diff options
Diffstat (limited to 'nuttx/arch/arm/src/sam3u/chip.h')
| -rwxr-xr-x | nuttx/arch/arm/src/sam3u/chip.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/sam3u/chip.h b/nuttx/arch/arm/src/sam3u/chip.h index 749459ca9..3f675a6f2 100755 --- a/nuttx/arch/arm/src/sam3u/chip.h +++ b/nuttx/arch/arm/src/sam3u/chip.h @@ -54,6 +54,16 @@ #include "sam3u_memorymap.h" +/* NVIC priority levels *************************************************************/ +/* Each priority field holds a priority value, 0-15. The lower the value, the greater + * the priority of the corresponding interrupt. The processor implements only + * bits[7:4] of each field, bits[3:0] read as zero and ignore writes. + */ + +#define NVIC_SYSH_PRIORITY_MIN 0xf0 /* All bits[7:4] set is minimum priority */ +#define NVIC_SYSH_PRIORITY_DEFAULT 0x80 /* Midpoint is the default */ +#define NVIC_SYSH_PRIORITY_MAX 0x00 /* Zero is maximum priority */ + /************************************************************************************ * Public Types ************************************************************************************/ |