<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Well it was self-inflicted wound. I found that my Data Direction Register setting was incorrect (MCF5235_EPORT_EPDDR). It was supposed to be NOT(), and it is supposed to be 8bits, not 16 bits as the User Manual has it. RTEMS has it correctly set to 8bits. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thank you all for the time and help.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Ivica<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> rtems-users-bounces@rtems.org [mailto:rtems-users-bounces@rtems.org] <b>On Behalf Of </b>Ivica Eftimovski<br><b>Sent:</b> Friday, May 11, 2012 11:56 AM<br><b>To:</b> rtems-users@rtems.org<br><b>Subject:</b> Coldfire (MCF5235) Interrupt Problem<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>I am just starting with RTEMS and I am trying to interface the MCF5235 BCC board to our existing hardware. I am trying to set it to use *IRQ4, which should have fixed level/priority.<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>When I execute the code noted below, the interrupts are disabled properly, the vector seems set and interrupts are re-enabled. But anytime I ground*IRQ4 (default high) line while my example program is running, I do not vector to the ISR. <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>I fashioned my code using the clock/network/console code as guide, and those work great. <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>Can anyone please give me a hint of what am I doing wrong?<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>------------------------------------- CODE -------------------------------------<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>#define TPU_INT_VECTOR (64+4)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>#define TPU_IRQ_LEVEL 4<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>#define TPU_IRQ_PRIORITY 4<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>void InitTPUInterrupt(void);<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>static rtems_isr TPUInterruptHandler(rtems_vector_number vector);<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>#define TPUInterruptSetPriority() \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> do { \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> MCF5235_INTC0_ICR4 = \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> MCF5235_INTC_ICR_IL(TPU_IRQ_LEVEL) | \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> MCF5235_INTC_ICR_IP(TPU_IRQ_PRIORITY); \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> } while(0)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>#define TPUInterruptSetHandler(_level,_vector,_old_handler) \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> do { \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> rtems_interrupt_disable(_level); \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> MCF5235_INTC0_IMRL &= ~(MCF5235_INTC0_IMRL_INT4 | \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> MCF5235_INTC0_IMRL_MASKALL); \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> handle_status = rtems_interrupt_catch(TPUInterruptHandler, \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> TPU_INT_VECTOR, &old_handler); \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> rtems_interrupt_enable(level); \<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> } while(0)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>void InitTPUInterrupt(void) {<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> rtems_interrupt_level level;<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> rtems_isr_entry old_handler;<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> uint16 status;<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> TPUInterruptSetPriority();<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> TPUInterruptSetHandler(level, TPU_INT_VECTOR, old_handler);<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> asm ("move.w %%sr ,%0;" : "=r"(status));<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>}<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>static rtems_isr<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>TPUInterruptHandler(rtems_vector_number vector)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>{<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> uint volatile chan = vector - TPU_INT_VECTOR;<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> printf("\nGot interrupt number: %i", chan);<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> rtems_interrupt_clear(MCF5235_INTC0_ICR4);<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>}<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>rtems_task Init(<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> rtems_task_argument ignored<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>{<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> ....<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> InitTPUInterrupt();<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'> ...<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>}<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'>------------------------------------- CODE -------------------------------------<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New","serif"'><o:p> </o:p></span></p></div></body></html>