【CH579M-R1】+ driving LCD5110 display

hujj

【CH579M-R1】+ driving LCD5110 display [Copy link]

 

After a day of debugging, the LCD5110 display finally drove successfully. The program was ported from STM32, and a logic analyzer was used to adjust the timing. During the debugging process, I made a low-level mistake and forgot to initialize the LCD5110. The timing was adjusted very well, but the LDC just had no display. I was puzzled and finally found the problem. The following figure shows the debugging process:

Here is a screenshot of adjusting the timing using a logic analyzer:

Below is the main.c code:

int main()
{
    UINT8 len,i,dir;
    
    
/* 配置串口1：先配置IO口模式，再配置串口 */   
    GPIOA_SetBits(GPIO_Pin_9);
    GPIOA_ModeCfg(GPIO_Pin_8, GPIO_ModeIN_PU);			  // RXD-配置上拉输入
    GPIOA_ModeCfg(GPIO_Pin_9, GPIO_ModeOut_PP_5mA);		// TXD-配置推挽输出，注意先让IO口输出高电平
    UART1_DefInit();
    
#if 1       // 测试串口发送字符串
    UART1_SendString( TxBuff, sizeof(TxBuff) );

#endif
/* 配置LED和PWM */
    GPIOA_ModeCfg(GPIO_Pin_6, GPIO_ModeOut_PP_5mA); // PA6 - PWM4(LED4)
    GPIOB_ModeCfg(GPIO_Pin_6, GPIO_ModeOut_PP_5mA); // PB6 - LED3
    PWMX_CLKCfg( 4 );
    PWMX_CycleCfg( PWMX_Cycle_64 );
	

    GPIOB_ModeCfg(GPIO_Pin_4, GPIO_ModeOut_PP_5mA); // PB4 - LED_G
    GPIOB_ModeCfg(GPIO_Pin_7, GPIO_ModeOut_PP_5mA); // PB7 - LED_Y
    GPIOB_InverseBits(4);

    LCD_init();           //LCD5110初始化
	display_main();       //显示主界面
	
    // 中断方式：接收数据后发送出去
    UART1_ByteTrigCfg( UART_7BYTE_TRIG );
    trigB = 7;
    UART1_INTCfg( ENABLE, RB_IER_RECV_RDY|RB_IER_LINE_STAT );
    NVIC_EnableIRQ( UART1_IRQn );

#if 1       // 查询方式：接收数据后发送出去
    while(1)
    {
/*        //串口测试
        len = UART1_RecvString(RxBuff);
        if( len )
        {
            UART1_SendString( RxBuff, len );            
        }
*/
		//PWM测试
        if(dir){
            i--;
            if(i == 0){
                dir = 0;
			    GPIOB_InverseBits(GPIO_Pin_4);
			}
        }
        else{
            i++;
            if(i == 64){
                dir = 1;
				GPIOB_InverseBits(GPIO_Pin_7);
			}
		}
        PWMX_ACTOUT( CH_PWM4, i, Low_Level, ENABLE);

//        PWMX_ACTOUT( CH_PWM7, 64-i, Low_Level, ENABLE);
        mDelaymS(10);
        //LED3闪烁测试
        time++;
        if(time > 50){
            time = 0;
            GPIOB_InverseBits(GPIO_Pin_6);

        }
    }
    
#endif    

#if 0      // 中断方式：接收数据后发送出去
    UART1_ByteTrigCfg( UART_7BYTE_TRIG );
    trigB = 7;
    UART1_INTCfg( ENABLE, RB_IER_RECV_RDY|RB_IER_LINE_STAT );
    NVIC_EnableIRQ( UART1_IRQn );
#endif    

//    while(1);    
}

This is the LCD display status:

okhxyyo

Qinheng CH579M-R1 Development Board Review

Summary post: https://en.eeworld.com/bbs/thread-1140005-1-1.html

宋元浩

The OP has plenty of time. I see you applied for quite a few board reviews.

jinglixixi

Song Yuanhao posted on 2020-9-14 09:42 The OP has plenty of time. I see you have applied for quite a few board reviews

Indeed, there seems to be Nanxin SC8905.

jinglixixi

Is the time displayed below the screen the time called by the RTC?

hujj

jinglixixi posted on 2020-9-14 11:44 Indeed, it seems that there is also Nanxin SC8905.

Yes, I was lucky this time and got the opportunity to review both CH579M and SC8905 boards.

hujj

jinglixixi posted on 2020-9-14 11:47 Is the time displayed below the screen the RTC called?

I am going to use the DS1307 calendar module. This time is more convenient and does not need to be set when starting the computer.

hujj

Song Yuanhao posted on 2020-9-14 09:42 The OP has plenty of time. I see you have applied for quite a few board reviews

After retirement, apart from cleaning and going out for exercise, I basically spend my time playing with the board.

jinglixixi

hujj posted on 2020-9-14 12:55 After retirement, I basically spend my time playing with the board, except for cleaning and going out for exercise.

Ah, happiness!!!

jinglixixi

hujj posted on 2020-9-14 12:54 I am going to use the DS1307 calendar module. This time is more convenient and does not need to be set when starting up.

So that’s it, got it!