[En-Nut-Discussion] Memory card issues in EIR

[Antti Olavi Ahola]

I tried to write onto sd card using the sample code on ethernut  
webpages but execution halts at:
if (NutRegisterDevice(&devNplMmc0, 0, 0))

I debugged it but could not get "lower" than line 287 on nplmmc.c

286    if ((rc = NplRegisterIrqHandler(&sig_MMCD, NplMmCard0InsIrq,  
0)) == 0) {
287        rc = NplRegisterIrqHandler(&sig_NMMCD, NplMmCard0RemIrq, 0);

I can debug into the funtion at line 286 but when I try same at line  
287 debug options, except halt, freeze (I'm using eclipse btw)

Maybe this is related to the earlier discussion about irqs and address  
spaces at EIR but I didn't understood much about those discussions.

One more thing; the eir example application have hackish initiation  
function (see below) which I thought might be the cause but when I  
disabled it(and basically all other unrelated code), the application  
froze even earlier before any memory card related code.

Ps. Stupid question but I don't want to break the house of cards that  
is my environment: is it safe to update nut/os just by copying new  
sources over old ones and rerunning the nutconfigure?

------------------------------------------------------------------
         /* Enable peripherals. */
         outr(PIOA_ASR, inr(PIOA_ASR)
             | _BV(PA12_SPI0_MISO_A)
             | _BV(PA13_SPI0_MOSI_A)
             | _BV(PA14_SPI0_SPCK_A)
             | _BV(PA30_IRQ1_A));

         /* Disable PIO lines used for peripherals. */
         outr(PIOA_PDR, _BV(PA12_SPI0_MISO_A)
             | _BV(PA13_SPI0_MOSI_A)
             | _BV(PA14_SPI0_SPCK_A)
             | _BV(PA30_IRQ1_A));

         /* Chip selects are manually controlled. */
         /* Enable XCS control. */
         outr(PIOA_PER, _BV(VS10XX_XCS_BIT));
         outr(PIOA_SODR, _BV(VS10XX_XCS_BIT));
         outr(PIOA_OER, _BV(VS10XX_XCS_BIT));

         /* Enable XDCS control. */
         outr(PIOB_PER, _BV(VS10XX_XDCS_BIT));
         outr(PIOB_SODR, _BV(VS10XX_XDCS_BIT));
         outr(PIOB_OER, _BV(VS10XX_XDCS_BIT));

         /* Release reset line. */
         outr(PIOB_PER, _BV(VS_XRESET_BIT));
         outr(PIOB_SODR, _BV(VS_XRESET_BIT));
         outr(PIOB_OER, _BV(VS_XRESET_BIT));

         /* DataFlash chip select. */
         outr(PIOA_PER, _BV(PA11_SPI0_NPCS0_A));
         outr(PIOA_SODR, _BV(PA11_SPI0_NPCS0_A));
         outr(PIOA_OER, _BV(PA11_SPI0_NPCS0_A));

         /* Enable clocks. */
         outr(PMC_PCER, _BV(SPI0_ID) | _BV(IRQ1_ID) | _BV(PIOA_ID) |  
_BV(PIOB_ID) | _BV(PIOC_ID));

         /* SPI enable and reset. */
         outr(SPI0_CR, SPI_SPIEN | SPI_SWRST);
         outr(SPI0_CR, SPI_SPIEN);
---------------------------------------------------------------------