【GD32L233C-START评测】0.96inch oled屏幕驱动

YangTwo

【GD32L233C-START评测】0.96inch oled屏幕驱动 [复制链接]

本次实验继续利用GD32L233C的外设库函数驱动GPIO引脚来实现OLED屏幕的读写。手边有一块OLED 12864屏幕：

 

我们采用GPIO模拟SPI协议来控制OLED屏幕。首先定义GPIO A1,A2, A3, A4 A5对应OLED屏幕的SCL, SDA, RES, DC, CS引脚

#define OLED_SCL_Clr() gpio_bit_reset(GPIOA, GPIO_PIN_1)     
#define OLED_SCL_Set() gpio_bit_set(GPIOA, GPIO_PIN_1)		

#define OLED_SDA_Clr() gpio_bit_reset(GPIOA, GPIO_PIN_2)     
#define OLED_SDA_Set() gpio_bit_set(GPIOA, GPIO_PIN_2)   	

#define OLED_RES_Clr() gpio_bit_reset(GPIOA, GPIO_PIN_3)     
#define OLED_RES_Set() gpio_bit_set(GPIOA, GPIO_PIN_3)   	

#define OLED_DC_Clr()  gpio_bit_reset(GPIOA, GPIO_PIN_4)      
#define OLED_DC_Set()  gpio_bit_set(GPIOA, GPIO_PIN_4)       
 		     
#define OLED_CS_Clr()  gpio_bit_reset(GPIOA, GPIO_PIN_5)  
#define OLED_CS_Set()  gpio_bit_set(GPIOA, GPIO_PIN_5)   	

 

然后设置引脚为输出模式：

    gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_7 | GPIO_PIN_8);
    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_7 | GPIO_PIN_8);

 

简单的写了一个小球弹跳的例子：

while(1){
             //Draw the Ball based on current parameters
             
             //OLED_Clear();
             My_OLED_Clear();
             /***/
             OLED_DrawCircle(x_pos, y_pos, CircleRadius);
             OLED_DrawCircle(127 - x_pos, 63 - y_pos, CircleRadius);
             OLED_DrawCircle(127 - x_pos, y_pos, CircleRadius);
             OLED_DrawCircle(x_pos, 63 - y_pos, CircleRadius);
             
             OLED_ShowPicture(40,7,50,50,SuperSpaceMan[(index%8)],1);             
             //OLED_ShowPicture(40,7,50,50,MySuperSpaceMan[(index%49)],1);
             index++;
             
             OLED_Refresh();
             
            //Circle Ball Moving State Machine Details:
            switch(CircleDir){
                case UpRight:
                    x_pos++; y_pos--;
                    if((y_pos == CircleRadius) && (x_pos == 127 - CircleRadius)){
                        CircleDir = BottomLeft;
                    }else if(y_pos == CircleRadius){
                        CircleDir = BottomRight;
                    }else if(x_pos == 127 - CircleRadius){
                        CircleDir = UpLeft;
                    }
                    break;
                case UpLeft:
                    x_pos--; y_pos--;
                    if((y_pos == CircleRadius) && (x_pos == CircleRadius)){
                        CircleDir = BottomRight;
                    }else if(y_pos == CircleRadius){
                        CircleDir = BottomLeft;
                    }else if(x_pos == CircleRadius){
                        CircleDir = UpRight;
                    }
                    break;
                case BottomRight:
                    x_pos++; y_pos++;
                    if((x_pos == 127 - CircleRadius) && (y_pos == 63 - CircleRadius)){
                        CircleDir = UpLeft;
                    }else if(x_pos == 127 - CircleRadius){
                        CircleDir = BottomLeft;  
                    }else if(y_pos == 63 - CircleRadius){
                        CircleDir = UpRight;
                    }
                    break;
                case BottomLeft:
                    x_pos--; y_pos++;
                    if((x_pos == CircleRadius)&&(y_pos == 63-CircleRadius)){
                        CircleDir = UpRight;
                    }else if(x_pos == CircleRadius){
                        CircleDir = BottomRight;
                    }else if(y_pos == 63 - CircleRadius){
                        CircleDir = UpLeft;
                    }
                    break;
                default:
                    break;
            }// end of switch case
         }

最后的效果：

使用库函数开发GD32L233C非常的方便，后续看看在屏幕上显示些有意义的内容