diff options
Diffstat (limited to 'tmk_core/protocol/iwrap')
-rw-r--r-- | tmk_core/protocol/iwrap/suart.S | 312 | ||||
-rw-r--r-- | tmk_core/protocol/iwrap/suart.h | 16 | ||||
-rw-r--r-- | tmk_core/protocol/iwrap/wd.h | 318 |
3 files changed, 323 insertions, 323 deletions
diff --git a/tmk_core/protocol/iwrap/suart.S b/tmk_core/protocol/iwrap/suart.S index 1b02909638..a873515e10 100644 --- a/tmk_core/protocol/iwrap/suart.S +++ b/tmk_core/protocol/iwrap/suart.S @@ -1,156 +1,156 @@ -;---------------------------------------------------------------------------;
-; Software implemented UART module ;
-; (C)ChaN, 2005 (http://elm-chan.org/) ;
-;---------------------------------------------------------------------------;
-; Bit rate settings:
-;
-; 1MHz 2MHz 4MHz 6MHz 8MHz 10MHz 12MHz 16MHz 20MHz
-; 2.4kbps 138 - - - - - - - -
-; 4.8kbps 68 138 - - - - - - -
-; 9.6kbps 33 68 138 208 - - - - -
-; 19.2kbps - 33 68 102 138 173 208 - -
-; 38.4kbps - - 33 50 68 85 102 138 172
-; 57.6kbps - - 21 33 44 56 68 91 114
-; 115.2kbps - - - - 21 27 33 44 56
-
-.nolist
-#include <avr/io.h>
-.list
-
-#define BPS 102 /* Bit delay. (see above table) */
-#define BIDIR 0 /* 0:Separated Tx/Rx, 1:Shared Tx/Rx */
-
-#define OUT_1 sbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT /* Output 1 */
-#define OUT_0 cbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT /* Output 0 */
-#define SKIP_IN_1 sbis _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT /* Skip if 1 */
-#define SKIP_IN_0 sbic _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT /* Skip if 0 */
-
-
-
-#ifdef SPM_PAGESIZE
-.macro _LPMI reg
- lpm \reg, Z+
-.endm
-.macro _MOVW dh,dl, sh,sl
- movw \dl, \sl
-.endm
-#else
-.macro _LPMI reg
- lpm
- mov \reg, r0
- adiw ZL, 1
-.endm
-.macro _MOVW dh,dl, sh,sl
- mov \dl, \sl
- mov \dh, \sh
-.endm
-#endif
-
-
-
-;---------------------------------------------------------------------------;
-; Transmit a byte in serial format of N81
-;
-;Prototype: void xmit (uint8_t data);
-;Size: 16 words
-
-.global xmit
-.func xmit
-xmit:
-#if BIDIR
- ldi r23, BPS-1 ;Pre-idle time for bidirectional data line
-5: dec r23 ;
- brne 5b ;/
-#endif
- in r0, _SFR_IO_ADDR(SREG) ;Save flags
-
- com r24 ;C = start bit
- ldi r25, 10 ;Bit counter
- cli ;Start critical section
-
-1: ldi r23, BPS-1 ;----- Bit transferring loop
-2: dec r23 ;Wait for a bit time
- brne 2b ;/
- brcs 3f ;MISO = bit to be sent
- OUT_1 ;
-3: brcc 4f ;
- OUT_0 ;/
-4: lsr r24 ;Get next bit into C
- dec r25 ;All bits sent?
- brne 1b ; no, coutinue
-
- out _SFR_IO_ADDR(SREG), r0 ;End of critical section
- ret
-.endfunc
-
-
-
-;---------------------------------------------------------------------------;
-; Receive a byte
-;
-;Prototype: uint8_t rcvr (void);
-;Size: 19 words
-
-.global rcvr
-.func rcvr
-rcvr:
- in r0, _SFR_IO_ADDR(SREG) ;Save flags
-
- ldi r24, 0x80 ;Receiving shift reg
- cli ;Start critical section
-
-1: SKIP_IN_1 ;Wait for idle
- rjmp 1b
-2: SKIP_IN_0 ;Wait for start bit
- rjmp 2b
- ldi r25, BPS/2 ;Wait for half bit time
-3: dec r25
- brne 3b
-
-4: ldi r25, BPS ;----- Bit receiving loop
-5: dec r25 ;Wait for a bit time
- brne 5b ;/
- lsr r24 ;Next bit
- SKIP_IN_0 ;Get a data bit into r24.7
- ori r24, 0x80
- brcc 4b ;All bits received? no, continue
-
- out _SFR_IO_ADDR(SREG), r0 ;End of critical section
- ret
-.endfunc
-
-
-; Not wait for start bit. This should be called after detecting start bit.
