void InitialzeLCD(void){
sbi(DDR(LCD_BACKLIGHT_PORT),LCD_BACKLIGHT_PIN); //setting the LCD backlight pin and port
sbi(LCD_BACKLIGHT_PORT,LCD_BACKLIGHT_PIN);
glcd_init(); // initializes the LCD
glcd_set_contrast(50); // sets constrast to default value
glcd_clear(); // clears screen and buffer
}
void glcd_init(void)
{
#if defined(GLCD_CONTROLLER_PCD8544)
/* Initialisation for PCD8544 controller */
/* Declare GPIO and SPI init structures */
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
//NVIC_InitTypeDef NVIC_InitStructure;
/* Initialise structures (which we will overide later) */
GPIO_StructInit(&GPIO_InitStructure);
SPI_StructInit(&SPI_InitStructure);
/* Need to make start up the correct peripheral clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
/* SS pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_SS_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_Init(CONTROLLER_SPI_SS_PORT, &GPIO_InitStructure);
/* DC pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_DC_PIN;
GPIO_Init(CONTROLLER_SPI_DC_PORT, &GPIO_InitStructure);
/* RESET pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_RST_PIN;
GPIO_Init(CONTROLLER_SPI_RST_PORT, &GPIO_InitStructure);
/* Make sure chip is de-selected by default */
GLCD_DESELECT();
/* Set up GPIO for SPI pins */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_SCK_PIN | CONTROLLER_SPI_MISO_PIN | CONTROLLER_SPI_MOSI_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init(CONTROLLER_SPI_PORT, &GPIO_InitStructure);
/* Configure alternate function mode for SPI pins */
GPIO_PinAFConfig(GPIOA,CONTROLLER_SPI_SCK_PINSRC,GPIO_AF_0);
GPIO_PinAFConfig(GPIOA,CONTROLLER_SPI_MOSI_PINSRC,GPIO_AF_0);
GPIO_PinAFConfig(GPIOA,CONTROLLER_SPI_MISO_PINSRC,GPIO_AF_0);
/* Initialise SPI */
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_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32; /* Set clock speed! */
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(CONTROLLER_SPI_NUMBER, &SPI_InitStructure);
/* Enable SPI interupts */
/*
SPI_I2S_ITConfig(CONTROLLER_SPI_NUMBER, SPI_I2S_IT_TXE, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = SPI1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0x00;
NVIC_Init(&NVIC_InitStructure);
*/
/* Enable SPI */
SPI_Cmd(CONTROLLER_SPI_NUMBER, ENABLE);
/* Initialisation sequence of controller */
glcd_reset();
/* Get into the EXTENDED mode! */
glcd_command(PCD8544_FUNCTION_SET | PCD8544_EXTENDED_INSTRUCTION);
/* LCD bias select (4 is optimal?) */
glcd_command(PCD8544_SET_BIAS | 0x2);
/* Set VOP */
glcd_command(PCD8544_SET_VOP | 50); // Experimentally determined
/* Back to standard instructions */
glcd_command(PCD8544_FUNCTION_SET);
/* Normal mode */
glcd_command(PCD8544_DISPLAY_CONTROL | PCD8544_DISPLAY_NORMAL);
glcd_select_screen((uint8_t *)&glcd_buffer,&glcd_bbox);
glcd_set_contrast(50);
glcd_clear();
#else
#error "Controller not supported by STM32F0xx"
#endif
}
void initHardware() {
Switch_Backlight_StartEx(Switch_Backlight_Custom);
CyGlobalIntEnable;
glcd_init();
glcd_set_contrast(72);
}
