Last Updated on 2026-03-07 by researcher
TCEは16ビットカウンターで動作し高分解能(最大160MHz)やWEXと連携できる最大4CHの出力が特徴。
【サンプル】
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#include "avr8_tce.h" void sample(void) { /* 高分解能の指定方法 */ Tce::begin(..., Tce::HREN_OFF); /* default */ Tce::begin(..., Tce::HREN_4X); /* 80MHz (CONFIG_CLOCK_TCE_HREN=1の設定必要) */ Tce::begin(..., Tce::HREN_8X); /* 160Mz (CONFIG_CLOCK_TCE_HREN=1の設定必要) */ /* 周波数生成 */ Tce::begin(1000000, Tce::WGMODE_FRQ, Tce::HREN_OFF); Tce::output(Tce::CMP0); Tce::run(); /* PWM */ Tce::begin(100000, Tce::WGMODE_SINGLESLOPE, Tce::HREN_OFF); Tce::output(Tce::CMP0); Tce::pwmduty(Tce::CMP0, Tce::PWM_MAX_COUNT >> 1); /* Duty = 50% */ Tce::run(); } |
【ライブラリ】
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/* avr8_tce.h - TCE Driver for Microchip AVR8 Series Copyright (c) 2026 Sasapea's Lab. All right reserved. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ #pragma once #include "avr8_config.h" #include "avr8_clock.h" #if defined(TCE0) class Tce { public: static const uint16_t PWM_MAX_COUNT; /* CMP */ typedef enum { CMP0, CMP1, CMP2, CMP3, } CMP; /* Clock Selection */ typedef enum { CLKSEL_DIV1 = TCE_CLKSEL_DIV1_gc, /* System Clock */ CLKSEL_DIV2 = TCE_CLKSEL_DIV2_gc, /* System Clock / 2 */ CLKSEL_DIV4 = TCE_CLKSEL_DIV4_gc, /* System Clock / 4 */ CLKSEL_DIV8 = TCE_CLKSEL_DIV8_gc, /* System Clock / 8 */ CLKSEL_DIV16 = TCE_CLKSEL_DIV16_gc, /* System Clock / 16 */ CLKSEL_DIV64 = TCE_CLKSEL_DIV64_gc, /* System Clock / 64 */ CLKSEL_DIV256 = TCE_CLKSEL_DIV256_gc, /* System Clock / 256 */ CLKSEL_DIV1024 = TCE_CLKSEL_DIV1024_gc /* System Clock / 1024 */ } CLKSEL; /* Waveform generation mode select */ typedef enum { WGMODE_NORMAL = TCE_WGMODE_NORMAL_gc, /* Normal Mode */ WGMODE_FRQ = TCE_WGMODE_FRQ_gc, /* Frequency Generation Mode */ WGMODE_SINGLESLOPE = TCE_WGMODE_SINGLESLOPE_gc, /* Single Slope PWM */ WGMODE_DSTOP = TCE_WGMODE_DSTOP_gc, /* Dual Slope PWM, overflow on TOP */ WGMODE_DSBOTH = TCE_WGMODE_DSBOTH_gc, /* Dual Slope PWM, overflow on TOP and BOTTOM */ WGMODE_DSBOTTOM = TCE_WGMODE_DSBOTTOM_gc /* Dual Slope PWM, overflow on BOTTOM */ } WGMODE; /* Compare # Event select */ typedef enum { CMP0EV_PULSE = TCE_CMP0EV_PULSE_gc, /* Event output for CMP is a pulse */ CMP0EV_WAVEFORM = TCE_CMP0EV_WAVEFORM_gc /* Event output for CMP is equal to waveform */ } CMP0EV; /* Compare # Event select */ typedef enum { CMP1EV_PULSE = TCE_CMP1EV_PULSE_gc, /* Event output for CMP is a pulse */ CMP1EV_WAVEFORM = TCE_CMP1EV_WAVEFORM_gc /* Event output for CMP is equal to waveform */ } CMP1EV; /* Compare # Event select */ typedef enum { CMP2EV_PULSE = TCE_CMP2EV_PULSE_gc, /* Event output for CMP is a pulse */ CMP2EV_WAVEFORM = TCE_CMP2EV_WAVEFORM_gc /* Event output for CMP is equal to waveform */ } CMP2EV; /* Compare # Event select */ typedef enum { CMP3EV_PULSE = TCE_CMP3EV_PULSE_gc, /* Event output for CMP is a pulse */ CMP3EV_WAVEFORM = TCE_CMP3EV_WAVEFORM_gc /* Event output for CMP is equal to waveform */ } CMP3EV; /* Direction select */ typedef enum