add adc process
This commit is contained in:
Kizarm
parent
fc31db365d
commit
a4c3361300
4 changed files with 58 additions and 24 deletions
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@ -17,7 +17,7 @@ DEL = rm -f
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# zdrojaky
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OBJS = main.o adcclass.o
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#OBJS += usartclass.o print.o
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OBJS += usartclass.o print.o
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include $(TARGET)/$(TOOL).mk
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BOBJS = $(addprefix $(BLD),$(OBJS))
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@ -1,22 +1,14 @@
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#include "system.h"
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#include "oneway.h"
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#include "adcclass.h"
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#include "gpio.h"
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static GpioClass led (GPIOD, 4);
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static AdcClass * pInstance = nullptr;
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volatile unsigned gCount = 0u;
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extern "C" void DMA1_Channel1_IRQHandler( void ) __attribute__((interrupt));
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void DMA1_Channel1_IRQHandler( void ) {
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DMA1_Type::INTFR_DEF state (DMA1.INTFR);
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DMA1.INTFCR.R = state.R; // clear all
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if (!pInstance) return;
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gCount += 1u;
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const bool b = (gCount & 1u) == 0u;
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led << b;
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if (state.B.HTIF1 != RESET) pInstance->send (false);
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else if (state.B.TCIF1 != RESET) pInstance->send (true);
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}
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@ -47,12 +39,16 @@ static inline void Timer2Init (uint32_t us) noexcept {
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TIM2.PSC.R = 47u; // 1 MHz Fs
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TIM2.ATRLR.R = us - 1u;
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// TRGO update for ADC
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TIM2.CTLR2.B.MMS = 2;
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TIM2.CTLR2.B.MMS = 2u;
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}
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static inline void AdcCalibrate (void) noexcept {
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ADC1.RSQR3.B.SQ1 = 1u; // CH1
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// RESET
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RCC.APB2PRSTR.B.ADC1RST = SET;
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RCC.APB2PRSTR.B.ADC1RST = RESET;
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// set channels
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ADC1.RSQR3.B.SQ1 = 2u; // CH2
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ADC1.RSQR1.B.L = 0u; // 1 regular conversion
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ADC1.SAMPTR2_CHARGE2.B.SMP1_TKCG1 = 7u;
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ADC1.SAMPTR2_CHARGE2.B.SMP2_TKCG2 = 7u;
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ADC1.CTLR1.B.SCAN = SET;
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ADC1.CTLR2.B.ADON = SET;
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@ -60,7 +56,6 @@ static inline void AdcCalibrate (void) noexcept {
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while (ADC1.CTLR2.B.RSTCAL != RESET); // Wait until RSTCAL=0
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ADC1.CTLR2.B.CAL = SET; // Launch the calibration by setting CAL
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while (ADC1.CTLR2.B.CAL != RESET); // Wait until CAL=0
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ADC1.CTLR2.B.ADON = RESET;
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}
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typedef __SIZE_TYPE__ size_t;
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static inline void Dma1Ch1Init (void * ptr) noexcept {
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@ -72,12 +67,14 @@ static inline void Dma1Ch1Init (void * ptr) noexcept {
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DMA1.CNTR1 .R = FULL_LEN;
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// Configure increment, size, interrupts and circular mode
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DMA1.CFGR1.modify([] (DMA1_Type::CFGR1_DEF & r) -> auto {
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r.B.MINC = SET;
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r.B.MSIZE = 1u;
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r.B.PSIZE = 1u;
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r.B.HTIE = SET;
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r.B.TCIE = SET;
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r.B.CIRC = SET;
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r.B.PL = 3u; // highest priority
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r.B.MEM2MEM = RESET; // periferal -> memory
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r.B.MINC = SET; // memory increment
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r.B.MSIZE = 1u; // 16-bit
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r.B.PSIZE = 1u; // 16-bit
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r.B.HTIE = SET; // INT Enable HALF
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r.B.TCIE = SET; // INT Enable FULL
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r.B.CIRC = SET; // Circular MODE
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// Enable DMA Channel 1
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r.B.EN = SET;
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return r.R;
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@ -89,11 +86,10 @@ static inline void AdcPostInit (void) noexcept {
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r.B.EXTTRIG = SET;
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r.B.EXTSEL = 3u; // TRGO event of timer 2
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r.B.SWSTART = SET;
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r.B.ADON = SET;
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return r.R;
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});
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}
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////////////////////////////////////////////////////////////////////////////////////
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AdcClass::AdcClass() noexcept : pL (buffer), pH (buffer + HALF_LEN), dst (nullptr) {
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pInstance = this;
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EnableClock ();
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38
adc/main.cpp
38
adc/main.cpp
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@ -2,11 +2,49 @@
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#include "usartclass.h"
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#include "print.h"
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#include "adcclass.h"
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#include "oneway.h"
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//////////////////////////////////////
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class Process : public OneWay {
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GpioClass led;
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UsartClass serial;
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Print cout;
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FIFO<uint16_t, 8> data;
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int pass_cnt;
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public:
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explicit Process () noexcept : OneWay (),
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led (GPIOD, 4), serial (115200u), cout (DEC), data(), pass_cnt (0) {
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cout += serial;
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}
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unsigned Send (uint16_t * const ptr, const unsigned len) override {
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unsigned sum = 0u;
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for (unsigned n=0; n<len; n++) sum += ptr [n];
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sum >>= 4;
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data.Write (static_cast<uint16_t> (sum));
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return len;
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}
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void pass () {
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uint16_t avg;
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if (!data.Read (avg)) return;
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cout << "pass: " << pass_cnt << ", avg = " << static_cast<int>(avg) << EOL;
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pass_cnt += 1;
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const bool b = pass_cnt & 1;
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led << b;
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}
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};
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//////////////////////////////////////
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/* Tohle DEMO je složitější. ADC má
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* pevnou frekvenci vzorkování 1kHz,
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* vzorky se průměrují v přerušení a
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* vypisují (v jiném přerušení) na
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* sériový port.
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* */
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//////////////////////////////////////
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static AdcClass adc;
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static Process out;
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int main () {
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adc.attach(out);
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for (;;) {
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out.pass();
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}
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return 0;
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}
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@ -32,7 +32,7 @@ struct NVIC_Type {
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IRER [((uint32_t)(IRQ) >> 5)] = (1 << ((uint32_t)(IRQ) & 0x1F));
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}
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};
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NVIC_Type & NVIC = * reinterpret_cast<NVIC_Type * const> (0xE000E000);
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static NVIC_Type & NVIC = * reinterpret_cast<NVIC_Type * const> (0xE000E000);
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struct SysTick_Type {
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union CTLR_DEF {
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struct {
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@ -68,6 +68,6 @@ struct SysTick_Type {
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NVIC.EnableIRQ (SysTicK_IRQn);
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}
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};
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SysTick_Type & SysTick = * reinterpret_cast<SysTick_Type * const> (0xE000F000);
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static SysTick_Type & SysTick = * reinterpret_cast<SysTick_Type * const> (0xE000F000);
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#endif // SYSTEM_H
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