Schrabikus

I have the same problem as igi and strophlex. AOUT_NG + CEM 3379 VCF/VCA. Did you guys solve it?

I should try this method, thanks!

I've made connection diagram if anyone wants to use this cheap and slim module. It's quite noisy. Electrolytic cap (in my case 220uf) soldered to power rails at LED side significantly reduced the noise. ER-OLEDM2002-MBSID_Connection.pdf

Looks like yes!

OLED is working fine! A little noisy, but I think you're right, if it's working - no need change anything. 4-bit is good for hardware compatibility, but not so critical. I'm just wanna deal with it to adapt this display to another projects with no possibility of 8-bit connection. Thanks again!

Thanks for reply, Thorsten. Yesterday I found that i missed CAN interface diode. Soldered it and cyclic reboots are gone. Nex time I should better read paragraph [3] of your MBSID troubleshooting doc :blush: . "|" character started started look normal when i'm change movlw 0x01 ; /////////////////////CGRAOM 248 COGRAM 8 Select ROM A rcall USER_LCD_Data with this. movlw 0x01 ; /////////////////////CGRAOM 248 COGRAM 8 Select ROM A movwf USER_LCD_LAT_D rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr Looks like USER_LCD_Data function not working correctly with this OLED. Sending 0x09 instead to select ROMC makes no sense. Characters still ok. T.K., the question is how should look the 4-bit equivalent of this? movlw 0x01 ; /////////////////////CGRAOM 248 COGRAM 8 Select ROM A movwf USER_LCD_LAT_D rcall USER_LCD_Strobe_Set ; rcall USER_LCD_Strobe_Clr ; transfer upper 4 bit swapf USER_LCD_LAT_D, F ; movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set ; rcall USER_LCD_Strobe_Clr ; transfer lower 4 bit movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr Is that correct or I have to duplicate USER_LCD_LAT_D, F two times more? I have some suspicions about 4-bit init fail. app_lcd.inc

Thanks for reply, Thorsten. Yesterday I found that i missed CAN interface diode. Soldered it and cyclic reboots are gone. Nex time I should better read paragraph [3] of your MBSID troubleshooting doc :blush: . "|" character started started look normal when i'm change movlw 0x01 ; /////////////////////CGRAOM 248 COGRAM 8 Select ROM A rcall USER_LCD_Data with this. movlw 0x01 ; /////////////////////CGRAOM 248 COGRAM 8 Select ROM A movwf USER_LCD_LAT_D rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr Looks like USER_LCD_Data function not working correctly with this OLED. Sending 0x09 instead to select ROMC makes no sense. Characters still ok. T.K., the question is how should look the 4-bit equivalent of this? movlw 0x01 ; /////////////////////CGRAOM 248 COGRAM 8 Select ROM A movwf USER_LCD_LAT_D rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr swapf USER_LCD_LAT_D, F movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr

Little progress! Found this: http://www.midibox.org/dokuwiki/doku.php?id=wilba_mb_6582 Reconnected D2, D3 OLED lines to J5 pins 1,2 according to mb6582 PCB added my custom init sequence to app_lcd.inc in midibox_sid_v2/src (it's USER_LCD_Data and USER_LCD_Cmd functions stores bits 3:2 into port E bits 2:1) Now it loads, with some special character bugs and reboot every 30 seconds (can't figure out what causes it)

As far as I understand garbage on screen in 8-bit mode caused by CAN interface on D3 pin. Maybe there's a way to connect display to MBSID in 8-bit mode?

