Diff: spi/mbedSPI.cpp

Revision:

0:20bce0dcc921

Child:

1:b2a9a6f2c30e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spi/mbedSPI.cpp	Tue Dec 20 01:51:02 2016 +0000
@@ -0,0 +1,48 @@
+#include "mbedSPI.h"
+#include "BitOrder.h"
+
+mbedSPI::mbedSPI() : spi(SPI_MOSI,SPI_MISO,SPI_SCLK), cs(SPI_CS_ASR_1,SPI_CS_DEASSERT)
+{
+    spi.format(SPI_NUM_BITS_PER_FRAME, SPI_MODE_0);
+    spi.frequency(SPI_FREQ);
+#if defined (TARGET_KL25Z)
+    #ifndef SPI0_C1
+        #define SPI0_C1 (*(uint8_t *)0x40076000)
+    #endif
+    SPI0_C1 |= 0x01 ; /* LSB First */
+#elif defined (TARGET_TEENSY3_1)
+    #define SPI0_CTAR0  ((uint32_t *)0x04002C00C)
+    #define LSBFE_MASK 0x01000000
+    *SPI0_CTAR0 |= LSBFE_MASK ;
+#endif
+}
+
+void mbedSPI::begin()
+{
+}
+
+void mbedSPI::beginSPI() /* settings are in this class */
+{
+    cs = SPI_CS_ASSERT;
+    wait_us(1);
+}
+
+void mbedSPI::endSPI()
+{
+    cs = SPI_CS_DEASSERT;
+}
+
+void mbedSPI::transfer(char *bytes,int len)
+{
+  int i = 0;
+  
+  for(;i<len;++i)
+  {
+#if defined (TARGET_KL25Z) || (TARGET_TEENSY3_1)
+    bytes[i] = spi.write(bytes[i]) ;
+#else
+    char c = spi.write(BitOrder::flip(bytes[i]));
+    bytes[i] = BitOrder::flip(c);
+#endif
+  }
+}
\ No newline at end of file