dac fw module

1 files changed, 36 insertions, 0 deletions

diff --git a/fw/dac.h b/fw/dac.h
new file mode 100644
index 0000000..7bbf66a
--- /dev/null
+++ b/fw/dac.h
@@ -0,0 +1,36 @@
+/* Microchip MCP4912 10-bit DAC
+ *
+ * Device: PIC16F1459
+ * Compiler: XC8 v3.00
+ *
+ * Usage:
+ *
+ * #include <stdint.h>
+ * #include "types.h"
+ * #include "spi.h"
+ * #include "dac.h"
+ */
+
+// Pin mapping
+#define DAC1_CS_TRIS TRISBbits.TRISB7
+#define DAC1_CS LATBbits.LATB7
+#define DAC2_CS_TRIS TRISBbits.TRISB5
+#define DAC2_CS LATBbits.LATB5
+
+void dacInit(void);
+
+// Set DAC1 VOUTA.
+// Only the lower 10 bits are used.
+void dacSet1a(U16 level);
+
+// Set DAC1 VOUTB.
+// Only the lower 10 bits are used.
+void dacSet1b(U16 level);
+
+// Set DAC2 VOUTA.
+// Only the lower 10 bits are used.
+void dacSet2a(U16 level);
+
+// Set DAC2 VOUTB.
+// Only the lower 10 bits are used.
+void dacSet2b(U16 level);