-.global recv
-.func recv
-recv:
- in r0, _SFR_IO_ADDR(SREG) ;Save flags
-
- ldi r24, 0x80 ;Receiving shift reg
- cli ;Start critical section
-
-;1: SKIP_IN_1 ;Wait for idle
-; rjmp 1b
-;2: SKIP_IN_0 ;Wait for start bit
-; rjmp 2b
- ldi r25, BPS/2 ;Wait for half bit time
-3: dec r25
- brne 3b
-
-4: ldi r25, BPS ;----- Bit receiving loop
-5: dec r25 ;Wait for a bit time
- brne 5b ;/
- lsr r24 ;Next bit
- SKIP_IN_0 ;Get a data bit into r24.7
- ori r24, 0x80
- brcc 4b ;All bits received? no, continue
-
- ldi r25, BPS/2 ;Wait for half bit time
-6: dec r25
- brne 6b
-7: SKIP_IN_1 ;Wait for stop bit
- rjmp 7b
-
- out _SFR_IO_ADDR(SREG), r0 ;End of critical section
- ret
-.endfunc
+;---------------------------------------------------------------------------; +; Software implemented UART module ; +; (C)ChaN, 2005 (http://elm-chan.org/) ; +;---------------------------------------------------------------------------; +; Bit rate settings: +; +; 1MHz 2MHz 4MHz 6MHz 8MHz 10MHz 12MHz 16MHz 20MHz +; 2.4kbps 138 - - - - - - - - +; 4.8kbps 68 138 - - - - - - - +; 9.6kbps 33 68 138 208 - - - - - +; 19.2kbps - 33 68 102 138 173 208 - - +; 38.4kbps - - 33 50 68 85 102 138 172 +; 57.6kbps - - 21 33 44 56 68 91 114 +; 115.2kbps - - - - 21 27 33 44 56 + +.nolist +#include <avr/io.h> +.list + +#define BPS 102 /* Bit delay. (see above table) */ +#define BIDIR 0 /* 0:Separated Tx/Rx, 1:Shared Tx/Rx */ + +#define OUT_1 sbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT /* Output 1 */ +#define OUT_0 cbi _SFR_IO_ADDR(SUART_OUT_PORT), SUART_OUT_BIT /* Output 0 */ +#define SKIP_IN_1 sbis _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT /* Skip if 1 */ +#define SKIP_IN_0 sbic _SFR_IO_ADDR(SUART_IN_PIN), SUART_IN_BIT /* Skip if 0 */ + + + +#ifdef SPM_PAGESIZE +.macro _LPMI reg + lpm \reg, Z+ +.endm +.macro _MOVW dh,dl, sh,sl + movw \dl, \sl +.endm +#else +.macro _LPMI reg + lpm + mov \reg, r0 + adiw ZL, 1 +.endm +.macro _MOVW dh,dl, sh,sl + mov \dl, \sl + mov \dh, \sh +.endm +#endif + + + +;---------------------------------------------------------------------------; +; Transmit a byte in serial format of N81 +; +;Prototype: void xmit (uint8_t data); +;Size: 16 words + +.global xmit +.func xmit +xmit: +#if BIDIR + ldi r23, BPS-1 ;Pre-idle time for bidirectional data line +5: dec r23 ; + brne 5b ;/ +#endif + in r0, _SFR_IO_ADDR(SREG) ;Save flags + + com r24 ;C = start bit + ldi r25, 10 ;Bit counter + cli ;Start critical section + +1: ldi r23, BPS-1 ;----- Bit transferring loop +2: dec r23 ;Wait for a bit time + brne 2b ;/ + brcs 3f ;MISO = bit to be sent + OUT_1 ; +3: brcc 4f ; + OUT_0 ;/ +4: lsr r24 ;Get next bit into C + dec r25 ;All bits sent? + brne 1b ; no, coutinue + + out _SFR_IO_ADDR(SREG), r0 ;End of critical section + ret +.endfunc + + + +;---------------------------------------------------------------------------; +; Receive a byte +; +;Prototype: uint8_t rcvr (void); +;Size: 19 words + +.global rcvr +.func rcvr +rcvr: + in r0, _SFR_IO_ADDR(SREG) ;Save flags + + ldi r24, 0x80 ;Receiving