Diff: MAX31856.cpp

Revision:

3:a99a4367c909

Parent:

2:296485923589

Child:

6:e1200ae7d6a3

diff -r 296485923589 -r a99a4367c909 MAX31856.cpp
--- a/MAX31856.cpp	Wed Jul 26 18:46:23 2017 +0000
+++ b/MAX31856.cpp	Fri Jul 28 03:22:13 2017 +0000
@@ -70,12 +70,12 @@
     if      (val==CR0_CONV_MODE_NORMALLY_OFF) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_7, val);
         conversion_mode=0;
-        LOG("Register containing\t\t","setConversionMode","\t\twas programmed with the parameter\t\t","CR0_CONV_MODE_NORMALLY_OFF");
+        LOG("Register containing\t\tsetConversionMode\t\twas programmed with the parameter\t\tCR0_CONV_MODE_NORMALLY_OFF\r\n");
     } 
     else if (val==CR0_CONV_MODE_NORMALLY_ON) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_7, val);
         conversion_mode=1;
-        LOG("Register containing\t\t","setConversionMode","\t\twas programmed with the parameter\t\t","CR0_CONV_MODE_NORMALLY_ON");
+        LOG("Register containing\t\tsetConversionMode\t\twas programmed with the parameter\t\tCR0_CONV_MODE_NORMALLY_ON\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 0 (CR0) bit 7. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -88,11 +88,11 @@
 bool MAX31856::setOneShotMode(uint8_t val) {
     if      (val==CR0_1_SHOT_MODE_NO_CONVERSION) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_6, val);
-        LOG("Register containing\t\t","setOneShotMode","\t\twas programmed with the parameter\t\t","CR0_1_SHOT_MODE_NO_CONVERSIONS");
+        LOG("Register containing\t\tsetOneShotMode\t\twas programmed with the parameter\t\tCR0_1_SHOT_MODE_NO_CONVERSIONS\r\n");
     }
     else if (val==CR0_1_SHOT_MODE_ONE_CONVERSION) { 
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_6, val);
-        LOG("Register containing\t\t","setOneShotMode","\t\twas programmed with the parameter\t\t","CR0_1_SHOT_MODE_NO_CONVERSIONS");
+        LOG("Register containing\t\tsetOneShotMode\t\twas programmed with the parameter\t\tCR0_1_SHOT_MODE_NO_CONVERSIONS\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 0 (CR0) bit 6. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -105,19 +105,19 @@
 bool MAX31856::setOpenCircuitFaultDetection(uint8_t val) {
     if      (val==CR0_OC_DETECT_DISABLED) { 
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_5_4, val);
-        LOG("Register containing\t\t","setOpenCircuitFaultDetection","\t\twas programmed with the parameter\t\t","CR0_OC_DETECT_DISABLED");
+        LOG("Register containing\t\tsetOpenCircuitFaultDetection\t\twas programmed with the parameter\t\tCR0_OC_DETECT_DISABLED\r\n");
     }
     else if (val==CR0_OC_DETECT_ENABLED_R_LESS_5k) {  
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_5_4, val);
-        LOG("Register containing\t\t","setOpenCircuitFaultDetection","\t\twas programmed with the parameter\t\t","CR0_OC_DETECT_ENABLED_R_LESS_5k");
+        LOG("Register containing\t\tsetOpenCircuitFaultDetection\t\twas programmed with the parameter\t\tCR0_OC_DETECT_ENABLED_R_LESS_5k\r\n");
     }
     else if (val==CR0_OC_DETECT_ENABLED_TC_LESS_2ms) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_5_4, val);
-        LOG("Register containing\t\t","setOpenCircuitFaultDetection","\t\twas programmed with the parameter\t\t","CR0_OC_DETECT_ENABLED_TC_LESS_2ms");
+        LOG("Register containing\t\tsetOpenCircuitFaultDetection\t\twas programmed with the parameter\t\tCR0_OC_DETECT_ENABLED_TC_LESS_2ms\r\n");
     }
     else if (val==CR0_OC_DETECT_ENABLED_TC_MORE_2ms) { 
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_5_4, val);
-        LOG("Register containing\t\t","setOpenCircuitFaultDetection","\t\twas programmed with the parameter\t\t","CR0_OC_DETECT_ENABLED_TC_MORE_2ms");
+        LOG("Register containing\t\tsetOpenCircuitFaultDetection\t\twas programmed with the parameter\t\tCR0_OC_DETECT_ENABLED_TC_MORE_2ms\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 0 (CR0) bits 5:4. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -131,12 +131,12 @@
