in which case the program springs to IRQ0_FIQ_SOURCE Interrupt handler? I used ADUC7061, IAR ARM.
The ADUC is configured for nested Interrupt vector. ADC and Timer0 Interrupts have low priority 7. XIRQ0 has priority 3. Timer1 has priority 1. UART has high priority 0. I2C Master to face I2C eeprom has priority 5. All Interrupts are IRQ
nested. NoFIQ interrupts are are enable.
I observed that, program always spring to IRQ0_FIQ_SOURCE if I used high I2C Baudrate I2CDIV = 0x1212.
If I set I2CDIV = 0x1F1F or more to reduce I2C Baudrate program runs without Problem.