Tried this OLED with MBSID. With default driver it reboots after "Launching CS" message and characters looks like shifted 1 pixel. There's 8-bit demo code with initialization example. void LCD_initialize(void) { RES=0; Delay(200); RES=1; Delay(200); Write_Command(0x2a); //RE=1 Write_Command(0x71); //Function Selection A Write_Data(0x00); //Disable internal VDD Write_Command(0x28); //RE=0,IS=0 Write_Command(0x08); //display OFF Write_Command(0x2a); //RE=1 Write_Command(0x79); //SD=1 OLED command set is enabled Write_Command(0xD5); //Set Display Clock Divide Ratio/ Oscillator Frequency Write_Command(0x70); Write_Command(0x78); //SD=0 OLED command set is disabled Write_Command(0x08); //5-dot font width, black/white inverting of cursor disable, 1-line or 2-line display mode Write_Command(0x06); //COM0 -> COM31 SEG99 -> SEG0, Write_Command(0x72); //Function Selection B. Select the character no. of character generator Select character ROM Write_Data(0x01); //CGRAOM 248 COGRAM 8 Select ROM A Write_Command(0x2a); //RE=1 Write_Command(0x79); //SD=1 OLED command set is enabled Write_Command(0xDA); //Set SEG Pins Hardware Configuration Write_Command(0x10); //Alternative (odd/even) SEG pin configuration, Disable SEG Left/Right remap Write_Command(0xDC); //Function Selection C Set VSL & GPIO Write_Command(0x00); //Internal VSL represents GPIO pin HiZ, input disabled (always read as low) Write_Command(0x81); //Set Contrast Control Write_Command(0x8F); Write_Command(0xD9); //Set Phase Length Write_Command(0xF1); Write_Command(0xDB); //Set VCOMH Deselect Level ( Write_Command(0x30); //0.83 x VCC Write_Command(0x78); //SD=0 OLED command set is disabled Write_Command(0x28); //RE=0,IS=0 Write_Command(0x01); //Clear Display Write_Command(0x80); //Set DDRAM Address Delay(1000); Write_Command(0x0C); //Display ON Write_CGRAM(font); } I tried with 8-bit connection (OLED's jumpers allows to switch interface modes) and edited clcs/app_lcd.inc so it's initialisation part look like this: ;; initialize LCD movlw 0x2a ; rcall USER_LCD_Cmd movlw 0x71 ; rcall USER_LCD_Cmd movlw 0x0 movwf USER_LCD_LAT_D rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 50 ; 50 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Set rcall USER_LCD_Strobe_Clr movlw 0x28 ; rcall USER_LCD_Cmd movlw 0x08 ; rcall USER_LCD_Cmd movlw 0x2a ; rcall USER_LCD_Cmd movlw 0x79 ; rcall USER_LCD_Cmd movlw 0xD5 ; rcall USER_LCD_Cmd movlw 0x70 ; rcall USER_LCD_Cmd movlw 0x78 ; rcall USER_LCD_Cmd movlw 0x08 ; rcall USER_LCD_Cmd movlw 0x06 ; rcall USER_LCD_Cmd movlw 0x72 ; rcall USER_LCD_Cmd movlw 0x0 movwf USER_LCD_LAT_D rcall USER_LCD_Strobe_Set movlw 10 ; 10 ms delay call MIOS_Delay rcall USER_LCD_Strobe_Clr movlw 10 ; 10 ms delay call MIOS_Delay movlw 0x2a ; rcall USER_LCD_Cmd movlw 0x79 ; rcall USER_LCD_Cmd movlw 0xDA ; rcall USER_LCD_Cmd movlw 0x10 ; rcall USER_LCD_Cmd movlw 0xDC ; rcall USER_LCD_Cmd movlw 0x00 ; rcall USER_LCD_Cmd movlw 0x81 ; rcall USER_LCD_Cmd movlw 0x8F ; rcall USER_LCD_Cmd movlw 0xD9 ; rcall USER_LCD_Cmd movlw 0xF1 ; rcall USER_LCD_Cmd movlw 0xDB ; rcall USER_LCD_Cmd movlw 0x30 ; rcall USER_LCD_Cmd movlw 0x78 ; rcall USER_LCD_Cmd movlw 0x28 ; rcall USER_LCD_Cmd movlw 0x01 ; Clear Display call USER_LCD_Cmd bcf MIOS_LCD_TIMEOUT1, 7, BANKED ; everything ok, make sure that LCD_TIMEOUT, bit 7 is cleared movlw 0x80 ; without these lines the LCD will not work rcall USER_LCD_Cmd ; correctly after a second USER_LCD_Init movlw 100 ; 100 ms delay call MIOS_Delay movlw 0x0c rcall USER_LCD_Cmd movlw 0x00 ; set cursor to zero pos rgoto USER_LCD_CursorSet - initialization ok, works with lcd7 example, characters ok, but when i compile MBSID with this driver - moving garbage on screen. Than I tried to add initialisation sequence from demo code to Hawkeyes app_lcd.inc but no luck in 4-bit mode. Black screen with no signs of life. Was my attempt correct and what should i try next? Jojjelito, you say that there can be problems with USER_LCD_Cmd, could it be the cause of 4-bit mode fail?

Finished mine. Stuck with config with all those SR numbering, but dealed with it after good pot :rofl: Thanks to Illmenator for this project and Jojjelito for segment leds and caps!

Buid guide http://nekaka.com/d/ve1eF4yEKY sammichFM_Base_PCB_Rev_1.pdf sammichFM_CS_PCB_Rev_1.pdf

Here they are. wilba_mbseq_fpd.zip

New tuts, awesome!

T.K. Thanks!!! :BEER:

New tutorials for SEQ v4 will be great!

I was using Midipal with dispatcher app between keyboard and MbSEQ for fast channel switching. Now it's free for another good things =)

Thorsten, thanks! Second improvement is great.

The question that interests me a for long time: Is there any way to convert old forum links (for example index.php?topic=6542.0 or index.php/topic,11460.0.html) to actual format?