Library for build-in ADC and DAC in STM32F446 mounted on Nucleo F446RE. For single channel. Nucleo F446RE に搭載されている STM32F446 の内蔵 ADC, DAC 用のライブラリ．1チャンネルで使う場合．
Dependents: Demo_F446_AD_DA_Single F446ZE-mbed-devfiles
Diff: F446_DAC_Single.cpp
- Revision:
- 0:2a5690e56a16
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/F446_DAC_Single.cpp Tue Feb 21 00:40:10 2017 +0000
@@ -0,0 +1,56 @@
+//--------------------------------------------------------
+// Class for buit-in single DAC on STM32F446
+//
+// STM32F446 内蔵の DAC 用のクラス
+// DAC_OUT1: A2 (PA_4)
+// DAC_OUT2: D13 (PA_5)
+//
+// 2017/02/21, Copyright (c) 2017 MIKAMI, Naoki
+//--------------------------------------------------------
+
+#include "F446_DAC_Single.hpp"
+
+namespace Mikami
+{
+ DacSingle::DacSingle(PinName pin) : da_(pin)
+ {
+ if (pin == A2)
+ {
+ DAC->CR = DAC_CR_EN1 | DAC_CR_TEN1 | DAC_CR_TSEL1;
+ fpWriteDac = &DacSingle::WriteDac1;
+ }
+ else
+ {
+ DAC->CR = DAC_CR_EN2 | DAC_CR_TEN2 | DAC_CR_TSEL2;
+ fpWriteDac = &DacSingle::WriteDac2;
+ }
+ }
+
+ // Write single-channel data
+ void DacSingle::WriteDac1(uint16_t val)
+ {
+ DAC->DHR12R1 = val;
+ DAC->SWTRIGR = DAC_SWTRIGR_SWTRIG1;
+ }
+ void DacSingle::WriteDac2(uint16_t val)
+ {
+ DAC->DHR12R2 = val;
+ DAC->SWTRIGR = DAC_SWTRIGR_SWTRIG2;
+ }
+
+ void DacSingle::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;
+ }
+}