     if (val==CR0_COLD_JUNC_ENABLE) { 
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_3, val);
         cold_junction_enabled=1;
-        LOG("Register containing\t\t","setColdJunctionDisable","\t\twas programmed with the parameter\t\t","CR0_COLD_JUNC_ENABLE");
+        LOG("Register containing\t\tsetColdJunctionDisable\t\twas programmed with the parameter\t\tCR0_COLD_JUNC_ENABLE\r\n");
     }
     else if (val==CR0_COLD_JUNC_DISABLE) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_3, val);
         cold_junction_enabled=0;
-        LOG("Register containing\t\t","setColdJunctionDisable","\t\twas programmed with the parameter\t\t","CR0_COLD_JUNC_DISABLE");
+        LOG("Register containing\t\tsetColdJunctionDisable\t\twas programmed with the parameter\t\tCR0_COLD_JUNC_DISABLE\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 0 (CR0) bit 3. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -149,11 +149,11 @@
 bool MAX31856::setFaultMode(uint8_t val) {
     if      (val==CR0_FAULT_MODE_COMPARATOR) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_2, val);
-        LOG("Register containing\t\t","setFaultMode","\t\twas programmed with the parameter\t\t","CR0_FAULT_MODE_COMPARATOR");
+        LOG("Register containing\t\tsetFaultMode\t\twas programmed with the parameter\t\tCR0_FAULT_MODE_COMPARATOR\r\n");
     }
     else if (val==CR0_FAULT_MODE_INTERUPT) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_2, val);
-        LOG("Register containing\t\t","setFaultMode","\t\twas programmed with the parameter\t\t","CR0_FAULT_MODE_INTERUPT");
+        LOG("Register containing\t\tsetFaultMode\t\twas programmed with the parameter\t\tCR0_FAULT_MODE_INTERUPT\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 0 (CR0) bit 2. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -166,11 +166,11 @@
 bool MAX31856::setFaultStatusClear(uint8_t val) {
     if      (val==CR0_FAULTCLR_DEFAULT_VAL) { 
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_1, val);
-        LOG("Register containing\t\t","setFaultStatusClear","\t\twas programmed with the parameter\t\t","CR0_FAULTCLR_DEFAULT_VAL");
+        LOG("Register containing\t\tsetFaultStatusClear\t\twas programmed with the parameter\t\tCR0_FAULTCLR_DEFAULT_VAL\r\n");
     }
     else if (val==CR0_FAULTCLR_RETURN_FAULTS_TO_ZERO) { 
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_1, val);
-        LOG("Register containing\t\t","setFaultStatusClear","\t\twas programmed with the parameter\t\t","CR0_FAULTCLR_RETURN_FAULTS_TO_ZERO");
+        LOG("Register containing\t\tsetFaultStatusClear\t\twas programmed with the parameter\t\tCR0_FAULTCLR_RETURN_FAULTS_TO_ZERO\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 0 (CR0) bit 1. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -184,12 +184,12 @@
     if      (val==CR0_FILTER_OUT_60Hz) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_0, val);
         filter_mode=0;
-        LOG("Register containing\t\t","setEmiFilterFreq","\t\twas programmed with the parameter\t\t","CR0_FILTER_OUT_60Hz");
+        LOG("Register containing\t\tsetEmiFilterFreq\t\twas programmed with the parameter\t\tCR0_FILTER_OUT_60Hz\r\n");
     }
     else if (val==CR0_FILTER_OUT_50Hz) {
         return_val=registerReadWriteByte(ADDRESS_CR0_READ, ADDRESS_CR0_WRITE, CR0_CLEAR_BITS_0, val);
         filter_mode=1;
-        LOG("Register containing\t\t","setEmiFilterFreq","\t\twas programmed with the parameter\t\t","CR0_FILTER_OUT_50Hz");
+        LOG("Register containing\t\tsetEmiFilterFreq\t\twas programmed with the parameter\t\tCR0_FILTER_OUT_50Hz\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 0 (CR0) bit 0. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -203,27 +203,27 @@
     if      (val==CR1_AVG_TC_SAMPLES_1) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_6_4, val);
         samples=1;
