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comparison simple_ds18b20.c @ 75:ca08442635ca

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report raw ds18b20 values instead
author Matt Johnston <matt@ucc.asn.au>
date Tue, 03 Jul 2012 22:44:21 +0800
parents 878be5e353a0
children 90d1ebb941ab
comparison
equal deleted inserted replaced
74:cb5ea75ee599 75:ca08442635ca
123 *decicelsius = ds18b20_raw_to_decicelsius( sp ); 123 *decicelsius = ds18b20_raw_to_decicelsius( sp );
124 } 124 }
125 return ret; 125 return ret;
126 } 126 }
127 127
128 uint8_t
129 simple_ds18b20_read_raw( uint8_t id[], uint16_t *reading )
130 {
131 uint8_t sp[DS18X20_SP_SIZE];
132 uint8_t ret;
133
134 if (id)
135 {
136 ow_reset();
137 }
138 ret = read_scratchpad( id, sp, DS18X20_SP_SIZE );
139 if ( ret == DS18X20_OK ) {
140 *reading = sp[0] | (sp[1] << 8);
141 }
142 return ret;
143 }
144
128 static void 145 static void
129 printhex_nibble(const unsigned char b, FILE *stream) 146 printhex_nibble(const unsigned char b, FILE *stream)
130 { 147 {
131 unsigned char c = b & 0x0f; 148 unsigned char c = b & 0x0f;
132 if ( c > 9 ) { 149 if ( c > 9 ) {