Nucleo-F446RE 内蔵の AD/DA を使うためのライブラリ.DA からの出力は,標本化周波数の4倍のレートで行う.出力の補間フィルタには直線位相の FIR フィルタを使用. このライブラリを登録した際のプログラム: Demo_F446_AD_DA_MultirateLinearPhase. Library for built-in ADC and DAC in Nucleo-F446RE. Sampling rate for DAC is four times of that for ADC. Interpolation filter for output is linear-phase FIR filter.
Dependents: Demo_F446_AD_DA_MultirateLinearPhase
Diff: F446_DAC.cpp
- Revision:
- 1:cd42ecc1e174
- Parent:
- 0:ad30ac2b412b
--- a/F446_DAC.cpp Tue Jul 03 01:29:13 2018 +0000 +++ b/F446_DAC.cpp Wed Nov 28 12:45:18 2018 +0000 @@ -5,7 +5,7 @@ // DAC_OUT1: A2 (PA_4) // DAC_OUT2: D13 (PA_5) // -// 2018/04/16, Copyright (c) 2018 MIKAMI, Naoki +// 2018/11/28, Copyright (c) 2018 MIKAMI, Naoki //-------------------------------------------------------- #include "F446_DAC.hpp" @@ -21,26 +21,14 @@ } if (pin == A2) { - DAC->CR = DAC_CR_EN1 | DAC_CR_TEN1 | DAC_CR_TSEL1; + DAC->CR = DAC_CR_EN1; fpWriteDac = &DacF446::WriteDac1; } else { - DAC->CR = DAC_CR_EN2 | DAC_CR_TEN2 | DAC_CR_TSEL2; + DAC->CR = DAC_CR_EN2; fpWriteDac = &DacF446::WriteDac2; } } +} - // DAC の CH1 へ出力する - void DacF446::WriteDac1(uint16_t val) - { - DAC->DHR12R1 = val; - DAC->SWTRIGR = DAC_SWTRIGR_SWTRIG1; - } - // DAC の CH2 へ出力する - void DacF446::WriteDac2(uint16_t val) - { - DAC->DHR12R2 = val; - DAC->SWTRIGR = DAC_SWTRIGR_SWTRIG2; - } -}