Hi, For reasons I switched from one development program(IDE) to the KEIL IDE. 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)<<16 | 1; /*set EIC_SIR18 register for ADC to generate interrupts with priority 1*/ /* 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)<<16 | 1; /* 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, Erik Z
There can be many reasons for problems like this and they might be not that obious. The STR7 device (which you seem to use) uses an extensive run-time library which sometimes causes side-effects. Take a look to the MCBSTR7 user's guide (http://www.keil.com/support/man/docs/mcbstr7/mcbstr7_ex_interrupts.htm). It contains several hints for interrupt programming. In case that you cannot figure out the reason of your problem, please provide us with a complete program example (including startup code and project file) that shows your problem (support.intl@keil.com). Reinhard