-        LOG("Register containing\t\t","setNumSamplesAvg","\t\twas programmed with the parameter\t\t","CR1_AVG_TC_SAMPLES_1");
+        LOG("Register containing\t\tsetNumSamplesAvg\t\twas programmed with the parameter\t\tCR1_AVG_TC_SAMPLES_1\r\n");
     }
     else if (val==CR1_AVG_TC_SAMPLES_2) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_6_4, val);
         samples=2;
-        LOG("Register containing\t\t","setNumSamplesAvg","\t\twas programmed with the parameter\t\t","CR1_AVG_TC_SAMPLES_2");
+        LOG("Register containing\t\tsetNumSamplesAvg\t\twas programmed with the parameter\t\tCR1_AVG_TC_SAMPLES_2\r\n");
     }
     else if (val==CR1_AVG_TC_SAMPLES_4) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_6_4, val);
         samples=4;
-        LOG("Register containing\t\t","setNumSamplesAvg","\t\twas programmed with the parameter\t\t","CR1_AVG_TC_SAMPLES_4");
+        LOG("Register containing\t\tsetNumSamplesAvg\t\twas programmed with the parameter\t\tCR1_AVG_TC_SAMPLES_4\r\n");
     }
     else if (val==CR1_AVG_TC_SAMPLES_8) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_6_4, val);
         samples=8;
-        LOG("Register containing\t\t","setNumSamplesAvg","\t\twas programmed with the parameter\t\t","CR1_AVG_TC_SAMPLES_8");
+        LOG("Register containing\t\tsetNumSamplesAvg\t\twas programmed with the parameter\t\tCR1_AVG_TC_SAMPLES_8\r\n");
     }
     else if (val==CR1_AVG_TC_SAMPLES_16) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_6_4, val);
         samples=16;
-        LOG("Register containing\t\t","setNumSamplesAvg","\t\twas programmed with the parameter\t\t","CR1_AVG_TC_SAMPLES_16");
+        LOG("Register containing\t\tsetNumSamplesAvg\t\twas programmed with the parameter\t\tCR1_AVG_TC_SAMPLES_16\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 1 (CR1) bits 6:4. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -237,52 +237,52 @@
     if      (val==CR1_TC_TYPE_B) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_B");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_B\r\n");
     }
     else if (val==CR1_TC_TYPE_E) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_E");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_E\r\n");
     }
     else if (val==CR1_TC_TYPE_J) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_J");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_J\r\n");
     }
     else if (val==CR1_TC_TYPE_K) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_K");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_K\r\n");
     }
     else if (val==CR1_TC_TYPE_N) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_N");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_N\r\n");
     }
     else if (val==CR1_TC_TYPE_R) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_R");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_R\r\n");
     }
     else if (val==CR1_TC_TYPE_S) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_S");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_S\r\n");
     }
     else if (val==CR1_TC_TYPE_T) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=false;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_T");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_T\r\n");
     }
     else if (val==CR1_TC_TYPE_VOLT_MODE_GAIN_8) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=true;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_VOLT_MODE_GAIN_8");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_VOLT_MODE_GAIN_8\r\n");
     }
     else if (val==CR1_TC_TYPE_VOLT_MODE_GAIN_32) {
         return_val=registerReadWriteByte(ADDRESS_CR1_READ, ADDRESS_CR1_WRITE, CR1_CLEAR_BITS_3_0, val);
         voltage_mode=true;
-        LOG("Register containing\t\t","setThermocoupleType","\t\twas programmed with the parameter\t\t","CR1_TC_TYPE_VOLT_MODE_GAIN_32");
+        LOG("Register containing\t\tsetThermocoupleType\t\twas programmed with the parameter\t\tCR1_TC_TYPE_VOLT_MODE_GAIN_32\r\n");