TCE_DIR_enum { DIR_UP = TCE_DIR_UP_gc, /* Count up */ DIR_DOWN = TCE_DIR_DOWN_gc /* Count down */ } DIR; /* Event Action A select */ typedef enum { EVACTA_CNT_POSEDGE = TCE_EVACTA_CNT_POSEDGE_gc, /* Count on positive edge event */ EVACTA_CNT_ANYEDGE = TCE_EVACTA_CNT_ANYEDGE_gc, /* Count on any edge event */ EVACTA_CNT_HIGHLVL = TCE_EVACTA_CNT_HIGHLVL_gc, /* Count on prescaled clock while event line is 1. */ EVACTA_CNT_UPDOWN = TCE_EVACTA_UPDOWN_gc /* Count on prescaled clock. Event controls count direction. Up-count when event line is 0, down-count when event line is 1. */ } EVACTA; /* Event Action B select */ typedef enum { EVACTB_NONE = TCE_EVACTB_NONE_gc, /* No Action */ EVACTB_UPDOWN = TCE_EVACTB_UPDOWN_gc, /* Count on prescaled clock. Event controls count direction. Up-count when event line is 0, down-count when event line is 1. */ EVACTB_RESTART_POSEDGE = TCE_EVACTB_RESTART_POSEDGE_gc, /* Restart counter at positive edge event */ EVACTB_RESTART_ANYEDGE = TCE_EVACTB_RESTART_ANYEDGE_gc, /* Restart counter on any edge event */ EVACTB_RESTART_HIGHLVL = TCE_EVACTB_RESTART_HIGHLVL_gc /* Restart counter while event line is 1. */ } EVACTB; /* High Resolution Enable select */ typedef enum { HREN_OFF = TCE_HREN_OFF_gc, /* High Resolution Disable */ HREN_4X = TCE_HREN_4X_gc, /* Resolution increased by 4 (2 bits) */ HREN_8X = TCE_HREN_8X_gc /* Resolution increased by 4 (3 bits) */ } HREN; /* Scaled Write select */ typedef enum { SCALE_NORMAL = TCE_SCALE_NORMAL_gc, /* Absolute values used when writing to CMPn, CMPnBUF and registers */ SCALE_FRACTIONAL = TCE_SCALE_FRACTIONAL_gc /* Fractional values used when writing to CMPn, CMPnBUF and registers */ } SCALE; /* Scaling Mode select */ typedef enum { SCALEMODE_CENTER = TCE_SCALEMODE_CENTER_gc, /* CMPn registers scaled vs center (50% duty cycle) */ SCALEMODE_BOTTOM = TCE_SCALEMODE_BOTTOM_gc, /* CMPn registers scaled vs BOTTOM (0% duty cycle) */ SCALEMODE_TOP = TCE_SCALEMODE_TOP_gc, /* CMPn registers scaled vs TOP (100% duty cycle) */ SCALEMODE_TOPBOTTOM = TCE_SCALEMODE_TOPBOTTOM_gc /* CMPn registers scaled vs TOP or BOTTOM depending on written value. */ } SCALEMODE; /* TCE.INTCTRL bit masks and bit positions */ typedef enum { INTCTRL_OVF = TCE_OVF_bm, /* Overflow Interrupt Enable bit mask. */ INTCTRL_CMP0 = TCE_CMP0_bm, /* Compare 0 Interrupt Enable bit mask. */ INTCTRL_CMP1 = TCE_CMP1_bm, /* Compare 1 Interrupt Enable bit mask. */ INTCTRL_CMP2 = TCE_CMP2_bm, /* Compare 2 Interrupt Enable bit mask. */ INTCTRL_CMP3 = TCE_CMP3_bm, /* Compare 3 Interrupt Enable bit mask. */ } INTCTRL; /* TCE.INTFLAGS bit masks and bit positions */ typedef enum { INTFLAGS_OVF = TCE_OVF_bm, /* Overflow Interrupt Enable bit mask. */ INTFLAGS_CMP0 = TCE_CMP0_bm, /* Compare 0 Interrupt Enable bit mask. */ INTFLAGS_CMP1 = TCE_CMP1_bm, /* Compare 1 Interrupt Enable bit mask. */ INTFLAGS_CMP2 = TCE_CMP2_bm, /* Compare 2 Interrupt Enable bit mask. */ INTFLAGS_CMP3 = TCE_CMP3_bm, /* Compare 3 Interrupt Enable bit mask. */ } INTFLAGS; /* Type of Callback Function */ typedef void (*callback_t)(INTFLAGS flags); Tce(void) { } /* virtual */ ~Tce(void) { } static bool begin(uint32_t frq, WGMODE mode, HREN hren = HREN_OFF) { if (frq) { uint8_t lsb = 0; if (mode == WGMODE_NORMAL) hren = HREN_OFF; else { switch (hren) { case HREN_4X: lsb = 2; break; case HREN_8X: lsb = 3; break; default: break; } } uint32_t clk = Clock::frequency() << lsb; if ((mode == WGMODE_FRQ) || (mode >= WGMODE_DSTOP)) clk >>= 1; uint16_t div = (clk / frq + MAX_COUNT) / (MAX_COUNT + 1UL); for (uint8_t i = 0; i < sizeof(CLKDIV) / sizeof(CLKDIV[0]); ++i) { if (div <= CLKDIV[i]) { begin((CLKSEL)(CLKSEL_DIV1 + (i << TCE_CLKSEL_gp)), mode, clk / CLKDIV[i] / frq - (1 << lsb), hren); return true; } } begin((CLKSEL)TCE_CLKSEL_gm, mode, MAX_COUNT, hren); } return false; } static void begin(CLKSEL clksel, WGMODE wgmode, uint16_t period, HREN hren = HREN_OFF) { end(); TCE0.CTRLA = clksel; TCE0.CTRLB = wgmode; TCE0.CTRLC = 0; TCE0.CTRLD = hren; TCE0.CTRLECLR = TCE_LUPD_bm | TCE_DIR_bm; TCE0.CTRLFCLR = 0xFF; TCE0.EVGENCTRL = 0; TCE0.EVCTRL = 0; TCE0.INTCTRL = 0; TCE0.INTFLAGS = 0xFF; TCE0.DBGCTRL = 0; TCE0.CNT = 0; TCE0.PER = period; TCE0.CMP0 = _compare[CMP0] = period; TCE0.CMP1 = _compare[CMP1] = 0; TCE0.CMP2 = _compare[CMP2] = 0; TCE0.CMP3 = _compare[CMP3] = 0; TCE0.AMP = _amplitude = MAX_DUTY; TCE0.OFFSET = 0; _frequency = 0; _callback = 0; } static void end(void) { TCE0.CTRLA = 0; reset(); } static uint32_t frequency(void) { if (_frequency == 0) _frequency = Clock::frequency() / CLKDIV[(TCE0.CTRLA & TCE_CLKSEL_gm) >> TCE_CLKSEL_gp]; return _frequency; } static void runstdby(bool enable = true) { TCE0.CTRLA = (TCE0.CTRLA & ~TCE_RUNSTDBY_bm) | (enable ? TCE_RUNSTDBY_bm : 0); } static void dbgctrl(bool dbgrun = true) { TCE0.DBGCTRL = dbgrun ? TCE_DBGRUN_bm : 0; } static void alupd(bool enable = true) { TCE0.CTRLB = (TCE0.CTRLB & ~TCE_ALUPD_bm) | (enable ? TCE_ALUPD_bm : 0); } static void output(CMP cmp, bool enable = true, bool invert = false, bool ov = false) { uint8_t enm = TCE_CMP0EN_bm << cmp; uint8_t pom = TCE_CMP0POL_bm << cmp; uint8_t ovm = TCE_CMP0OV_bm << cmp; TCE0.CTRLB = (TCE0.CTRLB & ~enm) | (enable ? enm : 0); TCE0.CTRLC = (TCE0.CTRLC & ~(pom | ovm)) | (invert ? pom : 0) | (ov ? ovm : 0); } static void scale(bool enable = true, bool ampen = true, SCALEMODE mode = SCALEMODE_CENTER) { TCE0.CTRLD = (TCE0.CTRLD & ~(TCE_SCALEMODE_gm | TCE_SCALE_bm | TCE_AMPEN_bm)) | mode | (enable ? TCE_SCALE_bm : 0) | (ampen ? TCE_AMPEN_bm : 0); amp(_amplitude); } static void amp(uint16_t value) { TCE0.AMP = _amplitude = value; pwmduty(CMP0, _compare[CMP0]); pwmduty(CMP1, _compare[CMP1]); pwmduty(CMP2, _compare[CMP2]); pwmduty(CMP3, _compare[CMP3]); } static void lockupd(bool enable = true) { if (enable) TCE0.CTRLESET = TCE_LUPD_bm; else TCE0.CTRLECLR = TCE_LUPD_bm; } static void dir(DIR dir = DIR_DOWN) { if (dir) TCE0.CTRLESET = TCE_DIR_bm; else TCE0.CTRLECLR = TCE_DIR_bm; } static void event(CMP cmp, bool enable = true) { uint8_t mask = TCE_CMP0EV_bm << cmp; TCE0.EVGENCTRL = (TCE0.EVGENCTRL & ~mask) | (enable ? mask : 0); } static void evacta(EVACTA evact = EVACTA_CNT_POSEDGE, bool enable = true) { TCE0.EVCTRL = (TCE0.EVCTRL & ~(TCE_EVACTA_gm | TCE_CNTAEI_bm)) | evact | (enable ? TCE_CNTAEI_bm : 0); } static void evactb(EVACTB evact = EVACTB_NONE, bool enable = true) { TCE0.EVCTRL = (TCE0.EVCTRL & ~(TCE_EVACTB_gm | TCE_CNTBEI_bm)) | evact | (enable ? TCE_CNTBEI_bm : 0); } static uint16_t cnt(void) { return TCE0.CNT; } static void per(uint16_t value) { TCE0.PER = value; amp(_amplitude); } static void pwmduty(CMP cmp, uint16_t value) { if ((TCE0.CTRLB & TCE_WGMODE_gm) >= TCE_WGMODE_SINGLESLOPE_gc) { _compare[cmp] = value; if ((TCE0.CTRLD & (TCE_SCALE_bm | TCE_AMPEN_bm)) == (TCE_SCALE_bm | TCE_AMPEN_bm)) value = (uint32_t)value * MAX_DUTY / PWM_MAX_COUNT; else value = (uint32_t)value * TCE0.PER / PWM_MAX_COUNT; ((register16_t *)&TCE0.CMP0)[cmp] = value; } } static void run(void) { TCE0.CTRLA |= TCE_ENABLE_bm; } static void update(void) { command(CMD_UPDATE); } static void restart(void) { command(CMD_RESTART); } static void reset(void) { command(CMD_RESET); } static void callback(callback_t func) { _callback = func; } static void interrupt(INTCTRL ctrl, bool enable = true) { if (enable) { TCE0.INTFLAGS = ctrl; #if CONFIG_TCE_ISR TCE0.INTCTRL |= ctrl; #endif } else { #if CONFIG_TCE_ISR TCE0.INTCTRL &= ~ctrl; #endif TCE0.INTFLAGS = ctrl; } } static void poll(void) { #if !CONFIG_TCE_ISR isr(); #endif } private: static const uint16_t MAX_COUNT; static const uint16_t MAX_DUTY; static const uint16_t CLKDIV[8]; /* Command select */ typedef enum { CMD_NONE = TCE_CMD_NONE_gc, /* No Command */ CMD_UPDATE = TCE_CMD_UPDATE_gc, /* Force Update */ CMD_RESTART = TCE_CMD_RESTART_gc, /* Force Restart */ CMD_RESET = TCE_CMD_RESET_gc /* Force Hard Reset */ } CMD; static uint16_t _amplitude; static uint16_t _compare[4]; static uint32_t _frequency; static callback_t _callback; #if CONFIG_TCE_ISR friend void tce_isr(void); #endif static inline void isr(void) { uint8_t flags = TCE0_INTFLAGS = TCE0_INTFLAGS; if (flags && _callback) _callback((INTFLAGS)flags); } static void command(CMD cmd = CMD_NONE) { TCE0.CTRLESET = cmd; } }; #endif |
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/* avr8_tce.cpp - TCE Driver for Microchip AVR8 Series Copyright (c) 2026 Sasapea's Lab. All right reserved. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ #include "avr8_tce.h" #if defined(TCE0) const uint16_t Tce::MAX_COUNT = 0xFFFF; const uint16_t Tce::PWM_MAX_COUNT = 0xFFFF; const uint16_t Tce::MAX_DUTY = 0x8000; const uint16_t Tce::CLKDIV[] = { 1, 2, 4, 8, 16, 64, 256, 1024 }; uint16_t Tce::_amplitude; uint16_t Tce::_compare[]; uint32_t Tce::_frequency; Tce::callback_t Tce::_callback; #if CONFIG_TCE_ISR inline void tce_isr(void) { Tce::isr(); } ISR(TCE0_OVF_vect) { tce_isr(); } ISR(TCE0_CMP0_vect) { tce_isr(); } ISR(TCE0_CMP1_vect) { tce_isr(); } ISR(TCE0_CMP2_vect) { tce_isr(); } ISR(TCE0_CMP3_vect) { tce_isr(); } #endif #endif |
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