Manuel Caballero
3D Low Frequency Wakeup Receiver
Diff: AS3933.cpp
- Revision:
- 4:10d482ca4eb1
- Parent:
- 3:2de552c4ffbc
--- a/AS3933.cpp Wed Mar 07 16:43:51 2018 +0000
+++ b/AS3933.cpp Tue Mar 13 15:08:21 2018 +0000
@@ -11,7 +11,7 @@
* @version 7/March/2018 The ORIGIN
* @pre N/A.
* @warning N/A
- * @pre This code belongs to Nimbus Centre ( http://unbarquero.blogspot.com ).
+ * @pre This code belongs to Nimbus Centre ( http://www.nimbus.cit.ie ).
*/
#include "AS3933.h"
@@ -71,7 +71,9 @@
// Read R0 register
cmd[0] = ( AS3933_READ | AS3933_R0 );
+ _cs = 1;
mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
+ _cs = 0;
// Mask Channels 1:3
cmd[1] &= ~( EN_A1_MASK | EN_A2_MASK | EN_A3_MASK );
@@ -82,76 +84,73 @@
// Set the channels enabled
- switch ( myEnabledChannels )
- {
- case AS3933_CH1_OFF_CH2_OFF_CH3_OFF:
- cmd[1] &= ( EN_A1_DISABLED | EN_A2_DISABLED | EN_A3_DISABLED );
- break;
+ switch ( myEnabledChannels ) {
+ case AS3933_CH1_OFF_CH2_OFF_CH3_OFF:
+ cmd[1] &= ( EN_A1_DISABLED | EN_A2_DISABLED | EN_A3_DISABLED );
+ break;
- case AS3933_CH1_ON_CH2_OFF_CH3_OFF:
- cmd[1] |= ( EN_A1_ENABLED );
- break;
+ case AS3933_CH1_ON_CH2_OFF_CH3_OFF:
+ cmd[1] |= ( EN_A1_ENABLED );
+ break;
- case AS3933_CH1_OFF_CH2_ON_CH3_OFF:
- cmd[1] |= ( EN_A2_ENABLED );
- break;
+ case AS3933_CH1_OFF_CH2_ON_CH3_OFF:
+ cmd[1] |= ( EN_A2_ENABLED );
+ break;
+
+ case AS3933_CH1_ON_CH2_ON_CH3_OFF:
+ cmd[1] |= ( EN_A1_ENABLED | EN_A2_ENABLED );
+ break;
- case AS3933_CH1_ON_CH2_ON_CH3_OFF:
- cmd[1] |= ( EN_A1_ENABLED | EN_A2_ENABLED );
- break;
+ case AS3933_CH1_OFF_CH2_OFF_CH3_ON:
+ cmd[1] |= ( EN_A3_ENABLED );
+ break;
- case AS3933_CH1_OFF_CH2_OFF_CH3_ON:
- cmd[1] |= ( EN_A3_ENABLED );
- break;
+ case AS3933_CH1_ON_CH2_OFF_CH3_ON:
+ cmd[1] |= ( EN_A1_ENABLED | EN_A3_ENABLED );
+ break;
- case AS3933_CH1_ON_CH2_OFF_CH3_ON:
- cmd[1] |= ( EN_A1_ENABLED | EN_A3_ENABLED );
- break;
+ case AS3933_CH1_OFF_CH2_ON_CH3_ON:
+ cmd[1] |= ( EN_A2_ENABLED | EN_A3_ENABLED );
+ break;
- case AS3933_CH1_OFF_CH2_ON_CH3_ON:
- cmd[1] |= ( EN_A2_ENABLED | EN_A3_ENABLED );
- break;
-
- default:
- case AS3933_CH1_ON_CH2_ON_CH3_ON:
- cmd[1] |= ( EN_A1_ENABLED | EN_A2_ENABLED | EN_A3_ENABLED );
- break;
+ default:
+ case AS3933_CH1_ON_CH2_ON_CH3_ON:
+ cmd[1] |= ( EN_A1_ENABLED | EN_A2_ENABLED | EN_A3_ENABLED );
+ break;
}
// Set Scanning mode
- switch ( myLowPowerMode )
- {
- default:
- case AS3933_STANDARD_LISTENING_MODE:
- break;
+ switch ( myLowPowerMode ) {
+ default:
+ case AS3933_STANDARD_LISTENING_MODE:
+ break;
- case AS3933_SCANNING_MODE:
- if ( ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_ON_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_OFF ) ||
- ( myEnabledChannels == AS3933_CH1_OFF_CH2_ON_CH3_OFF ) || ( myEnabledChannels == AS3933_CH1_OFF_CH2_OFF_CH3_ON ) )
- cmd[1] |= ( MUX_123_ENABLED );
- else
- return AS3933_FAILURE;
+ case AS3933_SCANNING_MODE:
+ if ( ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_ON_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_OFF ) ||
+ ( myEnabledChannels == AS3933_CH1_OFF_CH2_ON_CH3_OFF ) || ( myEnabledChannels == AS3933_CH1_OFF_CH2_OFF_CH3_ON ) )
+ cmd[1] |= ( MUX_123_ENABLED );
+ else
+ return AS3933_FAILURE;
- break;
+ break;
- case AS3933_ON_OFF_MODE:
- if ( ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_ON_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_OFF ) )
- cmd[1] |= ( ON_OFF_ENABLED );
- else
- return AS3933_FAILURE;
- break;
+ case AS3933_ON_OFF_MODE:
+ if ( ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_ON_CH3_ON ) || ( myEnabledChannels == AS3933_CH1_ON_CH2_OFF_CH3_OFF ) )
+ cmd[1] |= ( ON_OFF_ENABLED );
+ else
+ return AS3933_FAILURE;
+ break;
}
// Update power mode and active channels
cmd[0] = ( AS3933_WRITE | AS3933_R0 );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
- if ( myLowPowerMode == AS3933_ON_OFF_MODE )
- {
+ if ( myLowPowerMode == AS3933_ON_OFF_MODE ) {
// Read R4 register
cmd[0] = ( AS3933_READ | AS3933_R4 );
_cs = 1;
@@ -166,7 +165,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R4 );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
