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Diffstat (limited to 'Marlin/src/HAL/AVR/fastio.cpp')
| -rw-r--r-- | Marlin/src/HAL/AVR/fastio.cpp | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/Marlin/src/HAL/AVR/fastio.cpp b/Marlin/src/HAL/AVR/fastio.cpp new file mode 100644 index 0000000..b51d7f9 --- /dev/null +++ b/Marlin/src/HAL/AVR/fastio.cpp @@ -0,0 +1,288 @@ +/** + * Marlin 3D Printer Firmware + * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * + * Based on Sprinter and grbl. + * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm + * + * 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/>. + * + */ + +/** + * Fast I/O for extended pins + */ + +#ifdef __AVR__ + +#include "fastio.h" + +#ifdef FASTIO_EXT_START + +#include "../shared/Marduino.h" + +#define _IS_EXT(P) WITHIN(P, FASTIO_EXT_START, FASTIO_EXT_END) + +void extDigitalWrite(const int8_t pin, const uint8_t state) { + #define _WCASE(N) case N: WRITE(N, state); break + switch (pin) { + default: digitalWrite(pin, state); + #if _IS_EXT(70) + _WCASE(70); + #endif + #if _IS_EXT(71) + _WCASE(71); + #endif + #if _IS_EXT(72) + _WCASE(72); + #endif + #if _IS_EXT(73) + _WCASE(73); + #endif + #if _IS_EXT(74) + _WCASE(74); + #endif + #if _IS_EXT(75) + _WCASE(75); + #endif + #if _IS_EXT(76) + _WCASE(76); + #endif + #if _IS_EXT(77) + _WCASE(77); + #endif + #if _IS_EXT(78) + _WCASE(78); + #endif + #if _IS_EXT(79) + _WCASE(79); + #endif + #if _IS_EXT(80) + _WCASE(80); + #endif + #if _IS_EXT(81) + _WCASE(81); + #endif + #if _IS_EXT(82) + _WCASE(82); + #endif + #if _IS_EXT(83) + _WCASE(83); + #endif + #if _IS_EXT(84) + _WCASE(84); + #endif + #if _IS_EXT(85) + _WCASE(85); + #endif + #if _IS_EXT(86) + _WCASE(86); + #endif + #if _IS_EXT(87) + _WCASE(87); + #endif + #if _IS_EXT(88) + _WCASE(88); + #endif + #if _IS_EXT(89) + _WCASE(89); + #endif + #if _IS_EXT(90) + _WCASE(90); + #endif + #if _IS_EXT(91) + _WCASE(91); + #endif + #if _IS_EXT(92) + _WCASE(92); + #endif + #if _IS_EXT(93) + _WCASE(93); + #endif + #if _IS_EXT(94) + _WCASE(94); + #endif + #if _IS_EXT(95) + _WCASE(95); + #endif + #if _IS_EXT(96) + _WCASE(96); + #endif + #if _IS_EXT(97) + _WCASE(97); + #endif + #if _IS_EXT(98) + _WCASE(98); + #endif + #if _IS_EXT(99) + _WCASE(99); + #endif + #if _IS_EXT(100) + _WCASE(100); + #endif + } +} + +uint8_t extDigitalRead(const int8_t pin) { + #define _RCASE(N) case N: return READ(N) + switch (pin) { + default: return digitalRead(pin); + #if _IS_EXT(70) + _RCASE(70); + #endif + #if _IS_EXT(71) + _RCASE(71); + #endif + #if _IS_EXT(72) + _RCASE(72); + #endif + #if _IS_EXT(73) + _RCASE(73); + #endif + #if _IS_EXT(74) + _RCASE(74); + #endif + #if _IS_EXT(75) + _RCASE(75); + #endif + #if _IS_EXT(76) + _RCASE(76); + #endif + #if _IS_EXT(77) + _RCASE(77); + #endif + #if _IS_EXT(78) + _RCASE(78); + #endif + #if _IS_EXT(79) + _RCASE(79); + #endif + #if _IS_EXT(80) + _RCASE(80); + #endif + #if _IS_EXT(81) + _RCASE(81); + #endif + #if _IS_EXT(82) + _RCASE(82); + #endif + #if _IS_EXT(83) + _RCASE(83); + #endif + #if _IS_EXT(84) + _RCASE(84); + #endif + #if _IS_EXT(85) + _RCASE(85); + #endif + #if _IS_EXT(86) + _RCASE(86); + #endif + #if _IS_EXT(87) + _RCASE(87); + #endif + #if _IS_EXT(88) + _RCASE(88); + #endif + #if _IS_EXT(89) + _RCASE(89); + #endif + #if _IS_EXT(90) + _RCASE(90); + #endif + #if _IS_EXT(91) + _RCASE(91); + #endif + #if _IS_EXT(92) + _RCASE(92); + #endif + #if _IS_EXT(93) + _RCASE(93); + #endif + #if _IS_EXT(94) + _RCASE(94); + #endif + #if _IS_EXT(95) + _RCASE(95); + #endif + #if _IS_EXT(96) + _RCASE(96); + #endif + #if _IS_EXT(97) + _RCASE(97); + #endif + #if _IS_EXT(98) + _RCASE(98); + #endif + #if _IS_EXT(99) + _RCASE(99); + #endif + #if _IS_EXT(100) + _RCASE(100); + #endif + } +} + +#if 0 +/** + * Set Timer 5 PWM frequency in Hz, from 3.8Hz up to ~16MHz + * with a minimum resolution of 100 steps. + * + * DC values -1.0 to 1.0. Negative duty cycle inverts the pulse. + */ +uint16_t set_pwm_frequency_hz(const float &hz, const float dca, const float dcb, const float dcc) { + float count = 0; + if (hz > 0 && (dca || dcb || dcc)) { + count = float(F_CPU) / hz; // 1x prescaler, TOP for 16MHz base freq. + uint16_t prescaler; // Range of 30.5Hz (65535) 64.5KHz (>31) + + if (count >= 255. * 256.) { prescaler = 1024; SET_CS(5, PRESCALER_1024); } + else if (count >= 255. * 64.) { prescaler = 256; SET_CS(5, PRESCALER_256); } + else if (count >= 255. * 8.) { prescaler = 64; SET_CS(5, PRESCALER_64); } + else if (count >= 255.) { prescaler = 8; SET_CS(5, PRESCALER_8); } + else { prescaler = 1; SET_CS(5, PRESCALER_1); } + + count /= float(prescaler); + const float pwm_top = round(count); // Get the rounded count + + ICR5 = (uint16_t)pwm_top - 1; // Subtract 1 for TOP + OCR5A = pwm_top * ABS(dca); // Update and scale DCs + OCR5B = pwm_top * ABS(dcb); + OCR5C = pwm_top * ABS(dcc); + _SET_COM(5, A, dca ? (dca < 0 ? COM_SET_CLEAR : COM_CLEAR_SET) : COM_NORMAL); // Set compare modes + _SET_COM(5, B, dcb ? (dcb < 0 ? COM_SET_CLEAR : COM_CLEAR_SET) : COM_NORMAL); + _SET_COM(5, C, dcc ? (dcc < 0 ? COM_SET_CLEAR : COM_CLEAR_SET) : COM_NORMAL); + + SET_WGM(5, FAST_PWM_ICRn); // Fast PWM with ICR5 as TOP + + //SERIAL_ECHOLNPGM("Timer 5 Settings:"); + //SERIAL_ECHOLNPAIR(" Prescaler=", prescaler); + //SERIAL_ECHOLNPAIR(" TOP=", ICR5); + //SERIAL_ECHOLNPAIR(" OCR5A=", OCR5A); + //SERIAL_ECHOLNPAIR(" OCR5B=", OCR5B); + //SERIAL_ECHOLNPAIR(" OCR5C=", OCR5C); + } + else { + // Restore the default for Timer 5 + SET_WGM(5, PWM_PC_8); // PWM 8-bit (Phase Correct) + SET_COMS(5, NORMAL, NORMAL, NORMAL); // Do nothing + SET_CS(5, PRESCALER_64); // 16MHz / 64 = 250KHz + OCR5A = OCR5B = OCR5C = 0; + } + return round(count); +} +#endif + +#endif // FASTIO_EXT_START +#endif // __AVR__ |