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ajkw
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Joined: 29/06/2011
Location: Australia
Posts: 290

Posted: 10:57am 03 Nov 2021

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Sorry help needed.

When I clean and build I get these errors.

Any ideas please.

Please note, I had to move Cfunctions.h up a folder level so it could be found otherwise there was a error for that as well. Also in the code view there is a error that starg.h cannot be found.

Anthony.

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10013

Posted: 11:07am 03 Nov 2021

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Replace cfunction.h with attached

CFunctions.zip

Can't help with srdarg.h as that should be standard C

ajkw
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Joined: 29/06/2011
Location: Australia
Posts: 290

Posted: 12:49pm 03 Nov 2021

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stdarg.h was not a problem in the end.

Thanks for the updated cfunction.h, all has compiled fine.

I can now draw to every pixel on my OLED

using a fast Csub driver.

Step 2 is sending the contrast command and byte value. With the all-Basic-driver you can access an internal routine of the driver (oled_write_command) to send it but am really not sure how you would get to an internal sub of a csub from MMbasic. There are some other commands that can be sent that can scroll the screen vertically, turn it on/off (saving the ram for when it comes back on) and inverse as well. I'll keep looking but any help appreciated.

Anthony.

matherp
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Location: United Kingdom
Posts: 10013

Posted: 01:02pm 03 Nov 2021

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Quote but am really not sure how you would get to an internal sub of a csub from MMbasic.

Change the main function so it takes an extra parameter. Use this to decide the function you want to use. init, sendcommand, senddata

Below is the main function for the SD CFunction as an example

void main(long *mode, char *p1, long *p2, long *p3, long *p4){
char fn[16];
int j,k,l,m,nextsector, loopend;
DWORD secstart,secoffset;
FATFS *FatFs;
DIR *DIRFS;
FILINFO *fileinfo;
char *s, *p;
#ifndef useSPI2
CFuncRam[17]=SPIBRG; //save any user SPI setup
CFuncRam[18]=SPICON;
CFuncRam[19]=SPICON2;
#endif
if(ExtCurrentConfig[Option->SDCARD_CS] == EXT_BOOT_RESERVED){
SPICON=0x8260;
SPICON2=0xC00;// this is defined in IOPorts.h
SPIBRG=Option->pins[0];
}
FatFs=(void*)&CFuncRam[20];
DIRFS=(void*)&CFuncRam[30];
fileinfo=(void*)&CFuncRam[40];
if(*mode==1 || *mode==6 || *mode==7 || *mode==4) {
for(l=0;l<=p1[0];l++)fn[l]=p1[l];
fn[p1[0]+1]=0;
if(*mode==6)ClearProgram();
}

if(*mode==1 || *mode==6 || *mode==7 || *mode==4){//initialise and mount the SDcard
if(ExtCurrentConfig[Option->SDCARD_CS] != EXT_BOOT_RESERVED)errstring(FR_NOT_MOUNTED);
if(ExtCurrentConfig[SPI_OUT_PIN] != EXT_BOOT_RESERVED) {
ExtCfg(SPI_OUT_PIN, EXT_DIG_OUT, 0); ExtCfg(SPI_OUT_PIN, EXT_RESERVED, 0);
ExtCfg(SPI_INP_PIN, EXT_DIG_IN, 0); ExtCfg(SPI_INP_PIN, EXT_RESERVED, 0);
ExtCfg(SPI_CLK_PIN, EXT_DIG_OUT, 0); ExtCfg(SPI_CLK_PIN, EXT_RESERVED, 0);
}
SPI_PPS_OPEN;
SPICON=0x8260;
SPICON2=0xC00;// this is defined in IOPorts.h

filepos=0;
errstring(pf_mount(FatFs));
}
if(*mode==1){ //open a file
errstring(pf_open(FatFs,&fn[1]));
}
if(*mode==2 ){ //read a file
if(*p2>=0){
errstring(pf_lseek(FatFs,*p2));
}
if(*p3<256){ //return as a string
errstring(pf_read(FatFs,p1+1,*p3,&j ));
p1[0]=j;
} else {
errstring(pf_read(FatFs,p1,*p3,&j ));
}
*p4=j;

}
if(*mode==3){
if(*p2<0)*p2=filepos;
filepos+=*p3;
secstart= *p2 & 0xFFFFFE00; //point to sector start
secoffset= *p2 & 0x1FF; //offset into the sector
errstring(pf_lseek(FatFs,secstart));
s=p1; if(*p3<256) s=p1+1; //move past the length byte if a string
if(secstart!=*p2){ //not sector aligned
p=GetTempMemory(512);
errstring(pf_read(FatFs,p,512,&j ));
errstring(pf_lseek(FatFs,secstart));
//read OK
if(512 < *p3+secoffset){
loopend=512;
nextsector=*p3+secoffset-512;
} else {
loopend=*p3+secoffset;
nextsector=0;
}
for(k=secoffset;k< loopend ;k++){
p[k]=s[k-secoffset]; //write the new data into the buffer
}
errstring(pf_write(FatFs,p,j,&j ));
*p4=j-secoffset;
if(*p4>*p3)*p4=*p3;
if(nextsector){
errstring(pf_write(FatFs,s+(*p3-nextsector),nextsector,&j ));
*p4+=j;
}
errstring(pf_write(FatFs,0,0,&j )); //finish the write

