feat: configurable clock phase and polarity for sync spi (#200)

philips-software · Oct 18, 2023 · cbf6d68 · cbf6d68
1 parent 1ce52f9
commit cbf6d68
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/hal_st/synchronous_stm32fxxx/SynchronousSpiMasterStm.cpp b/hal_st/synchronous_stm32fxxx/SynchronousSpiMasterStm.cpp
@@ -17,8 +17,8 @@ namespace hal
         spiHandle.Init.Mode = SPI_MODE_MASTER;
         spiHandle.Init.Direction = SPI_DIRECTION_2LINES;
         spiHandle.Init.DataSize = SPI_DATASIZE_8BIT;
-        spiHandle.Init.CLKPolarity = SPI_POLARITY_LOW;
-        spiHandle.Init.CLKPhase = SPI_PHASE_1EDGE;
+        spiHandle.Init.CLKPolarity = config.polarityLow ? SPI_POLARITY_LOW : SPI_POLARITY_HIGH;
+        spiHandle.Init.CLKPhase = config.phase1st ? SPI_PHASE_1EDGE : SPI_PHASE_2EDGE;
         spiHandle.Init.NSS = SPI_NSS_SOFT;
         spiHandle.Init.BaudRatePrescaler = config.baudRatePrescaler;
         spiHandle.Init.FirstBit = config.msbFirst ? SPI_FIRSTBIT_MSB : SPI_FIRSTBIT_LSB;

diff --git a/hal_st/synchronous_stm32fxxx/SynchronousSpiMasterStm.hpp b/hal_st/synchronous_stm32fxxx/SynchronousSpiMasterStm.hpp
@@ -17,6 +17,8 @@ namespace hal
             {}
 
             bool msbFirst = true;
+            bool polarityLow = true;
+            bool phase1st = true;
             uint32_t baudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
         };