STM32 BluePill F103C8

[maxmurugan]

/*-------------------------------------------------------------------------------------- Demo code for DMD panels

DMD_STM32a example code for STM32F103xxx board ------------------------------------------------------------------------------------- / // choose between Parallel ans SPI wiring // comment line below for SPI connection /-------------------------------------------------------------------------------------- Includes --------------------------------------------------------------------------------------*/

include "DMD_Monochrome_Parallel.h"

// Fonts includes

include "st_fonts/UkrRusArial14.h"

//Number of panels in x and y axis

define DISPLAYS_ACROSS 1

define DISPLAYS_DOWN 2

// Enable of output buffering // if true, changes only outputs to matrix after // swapBuffers(true) command // If dual buffer not enabled, all output draw at matrix directly // and swapBuffers(true) cimmand do nothing

define ENABLE_DUAL_BUFFER true

// ----- Select pins for P10 matrix connection ------------ // pins A, B, SCLK may be any digital I/O, pin nOE should be Timer3 PWM pin as PB0,PB1 // if connect as SPI, do not use corresponding MiSO pin - PA6 for SPI1 and PB14 for SPI2

define DMD_PIN_A PA1

define DMD_PIN_B PA4

define DMD_PIN_nOE PB1

//#define DMD_PIN_nOE PA6

define DMD_PIN_SCLK PA15

//#define DMD_PIN_SCLK PB4

// pins for SPI connect // SPI specific pins as CLK and R_DATA has predefined values: // for SPI(1) CLK = PA5 R_DATA = PA7 // for SPI(2) CLK = PB13 R_DATA = PB15 // --------------------------------------------------------

uint8_t pins[] = { PA5, PA7, PA6 }; // CLK , row1, row 2

//Fire up the DMD object as dmd DMD_Monochrome_Parallel dmd(DMD_PIN_A, DMD_PIN_B, DMD_PIN_nOE, DMD_PIN_SCLK, pins, DISPLAYS_ACROSS, DISPLAYS_DOWN,ENABLE_DUAL_BUFFER);

// --- Define fonts ---- // DMD.h old style font DMD_Standard_Font UkrRusArial_F(UkrRusArial14);

// GFX font with sepatate parts for Latin and Cyrillic chars //DMD_GFX_Font GlametrixL((uint8_t)&GlametrixLight12pt7b,(uint8_t)&GlametrixLight12pt8b_rus,0x80,13);

/*-------------------------------------------------------------------------------------- UTF8 char recoding

--------------------------------------------------------------------------------------/ int utf8_rus(char dest, const unsigned char* src) {

uint16_t i, j; for ( i =0, j =0; src[i]; i++) { if ((src[i] == 0xD0 )&& src[i+1]) { dest[j++] = src[++i] - 0x10;} else if ((src[i] == 0xD1 )&& src[i+1]) {dest[j++] = src[++i] + 0x30; } else dest[j++] = src[i]; } dest[j] ='\0'; return j; }

/-------------------------------------------------------------------------------------- setup Called by the Arduino architecture before the main loop begins --------------------------------------------------------------------------------------/

void setup(void) {

// initialize DMD objects // scan DMD row each 700 us dmd.init(700); dmd.setBrightness(80);

}

/-------------------------------------------------------------------------------------- loop Arduino architecture main loop --------------------------------------------------------------------------------------/ void loop(void) {

// text
const char m[] = "Привет Ардуино!";
// transcode message to UTF for use with GFX fonts
char k[30];
utf8_rus(k, (const unsigned char* )m);

// but initially select standard font
dmd.selectFont(&UkrRusArial_F);

// shift steps in pixels for running text (positive - shift right, negative - left)
int8_t step[] = { 1,-1,-2,2 };
// running text shift interval
uint16_t interval = 50;

long prev_step = millis();
uint8_t i = 0, b = 0;
uint8_t test = 255;
uint8_t test_cnt = 4;

 // Cycle for tests:
// -- running texts moving at x and y axis with single and double speed
// -- brightness control
// -- vertical scrolling message
while (1) {
    if ((millis() - prev_step) > interval) {
        if (test >= test_cnt) {
            test = 0;
            // draw message
            dmd.drawMarqueeX(m, -1 * (dmd.stringWidth(m)), 0);
            dmd.swapBuffers(true);

