Class library for internal ADC and DAC connected by SPI. This library support clock generator using TIM3 for switched-capacitor filter to smooth output signal of DAC. This library includes derivative class to support interrupt occured in end of AD conversion. Validated for ST Nucleo F401RE, F411RE. 内蔵 ADC と,SPI 接続の DAC のためのクラスライブラリ.DAC の出力信号を平滑化するためのスイッチトキャパシタフィルタ用のクロックは TIM3 を使用.ST Nucleo F401RE,F411RE で動作を確認.
Dependents: UITDSP_ADDA_Example UIT2_MovingAv_Intr UIT2_VariableFIR UIT2_VowelSynthesizer ... more
tim4_slaveSelect.hpp
- Committer:
- MikamiUitOpen
- Date:
- 2015-03-16
- Revision:
- 4:03c4518de836
- Child:
- 5:ff25db28bc64
File content as of revision 4:03c4518de836:
//------------------------------------------------------ // Class for generate SPI slave select using TIM4 // // Default pin assignments: PB_6 (D10) // PB_7, PB_8 (D15), and PB_9 (D14) also can be used // 2014/12/21, Copyright (c) 2014 MIKAMI, Naoki //------------------------------------------------------ #ifndef TIM4_SLAVESELECT_HPP #define TIM4_SLAVESELECT_HPP #include "mbed.h" namespace Mikami { class Tim4_ss { public: Tim4_ss(uint16_t psc, // prescaler uint16_t arr = 18, // auto-reload register PinName pin = PB_6) // pin name : myTim_(TIM4) { PwmOut css(pin); myTim_->CR1 |= TIM_CR1_OPM; // one-pulse mode myTim_->PSC = psc; // prescaler myTim_->ARR = arr; // pulse width if (pin == PB_6) myTim_->CCR1 = 1; if (pin == PB_7) myTim_->CCR2 = 1; if (pin == PB_8) myTim_->CCR3 = 1; if (pin == PB_9) myTim_->CCR4 = 1; if ( (pin != PB_6) && (pin != PB_7) &&(pin != PB_8) && (pin != PB_9) ) { fprintf(stderr, "\r\nIllegal pin name in Tim4_ss class\r\n"); while (true) {} } } // Generate slave select void SlaveSelect() { myTim_->CNT = 0; // Set counter 0 myTim_->CR1 |= TIM_CR1_CEN; // Enable TIM4 __NOP(); __NOP(); __NOP(); __NOP(); #ifdef __STM32F411xE_H __NOP(); __NOP(); #endif // __STM32F411xE_H } private: TIM_TypeDef* myTim_; // Forbid to use copy constructor Tim4_ss(const Tim4_ss&); // Forbid to use substitution operator Tim4_ss operator=(const Tim4_ss&); }; } #endif // TIM4_SLAVESELECT_HPP