【NXP OKdo E1双核Cortex M33开发板】测评+ 彩色OLED屏显示驱动

jinglixixi

前面介绍了双色OLED屏的显示，那OKdo E1开发板是否能驱动彩色OLED屏呢？

答案是肯定的，其显示效果见图1~图3所示。

图1

图2

图3

有别于I2C接口的双色屏，彩色屏所采用的接口是SPI，故要比双色屏占用更多的I/O口。

那使用哪些引脚呢？

这里OLED屏与MCU的连接关系为：

SCLK--P0.7

DIN --P1.0

RST --P0.15

DC  --P1.5

CS  --P1.8

BLK --P0.0

定义相关引脚输出高低电平的语句为：

#defineOLED_SCLK_Clr()  GPIO_PinWrite(GPIO, 0u,7u, 0)  //CLK

#defineOLED_SCLK_Set()  GPIO_PinWrite(GPIO, 0u,7u, 1)

#defineOLED_SDIN_Clr()  GPIO_PinWrite(GPIO, 1u,0u, 0)  //DIN

#defineOLED_SDIN_Set()  GPIO_PinWrite(GPIO, 1u,0u, 1)

#defineOLED_RST_Clr()  GPIO_PinWrite(GPIO, 0u,15u, 0)  //RES

#defineOLED_RST_Set()  GPIO_PinWrite(GPIO, 0u,15u, 1)

#defineOLED_DC_Clr()   GPIO_PinWrite(GPIO, 1u,5u, 0)  //DC

#defineOLED_DC_Set()   GPIO_PinWrite(GPIO, 1u,5u, 1)

#defineOLED_CS_Clr()   GPIO_PinWrite(GPIO, 1u,8u, 0)  //CS

#defineOLED_CS_Set()   GPIO_PinWrite(GPIO, 1u,8u, 1)

#defineOLED_BLK_Clr()  GPIO_PinWrite(GPIO, 0u,0u, 0)  //BLK

#defineOLED_BLK_Set()  GPIO_PinWrite(GPIO, 0u,0u, 1)

配置引脚为输出功能的函数为：

1. void app_oled_init(void)
   
2. {
   
3. gpio_pin_config_t   gpioPinConfig;
   
4. gpioPinConfig.pinDirection = kGPIO_DigitalOutput;
   
5. gpioPinConfig.outputLogic  = 1u;
   
6. GPIO_PinInit (GPIO, 0u, 7u, &gpioPinConfig);
   
7. GPIO_PinInit (GPIO, 1u, 0u, &gpioPinConfig);
   
8. GPIO_PinInit (GPIO, 0u, 15u, &gpioPinConfig);
   
9. GPIO_PinInit (GPIO, 1u, 5u, &gpioPinConfig);
   
10. GPIO_PinInit (GPIO, 0u, 0u, &gpioPinConfig);
    
11. GPIO_PinInit (GPIO, 1u, 8u, &gpioPinConfig);
    
12. OLED_BLK_Set();
    
13. }

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实现图片显示的函数为：

1. void LCD_ShowPicturea(u16 x1,u16 y1,u16 x2,u16 y2)
   
2. {
   
3. int i;
   
4. LCD_Address_Set(x1,y1,x2,y2);
   
5. for(i=0;i<12800;i++)
   
6. {
   
7. LCD_WR_DATA8(gImage_moled[i*2]);
   
8. LCD_WR_DATA8(gImage_moled[i*2+1]);
   
9. }
   
10. }

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实现图示效果的主程序为：

1. int main(void)
   
2. {
   
3. uint8_t  num,vol=10;
   
4. uint16_t  i,j,k;
   
5. volatile uint8_t s_KeyValue = 0;
   
6. POWER_SetBodVbatLevel(kPOWER_BodVbatLevel1650mv, kPOWER_BodHystLevel50mv, false);
   
7. BOARD_BootClockFROHF96M();
   
8. CLOCK_EnableClock(kCLOCK_Iocon);
   
9. IOCON->PIO[1][24] = (IOCON_FUNC1 | IOCON_MODE_INACT  | IOCON_DIGITAL_EN );
   
10. IOCON->PIO[0][27] = (IOCON_FUNC1 | IOCON_MODE_INACT  | IOCON_DIGITAL_EN );
    
11. CLOCK_DisableClock(kCLOCK_Iocon);
    
12. usart_config_t      s_UARTConfig;
    
13. CLOCK_AttachClk(kFRO12M_to_FLEXCOMM2);
    
14. USART_GetDefaultConfig(&s_UARTConfig);
    
15. s_UARTConfig.baudRate_Bps = 9600;
    
16. s_UARTConfig.enableTx = true;
    
17. s_UARTConfig.enableRx = false;
    
18. USART_Init(USART2, &s_UARTConfig, 12000000);
    
19. USART_WriteBlocking(USART2, cmd, 10);
    
20. SystemCoreClockUpdate();
    
21. if (SysTick_Config(SystemCoreClock / 1000U))
    
22. {
    
23. while (1)
    
24. {
    
25. }
    
26. }
    
27. key_init();
    
28. app_oled_init();
    
29. Lcd_Init();
    
30. LCD_Clear(BLACK);
    
31. BACK_COLOR=BLACK;
    
32. LCD_ShowChinese(28,0,0,32,YELLOW);
    
33. LCD_ShowChinese(60,0,1,32,YELLOW);
    
34. LCD_ShowChinese(92,0,2,32,YELLOW);
    
35. LCD_ShowChinese(20,40,0,16,YELLOW);
    
36. LCD_ShowChinese(36,40,1,16,YELLOW);
    
37. LCD_ShowChinese(52,40,2,16,YELLOW);
    
38. LCD_ShowChinese(68,40,3,16,YELLOW);
    
39. LCD_ShowChinese(84,40,4,16,YELLOW);
    
40. LCD_ShowChinese(100,40,5,16,YELLOW);
    
41. LCD_ShowChinese(116,40,6,16,YELLOW);
    
42. LCD_ShowString(0,60,"   0.96 TFT SPI",YELLOW);
    
43. while(key_read()!= KEY3_NUM);
    
44. LCD_Clear(BLACK);
    
45. LCD_ShowString(10,0,"LCD_W:",RED);      
    
46. LCD_ShowNum(70,0,LCD_W,3,RED);
    
47. LCD_ShowString(10,20,"LCD_H:",RED);
    
48. LCD_ShowNum(70,20,LCD_H,2,RED);
    
49. for(i=0;i<4;i++)
    
50. {
    
51. LCD_ShowPicture(i*40,40,39+i*40,79);
    
52. }
    
53. while(key_read()!= KEY3_NUM);
    
54. LCD_ShowPicturea(0,0,159,79);
    
55. while(1);
    
56. }

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