}
@@ -220,7 +219,7 @@
// Update artificial wakeup
cmd[0] = ( AS3933_WRITE | AS3933_R8 );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -262,8 +261,8 @@
_cs = 1;
mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
_cs = 0;
-
-
+
+
myF_WAKE->f_wake = cmd[1];
@@ -318,7 +317,7 @@
// Update Crystal oscillator
cmd[0] = ( AS3933_WRITE | AS3933_R1 );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -339,7 +338,7 @@
// Update Clock Generator output signal
cmd[0] = ( AS3933_WRITE | AS3933_R16 );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -367,38 +366,37 @@
*
* @author Manuel Caballero
* @date 7/March/2018
- * @version 7/March/2018 The ORIGIN
+ * @version 12/March/2018 The timeout was removed, the bits for calibration are checked instead.
+ * 7/March/2018 The ORIGIN
* @pre RC-Oscillator: Self Calibration is ONLY available.
+ * @pre There is NO need to calibrate the RC oscillator if the crystal oscillator is enabled.
* @warning In case the pattern detection and the Manchester decoder are not enabled ( R1<1>=0 and R1<3>=1 ) the calibration on the RC-oscillator
* is not needed. Should this not be the case, the RC-oscillator has to be calibrated.
*/
AS3933::AS3933_status_t AS3933::AS3933_CalibrateRC_Oscillator ( void )
{
char cmd[] = { 0, 0 };
- uint32_t myTimeout = 0;
int mySPI_status;
// Start the calibration
cmd[0] = ( AS3933_DIRECT_COMMAND | CALIB_RCO_LC );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
_cs = 0;
// RC oscillator will be calibrated when RC_CAL_OK = '1' ( R14<6> )
- myTimeout = 23232323;
- do{
+ do {
cmd[0] = ( AS3933_READ | AS3933_R14 );
_cs = 1;
mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
_cs = 0;
- myTimeout--;
- } while ( ( ( cmd[1] & RC_CAL_OK_MASK ) != RC_CAL_OK_HIGH ) && ( myTimeout > 0 ) );
+ } while ( ( ( cmd[1] & RC_CAL_OK_MASK ) != RC_CAL_OK_HIGH ) && ( ( cmd[1] & RC_CAL_KO_MASK ) != RC_CAL_KO_HIGH ) );
- if ( ( mySPI_status == SPI_SUCCESS ) && ( myTimeout > 0 ) )
+ if ( ( mySPI_status == SPI_SUCCESS ) && ( ( cmd[1] & RC_CAL_KO_MASK ) != RC_CAL_KO_HIGH ) )
return AS3933_SUCCESS;
else
return AS3933_FAILURE;
@@ -445,7 +443,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R1 );
cmd[1] |= ( myAntennaDamperMode );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -463,7 +461,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R4 );
cmd[1] |= ( myShuntResistor );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -514,7 +512,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R3 );
cmd[1] |= ( mySymbolRates );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -568,7 +566,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R1 );
cmd[1] |= ( myAbsoluteThresholdMode );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -586,7 +584,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R3 );
cmd[1] |= ( myMinimumPreambleLength );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -638,7 +636,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R3 );
cmd[1] |= ( myHysteresisMode | myHysteresisRange );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -689,7 +687,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R4 );
cmd[1] |= ( myGainReductionValue );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -740,7 +738,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R8 );
cmd[1] |= ( myOperatingFrequencyRange );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -791,7 +789,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R2 );
cmd[1] |= ( myTolerance );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -842,7 +840,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R2 );
cmd[1] |= ( myGainBoostMode );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -894,7 +892,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R1 );
cmd[1] |= ( myAGC_CarrierBurstMode | myAGC_OperatingDirection );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -945,7 +943,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R0 );
cmd[1] |= ( myDataMaskMode );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -981,7 +979,7 @@
* @warning N/A.