        }
        switch (test) {
          // moving text at x axis
        case 0:
            if (dmd.stepMarquee(step[i], 0) & 1) { // if text is reached screen bounds

                dmd.clearScreen(true);
                i++;
                // if all moving finished
                if (i > 3) {
                  // go to next stage
                    i =0;
                    test++;
                    dmd.drawMarqueeX(m, 0, 0);
                }
                else {
                    if (step[i] < 0) dmd.drawMarqueeX(m, dmd.width() - 1, 0);
                    else dmd.drawMarqueeX(m, -1 * dmd.stringWidth(m), 0);
                }
            }
            else {

                if (step[i] != 1) dmd.drawFilledBox(0, 0, 5, dmd.height() - 1, GRAPHICS_INVERSE);
            }
            // output mem buffer to matrix
            dmd.swapBuffers(true);
            break;

        // change brightness
        case 1:
            b++;
            dmd.setBrightness(b);
            if (b > 200) {
                test++;
                b = 80;
                i = 0;
                dmd.setBrightness(b);
                dmd.drawMarqueeX(m, 0, 0);
            }
            dmd.swapBuffers(true);
            break;

        // moving text at y axis
        case 2:
            if (dmd.stepMarquee(0, step[i]) & 1) {

                // clear the screen
                dmd.clearScreen(true);
                // select new moving speed
                i++;
                // if all moving finished
                if (i > 3) {
                  // go to next stage
                    test++;
                    // select GFX font for vertical scroll
                    dmd.selectFont(&GlametrixL);
                    dmd.drawMarquee(k, strlen(k), dmd.width() - 1, 0, 1);

                }
                else {
                    if (step[i] < 0) dmd.drawMarqueeX(m, 0, dmd.height());
                    else dmd.drawMarqueeX(m, 0, 0);
                }
            }
            // output mem buffer to matrix
            dmd.swapBuffers(true);
            break;

        // vertical scrolling    
        case 3:

            dmd.stepMarquee(-1, 0, 1);
            dmd.swapBuffers(true);
            break;

        }

        prev_step = millis();

    }
}

}

[maxmurugan]

I am trying to STM32 monochrome p10 module

your example code have shown lot of error

I am trying a lot times not possible to clear error

please solve the issue

[board707]

As far I see, you used a wrong STM32 repo. Please read the Compatible libraries section of the library Readme. For STM32F103 board you must use Roger Clarks's repo https://github.com/rogerclarkmelbourne/Arduino_STM32

[maxmurugan]

https://user-images.githubusercontent.com/4962604/206518659-8ec8b6a9-5f3e-4be5-b5e8-e4a5775daa9a.MOV

/*-------------------------------------------------------------------------------------- Demo code for DMD panels

DMD_STM32a example code for STM32F103xxx board ------------------------------------------------------------------------------------- */ // choose between Parallel ans SPI wiring // comment line below for SPI connection

include

define DMD_PARA

/-------------------------------------------------------------------------------------- Includes --------------------------------------------------------------------------------------/

if defined(DMD_PARA)

include "DMD_Monochrome_Parallel.h"

else

include "DMD_MonoChrome_SPI.h"

endif

// Fonts includes

include "st_fonts/SystemFont5x7.h"

pragma GCC diagnostic ignored "-Wnarrowing"

pragma GCC diagnostic ignored "-Woverflow"

include "gfx_fonts/GlametrixLight12pt7b.h"

include "gfx_fonts/GlametrixBold12pt7b.h"

pragma GCC diagnostic warning "-Wnarrowing"

pragma GCC diagnostic warning "-Woverflow"

//Number of panels in x and y axis

define DISPLAYS_ACROSS 1

define DISPLAYS_DOWN 1

// Enable of output buffering // if true, changes only outputs to matrix after // swapBuffers(true) command // If dual buffer not enabled, all output draw at matrix directly // and swapBuffers(true) cimmand do nothing

define ENABLE_DUAL_BUFFER true

// ----- Select pins for P10 matrix connection ------------ // pins A, B, SCLK may be any digital I/O, pin nOE should be Timer3 PWM pin as PB0,PB1 // if connect as SPI, do not use corresponding MiSO pin - PA6 for SPI1 and PB14 for SPI2

define DMD_PIN_A PA0

define DMD_PIN_B PA1

define DMD_PIN_nOE PB1

//#define DMD_PIN_nOE PA6

define DMD_PIN_SCLK PA2

//#define DMD_PIN_SCLK PB4

// pins for SPI connect // SPI specific pins as CLK and R_DATA has predefined values: // for SPI(1) CLK = PA5 R_DATA = PA7 // for SPI(2) CLK = PB13 R_DATA = PB15 // --------------------------------------------------------

//=== Config for Parallel connect ====

if defined(DMD_PARA)

//pins for rows at x axis // example for two rows // all those pins must be selected from same port! uint8_t pins[] = { PA5, PA6, PA7 }; // CLK , row1, row 2

