RT1052开发板实现SPI接口的OLED屏显示
这里再介绍一下在飞凌RT1052开发板上使用键盘端口（KPP）来驱动SPI接口OLED屏的用法。
OLED屏与RT1052的连接关系如下：
CS --P1.24
DC --P1.26
RST --P1.28
DIN --P1.27 D1
SCLK--P1.25 D0
#define OLED_CS_Clr() GPIO_PinWrite(GPIO1, (24U), 0U);
#define OLED_CS_Set() GPIO_PinWrite(GPIO1, (24U), 1U);
#define OLED_DC_Clr() GPIO_PinWrite(GPIO1, (26U), 0U);
#define OLED_DC_Set() GPIO_PinWrite(GPIO1, (26U), 1U);
#define OLED_RST_Clr() GPIO_PinWrite(GPIO1, (28U), 0U);
#define OLED_RST_Set() GPIO_PinWrite(GPIO1, (28U), 1U);
#define OLED_SDIN_Clr() GPIO_PinWrite(GPIO1, (27U), 0U);
#define OLED_SDIN_Set() GPIO_PinWrite(GPIO1, (27U), 1U);
#define OLED_SCLK_Clr() GPIO_PinWrite(GPIO1, (25U), 0U);
#define OLED_SCLK_Set() GPIO_PinWrite(GPIO1, (25U), 1U);
配置各引脚为输出端口的函数为：
void LCD_GPIO_Cogfig(void)
{
gpio_pin_config_t led_config = {kGPIO_DigitalOutput, 0, kGPIO_NoIntmode};
GPIO_PinInit(GPIO1, (25U), &led_config);
GPIO_PinInit(GPIO1, (27U), &led_config);
GPIO_PinInit(GPIO1, (24U), &led_config);
GPIO_PinInit(GPIO1, (26U), &led_config);
GPIO_PinInit(GPIO1, (28U), &led_config);
GPIO_PinInit(GPIO1, (30U), &led_config);
GPIO_PinInit(GPIO1, (31U), &led_config);
}
该OLED屏的初始化函数为：
void OLED_Init(void)
{
LCD_GPIO_Cogfig();
OLED_RST_Set();
delay_ms(100);
OLED_RST_Clr();
delay_ms(100);
OLED_RST_Set();
OLED_WR_Byte(0xAE,OLED_CMD);//--turn off oled panel
OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
OLED_WR_Byte(0x40,OLED_CMD);//--set start line address Set Mapping RAM OLED_WR_Byte(0x81,OLED_CMD);//--set contrast control register
OLED_WR_Byte(0xCF,OLED_CMD); // Set SEG Output Current Brightness
OLED_WR_Byte(0xA1,OLED_CMD);//--Set SEG/Column Mapping
OLED_WR_Byte(0xC8,OLED_CMD);//Set COM/Row Scan Direction
OLED_WR_Byte(0xA6,OLED_CMD);//--set normal display
OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x3f,OLED_CMD);//--1/64 duty
OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
OLED_WR_Byte(0x00,OLED_CMD);//-not offset
OLED_WR_Byte(0xd5,OLED_CMD);//--set display clock divide ratio/oscillator frequency
OLED_WR_Byte(0x80,OLED_CMD);//--set divide ratio, Set Clock as 100 Frames/Sec
OLED_WR_Byte(0xD9,OLED_CMD);//--set pre-charge period
OLED_WR_Byte(0xF1,OLED_CMD);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
OLED_WR_Byte(0xDA,OLED_CMD);//--set com pins hardware configuration
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0xDB,OLED_CMD);//--set vcomh
OLED_WR_Byte(0x40,OLED_CMD);//Set VCOM Deselect Level
OLED_WR_Byte(0x20,OLED_CMD);//-Set Page Addressing Mode (0x00/0x01/0x02)
OLED_WR_Byte(0x02,OLED_CMD);//
OLED_WR_Byte(0x8D,OLED_CMD);//--set Charge Pump enable/disable
OLED_WR_Byte(0x14,OLED_CMD);//--set(0x10) disable
OLED_WR_Byte(0xA4,OLED_CMD);// Disable Entire Display On (0xa4/0xa5)
OLED_WR_Byte(0xA6,OLED_CMD);// Disable Inverse Display On (0xa6/a7)
OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
OLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/
OLED_Clear();
OLED_Set_Pos(0,0);
}
SPI 接口OLED屏显示效果
实现图示效果的主程序为：
int main(void)
{
uint16_t i=0;
gpio_pin_config_t led_config = {kGPIO_DigitalOutput, 0, kGPIO_NoIntmode};
BOARD_ConfigMPU();
BOARD_InitPins();
BOARD_BootClockRUN();
BOARD_InitDebugConsole();
GPIO_PinInit(EXAMPLE_LED_GPIO, EXAMPLE_LED_GPIO_PIN, &led_config);
delay();
OLED_Init();
OLED_Clear();
OLED_ShowString(8,0,"OK1052-C");
OLED_ShowString(8,2,"OLED TEST");
OLED_ShowString(8,4,"JINGLIXIXI");
OLED_ShowString(8,6,"2018/11/8");
while(1);
}
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