Diff: F446_DAC.cpp

Revision:

0:c945b4fe9a48

Child:

1:6b9f2af6613d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/F446_DAC.cpp	Fri Nov 11 06:28:48 2016 +0000
@@ -0,0 +1,30 @@
+//--------------------------------------------------------
+//  Class for buit-in dual DAC on STM32F446
+//
+//  STM32F446 内蔵の DAC 用のクラス
+//      Analog Out1: A2  (PA_4)
+//      Analog Out2: D13 (PA_5)
+//
+//  2016/11/11, Copyright (c) 2016 MIKAMI, Naoki
+//--------------------------------------------------------
+
+#include "F446_DAC.hpp"
+
+namespace Mikami
+{
+    void DacDual::ScfClock(uint32_t clock)
+    {
+        PwmOut clockSCF(D12);   // PA6
+
+        uint32_t arr;
+        if ((RCC->DCKCFGR & RCC_DCKCFGR_TIMPRE) == RCC_DCKCFGR_TIMPRE)
+            arr = SystemCoreClock/clock - 1;
+        else
+            arr = SystemCoreClock/(2*clock) - 1;
+        TIM3->ARR =  arr;
+        TIM3->PSC = 0;
+
+        // Set capture/compare register 1
+        TIM3->CCR1 = (TIM3->ARR + 1)/2;    
+    }
+}
\ No newline at end of file