Did you try the i2c tool?
Op za 5 dec. 2020 1:58 a.m. schreef Matt DeWall <mdew...@gmail.com>:
> Got it. Ok - looks like my 116 errors were from my later experimenting.
> If I completely disconnect or try other i2c pins, I get 116, so that makes
> sense.
>
> So it looks like when I connect the pins correctly I'm getting the 6 error.
>
> I'm wondering if that just means somehow my device has an i2c address that
> isn't the default that the driver is looking for?
>
> Mat
>
> On Fri, Dec 4, 2020 at 4:25 PM Gregory Nutt <spudan...@gmail.com> wrote:
>
> > Should have mentioned that the error code 6 is defined in
> include/errno.h:
> >
> > #define ENXIO 6
> > #define ENXIO_STR "No such device or address"
> >
> > And errcode code 116 is:
> >
> > #define ETIMEDOUT 116
> > #define ETIMEDOUT_STR "Connection timed out"
> >
> > Which is also reported by as an I2C failure by stm32_i2c_transfer():
> >
> > if (stm32_i2c_sem_waitdone(priv) < 0)
> > {
> > status = stm32_i2c_getstatus(priv);
> > ret = -ETIMEDOUT;
> >
> > On 12/4/2020 6:19 PM, Gregory Nutt wrote:
> > >
> > > As far as I can tell, this looks like an I2C problem. Alan problem
> > > knows better than I.
> > >
> > > I think the failure sequence is:
> > >
> > > fs/vfs:
> > > ioctl(FBIO_UPDATE)
> > >
> > > drivers/video/fb.c ioctl method:
> > > ret = fb->vtable->updatearea(fb->vtable, area);
> > >
> > > drivers/lcd/lcd_framebuffer.c, function lcdfb_updateearea():
> > > ret = pinfo->putrun(row, startx, run, width);
> > >
> > > drivers/lcd/ssd1306.c, putrun method:
> > > Calls ssd1306_sendbyte()
> > >
> > > arch/arm/src/stm32/stm32_i2c.c,
> > > else if (status & I2C_SR1_AF)
> > > {
> > > /* Acknowledge Failure */
> > >
> > > ret = -ENXIO;
> > > }
> > >
> > > So my best guess is that there is some issue with your I2C interface.
> > > It might be failing to acknowledge.
> > >
> > > On 12/4/2020 4:56 PM, Matt DeWall wrote:
> > >> Hello NuttX devs!
> > >>
> > >> I've followed Alan's great tutorial on setting up an OLED on the Blue
> > Pill
> > >> stm32f103-minimum board but running into trouble.
> > >>
> > >> Video:
> > >> https://www.youtube.com/watch?v=TZ4i71ArtRo&t=245s
> > >>
> > >> * I've compiled, flashed, and able to get into nsh
> > >> * The fb driver is listed as /dev/fb0 and the 'fb' app is present
> > >> * When I run the 'fb' app I get repetitive errors, two different
> codes,
> > but
> > >> usually '6' (sometimes '116')
> > >>
> > >> --------------------------
> > >> nsh> fb
> > >> VideoInfo:
> > >> fmt: 0
> > >> xres: 128
> > >> yres: 64
> > >> nplanes: 1
> > >> PlaneInfo (plane 0):
> > >> fbmem: 0x20002f40
> > >> fblen: 1024
> > >> stride: 16
> > >> display: 0
> > >> bpp: 1
> > >> Mapped FB: 0x20002f40
> > >> 0: ( 0, 0) (128, 64)
> > >> ERROR: ioctl(FBIO_UPDATE) failed: 6
> > >> 1: ( 11, 5) (106, 54)
> > >> ERROR: ioctl(FBIO_UPDATE) failed: 6
> > >> 2: ( 22, 10) ( 84, 44)
> > >> ERROR: ioctl(FBIO_UPDATE) failed: 6
> > >> 3: ( 33, 15) ( 62, 34)
> > >> ERROR: ioctl(FBIO_UPDATE) failed: 6
> > >> 4: ( 44, 20) ( 40, 24)
> > >> ERROR: ioctl(FBIO_UPDATE) failed: 6
> > >> 5: ( 55, 25) ( 18, 14)
> > >> ERROR: ioctl(FBIO_UPDATE) failed: 6
> > >> Test finished
> > >>
> > >>
> > >> * I have verified that the screen is working and wired up correctly
> > using
> > >> an Arduino Mega.
> > >> * I'm using this ssd1306 HiLet Go 128X64 OLED:
> > >>
> >
> https://www.amazon.com/gp/product/B06XRBTBTB/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1
> > >> * AFAIK I've done an apples/apples with the tutorial, same board, same
> > >> screen, same wiring, but no luck.
> > >>
> > >> I'm at a loss, as debugging at this low of a level is pretty foreign
> to
> > >> me. It feels like I've missed something easy, but I've triple checked
> > the
> > >> connections and config and not sure where to go from here.
> > >>
> > >> Thanks!
> > >>
> > >> Matt
> > >>
> >
>