} else {
errstring(pf_write(FatFs,s,*p3,&j ));
*p4=j;
errstring(pf_write(FatFs,0,0,&j ));
}

}
if(*mode==4){
errstring(pf_opendir(FatFs,DIRFS,&fn[1]));
}
if(*mode==5){
errstring(pf_readdir(FatFs,DIRFS,fileinfo));
if(fileinfo->fattrib==22){
errstring(pf_readdir(FatFs,DIRFS,fileinfo));
}
if(fileinfo->fname[0]!=0){
k=1;
if(fileinfo->fattrib & 0x10){
p1[1]='<';
p1[2]='D';
p1[3]='i';
p1[4]='r';
p1[5]='>';
k=6;
}
for(j=0;j<12;j++)p1[j+k]=fileinfo->fname[j];
p1[0]=mystrlen(fileinfo->fname)+k-1;
} else p1[0]=0;
}
if(*mode==6){//load program from SDcard
s=p=GetTempMemory(51200);
k=1;
l=0;
errstring(pf_open(FatFs,&fn[1]));
errstring(pf_lseek(FatFs,0));
do {
errstring(pf_read(FatFs,s,128,&j));
for(m=0;m<j;m++){
if(s[m]==0 && k){
j=m;
k=0;
}
}
s+=j;
l+=j;
} while(j==128);
p[l]=0;
p[l+1]=0;
SaveProgramToFlash(p,0);
}
if(*mode==7){ //save program to SDcard
errstring(pf_open(FatFs,&fn[1]));
errstring(pf_lseek(FatFs,0));
char *b=GetTempMemory(256);
char *p=(void *)ProgFlash;
while(!(*p == 0 || *p == 0xff)) { // normally a LIST ends at the break so this is a safety precaution
if(*p == 1) {
p = llist(b, p); // otherwise expand the line
k=mystrlen(b);
b[k++]=13;
b[k++]=10;
errstring(pf_write(FatFs,b,k,&j ));
if(p[0] == 0 && p[1] == 0) break; // end of the listing ?
}
}
b[0]=0;
b[1]=0;
errstring(pf_write(FatFs,b,2,&j ));
errstring(pf_write(FatFs,0,0,&j ));
}
if(*mode==0){
Option->SDCARD_CS=*p1;
if(p2!=NULL){
Option->pins[0]=*p2;
} else {
Option->pins[0]=2;
}
if(ExtCurrentConfig[Option->SDCARD_CS] != EXT_BOOT_RESERVED){
ExtCfg(Option->SDCARD_CS,EXT_DIG_OUT,0); ExtCfg(Option->SDCARD_CS,EXT_BOOT_RESERVED,0);
}
PinSetBit(Option->SDCARD_CS, TRISCLR);
PinSetBit(Option->SDCARD_CS, LATSET);
}

#ifndef useSPI2
SPIBRG=CFuncRam[17]; //restore user (or my) setup
SPICON=CFuncRam[18];
SPICON2=CFuncRam[19];
#endif
}

Edited 2021-11-03 23:02 by matherp

ajkw
Senior Member

Joined: 29/06/2011
Location: Australia
Posts: 290

Posted: 08:21am 04 Nov 2021

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Thanks again Peter.

I can now send a command byte, and associated data byte where required, to my 1.3" 12C SH1106 from mmbasic via the loadable driver.

In this video mmbasic only draws the initial Hello World screen and then the rest is done via commands to the OLED.

You can change the
Contrast (0 - 256 but 0 is not black)
Turn screen off/on (preserving the ram memory for instant on)
Inverse the display
and
Scroll vertically up or down. The screen wraps around.

Particularly with the contrast and on/off functions I will now be able to significantly reduce the burn-in that I have experienced with these screens.

Cheers,
Anthony.

Video is a link to a MS One drive file.

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 10013

Posted: 08:25am 04 Nov 2021

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Nice job - always great to see someone getting to grips with CFunctions so effectively. Please do post your code for others to see and use

ajkw
Senior Member

Joined: 29/06/2011
Location: Australia
Posts: 290

Posted: 08:58am 04 Nov 2021

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I don't know if I have fully got to grips with cfunctions however I was able to make some changes and managed to compile them. Works for me but I have had a couple of CPU exceptions from MMbasic particularly when first copying a new version of the driver. Seems to settle. Probably can be done better, hope it works for somebody else - no guarantee or warranty.

I have added a parameter that is passed to the driver to control its mode.
sh1106ext(x,i2c addr,pin,pin,height,rot)
0 intialise lcd, eg sh1106ext(0,&h3c,15,16,64,1)
1 write 1 byte to Oled eg sh1106ext(1,&h3c,&hae) - turn off
2 write 2 bytes to Oled eg sh1106ext(2,&h3c,&h81,&h7f) - set contrast

AE/AF Screen on / off
81 is contrast with data of 00 - FF or 0 -255
40-7F is screen offset
A6/A7 is Normal/Inverse

Previously to solve the 2 pixel offset I had I simply added 2 to x in this sub.

void OLED_setxy(int x,int y){
x+=2 ; //move right 2 bytes
oled_write_command(0xB0+y) ; //set page address
oled_write_command(0x10 | ((x>>4) & 0x0F)) ; //set high col address
oled_write_command(x & 0x0f) ; //set low col address

Library save it, you can get CPU Exceptions if used in normal program memory.
SH1106ext.zip

Let me know if it works for you.
Anthony.
Edited 2021-11-06 17:24 by ajkw

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