X-Git-Url: https://git.realraum.at/?p=svn42.git;a=blobdiff_plain;f=rf433ctl%2FOneWire%2FOneWire.h;fp=rf433ctl%2FOneWire%2FOneWire.h;h=0000000000000000000000000000000000000000;hp=c579b9488d27c780ff56dfd220aab580919bc5f7;hb=ff9137d257207a3a4b03c4f453cc1b7ce1e3cf17;hpb=a34e51d757fe52cb19de2937ae1b211894167524 diff --git a/rf433ctl/OneWire/OneWire.h b/rf433ctl/OneWire/OneWire.h deleted file mode 100644 index c579b94..0000000 --- a/rf433ctl/OneWire/OneWire.h +++ /dev/null @@ -1,110 +0,0 @@ -#ifndef OneWire_h -#define OneWire_h - -#include - -// you can exclude onewire_search by defining that to 0 -#ifndef ONEWIRE_SEARCH -#define ONEWIRE_SEARCH 1 -#endif - -// You can exclude CRC checks altogether by defining this to 0 -#ifndef ONEWIRE_CRC -#define ONEWIRE_CRC 1 -#endif - -// Select the table-lookup method of computing the 8-bit CRC -// by setting this to 1. The lookup table no longer consumes -// limited RAM, but enlarges total code size by about 250 bytes -#ifndef ONEWIRE_CRC8_TABLE -#define ONEWIRE_CRC8_TABLE 0 -#endif - -// You can allow 16-bit CRC checks by defining this to 1 -// (Note that ONEWIRE_CRC must also be 1.) -#ifndef ONEWIRE_CRC16 -#define ONEWIRE_CRC16 0 -#endif - -#define FALSE 0 -#define TRUE 1 - -class OneWire -{ - private: - uint8_t bitmask; - volatile uint8_t *baseReg; - -#if ONEWIRE_SEARCH - // global search state - unsigned char ROM_NO[8]; - uint8_t LastDiscrepancy; - uint8_t LastFamilyDiscrepancy; - uint8_t LastDeviceFlag; -#endif - - public: - OneWire( uint8_t pin); - - // Perform a 1-Wire reset cycle. Returns 1 if a device responds - // with a presence pulse. Returns 0 if there is no device or the - // bus is shorted or otherwise held low for more than 250uS - uint8_t reset(void); - - // Issue a 1-Wire rom select command, you do the reset first. - void select( uint8_t rom[8]); - - // Issue a 1-Wire rom skip command, to address all on bus. - void skip(void); - - // Write a byte. If 'power' is one then the wire is held high at - // the end for parasitically powered devices. You are responsible - // for eventually depowering it by calling depower() or doing - // another read or write. - void write(uint8_t v, uint8_t power = 0); - - // Read a byte. - uint8_t read(void); - - // Write a bit. The bus is always left powered at the end, see - // note in write() about that. - void write_bit(uint8_t v); - - // Read a bit. - uint8_t read_bit(void); - - // Stop forcing power onto the bus. You only need to do this if - // you used the 'power' flag to write() or used a write_bit() call - // and aren't about to do another read or write. You would rather - // not leave this powered if you don't have to, just in case - // someone shorts your bus. - void depower(void); - -#if ONEWIRE_SEARCH - // Clear the search state so that if will start from the beginning again. - void reset_search(); - - // Look for the next device. Returns 1 if a new address has been - // returned. A zero might mean that the bus is shorted, there are - // no devices, or you have already retrieved all of them. It - // might be a good idea to check the CRC to make sure you didn't - // get garbage. The order is deterministic. You will always get - // the same devices in the same order. - uint8_t search(uint8_t *newAddr); -#endif - -#if ONEWIRE_CRC - // Compute a Dallas Semiconductor 8 bit CRC, these are used in the - // ROM and scratchpad registers. - static uint8_t crc8( uint8_t *addr, uint8_t len); - -#if ONEWIRE_CRC16 - // Compute a Dallas Semiconductor 16 bit CRC. Maybe. I don't have - // any devices that use this so this might be wrong. I just copied - // it from their sample code. - static unsigned short crc16(unsigned short *data, unsigned short len); -#endif -#endif -}; - -#endif