ouch.
I think SCB_SHPR(shpr_id) should be kept as is, but the comments are not
helpful, and yes, the current definitions of SCB_SHPR1..3 are really the same
as
SCB_SHPR(1) and SCB_SHPR(3) which is not really what you'd expect.
Further, I don't think the definitions of SCB_SHPR1_PRI_ are he
I think there is a mistake in scb.h--
/* SHP: System Handler Priority Registers */
/* Note: 12 8bit registers */
#define SCB_SHPR(shpr_id) MMIO8(SCB_BASE + 0x18 +
shpr_id)
#define SCB_SHPR1 MMIO8(SCB_BASE + 0x18 +
1)
#define SCB_SHPR2
