Raspberry Pi Pico 2.19inch UART LCD User Guide

一. Connection

1.1 Connect to the computer through the USB to serial port module 

PICO Version: 

Generic version: 

1.2 Connect with pico 

The pico version inserts directly: 

Generic version: 

1.3 Connect with Raspberry Pi 4B 

PICO Version: 

Generic version: 

1.4 arduino

PICO Version: 

Generic version: 

2. software instruction set 

(4) Summary of waiting time for instructions

(5) Matters needing attention when issuing instructions:

① The number of instructions must be strictly in accordance with the contents of the above list and enclosed in parentheses.

② Each instruction must be terminated with a semicolon, and each operation must be terminated with a newline. The semicolon character is: ; The newline character is: '\r\n'

③After the system is powered on, it must be ensured that the serial port of the main control is set according to the following initialization parameters: baud rate of 115200, no check bit, 1 stop bit. 

3.Programming example:

1. Master (STM32F103RBT6) serial port initialization: 

void uart_init(u32 bound){

    //    GPIO_InitTypeDef GPIO_InitStructure;

       USART_InitTypeDef USART_InitStructure;

       NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);//USART1_TX   PA.9

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

    GPIO_Init(GPIOA, &GPIO_InitStructure);

    //USART1_RX   PA.10

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

    GPIO_Init(GPIOA, &GPIO_InitStructure); 

   //Usart1 NVIC ÅäÖÃ

    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;

       NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;

       NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;                  //

       NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                          

       NVIC_Init(&NVIC_InitStructure);    

       USART_InitStructure.USART_BaudRate = bound;//Ò»°ãÉèÖÃΪ9600;

       USART_InitStructure.USART_WordLength = USART_WordLength_8b;

       USART_InitStructure.USART_StopBits = USART_StopBits_1;

       USART_InitStructure.USART_Parity = USART_Parity_No;

       USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

       USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

    USART_Init(USART1, &USART_InitStructure);

    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//

    USART_Cmd(USART1, ENABLE);                   

}

void UartSend(char * databuf) //Serial port sending function 

{

                                     u8 i=0;

                                     while (1)

                                     {

 if (databuf[i]!=0)//

         {

                   USART_SendData(USART1, databuf[i]); //

                   while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET){}; //

                   i++;

         }

         else return;

         }

}

int main(void)

{  

    SystemInit();//Initialize RCC and set the main frequency of the system to 72MHZ

    delay_init(72);        //Delayed initialization

    uart_init(115200);   //The serial port is initialized to 115200

    delay_ms(500);

    for(;;)

    {     

    UartSend("SBC(15);DIR(0);FSIMG(2329472,0,0,176,220,0);DIR(1);SBC(10);\r\n");

       CheckBusy();

       UartSend("DC32(0,0,'system is booting ',1);\r\n");

       CheckBusy();

       UartSend("DC24(0,32,'Module model JC -V01',2);\r\n");

       CheckBusy();

       UartSend("DC24(0,56,'2.2寸176X220Resolution',4);\r\n");

       CheckBusy();

       UartSend("DC16(0,80,'Support horizontal and vertical screen switching ',3);\r\n");

       CheckBusy();

       UartSend("DC16(0,96,'Can realize layer overlay function',1);\r\n");

       CheckBusy();

       UartSend("DC16(0,112,'Backlight brightness can be adjuste',1);\r\n");

       CheckBusy();

       UartSend("PS(10,10,14);\r\n");

       CheckBusy();     

       UartSend("BOX(120,140,150,160,3);\r\n");

       CheckBusy();     

CheckBusy();

    while(1);

    }

 }

The effect of the function execution: 

Please contact our salesperson for the complete STM32 test project.

Programming skills:

① If the real-time requirements of the system are very high, there is no need to wait between commands. The main control can determine whether the command has been executed through the three characters of OK\r\n returned by the detection module. Improve the real-time performance of the program. For details, please refer to the complete test code.

②The module allows the serial port to send up to 24 commands at one time, which can greatly improve the efficiency of programming, but it must be noted that the end of the command must be \r\n as the terminator, and the waiting time after sending is the waiting time for the last command time. 

