For info and (welcome) comments about any idea of this strange result when programing the led's blinking.
Evaluating this MCU on LPC845MAX board I exerciced the blinking with red, green and blue led, no problem when I blink red or green led but I obtain a "SYGSTOP hard fault signal" when I tryed activating the blue one.
I using same addresing and register control, the MCU configuration is by default (no config tools, clocks, PIOs or other)... The program does:
1st. Enable SYSCON for PIO0 and PIO1 with, *((unsigned int *)0x40048080U)|= 0x00100040U; // bits 6 and 20 to '1'.
2nd. Activate DIR0 as output (PIO0, red & green) with, *((unsigned int *)0xa0002000U)|= 0x00001001U; // bits 12 and 0 to '1'.
3rd. Activate DIR1 as output (PIO1, blue) with, *((unsigned int *)0xa0002004U)|= 0x00008000U; // bit 15 to '1'.
4th. Write led RO to on / off whit, *((unsigned int *)0xa000000cU)&= 0x0U; *((unsigned int *)0xa000000cU)|= 0x1U;
5th. Write led GRE to on / off whit, *((unsigned int *)0xa0000000U)&= 0x0U; *((unsigned int *)0xa0000000U)|= 0x1U;
6th. Write led BLU to on / off whit, *((unsigned int *)0xa000002FU)&= 0x0U; *((unsigned int *)0xa000002FU)|= 0x1U;
Well, when program executes the 6th action I received the SEGSTOP fault in the probe, excluding this 6th action all work perfectly, also if I writte directly the 0xa000002F location to '0' or to '1' blue led blinks perfect,...
I suspect some more register should be configured in the MCU register but sincerelly I don't have idea what bit or register should be touch.
Many thanks your comments and help