*/
AS3933::AS3933_status_t AS3933::AS3933_SetCorrelator ( AS3933_r1_en_wpat_value_t myCorrelatorMode, AS3933_r0_patt32_value_t mySymbolPattern, AS3933_r7_t_hbit_value_t myRate,
- AS3933_r1_en_manch_value_t myManchesterDecoderMode )
+ AS3933_r1_en_manch_value_t myManchesterDecoderMode )
{
char cmd[] = { 0, 0 };
int mySPI_status;
@@ -1001,7 +999,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R1 );
cmd[1] |= ( myCorrelatorMode | myManchesterDecoderMode );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -1009,7 +1007,7 @@
// Read R0 register
cmd[0] = ( AS3933_READ | AS3933_R0 );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], 1, &cmd[1], 1 );
+ mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
_cs = 0;
// Mask Pattern extended
@@ -1019,7 +1017,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R0 );
cmd[1] |= ( mySymbolPattern );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -1037,7 +1035,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R7 );
cmd[1] |= ( myRate );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -1080,14 +1078,14 @@
cmd[0] = ( AS3933_WRITE | AS3933_R5 );
cmd[1] = ( myWakeUpPattern.patt2b );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 1 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
// Update PATT1B
cmd[0] = ( AS3933_WRITE | AS3933_R6 );
cmd[1] = ( myWakeUpPattern.patt1b );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 1 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -1130,9 +1128,9 @@
_cs = 1;
mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
_cs = 0;
-
+
myWakeUpPattern->patt2b = cmd[1];
-
+
// Read R6 register
cmd[0] = ( AS3933_READ | AS3933_R6 );
_cs = 1;
@@ -1187,7 +1185,7 @@
cmd[0] = ( AS3933_WRITE | AS3933_R7 );
cmd[1] |= ( myAutomaticTimeOut );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -1229,18 +1227,18 @@
// Select the channel
- switch ( myChannel ){
+ switch ( myChannel ) {
default:
case AS3933_CHANNEL_LF1P:
myAuxRegister = AS3933_R17;
break;
- case AS3933_CHANNEL_LF2P:
- myAuxRegister = AS3933_R18;
+ case AS3933_CHANNEL_LF2P:
+ myAuxRegister = AS3933_R18;
break;
- case AS3933_CHANNEL_LF3P:
- myAuxRegister = AS3933_R19;
+ case AS3933_CHANNEL_LF3P:
+ myAuxRegister = AS3933_R19;
break;
}
@@ -1258,7 +1256,7 @@
cmd[0] = ( AS3933_WRITE | myAuxRegister );
cmd[1] |= ( myAddedCapacitance );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 0 );
+ mySPI_status = _spi.write ( &cmd[0], sizeof( cmd )/sizeof( cmd[0] ), &cmd[0], 2 );
_cs = 0;
@@ -1287,7 +1285,8 @@
*
* @author Manuel Caballero
* @date 7/March/2018
- * @version 7/March/2018 The ORIGIN
+ * @version 12/March/2018 Auto-increment does NOT work when the registers are read
+ * 7/March/2018 The ORIGIN
* @pre N/A.
* @warning N/A.
*/
@@ -1297,18 +1296,37 @@
int mySPI_status;
- // Get All RSSIs
- // Read R10 register ( auto-increment )
+ // Get RSSI1
+ // Read R10 register
cmd[0] = ( AS3933_READ | AS3933_R10 );
_cs = 1;
- mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], sizeof( cmd )/sizeof( cmd[0] ) );
+ mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
_cs = 0;
// Parse the data
- myChannelRSSI->rssi1 = ( cmd[0] & RSSI1_MASK ); // Channel1: RSSI1
- myChannelRSSI->rssi3 = ( cmd[1] & RSSI3_MASK ); // Channel3: RSSI3
- myChannelRSSI->rssi2 = ( cmd[2] & RSSI2_MASK ); // Channel2: RSSI2
+ myChannelRSSI->rssi1 = ( cmd[1] & RSSI1_MASK ); // Channel1: RSSI1
+
+
+ // Get RSSI3
+ // Read R11 register
+ cmd[0] = ( AS3933_READ | AS3933_R11 );
+ _cs = 1;
+ mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
+ _cs = 0;
+ // Parse the data
+ myChannelRSSI->rssi3 = ( cmd[1] & RSSI3_MASK ); // Channel1: RSSI1
+
+
+ // Get RSSI2
+ // Read R12 register
+ cmd[0] = ( AS3933_READ | AS3933_R12 );
+ _cs = 1;
+ mySPI_status = _spi.write ( &cmd[0], 1, &cmd[0], 2 );
+ _cs = 0;
+
+ // Parse the data
+ myChannelRSSI->rssi2 = ( cmd[1] & RSSI2_MASK ); // Channel1: RSSI1
@@ -1349,7 +1367,7 @@
// Send a direct command
cmd = ( AS3933_DIRECT_COMMAND | myDirectCommand );
_cs = 1;
- mySPI_status = _spi.write ( &cmd, 1, &cmd, 0 );
+ mySPI_status = _spi.write ( &cmd, 1, &cmd, 1 );
_cs = 0;