void glcd_init_device(void)
{
/* STM32CubeMX generated code must be called elsewhere*/
#if defined(GLCD_CONTROLLER_ST7565R)
/* Initialization for ST7565R controller */
/* Make sure chip is de-selected by default */
GLCD_DESELECT();
glcd_reset();
glcd_ST7565R_init();
#else
#error "Controller not supported by STM32F10x"
#endif
}
void glcd_init(void)
{
#if defined(GLCD_CONTROLLER_PCD8544)
/* Set pin directions */
/*
* Set up SPI for AVR8
* Note: AVR's SS pin must be set to output, regardless of whether we
* actually use it. This is a requirement of SPI mster mode.
*/
sbi(DDR(AVR_SS_PORT),AVR_SS_PIN);
/*
* Set MOSI, Master SS, SCK to output (otherwise SPI won't work)
* Must be done even if native SS pin not used
*/
sbi(DDR(CONTROLLER_MOSI_PORT),CONTROLLER_MOSI_PIN);
sbi(DDR(CONTROLLER_SS_PORT),CONTROLLER_SS_PIN);
sbi(DDR(CONTROLLER_SCK_PORT),CONTROLLER_SCK_PIN);
/* Set SS, DC and RST pins to output */
sbi( DDR(CONTROLLER_SS_PORT), CONTROLLER_SS_PIN );
sbi( DDR(CONTROLLER_DC_PORT), CONTROLLER_DC_PIN );
sbi( DDR(CONTROLLER_RST_PORT), CONTROLLER_RST_PIN );
/* Deselect LCD */
GLCD_DESELECT();
/*
* Max allowed SPI clock is 4 MHz from datasheet.
* Enable SPI, set master mode and clock rate to /4 (4MHz with F_CPU=8MHz)
*/
SPCR = (1<<SPE)|(1<<MSTR);
SPSR = 0;
glcd_PCD8544_init();
/* Select screen buffer */
glcd_select_screen(glcd_buffer,&glcd_bbox);
/* Clear screen, we are now ready to go */
glcd_clear();
#elif defined(GLCD_CONTROLLER_ST7565R)
/* Set up GPIO directions */
/*
* Set up SPI for AVR8
* Note: AVR's SS pin must be set to output, regardless of whether we
* actually use it. This is a requirement of SPI mster mode.
*/
sbi(DDR(AVR_SS_PORT),AVR_SS_PIN);
/* Set SCK and MOSI as output */
sbi(DDR(CONTROLLER_SCK_PORT),CONTROLLER_SCK_PIN);
sbi(DDR(CONTROLLER_MOSI_PORT),CONTROLLER_MOSI_PIN);
/*
* Set MISO as input with pullup. This needs to be set for
* SPI to work, even though we never use or read it.
*/
cbi(DDR(CONTROLLER_MISO_PORT),CONTROLLER_MISO_PIN); // B3 MISO as input
sbi(CONTROLLER_MISO_PORT,CONTROLLER_MISO_PIN);
/* Set pin to controller SS as output */
sbi(DDR(CONTROLLER_SS_PORT),CONTROLLER_SS_PIN); // A5
/* Set LCD A0 pin as output */
sbi(DDR(CONTROLLER_A0_PORT),CONTROLLER_A0_PIN); // A6
/* Init SS pin high (i.e LCD deselected) */
sbi(CONTROLLER_SS_PORT,CONTROLLER_SS_PIN);
/* Deselect LCD */
GLCD_DESELECT();
/* MSB first, double speed, SPI mode 0 */
SPCR = (1<<SPE) | (1<<MSTR) | (0<<CPOL) | (0<<CPHA);
sbi(SPSR,SPI2X);
/* Enable interrupts */
sei();
delay_ms(30); /* Example in datasheet does this (20ms) */
glcd_ST7565R_init();
glcd_all_on();
delay_ms(500);
glcd_normal();
glcd_set_start_line(0);
glcd_clear_now();
glcd_select_screen(glcd_buffer,&glcd_bbox);
glcd_clear();
#else
#error "Controller not supported"
#endif /* GLCD_CONTROLLER_* */
}
void glcd_init(void)
{
/* Initialization of device */
/* Declare GPIO and SPI init structures */
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
/* Configuring CS, DC (A0) and RST pin */
/* Peripheral clock init. */
RCC_AHB1PeriphClockCmd(CONTROLLER_SPI_DC_RCC | CONTROLLER_SPI_SS_RCC | \
CONTROLLER_SPI_RST_RCC, ENABLE);
/* CS pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_SS_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_Init(CONTROLLER_SPI_SS_PORT, &GPIO_InitStructure);
/* DC (A0) pin */
GPIO_InitStructure.GPIO_Pin = CONTROLLER_SPI_DC_PIN;
GPIO_Init(CONTROLLER_SPI_DC_PORT, &GPIO_InitStructure);
/* RST 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();
/*
* Configuring SPI:
*/
/* Enable the SPI clock */
SPIx_CLK_INIT(SPIx_CLK, ENABLE);
/* Enable SPI GPIO clocks */
RCC_AHB1PeriphClockCmd(SPIx_SCK_GPIO_CLK | SPIx_MOSI_GPIO_CLK, ENABLE);
/* Connect SPI pins to the corresponding alternate function */
GPIO_PinAFConfig(SPIx_SCK_GPIO_PORT, SPIx_SCK_SOURCE, SPIx_SCK_AF);
GPIO_PinAFConfig(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_SOURCE, SPIx_MOSI_AF);
// GPIO_PinAFConfig(SPIx_MISO_GPIO_PORT, SPIx_MISO_SOURCE, SPIx_MISO_AF);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
/* SPI SCK pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_SCK_PIN;
GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStructure);
/* SPI MOSI pin configuration */
GPIO_InitStructure.GPIO_Pin = SPIx_MOSI_PIN;
GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStructure);
#if 0
GPIO_InitStructure.GPIO_Pin = SPIx_MISO_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
GPIO_Init(SPIx_MISO_GPIO_PORT, &GPIO_InitStructure);
#endif
/* SPI configuration */
SPI_I2S_DeInit(SPIx);
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
/* Clock set to 8MHz */
SPI_InitStructure.SPI_BaudRatePrescaler = SPIx_PRESCALLER;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_Init(SPIx, &SPI_InitStructure);
/* Enable the SPI peripheral */
SPI_Cmd(SPIx, ENABLE);
RCC_AHB1PeriphClockCmd(LCD_LED_GPIO_RCC, ENABLE);
GPIO_InitStructure.GPIO_Pin = LCD_LED_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_Init(LCD_LED_PORT, &GPIO_InitStructure);
#if defined(GLCD_CONTROLLER_PCD8544)
/* Initialisation sequence of controller */
glcd_PCD8544_init();
#elif defined(GLCD_CONTROLLER_ST7565R)
glcd_reset();
glcd_enable_backlight(ENABLE);
glcd_ST7565R_init();
#else
#error "Controller not supported by STM32F0xx"
#endif
}
