Last Updated on 2026-03-07 by researcher
WEXはTCEからの出力にデッドタイムを挿入したモータードライブ回路などの信号を生成できる。ただ、CLK_PER同期処理なので分解能が最低50ns単位なのがちょっと惜しいかも．．．
【サンプル】
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#include "avr8_tce.h" #include "avr8_wex.h" void sample(void) { Wex::begin(); Wex::deadtime(Wex::DTI0 | Wex::DTI1, 2, 1); Wex::output(Wex::WO0 | Wex::WO1); Tce::begin(100000, Tce::WGMODE_DSTOP); Tce::pwmduty(Tce::CMP0, Tce::PWM_MAX_COUNT >> 1); /* duty = 50% */ Tce::run(); } |
【ライブラリ】
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/* avr8_wex.h - WEX 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" #if defined(WEX0) class Wex { public: /* Dead time insertion */ typedef enum { DTI0 = WEX_DTI0EN_bm, DTI1 = WEX_DTI1EN_bm, DTI2 = WEX_DTI2EN_bm, DTI3 = WEX_DTI3EN_bm } DTI; /* Dead time swap */ typedef enum { SWAP0 = WEX_SWAP0_bm, SWAP1 = WEX_SWAP1_bm, SWAP2 = WEX_SWAP2_bm, SWAP3 = WEX_SWAP3_bm } SWAP; /* WEX Output WOn */ typedef enum { WO_OFF = 0, WO0 = 0x01, WO1 = 0x02, WO2 = 0x04, WO3 = 0x08, WO4 = 0x10, WO5 = 0x20, WO6 = 0x40, WO7 = 0x80, } WO; /* Event Control */ typedef enum { EVENTA, EVENTB, EVENTC, } EVENT; /* Input Matrix select */ typedef enum { INMX_DIRECT = WEX_INMX_DIRECT_gc, /* Direct from TCE0 */ INMX_CWCMA = WEX_INMX_CWCMA_gc, /* Common Waveform Channel Mode A. Single WO */ INMX_CWCMB = WEX_INMX_CWCMB_gc /* Common Waveform Channel Mode B. WO from two PWM channels */ } INMX; /* Update Source select */ typedef enum { UPDSRC_TCPWM0 = WEX_UPDSRC_TCPWM0_gc, /* Timer/Counter for PWM 0 update condition */ UPDSRC_SW = WEX_UPDSRC_SW_gc /* Software update only. No hardware update condition */ } UPDSRC; /* Blanking Prescaler select */ typedef enum { BLANKPRESC_DIV1 = WEX_BLANKPRESC_DIV1_gc, /* No prescaling */ BLANKPRESC_DIV4 = WEX_BLANKPRESC_DIV4_gc, /* Divide CLK_PER by 4 */ BLANKPRESC_DIV16 = WEX_BLANKPRESC_DIV16_gc, /* Divide CLK_PER by 16 */ BLANKPRESC_DIV64 = WEX_BLANKPRESC_DIV64_gc /* Divide CLK_PER by 64 */ } BLANKPRESC; /* Blanking State select */ typedef enum { BLANKSTATE_OFF = WEX_BLANKSTATE_OFF_gc, /* Blanking off */ BLANKSTATE_ON = WEX_BLANKSTATE_ON_gc /* Blanking active */ } BLANKSTATE; /* Blanking Trigger select */ typedef enum { BLANKTRIG_NONE = WEX_BLANKTRIG_NONE_gc, /* No HW trigger (Software only) */ BLANKTRIG_TCE0UPD = WEX_BLANKTRIG_TCE0UPD_gc, /* TCE0 Update Condition */ BLANKTRIG_TCE0CMP0 = WEX_BLANKTRIG_TCE0CMP0_gc, /* TCE0 Compare 0 */ BLANKTRIG_TCE0CMP1 = WEX_BLANKTRIG_TCE0CMP1_gc, /* TCE0 Compare 1 */ BLANKTRIG_TCE0CMP2 = WEX_BLANKTRIG_TCE0CMP2_gc, /* TCE0 Compare 2 */ BLANKTRIG_TCE0CMP3 = WEX_BLANKTRIG_TCE0CMP3_gc /* TCE0 Compare 3 */ } BLANKTRIG; /* Fault Detection Action select */ typedef enum { FDACT_NONE = WEX_FDACT_NONE_gc, /* None. Fault Protection Disabled */ FDACT_LOW = WEX_FDACT_LOW_gc, /* Drive all pins low */ FDACT_CUSTOM = WEX_FDACT_CUSTOM_gc /* Drive all pins to setting defined by FAULTDRV and FAULTVAL */ } FDACT; /* Fault Detection Restart Mode select */ typedef enum { FDMODE_LATCHED = WEX_FDMODE_LATCHED_gc, /* Latched Mode. Output will remain in fault state until fault condition is no longer active and FDF is cleared by SW. */ FDMODE_CBC = WEX_FDMODE_CBC_gc /* Cycle-by-cycle mode. Waveform output will remain in fault state until fault condition is no longer active. */ } FDMODE; /* Fault Detection on Debug Break Detection select */ typedef enum { FDDBD_FAULT = WEX_FDDBD_FAULT_gc, /* OCD Break request is treated as a fault if fault protection is enabled */ FDDBD_IGNORE = WEX_FDDBD_IGNORE_gc /* OCD Breask request will not trigger a fault */ } FDDBD; /* Fault Event Filter Enable select */ typedef enum { FILTER_ZERO = WEX_FILTER_ZERO_gc, /* No digital filter */ FILTER_SAMPLE1 = WEX_FILTER_SAMPLE1_gc, /* One Sample */ FILTER_SAMPLE2 = WEX_FILTER_SAMPLE2_gc, /* Two Samples */ FILTER_SAMPLE3 = WEX_FILTER_SAMPLE3_gc, /* Three Samples */ FILTER_SAMPLE4 = WEX_FILTER_SAMPLE4_gc, /* Four Samples */ FILTER_SAMPLE5 = WEX_FILTER_SAMPLE5_gc, /* Five Samples */ FILTER_SAMPLE6 = WEX_FILTER_SAMPLE6_gc, /* Six Samples */ FILTER_SAMPLE7 = WEX_FILTER_SAMPLE7_gc /* Seven Samples */ } FILTER; /* WEX.INTCTRL bit masks and bit positions */ typedef enum { INTCTRL_FAULTDET = WEX_FAULTDET_bm /* Fault Detection Interrupt Enable bit mask. */ } INTCTRL; /* WEX.INTFLAGS bit masks and bit positions */ typedef enum { INTFLAGS_FAULTDET = WEX_FAULTDET_bm, /* Fault Detection Interrupt Enable bit mask. */ INTFLAGS_FDFEVA = WEX_FDFEVA_bm, /* Fault Detection Flag Event Input A bit mask. */ INTFLAGS_FDFEVB = WEX_FDFEVB_bm, /* Fault Detection Flag Event Input B bit mask. */ INTFLAGS_FDFEVC = WEX_FDFEVC_bm /* Fault Detection Flag Event Input C bit mask. */ } INTFLAGS; /* WEX.STATUS bit masks and bit positions */ typedef enum { STATUS_FDSTATE = WEX_FDSTATE_bm, /* Fault Detection State bit mask. */ STATUS_FDSEVA = WEX_FDSEVA_bm, /* Fault Detection State Event A bit mask. */ STATUS_FDSEVB = WEX_FDSEVB_bm, /* Fault Detection State Event B bit mask. */ STATUS_FDSEVC = WEX_FDSEVC_bm, /* Fault Detection State Event C bit mask. */ STATUS_BLANKSTATE = WEX_BLANKSTATE_bm /* Blanking State bit mask. */ } STATUS; /* Type of Callback Function */ typedef void (*callback_t)(INTFLAGS flags); Wex(void) { } /* virtual */ ~Wex(void) { } static void begin(bool pgm = false, INMX inmx = INMX_DIRECT, UPDSRC updsrc = UPDSRC_TCPWM0) { end(); WEX0.CTRLA = inmx | (pgm ? WEX_PGM_bm : 0); WEX0.CTRLB = updsrc; WEX0.CTRLC = 0; WEX0.EVCTRLA = 0; WEX0.EVCTRLB = 0; WEX0.EVCTRLC = 0; WEX0.BUFCTRL = 0; WEX0.BLANKCTRL = 0; WEX0.BLANKTIME = 0; WEX0.FAULTCTRL = 0; WEX0.FAULTDRV = 0; WEX0.FAULTOUT = 0; WEX0.INTCTRL = 0; WEX0.INTFLAGS = 0xFF; WEX0.DTLS = 0; WEX0.DTHS = 0; WEX0.DTBOTH = 0; WEX0.SWAP = 0; WEX0.PGMOVR = 0; WEX0.PGMOUT = 0; WEX0.OUTOVEN = 0; _callback = 0; } static void end(void) { WEX0.CTRLA = 0; } static void deadtime(/* DTI */ uint8_t dti, uint8_t ls, uint8_t hs) { WEX0.CTRLA = (WEX0.CTRLA & ~(WEX_DTI3EN_bm | WEX_DTI2EN_bm | WEX_DTI1EN_bm | WEX_DTI0EN_bm)) | dti; WEX0.DTLS = ls; WEX0.DTHS = hs; } static void swap(/* SWAP */ uint8_t swap) { WEX0.SWAP = swap; } static void output(/* WO */ uint8_t ovr) { WEX0.OUTOVEN = ovr; } static void pgmovr(/* WO */ uint8_t ovr) { WEX0.PGMOVR = ovr; } static void pgmout(/* WO */ uint8_t out) { WEX0.PGMOUT = out; } static /* WO */ uint8_t pgmout(void) { return WEX0.PGMOUT; } static void fault(FDACT