shift reg + cli ;Start critical section + +1: SKIP_IN_1 ;Wait for idle + rjmp 1b +2: SKIP_IN_0 ;Wait for start bit + rjmp 2b + ldi r25, BPS/2 ;Wait for half bit time +3: dec r25 + brne 3b + +4: ldi r25, BPS ;----- Bit receiving loop +5: dec r25 ;Wait for a bit time + brne 5b ;/ + lsr r24 ;Next bit + SKIP_IN_0 ;Get a data bit into r24.7 + ori r24, 0x80 + brcc 4b ;All bits received? no, continue + + out _SFR_IO_ADDR(SREG), r0 ;End of critical section + ret +.endfunc + + +; Not wait for start bit. This should be called after detecting start bit. +.global recv +.func recv +recv: + in r0, _SFR_IO_ADDR(SREG) ;Save flags + + ldi r24, 0x80 ;Receiving shift reg + cli ;Start critical section + +;1: SKIP_IN_1 ;Wait for idle +; rjmp 1b +;2: SKIP_IN_0 ;Wait for start bit +; rjmp 2b + ldi r25, BPS/2 ;Wait for half bit time +3: dec r25 + brne 3b + +4: ldi r25, BPS ;----- Bit receiving loop +5: dec r25 ;Wait for a bit time + brne 5b ;/ + lsr r24 ;Next bit + SKIP_IN_0 ;Get a data bit into r24.7 + ori r24, 0x80 + brcc 4b ;All bits received? no, continue + + ldi r25, BPS/2 ;Wait for half bit time +6: dec r25 + brne 6b +7: SKIP_IN_1 ;Wait for stop bit + rjmp 7b + + out _SFR_IO_ADDR(SREG), r0 ;End of critical section + ret +.endfunc diff --git a/tmk_core/protocol/iwrap/suart.h b/tmk_core/protocol/iwrap/suart.h index 72725b998f..7d92be0692 100644 --- a/tmk_core/protocol/iwrap/suart.h +++ b/tmk_core/protocol/iwrap/suart.h @@ -1,8 +1,8 @@ -#ifndef SUART
-#define SUART
-
-void xmit(uint8_t);
-uint8_t rcvr(void);
-uint8_t recv(void);
-
-#endif /* SUART */
+#ifndef SUART +#define SUART + +void xmit(uint8_t); +uint8_t rcvr(void); +uint8_t recv(void); + +#endif /* SUART */ diff --git a/tmk_core/protocol/iwrap/wd.h b/tmk_core/protocol/iwrap/wd.h index 99058f0331..12395bf696 100644 --- a/tmk_core/protocol/iwrap/wd.h +++ b/tmk_core/protocol/iwrap/wd.h @@ -1,159 +1,159 @@ -/* This is from http://www.mtcnet.net/~henryvm/wdt/ */
-#ifndef _AVR_WD_H_
-#define _AVR_WD_H_
-
-#include <avr/io.h>
-
-/*
-Copyright (c) 2009, Curt Van Maanen
-
-Permission to use, copy, modify, and/or distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-
-include usage-
- #include "wd.h" //if in same directory as project
- #include <avr/wd.h> //if wd.h is in avr directory
-
-set watchdog modes and prescale
-
-usage-
- WD_SET(mode,[timeout]); //prescale always set
-
-modes-
- WD_OFF disabled
- WD_RST normal reset mode
- WD_IRQ interrupt only mode (if supported)
- WD_RST_IRQ interrupt+reset mode (if supported)
-
-timeout-
- WDTO_15MS default if no timeout provided
- WDTO_30MS
- WDTO_60MS
- WDTO_120MS
- WDTO_250MS
- WDTO_500MS
- WDTO_1S
- WDTO_2S
- WDTO_4S (if supported)
- WDTO_8S (if supported)
-
-examples-
- WD_SET(WD_RST,WDTO_1S); //reset mode, 1s timeout
- WD_SET(WD_OFF); //watchdog disabled (if not fused on)
- WD_SET(WD_RST); //reset mode, 15ms (default timeout)
- WD_SET(WD_IRQ,WDTO_120MS); //interrupt only mode, 120ms timeout
- WD_SET(WD_RST_IRQ,WDTO_2S); //interrupt+reset mode, 2S timeout
-
-
