diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h
index 977bf12cd..3fbd25e16 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/impedance_meter.h
@@ -266,7 +266,7 @@ static void ZM_update_instruction_callback(uint8_t ins_type, uint8_t ins_len, ui
 static void ADC_SPI(uint8_t ADCin) {
     // read ADC data
     PIN_setOutputValue(pin_handle, ADC_CS, 0);  // ADC_CS HIGH
-    ZM_spi_transaction(SPI_ADC_TX_SIZE, spi_ADCrxbuf, spi_ADCrxbuf);
+//    ZM_spi_transaction(SPI_ADC_TX_SIZE, spi_ADCrxbuf, spi_ADCrxbuf);
     PIN_setOutputValue(pin_handle, ADC_CS, 1);  // ADC_CS HIGH
 }
 
@@ -279,7 +279,7 @@ static void DAC_outputV(uint8_t command, uint8_t v1, uint8_t v2) {
     }
 
     PIN_setOutputValue(pin_handle, DAC_CS, 0);  // DAC_CS LOW
-    ZM_spi_transaction(SPI_DAC_SIZE, spi_DACtxbuf, spiBackupRx);
+    DAC_spi_transaction(SPI_DAC_SIZE, spi_DACtxbuf, spiBackupRx);
     PIN_setOutputValue(pin_handle, DAC_CS, 1);  // DAC_CS HIGH
 }