2. Pico（Python）

Note: The resolution of the following example is 376x240 (the red font below needs to be modified according to the actual resolution and image address, and the blue font should be careful not to exceed the actual range) The code can be downloaded from the website according to the serial port screen 

from machine import UART, Pin

import time

import sys

uart1 = UART(1, baudrate=115200, bits=8, parity=None, stop=1,tx=Pin(8), rx=Pin(9))

uart0 = UART(0, baudrate=115200, bits=8, parity=None, stop=1,tx=Pin(0), rx=Pin(1))

txData = u'CLR(0);\r\n'

uart1.write(txData)

time.sleep(0.1)

txData = b"DIR(1);DC24(20,0,\'spotpear\',1);DC24(20,70,\' UART LCD for Pico\',2);BOX(120,140,160,180,3);CIRF(70,150,30,4);DELAYMS (500000);DELAYMS (500000);CLR(0);DIR(1);DELAYMS(400);CLR(6);DELAYMS (400);FSIMG(2097152,0,0,376,240,0);DELAYMS(600);CLR(4);DELAYMS(400);FSIMG(2277632,0,0,376,240,0);;DELAYMS(600);CLR(5);DELAYMS(400);FSIMG(2458112,0,0,376,240,0);\r\n"

uart1.write(txData.decode('unicode'))

time.sleep(0.1)

rxData = bytes()

while uart0.any() > 0:

    rxData += uart0.read(1)

print(rxData.decode('utf-8'))

3. Raspberry Pi 3

Note: The resolution of the following example is 220 x 176 (the red font below needs to be modified according to the actual resolution and image address, and the blue font should be careful not to exceed the actual range) Raspberry Pi 2/3 code can be downloaded from the website 

#include <stdio.h>

#include <wiringPi.h>

#include <wiringSerial.h>

int main()

{

    int fd;

    if(wiringPiSetup() < 0)return 1;

//  if((fd = serialOpen("/dev/ttyAMA0",115200)) < 0)return 1;

    if((fd = serialOpen("/dev/ttyS0",115200)) < 0)return 1;

    printf("serial test start ...\n");

    delay(800);

        serialPrintf(fd,"RESET;\r\n");//reset the LCD

    delay(100);

        serialPrintf(fd,"BPS(115200);\r\n");//Set Baud rate

        delay(100);

    serialPrintf(fd,"CLR(0);\r\n");//Clean LCD with black color

        delay(100);

        serialPrintf(fd,"CLR(1);\r\n");//Clean LCD with red color

        delay(100);

        serialPrintf(fd,"CLR(15);\r\n");//Clean LCD with white color

        delay(100);

 serialPrintf(fd,"DIR(0);\r\n");//Vertical display

        delay(100);

    serialPrintf(fd,"DCV24(0,0,spotpear,0);\r\n");

//display "spotpear" at coordinate（0.0），Font color ：0-black；background color ：default black

        delay(100);

        serialPrintf(fd,"SBC(1);\r\n");//set  background color red

        delay(100);

        serialPrintf(fd,"DCV24(0,24,spotpear,0);\r\n");

//display "spotpear" at coordinate（X-0.Y-24）

        delay(500);

        serialPrintf(fd,"DCV24(0,24,spotpear,3);\r\n");//，Font color ：3-;

        delay(500);

    serialPrintf(fd,"CLR(0);\r\n");//Clean LCD with black color

    delay(500);

    serialPrintf(fd,"DIR(1);\r\n");//Horizontal display

        delay(500);

    serialPrintf(fd,"DCV16(0,24,spotpear,0);\r\n");

        delay(500);

        serialPrintf(fd,"DCV32(0,0,spotpear,0);\r\n");

        delay(500);

        serialPrintf(fd,"CIRF(40,80,20,3);\r\n");//filling circle coordinate（X-40.Y-80,r-20,color-3）

        delay(100);

        serialPrintf(fd,"CIR(70,150,20,1);\r\n");//circle coordinate（X-70.Y-150,r-20,color-1）

        delay(500);

        serialPrintf(fd,"BOXF(70,150,90,170,3);\r\n");//rectangle  coordinate

        delay(500);

        serialPrintf(fd,"BOX(40,80,70,110,3);\r\n");//rectangle  coordinate

        delay(500);

        serialPrintf(fd,"PL(0,0,220,176,6);\r\n");//line: color-6,

        delay(500);

        serialPrintf(fd,"PS(110,110,4);\r\n");//line: color-6,

        delay(1000);

        serialPrintf(fd,"DIR(0);\r\n");//Vertical display

        delay(100);

        serialPrintf(fd,"FSIMG(2097152,0,0,176,220,0);\r\n");