     }
     else {
         LOG("Incorrect parameter selected for Control Register 1 (CR1) bits 3:0. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
@@ -300,30 +300,30 @@
         temp_val=val;
     if      (val==MASK_CJ_FAULT_THRESHOLD_HIGH) {          //Cold Junction High Threshold Fault Mask
         return_val=registerReadWriteByte(ADDRESS_MASK_READ, ADDRESS_MASK_WRITE, MASK_CLEAR_BITS_5, temp_val);
-        LOG("Register containing\t\t","setFaultMasks","\t\twas programmed with the parameter\t\t","MASK_CJ_FAULT_THRESHOLD_HIGH");
+        LOG("Register containing\t\tsetFaultMasks\t\twas programmed with the parameter\t\tMASK_CJ_FAULT_THRESHOLD_HIGH\r\n");
     }
     else if (val==MASK_CJ_FAULT_THRESHOLD_LOW) {           //Cold Junction Low  Threshold Fault Mask
         return_val=registerReadWriteByte(ADDRESS_MASK_READ, ADDRESS_MASK_WRITE, MASK_CLEAR_BITS_4, temp_val);
-        LOG("Register containing\t\t","setFaultMasks","\t\twas programmed with the parameter\t\t","MASK_CJ_FAULT_THRESHOLD_LOW");
+        LOG("Register containing\t\tsetFaultMasks\t\twas programmed with the parameter\t\tMASK_CJ_FAULT_THRESHOLD_LOW\r\n");
     }
     else if (val==MASK_TC_FAULT_THRESHOLD_HIGH) {          //Thermocouple High Threshold Fault Mask
         return_val=registerReadWriteByte(ADDRESS_MASK_READ, ADDRESS_MASK_WRITE, MASK_CLEAR_BITS_3, temp_val);
-        LOG("Register containing\t\t","setFaultMasks","\t\twas programmed with the parameter\t\t","MASK_TC_FAULT_THRESHOLD_HIGH");
+        LOG("Register containing\t\tsetFaultMasks\t\twas programmed with the parameter\t\tMASK_TC_FAULT_THRESHOLD_HIGH\r\n");
     }
     else if (val==MASK_TC_FAULT_THRESHOLD_LOW) {           //Thermocouple Low  Threshold Fault Mask
         return_val=registerReadWriteByte(ADDRESS_MASK_READ, ADDRESS_MASK_WRITE, MASK_CLEAR_BITS_2, temp_val);
-        LOG("Register containing\t\t","setFaultMasks","\t\twas programmed with the parameter\t\t","MASK_TC_FAULT_THRESHOLD_LOW");
+        LOG("Register containing\t\tsetFaultMasks\t\twas programmed with the parameter\t\tMASK_TC_FAULT_THRESHOLD_LOW\r\n");
     }
     else if (val==MASK_OVER_UNDER_VOLT_FAULT) {            //Over-Voltage/Under-Voltage Input Fault Mask
         return_val=registerReadWriteByte(ADDRESS_MASK_READ, ADDRESS_MASK_WRITE, MASK_CLEAR_BITS_1, temp_val);
-        LOG("Register containing\t\t","setFaultMasks","\t\twas programmed with the parameter\t\t","MASK_OVER_UNDER_VOLT_FAULT");
+        LOG("Register containing\t\tsetFaultMasks\t\twas programmed with the parameter\t\tMASK_OVER_UNDER_VOLT_FAULT\r\n");
     }
     else if (val==MASK_OPEN_CIRCUIT_FAULT) {               //Thermocouple Open-Circuit Fault Mask
         return_val=registerReadWriteByte(ADDRESS_MASK_READ, ADDRESS_MASK_WRITE, MASK_CLEAR_BITS_0, temp_val);
-        LOG("Register containing\t\t","setFaultMasks","\t\twas programmed with the parameter\t\t","MASK_OPEN_CIRCUIT_FAULT");
+        LOG("Register containing\t\tsetFaultMasks\t\twas programmed with the parameter\t\tMASK_OPEN_CIRCUIT_FAULT\r\n");
     }
     else {
-        LOG("Incorrect parameter selected for Control Register 1 (CR1) bits 3:0. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
+        LOG("Incorrect parameter selected for Mask Register bits 5:0. Default value not changed.\r\nPlease see MAX31856.h for list of valid parameters. \r\n"); 
         return_val=0; //returns a 0 to flag that the parameter wasn't programmed due to wrong parameter in function call
     }
     return return_val;
@@ -446,11 +446,10 @@
 }
 
 bool MAX31856::registerWriteByte(uint8_t write_address, uint8_t val) {   
-    uint8_t buf_read[2];
     //Write the updated byte to the register 
     spiEnable();
-    buf_read[0]=spi.write(write_address);
-    buf_read[1]=spi.write(val);
+    spi.write(write_address);
+    spi.write(val);
     spiDisable();
     return true;
 }