sensor_ds18b20: minor, add spacing around operator

lib/sensor_ds18b20.c

@@ -2,7 +2,7 @@
  *  @file
  *  @author King Kévin <kingkevin@cuvoodoo.info>
  *  @copyright SPDX-License-Identifier: GPL-3.0-or-later
- *  @date 2017
+ *  @date 2017-2020
  *  @note peripherals used: 1-Wire (timer @ref onewire_master_timer, GPIO @ref onewire_master_gpio)
  *  @warning this library does not support parasite power mode and alarms
  */
@@ -42,10 +42,10 @@ uint64_t sensor_ds18b20_number(void)
 			return 0; // no slave presence detected
 		}
 		more = onewire_master_rom_search(&code, false); // get next slave ROM code (without alarm)
-		if (0==code) { // error occurred
+		if (0 == code) { // error occurred
 			return 0;
 		}
-		if (0x28==(code&0xff)) { // family code (8-LSb) for DS18B20 sensors is 0x28
+		if (0x28 == (code & 0xff)) { // family code (8-LSb) for DS18B20 sensors is 0x28
 			last = code; // save last found code
 			sensors++; // we found an additional sensor
 		} else {
@@ -68,12 +68,12 @@ bool sensor_ds18b20_list(uint64_t* code)
 		return false; // no slave presence detected
 	}
 	onewire_master_rom_search(code, false); // get next code
-	return (last!=*code); // verify if the last has been found
+	return (last != *code); // verify if the last has been found
 }
 
 bool sensor_ds18b20_convert(uint64_t code)
 {
-	if (0==code && !only) { // asked for broadcast but there are different slaves on bus
+	if (0 == code && !only) { // asked for broadcast but there are different slaves on bus
 		return false; // broadcast not possible when there are also different slaves on bus
 	}
 
@@ -83,7 +83,7 @@ bool sensor_ds18b20_convert(uint64_t code)
 	}
 
 	// send ROM command to select slave(s)
-	if (0==code) { // broadcast convert
+	if (0 == code) { // broadcast convert
 		if (!onewire_master_rom_skip()) { // select all slaves
 			return false; // ROM command failed
 		}
@@ -99,7 +99,7 @@ bool sensor_ds18b20_convert(uint64_t code)
 
 float sensor_ds18b20_temperature(uint64_t code)
 {
-	if (0==code && (sensors>1 || !only)) { // broadcast read requested
+	if (0 == code && (sensors > 1 || !only)) { // broadcast read requested
 		return NAN; // this function is not possible when several sensors or other devices are present
 	}
 
@@ -115,7 +115,7 @@ float sensor_ds18b20_temperature(uint64_t code)
 
 	// read scratchpad to get temperature (on byte 0 and 1)
 	uint8_t scratchpad[9] = {0}; // to store read scratchpad
-	if (!onewire_master_function_read(0xbe, scratchpad, sizeof(scratchpad)*8)) { // read complete scratchpad
+	if (!onewire_master_function_read(0xbe, scratchpad, sizeof(scratchpad) * 8)) { // read complete scratchpad
 		return NAN; // error occurred during read
 	}
 
@@ -125,16 +125,16 @@ float sensor_ds18b20_temperature(uint64_t code)
 	}
 
 	// calculate temperature (stored as int16_t but on 0.125 C steps)
-	return ((int16_t)(scratchpad[1]<<8)+scratchpad[0])/16.0; // get temperature (on < 16 precision the last bits are undefined, but that doesn't matter for the end result since the lower precision is still provided)
+	return ((int16_t)(scratchpad[1] << 8) + scratchpad[0]) / 16.0; // get temperature (on < 16 precision the last bits are undefined, but that doesn't matter for the end result since the lower precision is still provided)
 }
 
 bool sensor_ds18b20_precision(uint64_t code, uint8_t precision)
 {
-	if (precision<9 || precision>12) { // check input
+	if (precision < 9 || precision > 12) { // check input
 		return false; // wrong precision value
 	}
 
-	if (0==code && !only) { // asked for broadcast but there are different slaves on bus
+	if (0 == code && !only) { // asked for broadcast but there are different slaves on bus
 		return false; // broadcast not possible when there are also different slaves on bus
 	}
 
@@ -144,7 +144,7 @@ bool sensor_ds18b20_precision(uint64_t code, uint8_t precision)
 	}
 
 	// send ROM command to select slave(s)
-	if (0==code) { // broadcast convert
+	if (0 == code) { // broadcast convert
 		if (!onewire_master_rom_skip()) { // select all slaves
 			return false; // ROM command failed
 		}
@@ -156,7 +156,7 @@ bool sensor_ds18b20_precision(uint64_t code, uint8_t precision)
 
 	// read scratchpad to get alarm values (on byte 2 and 3)
 	uint8_t scratchpad[9] = {0}; // to store read scratchpad
-	if (!onewire_master_function_read(0xbe, scratchpad, sizeof(scratchpad)*8)) { // read complete scratchpad
+	if (!onewire_master_function_read(0xbe, scratchpad, sizeof(scratchpad) * 8)) { // read complete scratchpad
 		return false; // error occurred during read
 	}
 
@@ -169,8 +169,8 @@ bool sensor_ds18b20_precision(uint64_t code, uint8_t precision)
 	uint8_t configuration[3] = {0}; // to store T_HIGH, T_LOW, and configuration
 	configuration[0] = scratchpad[2]; // keep T_HIGH
 	configuration[1] = scratchpad[3]; // keep T_LOW
-	configuration[2] = 0x1f+((precision-9)<<5); // set precision bit (R1-R0 on bit 6-5)
-	if (!onewire_master_function_write(0x4e, configuration, sizeof(configuration)*8)) { // write scratchpad with new configuration (all three bytes must be written)
+	configuration[2] = 0x1f + ((precision - 9) << 5); // set precision bit (R1-R0 on bit 6-5)
+	if (!onewire_master_function_write(0x4e, configuration, sizeof(configuration) * 8)) { // write scratchpad with new configuration (all three bytes must be written)
 		return false; // error occurred during write
 	}
 

lib/sensor_ds18b20.h

@@ -2,7 +2,7 @@
  *  @file
  *  @author King Kévin <kingkevin@cuvoodoo.info>
  *  @copyright SPDX-License-Identifier: GPL-3.0-or-later
- *  @date 2017
+ *  @date 2017-2020
  *  @note peripherals used: 1-Wire (timer @ref onewire_master_timer, GPIO @ref onewire_master_gpio)
  *  @warning this library does not support parasite power mode and alarms
  */