//load picture-1 from LCD（picture loaded by computer UART software in advance）

        delay(500);

        serialPrintf(fd,"FSIMG(2174592,0,0,176,220,0);\r\n");//load picture-2 from LCD

        delay(500);

        serialPrintf(fd,"FSIMG(2252032,0,0,176,220,0);\r\n");

        delay(500);

        serialPrintf(fd,"BL(1023);\r\n");////Backlight ightness:1024-open display

        delay(1000);

        serialPrintf(fd,"BL(0);\r\n");//Backlight ightness:0-stop display

        delay(300);

//        serialPrintf(fd,"RESET;\r\n");//reset*/

//        delay(300);

        serialPrintf(fd,"DCV24(0,0,spotpear,0);\r\n");

        delay(300);

    //while(1)

    //{

    //  serialPutchar(fd,serialGetchar(fd));

    //}

    serialClose(fd);

    return 0;

} 

4. Arduino

Note: The resolution of the following example is 220 x 176 (the red font below needs to be modified according to the actual resolution and image address, and the blue font should be careful not to exceed the actual range) Raspberry Pi 2/3 code can be downloaded from the website 

UARTLCD22-1

/*

  Software serial multple serial test

 Receives from the hardware serial, sends to software serial.

 Receives from software serial, sends to hardware serial.

 The circuit:

 * RX is digital pin 10 (connect to TX of other device)

 * TX is digital pin 11 (connect to RX of other device)

 Note:

 Not all pins on the Mega and Mega 2560 support change interrupts,

 so only the following can be used for RX:

 10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69

 Not all pins on the Leonardo support change interrupts,

 so only the following can be used for RX:

 8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).

 created back in the mists of time

 modified 25 May 2012

 by Tom Igoe

 based on Mikal Hart's example

 This example code is in the public domain.

 */

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup() 

{

  mySerial.begin(115200);

  delay(800);

  mySerial.println("RESET;\r\n");

  delay(100);

  mySerial.println("BPS(115200);\r\n");

  delay(100);

  mySerial.println("CLR(1);\r\n");

  delay(500);

  mySerial.println("CLR(15);\r\n");

  delay(500);

  mySerial.println("DIR(0);\r\n");

  delay(100);

  mySerial.println("DCV24(0,0,spotpear,0);\r\n");

  delay(100);

  mySerial.println("SBC(1);\r\n");

  delay(100);

  mySerial.println("DCV24(0,24,spotpear,0);\r\n");

  delay(300);

  mySerial.println("DCV24(0,24,spotpear,3);\r\n");

  delay(300);

  mySerial.println("CLR(0);\r\n");

  delay(300);

  mySerial.println("FSIMG(2097152,0,0,176,220,0);\r\n");

  delay(300); 

  mySerial.println("FSIMG(2174592,0,0,176,220,0);\r\n");

  delay(300); 

  mySerial.println("FSIMG(2252032,0,0,176,220,0);\r\n");

  delay(300); 

  mySerial.println("BL(1023);\r\n");

  delay(1000);

  mySerial.println("BL(0);\r\n");

  delay(1000);

}

void loop() // run over and over

{

  delay(300);

}

UARTLCD22-2

/*

  Software serial multple serial test

 Receives from the hardware serial, sends to software serial.

 Receives from software serial, sends to hardware serial.

 The circuit:

 * RX is digital pin 10 (connect to TX of other device)

 * TX is digital pin 11 (connect to RX of other device)

 Note:

 Not all pins on the Mega and Mega 2560 support change interrupts,

 so only the following can be used for RX:

 10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69

 Not all pins on the Leonardo support change interrupts,

 so only the following can be used for RX:

 8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).

 created back in the mists of time

 modified 25 May 2012

 by Tom Igoe

 based on Mikal Hart's example

 This example code is in the public domain.