//Fire up the DMD object as dmd DMD_Monochrome_Parallel dmd(DMD_PIN_A, DMD_PIN_B, DMD_PIN_nOE, DMD_PIN_SCLK, pins, DISPLAYS_ACROSS, DISPLAYS_DOWN,ENABLE_DUAL_BUFFER);

else

//=== Config for SPI connect ==== SPIClass dmd_spi(1); DMD_MonoChrome_SPI dmd(DMD_PIN_A, DMD_PIN_B, DMD_PIN_nOE, DMD_PIN_SCLK, DISPLAYS_ACROSS, DISPLAYS_DOWN, dmd_spi, ENABLE_DUAL_BUFFER);

endif

// --- Define fonts ---- // DMD.h old style font DMD_Standard_Font UkrRusArial_F(SystemFont5x7);

// GFX font with sepatate parts for Latin and Cyrillic chars DMD_GFX_Font GlametrixL((uint8_t)&GlametrixLight12pt7b,(uint8_t)&GlametrixLight12pt8b_rus,0x80,13);

RTClock rt (RTCSEL_LSE); // initialise uint32 tt;

byte Sop_packet =0; int str =0; char Serial_data[250]; const unsigned int Message_length =100; char m = "MAXTEQ"; char k[100]; /-------------------------------------------------------------------------------------- UTF8 char recoding

--------------------------------------------------------------------------------------/ int utf8_rus(char dest, const unsigned char* src) {

uint16_t i, j; for ( i =0, j =0; src[i]; i++) { if ((src[i] == 0xD0 )&& src[i+1]) { dest[j++] = src[++i] - 0x10;} else if ((src[i] == 0xD1 )&& src[i+1]) {dest[j++] = src[++i] + 0x30; } else dest[j++] = src[i]; } dest[j] ='\0'; return j; }

/-------------------------------------------------------------------------------------- setup Called by the Arduino architecture before the main loop begins --------------------------------------------------------------------------------------/

void setup(void) {

// initialize DMD objects // scan DMD row each 700 us dmd.init(700); dmd.setBrightness(80); Serial.begin(9600); Serial.print("1236523442");

}

/-------------------------------------------------------------------------------------- loop Arduino architecture main loop --------------------------------------------------------------------------------------/ void loop(void) { // m[] = "MAXTEQ"; // text // transcode message to UTF for use with GFX fonts utf8_rus(k, (const unsigned char* )m); // but initially select standard font dmd.selectFont(&UkrRusArial_F);

// shift steps in pixels for running text (positive - shift right, negative - left)
int8_t step[] = { 1,-1,-2,2 };
// running text shift interval
uint16_t interval = 35;

long prev_step = millis();
uint8_t i = 0, b = 0;
uint8_t test = 255;
uint8_t test_cnt = 4;

 // Cycle for tests:
// -- running texts moving at x and y axis with single and double speed
// -- brightness control
// -- vertical scrolling message
while (1) {
  Get_Rtc_Time();
          while(Serial.available()>0)
    {
       static char Message[Message_length];
       static unsigned int Message_pos = 0;
       char inByte = Serial.read();
       //message comming in 
       if(inByte != '\n' && Sop_packet ==1)
       {
        //add in coming byte in our message
        Message[Message_pos] = inByte;
        Message_pos++;

       }
       //full message received
       else
       {
        //add null char to string
        Message[Message_pos] = '\0';
        if(Message_pos>0)
        {
          m = Message;
          utf8_rus(k, (const unsigned char*)m);
          Serial.print(m);
        }
        Message_pos =0 ;
        Sop_packet =0;
       }
       if(inByte == '[')Sop_packet =1;

    }
    char buf[10];
    sprintf(buf,"%5d",tt);
    dmd.drawString(2,0,buf,sizeof(buf),1); //- fixed messAGE USED FOR CLOCK OR DATE USING DS3231
    if ((millis() - prev_step) > interval) {

            if (dmd.stepMarquee(-1, 0) & 1) { // if text is reached screen bounds

                dmd.clearScreen(true);
                //dmd.drawMarquee(m, strlen(m), dmd.width()-10,(dmd.height() > 0)? 16 : 0, 1);
                dmd.selectFont(&UkrRusArial_F);
                dmd.drawMarquee(k, strlen(k), dmd.width() - 1, 8, 1);
                }
                 dmd.swapBuffers(true);
                 prev_step = millis();                   
            }

    }

} void Get_Rtc_Time() {

if (rt.getTime()!=tt) { tt = rt.getTime();

Serial.print("time is: ");
Serial.println(tt);

} }

[maxmurugan]

Top line get flicker at Start of the scrolling text (Top Line text Fully blink)

how to solve this issue t**Thanks a lot of support ***

[board707]

hi @maxmurugan I transfer this to new issue