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author | Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com> | 2021-03-04 20:54:23 +0300 |
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committer | Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com> | 2021-03-04 20:54:23 +0300 |
commit | e8701195e66f2d27ffe17fb514eae8173795aaf7 (patch) | |
tree | 9f519c4abf6556b9ae7190a6210d87ead1dfadde /Marlin/src/HAL/LPC1768/timers.cpp | |
download | kp3s-lgvl-e8701195e66f2d27ffe17fb514eae8173795aaf7.tar.xz kp3s-lgvl-e8701195e66f2d27ffe17fb514eae8173795aaf7.zip |
Initial commit
Diffstat (limited to 'Marlin/src/HAL/LPC1768/timers.cpp')
-rw-r--r-- | Marlin/src/HAL/LPC1768/timers.cpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/Marlin/src/HAL/LPC1768/timers.cpp b/Marlin/src/HAL/LPC1768/timers.cpp new file mode 100644 index 0000000..a7a4058 --- /dev/null +++ b/Marlin/src/HAL/LPC1768/timers.cpp @@ -0,0 +1,65 @@ +/** + * Marlin 3D Printer Firmware + * + * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com + * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com + * + * 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/>. + * + */ + +/** + * Description: + * + * Timers for LPC1768 + */ + +#ifdef TARGET_LPC1768 + +#include "../../inc/MarlinConfig.h" + +void HAL_timer_init() { + SBI(LPC_SC->PCONP, SBIT_TIMER0); // Power ON Timer 0 + LPC_TIM0->PR = (HAL_TIMER_RATE) / (STEPPER_TIMER_RATE) - 1; // Use prescaler to set frequency if needed + + SBI(LPC_SC->PCONP, SBIT_TIMER1); // Power ON Timer 1 + LPC_TIM1->PR = (HAL_TIMER_RATE) / 1000000 - 1; +} + +void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) { + switch (timer_num) { + case 0: + LPC_TIM0->MCR = _BV(SBIT_MR0I) | _BV(SBIT_MR0R); // Match on MR0, reset on MR0, interrupts when NVIC enables them + LPC_TIM0->MR0 = uint32_t(STEPPER_TIMER_RATE) / frequency; // Match value (period) to set frequency + LPC_TIM0->TCR = _BV(SBIT_CNTEN); // Counter Enable + + NVIC_SetPriority(TIMER0_IRQn, NVIC_EncodePriority(0, 1, 0)); + NVIC_EnableIRQ(TIMER0_IRQn); + break; + + case 1: + LPC_TIM1->MCR = _BV(SBIT_MR0I) | _BV(SBIT_MR0R); // Match on MR0, reset on MR0, interrupts when NVIC enables them + LPC_TIM1->MR0 = uint32_t(TEMP_TIMER_RATE) / frequency; + LPC_TIM1->TCR = _BV(SBIT_CNTEN); // Counter Enable + + NVIC_SetPriority(TIMER1_IRQn, NVIC_EncodePriority(0, 2, 0)); + NVIC_EnableIRQ(TIMER1_IRQn); + break; + + default: break; + } +} + +#endif // TARGET_LPC1768 |