act = FDACT_LOW, FDMODE mode = FDMODE_LATCHED, FDDBD dbd = FDDBD_FAULT) { WEX0.FAULTCTRL = dbd | mode | act; } static void faultovr(/* WO */ uint8_t drv, /* WO */ uint8_t out) { WEX0.FAULTDRV = drv; WEX0.FAULTOUT = out; } static void evctrl(EVENT event, bool enable = true, bool blank = true, FILTER filter = FILTER_SAMPLE3) { (&WEX0.EVCTRLA)[event] = filter | (blank ? WEX_BLANK_bm : 0) | (enable ? WEX_FAULTEI_bm : 0); } static void blank(BLANKPRESC presc = BLANKPRESC_DIV1, BLANKTRIG trig = BLANKTRIG_TCE0UPD, uint8_t time = 3) { WEX0.BLANKCTRL = presc | trig; WEX0.BLANKTIME = time; } static STATUS status(void) { return (STATUS)WEX0.STATUS; } static void update(void) { command(CMD_UPDATE); } static void fault(bool set) { command(set ? CMD_FAULTSET : CMD_FAULTCLR); } static void blank(bool set) { command(set ? CMD_BLANKSET : CMD_BLANKCLR); } static void callback(callback_t func) { _callback = func; } static void interrupt(INTCTRL ctrl = INTCTRL_FAULTDET, bool enable = true) { if (enable) { WEX0.INTFLAGS = ctrl; #if CONFIG_WEX_ISR WEX0.INTCTRL |= ctrl; #endif } else { #if CONFIG_WEX_ISR WEX0.INTCTRL &= ~ctrl; #endif WEX0.INTFLAGS = ctrl; } } static void poll(void) { #if !CONFIG_WEX_ISR isr(); #endif } private: /* Command select */ typedef enum { CMD_NONE = WEX_CMD_NONE_gc, /* No Command */ CMD_UPDATE = WEX_CMD_UPDATE_gc, /* Force update of Dead-time, SWAP and PGM buffer registers. */ CMD_FAULTSET = WEX_CMD_FAULTSET_gc, /* Set Fault Detection */ CMD_FAULTCLR = WEX_CMD_FAULTCLR_gc, /* Clear Fault Detection */ CMD_BLANKSET = WEX_CMD_BLANKSET_gc, /* Set SW Blanking */ CMD_BLANKCLR = WEX_CMD_BLANKCLR_gc /* Clear SW Blanking */ } CMD; static callback_t _callback; #if CONFIG_WEX_ISR friend void wex_isr(void); #endif static inline void isr(void) { uint8_t flags = WEX0.INTFLAGS = WEX0.INTFLAGS; if (flags && _callback) _callback((INTFLAGS)flags); } static void command(CMD cmd = CMD_NONE) { WEX0.CTRLC = cmd; } }; #endif |
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/* avr8_wex.cpp - WEX 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_wex.h" #if defined(WEX0) Wex::callback_t Wex::_callback; #if CONFIG_WEX_ISR inline void wex_isr(void) { Wex::isr(); } ISR(WEX0_FAULTDET_vect) { wex_isr(); } #endif #endif |
【関連投稿】
Microchip AVR8 用のライブラリを自作する。(GPIO)
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Microchip AVR8 用のライブラリを自作する。(CLOCK)
Microchip AVR8 用のライブラリを自作する。(RESET)
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Microchip AVR8 用のライブラリを自作する。(TCA)
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Microchip AVR8 用のライブラリを自作する。(VREF)
Microchip AVR8 用のライブラリを自作する。(DAC)
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Microchip AVR8 用のライブラリを自作する。(ADC)
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Microchip AVR8 用のライブラリを自作する。(TWI)
Microchip AVR8 用のライブラリを自作する。(MAIN)
Microchip AVR8 用のライブラリを自作する。(CONFIG)
Microchip AVR8 用のライブラリを自作する。(ALARM)
Microchip AVR8 用のライブラリを自作する。(TASK)
Microchip AVR8 用のライブラリを自作する。(CCL)
Microchip AVR8 用のライブラリを自作する。(TCD)
Microchip AVR8 用のライブラリを自作する。(TCE)
Microchip AVR8 用のライブラリを自作する。(WEX)
Microchip AVR8 用のライブラリを自作する。(TCF)
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