-for enhanced watchdogs, if the watchdog is not being used WDRF should be
-cleared on every power up or reset, along with disabling the watchdog-
- WD_DISABLE(); //clear WDRF, then turn off watchdog
-
-*/
-
-//reset registers to the same name (MCUCSR)
-#if !defined(MCUCSR)
-#define MCUCSR MCUSR
-#endif
-
-//watchdog registers to the same name (WDTCSR)
-#if !defined(WDTCSR)
-#define WDTCSR WDTCR
-#endif
-
-//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)
-#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
-#if defined(WDP3)
-#define WDTO_4S 0x20
-#define WDTO_8S 0x21
-#endif
-
-//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)
-
-/*set the watchdog-
-1. save SREG
-2. turn off irq's
-3. reset watchdog timer
-4. enable watchdog change
-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" \
-)
-
-/*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)
-
-
-#endif /* _AVR_WD_H_ */
+/* This is from http://www.mtcnet.net/~henryvm/wdt/ */ +#ifndef _AVR_WD_H_ +#define _AVR_WD_H_ + +#include <avr/io.h> + +/* +Copyright (c) 2009, Curt Van Maanen + +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted, provided that the above +copyright notice and this permission notice appear in all copies. + +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + +include usage- + #include "wd.h" //if in same directory as project + #include <avr/wd.h> //if wd.h is in avr directory + +set watchdog modes and prescale + +usage- + WD_SET(mode,[timeout]); //prescale always set + +modes- + WD_OFF disabled + WD_RST normal reset mode + WD_IRQ interrupt only mode (if supported) + WD_RST_IRQ interrupt+reset mode (if supported) + +timeout- + WDTO_15MS default if no timeout provided + WDTO_30MS + WDTO_60MS + WDTO_120MS + WDTO_250MS + WDTO_500MS + WDTO_1S + WDTO_2S + WDTO_4S (if supported) + WDTO_8S (if supported) + +examples- + WD_SET(WD_RST,WDTO_1S); //reset mode, 1s timeout + WD_SET(WD_OFF); //watchdog disabled (if not fused on) + WD_SET(WD_RST); //reset mode, 15ms (default timeout) + WD_SET(WD_IRQ,WDTO_120MS); //interrupt only mode, 120ms timeout + WD_SET(WD_RST_IRQ,WDTO_2S); //interrupt+reset mode, 2S timeout + + +for enhanced watchdogs, if the watchdog is not being used WDRF should be +cleared on every power up or reset, along with disabling the watchdog- + WD_DISABLE(); //clear WDRF, then turn off watchdog + +*/ + +//reset registers to the same name (MCUCSR) +#if !defined(MCUCSR) +#define MCUCSR MCUSR +#endif + +//watchdog registers to the same name (WDTCSR) +#if !defined(WDTCSR) +#define WDTCSR WDTCR +#endif + +//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) +#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 +#if defined(WDP3) +#define WDTO_4S 0x20 +#define WDTO_8S 0x21 +#endif + +//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) + +/*set the watchdog- +1. save SREG +2. turn off irq's +3. reset watchdog timer +4. enable watchdog change +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" \ +) + +/*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) + + +#endif /* _AVR_WD_H_ */ |