
HAL_GPIO_Init(LCD_DC_GPIO_PORT, &gpioinitstruct);
/* Configure LCD_RW_PIN pin: LCD Card DC pin */
gpioinitstruct.Pin = LCD_RW_PIN;
HAL_GPIO_Init(LCD_RW_GPIO_PORT, &gpioinitstruct);
/* Configure LCD_RW_PIN pin: LCD Card DC pin */
gpioinitstruct.Pin = LCD_RD_PIN;
HAL_GPIO_Init(LCD_RW_GPIO_PORT, &gpioinitstruct);
/* Configure LCD_RST PIN pin:*/
gpioinitstruct.Pin = LCD_RST_PIN;
HAL_GPIO_Init(LCD_RST_GPIO_PORT, &gpioinitstruct);
/* LCD chip select high */
/*LCD_GPIO_PORT config */
gpioinitstruct.Pin = LCD_DATA_PIN_7;
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
gpioinitstruct.Pin = LCD_DATA_PIN_6;
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
gpioinitstruct.Pin = LCD_DATA_PIN_5;
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
gpioinitstruct.Pin = LCD_DATA_PIN_4; //10
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
gpioinitstruct.Pin = LCD_DATA_PIN_3; //9
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
gpioinitstruct.Pin = LCD_DATA_PIN_2;
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
gpioinitstruct.Pin = LCD_DATA_PIN_1;
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
gpioinitstruct.Pin = LCD_DATA_PIN_0;
HAL_GPIO_Init(LCD_GPIO_PORT, &gpioinitstruct);
////
LCD_CS_HIGH();
/* LCD SPI Config */
// SPIx_Init();
}