diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-04-03 22:39:02 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2021-04-03 22:39:02 +0200 |
| commit | 71db59f69602e54c33ba707c8e4a7a66f6c9ca0b (patch) | |
| tree | aebcd29addd854bd3b0784b0ed8719f61fdf7afe | |
| parent | cd8e18ad94933f927ef7c453f7a1102f4e60fa8a (diff) | |
pit: Add more macros
* i386/i386/pit.h (PITAUX_VAL, PIT_C2): New macros.
(PIT_RATEMODE): Fix macro value.
| -rw-r--r-- | i386/i386/pit.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/i386/i386/pit.h b/i386/i386/pit.h index e004c37c..cf0b74cc 100644 --- a/i386/i386/pit.h +++ b/i386/i386/pit.h @@ -58,6 +58,7 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. /* bits used in auxiliary control port for timer 2 */ #define PITAUX_GATE2 0x01 /* aux port, PIT gate 2 input */ #define PITAUX_OUT2 0x02 /* aux port, PIT clock out 2 enable */ +#define PITAUX_VAL 0x20 /* aux port, output */ #endif /* defined(AT386) */ /* Following are used for Timer 0 */ @@ -65,13 +66,17 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. #define PIT_LOADMODE 0x30 /* load least significant byte followed * by most significant byte */ #define PIT_NDIVMODE 0x04 /*divide by N counter */ -#define PIT_SQUAREMODE 0x06 /* square-wave mode */ /* Used for Timer 1. Used for delay calculations in countdown mode */ #define PIT_C1 0x40 /* select counter 1 */ #define PIT_READMODE 0x30 /* read or load least significant byte * followed by most significant byte */ -#define PIT_RATEMODE 0x06 /* square-wave mode for USART */ + +#define PIT_SQUAREMODE 0x06 /* square-wave mode */ +#define PIT_RATEMODE 0x02 /* rate generator mode */ + +/* Used for Timer 2. */ +#define PIT_C2 0x80 /* select counter 2 */ /* * Clock speed for the timer in hz divided by the constant HZ |