Posted on October 18, 2005 at 10:06Hi,
For reasons I switched from one development program(IDE) to an other. Now I have problems using interrupts. My program don't what to enter the ''ADC sample on channel0 is ready'' interrupt service routine.
In main.c
/* --------------------------------
Configuration of ADC
-------------------------------- */
ADC_CSR = 0x0140; //0x0140; interrupt for channel 0 enabled
ADC_CPR = 0x0DF; //0x0FFF; geeft een timer van 0.73 Hz
RCCU_BOOTCR = RCCU_BOOTCR | 0x0020; //Turn on clocks to ADC, etc
// Configure IRQ
/* EIC IRQ configuration ADC12_IRQHandler*/
EIC_SIR18 = ((unsigned int)ADC12IRQHandler)<
/* Enable irq interrupt channels */
EIC_IER0 = CHANNEL(18);
/* EIC interrupt enable register */
EIC_ICR = EIC_IRQ_ENABLE;
/*the ISR that is never entered*/
#pragma userclass (CODE = IRQ)
// A/D IRQ: Executed when A/D Conversion is done
void ADC12IRQHandler(void)__irq
{
IOPORT2_PD ^= 0xF000; /*for test purposes just blick 4 LED's*/
ADC_CSR &= 0xFFFE; // clear sample ready flag
EIC_IPR0 = CHANNEL(18);
}
#pragma userclass (CODE = default)
/********************************EOF**************/
I checked and the ADC is running, with memry view I see samples in the DATA0 register. Also the sample ready and sample over run flags are activated.
Before I used the following code but this code does not work with my new IDE+compiler:
main.c
/* --------------------------------
Configuration of ADC
-------------------------------- */
PCU_BOOTCR = PCU_BOOTCR | 0x0020; //Turn on clocks to ADC, etc
ADC_CSR = 0x0140; //0x0140; interrupt enabled
ADC_CPR = 0x0FFF; //0x0FFF; geeft een timer van 0.73 Hz
/* EIC IRQ configuration */
EIC_SIR18 = ((unsigned int)ADC_IRQ_isr)<
/* EIC interrupt enable register */
EIC_ICR = EIC_IRQ_ENABLE;
/* Enable irq interrupt channels */
EIC_IER0 = CHANNEL(18);
/* switch to SYS mode and enabled interrupts */
#define SWITCH_IRQ_TO_SYS asm('' msr CPSR_c,#0x1F \n stmfd sp!,{lr}'' )
/* switch back to IRQ mode with IRQ disabled */
#define SWITCH_SYS_TO_IRQ asm ('' ldmfd sp!,{lr} \n msr CPSR_c,#0x12|0x80'')
/* END USER CODE FUNCTIONS1 */
void T0_EFTI_isr ( void ) __attribute__ ((interrupt (''IRQ'')));
void ADC_IRQ_isr ( void ) __attribute__ ((interrupt (''IRQ'')));
void ADC_IRQ_isr ( void )
{
SWITCH_IRQ_TO_SYS;
/*60 BEGIN USER CODE ADC_IRQ */
IOPORT2_PD ^= 0xF000; /*for test purposes just blick 4 LED's*/
/* END USER CODE ADC_IRQ */
SWITCH_SYS_TO_IRQ;
// clear IRQ Pending bit
EIC_IPR0 = CHANNEL(18);
}
I tied a lot of things but nothing works, does somebody know what I am doing wrong.
Regards,
Jimmey
