[SPI] added some TRACEs

src/shared/drivers/spi/SPIBus.h

@@ -25,6 +25,7 @@
 #include <assert.h>
 #include <interfaces/delays.h>
 #include <utils/ClockUtils.h>
+#include <utils/Debug.h>
 
 #include "SPIBusInterface.h"
 
@@ -602,9 +603,11 @@ inline uint8_t SPIBus::transfer(uint8_t data)
     while ((spi->SR & SPI_SR_BSY) > 0)
         ;
 
+    TRACE("Waiting for RXNE\n");
     // Wait until data is received
     while ((spi->SR & SPI_SR_RXNE) == 0)
         ;
+    TRACE("RXNE\n");
 
     // Read the received data item
     return static_cast<uint8_t>(spi->DR);

src/shared/drivers/spi/SPITransaction.cpp

@@ -21,7 +21,7 @@
  */
 
 #include "SPITransaction.h"
-
+#include <utils/Debug.h>
 #include <interfaces/endianness.h>
 
 namespace Boardcore
@@ -255,9 +255,14 @@ void SPITransaction::writeRegister(uint8_t reg, uint8_t data)
     if (slave.config.writeBit == SPI::WriteBit::INVERTED)
         reg |= 0x80;
 
+    TRACE("SPI: writeRegister: reg=%02X, data=%02X\n", reg, data);
+    TRACE("selecting slave %d\n", slave.cs);
     slave.bus.select(slave.cs);
+    TRACE("writing reg\n");
     slave.bus.write(reg);
+    TRACE("writing data\n");
     slave.bus.write(data);
+    TRACE("deselecting slave %d\n", slave.cs);
     slave.bus.deselect(slave.cs);
 }
 

src/shared/sensors/LIS2MDL/LIS2MDL.cpp

@@ -59,8 +59,11 @@ bool LIS2MDL::init()
     }
 
     {
+        TRACE("Starting SPI transaction\n");
         SPITransaction spi(slave);
+        TRACE("writing to CFG_REG_A\n");
         spi.writeRegister(CFG_REG_C, ENABLE_4WSPI | I2C_DISABLE);
+        TRACE("SPI transaction ended\n");
     }
 
     {