diff options
Diffstat (limited to 'tmk_core/protocol/iwrap/wd.h')
| -rw-r--r-- | tmk_core/protocol/iwrap/wd.h | 134 |
1 files changed, 68 insertions, 66 deletions
diff --git a/tmk_core/protocol/iwrap/wd.h b/tmk_core/protocol/iwrap/wd.h index 12395bf696..083d6d44d6 100644 --- a/tmk_core/protocol/iwrap/wd.h +++ b/tmk_core/protocol/iwrap/wd.h @@ -61,55 +61,58 @@ cleared on every power up or reset, along with disabling the watchdog- */ -//reset registers to the same name (MCUCSR) +// reset registers to the same name (MCUCSR) #if !defined(MCUCSR) -#define MCUCSR MCUSR +# define MCUCSR MCUSR #endif -//watchdog registers to the same name (WDTCSR) +// watchdog registers to the same name (WDTCSR) #if !defined(WDTCSR) -#define WDTCSR WDTCR +# define WDTCSR WDTCR #endif -//if enhanced watchdog, define irq values, create disable macro +// if enhanced watchdog, define irq values, create disable macro #if defined(WDIF) -#define WD_IRQ 0xC0 -#define WD_RST_IRQ 0xC8 -#define WD_DISABLE() do{ \ - MCUCSR &= ~(1<<WDRF); \ - WD_SET(WD_OFF); \ - }while(0) +# define WD_IRQ 0xC0 +# define WD_RST_IRQ 0xC8 +# define WD_DISABLE() \ + do { \ + MCUCSR &= ~(1 << WDRF); \ + WD_SET(WD_OFF); \ + } while (0) #endif -//all watchdogs -#define WD_RST 8 -#define WD_OFF 0 - -//prescale values -#define WDTO_15MS 0 -#define WDTO_30MS 1 -#define WDTO_60MS 2 -#define WDTO_120MS 3 -#define WDTO_250MS 4 -#define WDTO_500MS 5 -#define WDTO_1S 6 -#define WDTO_2S 7 - -//prescale values for avrs with WDP3 +// all watchdogs +#define WD_RST 8 +#define WD_OFF 0 + +// prescale values +#define WDTO_15MS 0 +#define WDTO_30MS 1 +#define WDTO_60MS 2 +#define WDTO_120MS 3 +#define WDTO_250MS 4 +#define WDTO_500MS 5 +#define WDTO_1S 6 +#define WDTO_2S 7 + +// prescale values for avrs with WDP3 #if defined(WDP3) -#define WDTO_4S 0x20 -#define WDTO_8S 0x21 +# define WDTO_4S 0x20 +# define WDTO_8S 0x21 #endif -//watchdog reset -#define WDR() __asm__ __volatile__("wdr") +// watchdog reset +#define WDR() __asm__ __volatile__("wdr") -//avr reset using watchdog -#define WD_AVR_RESET() do{ \ - __asm__ __volatile__("cli"); \ - WD_SET_UNSAFE(WD_RST); \ - while(1); \ - }while(0) +// avr reset using watchdog +#define WD_AVR_RESET() \ + do { \ + __asm__ __volatile__("cli"); \ + WD_SET_UNSAFE(WD_RST); \ + while (1) \ + ; \ + } while (0) /*set the watchdog- 1. save SREG @@ -119,41 +122,40 @@ cleared on every power up or reset, along with disabling the watchdog- 5. write watchdog value 6. restore SREG (restoring irq status) */ -#define WD_SET(val,...) \ - __asm__ __volatile__( \ - "in __tmp_reg__,__SREG__" "\n\t" \ - "cli" "\n\t" \ - "wdr" "\n\t" \ - "sts %[wdreg],%[wden]" "\n\t" \ - "sts %[wdreg],%[wdval]" "\n\t" \ - "out __SREG__,__tmp_reg__" "\n\t" \ - : \ - : [wdreg] "M" (&WDTCSR), \ - [wden] "r" ((uint8_t)(0x18)), \ - [wdval] "r" ((uint8_t)(val|(__VA_ARGS__+0))) \ - : "r0" \ -) +#define WD_SET(val, ...) \ + __asm__ __volatile__("in __tmp_reg__,__SREG__" \ + "\n\t" \ + "cli" \ + "\n\t" \ + "wdr" \ + "\n\t" \ + "sts %[wdreg],%[wden]" \ + "\n\t" \ + "sts %[wdreg],%[wdval]" \ + "\n\t" \ + "out __SREG__,__tmp_reg__" \ + "\n\t" \ + : \ + : [ wdreg ] "M"(&WDTCSR), [ wden ] "r"((uint8_t)(0x18)), [ wdval ] "r"((uint8_t)(val | (__VA_ARGS__ + 0))) \ + : "r0") /*set the watchdog when I bit in SREG known to be clear- 1. reset watchdog timer 2. enable watchdog change 5. write watchdog value */ -#define WD_SET_UNSAFE(val,...) \ - __asm__ __volatile__( \ - "wdr" "\n\t" \ - "sts %[wdreg],%[wden]" "\n\t" \ - "sts %[wdreg],%[wdval]" "\n\t" \ - : \ - : [wdreg] "M" (&WDTCSR), \ - [wden] "r" ((uint8_t)(0x18)), \ - [wdval] "r" ((uint8_t)(val|(__VA_ARGS__+0))) \ -) - - -//for compatibility with avr/wdt.h -#define wdt_enable(val) WD_SET(WD_RST,val) -#define wdt_disable() WD_SET(WD_OFF) - +#define WD_SET_UNSAFE(val, ...) \ + __asm__ __volatile__("wdr" \ + "\n\t" \ + "sts %[wdreg],%[wden]" \ + "\n\t" \ + "sts %[wdreg],%[wdval]" \ + "\n\t" \ + : \ + : [ wdreg ] "M"(&WDTCSR), [ wden ] "r"((uint8_t)(0x18)), [ wdval ] "r"((uint8_t)(val | (__VA_ARGS__ + 0)))) + +// for compatibility with avr/wdt.h +#define wdt_enable(val) WD_SET(WD_RST, val) +#define wdt_disable() WD_SET(WD_OFF) #endif /* _AVR_WD_H_ */ |