You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
2.2 KiB
65 lines
2.2 KiB
/**
|
|
* 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 MF_TIMER_STEP:
|
|
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 MF_TIMER_TEMP:
|
|
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
|
|
|