 */

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup() 

{

  mySerial.begin(115200);

  delay(800);

  mySerial.println("RESET;\r\n");

  delay(300);

  mySerial.println("DIR(1);\r\n");

  delay(500);

  mySerial.println("CLR(0);\r\n");

  delay(500);

  mySerial.println("DCV16(0,24,spotpear,0);\r\n");

  delay(300);

  mySerial.println("DCV32(0,0,spotpear,0);\r\n");

  delay(300);

  mySerial.println("CIRF(40,80,20,3);\r\n");

  delay(300);

  mySerial.println("CIR(70,150,20,1);\r\n");

  delay(300);

  mySerial.println("BOXF(70,150,90,170,3);\r\n");

  delay(300);

  mySerial.println("BOX(40,80,70,110,3);\r\n");

  delay(300);

  mySerial.println("PL(0,0,220,176,6);\r\n");

  delay(300);

  mySerial.println("PS(110,110,4);\r\n");

  delay(300);

}

void loop() // run over and over

{

  delay(1000); 

}

5. Picture storage and reading operation instructions

（Note: The following example is a 240x400 picture, this module is 176x220, remember to adjust this parameter during actual operation）

(1) If the total size of the picture that the user needs to store is less than 2M, the picture can be stored in the 2M picture storage space opened up by the module for the user (that is, the high 2M space of FLASH).

    板子的FLASH芯片 

(2) How to obtain the image file to be downloaded:

①Get the picture material with bmp suffix from the art design department (this BMP is in 24-bit format). If the material is a picture in other formats (such as jpeg or png), it must be saved in BMP format. 

The above are all the material pictures in bmp format to be displayed

②Open Image2Lcd.exe modulo software, import the picture, note that the settings in the red box must be consistent with those in the picture, and the resolution of the blue box needs to be determined according to the specific picture size. 

Software interface after importing pictures

③Click the save button at the top left of the software to save it as a bin file, and use the same method to save all the pictures you need as a bin file.

④Open the EzOSD.exe file, select "Merge", select the path in the upper left and double-click to select the bin file just saved from the lower right. The selected file will be displayed in the list on the right. 

Note that I only selected 2 bin files at this time, the first one is a 240x400 full-screen image, the second one is a 90x100 window image, and the total size of the two images is: 210000 bytes

⑤ Click the Merge button at the bottom right to merge and save as Pic.bin 

Note Pic_TBL.TXT is the picture merging information (including offset address and size), as shown below 

At this point, the Pic.bin to be burned has been created.

(3) Download Pic.bin to the module (download using serial terminal)

①Open the serial port terminal SSCOM 3.3 exe, connect the module to the serial port of the computer, and set the parameters such as the baud rate of the terminal. 

② Note that you need to select the Send new line check box. At this time, use the baud rate of 115200 to send the FS_DLOAD(210000); command to the module. After receiving the command, the module will return the information that the FLASH is erasing to the terminal, and wait for the FLASH erasing to complete. 

③After the erasing is completed, you can import the Pic.bin file just generated by pressing the ''Open File'' button. 

The file has been imported, click the ''Send file'' button 

④Wait for the programming to complete.

(5) Display the pictures downloaded to FLASH

①FSIMG(2097152,0,0,240,400,0);

Start to display the first picture at 0,0 of the module, of which 2097152 is the starting address of picture storage. The size of the picture is 240*400.

②FSIMG(2097152+192000,0,0,90,100,0);

Display the second picture, where the offset address is +192000, which means that the second picture is accessed immediately after the first picture. 

Document

• 2.19inch UART LCD for Pico.py
• MF219 STM32F030 UART.zip

Demo-Code

• Keil-51-project.rar
• Keil-neutral-project-with-busy-check
• UARTLCD22-RPi2.tar.gz
• UARTLCD22-RPi3.tar.gz
• UARTLCD22-for-arduino

Software

• EzOSD_v015T9
• Image2Lcd 2.9.rar
• UART-driver
• sscom32E

example-picture

• 1.bin
• 2.bin
• 3.bin
• Pic.BIN
• example-1.bmp
• example-2.bmp
• example-3.bmp

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com