Posted on August 31, 2005 at 06:06Hello, I want to use the external interrupts INT2, INT3, INT4 and INT5 of the STR710 uC.(as inetrrupt only no wake-up)
But for some reason I can not configure the XTI_ registers. I added the following to my STR710.h file:
/* ****************************************** */
/* External interrupt definitions */
/* ****************************************** */
#define XTI_BASE 0xE0001000
#define XTI_SR (*(REG32 IOPORT2_BASE+7))
#define XTI_CTRL (*(REG32 IOPORT2_BASE+9))
#define XTI_MRH (*(REG32 IOPORT2_BASE+10))
#define XTI_MRL (*(REG32 IOPORT2_BASE+11))
#define XTI_TRH (*(REG32 IOPORT2_BASE+12))
#define XTI_TRL (*(REG32 IOPORT2_BASE+13))
#define XTI_PRH (*(REG32 IOPORT2_BASE+14))
#define XTI_PRL (*(REG32 IOPORT2_BASE+15))
In the initialisation of my main.c I wrote the following:
XTI_MRH = 0; // wake-ups 7-15 disabled
XTI_MRL = 0; // wake-ups 0-6 disabled
XTI_PRL = 0; // clear all interrupt flags
XTI_TRH = 0; // wake-up on falling edge
XTI_TRL = 0; // wake-up on falling edge
XTI_CTRL &= 0xFFFE; // wake-up disabled
XTI_CTRL |= 0x0002; //External interrupts enabled
XTI_SR = 0; // no software interrupts
(I also enabled channel 5 of the EIC.)
However, external interrupts of my eval board are not working. If I look in the memory during XTI initilisation nothing happens.
Is this why the external interrupts don't work. My ISR() look like:
void XTI_IRQ_isr ( void )
{
SWITCH_IRQ_TO_SYS;
/* BEGIN USER CODE XTI_IRQ */
IOPORT2_PD ^= 0x8000; //toggle led
XTI_PRH = 0; // resets perhiperal interrupts
XTI_PRL = 0; // resets external interrupts 2 till 5
/* END USER CODE XTI_IRQ */
SWITCH_SYS_TO_IRQ;
// clear IRQ Pending bit
EIC_IPR0 = CHANNEL(5);
}
Has somebody any suggestions?
Regards,
Jimmey
