mirror of
https://github.com/MarlinFirmware/Marlin.git
synced 2024-12-14 22:41:35 +00:00
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
|
/**
|
||
|
* Marlin 3D Printer Firmware
|
||
|
*
|
||
|
* Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Description:
|
||
|
*
|
||
|
* For TARGET_LPC1768
|
||
|
*/
|
||
|
|
||
|
#ifdef TARGET_LPC1768
|
||
|
|
||
|
#include "../HAL.h"
|
||
|
#include "HAL_timers.h"
|
||
|
|
||
|
void HAL_timer_init(void) {
|
||
|
LPC_SC->PCONP |= (0x1 << 0x1); // power on timer0
|
||
|
LPC_TIM0->PR = ((HAL_TIMER_RATE / HAL_STEPPER_TIMER_RATE) - 1); // Use prescaler to set frequency if needed
|
||
|
|
||
|
LPC_SC->PCONP |= (0x1 << 0x2); // power on timer1
|
||
|
LPC_TIM1->PR = ((HAL_TIMER_RATE / 1000000) - 1);
|
||
|
}
|
||
|
|
||
|
void HAL_timer_start(uint8_t timer_num, uint32_t frequency) {
|
||
|
switch(timer_num) {
|
||
|
case 0:
|
||
|
LPC_TIM0->MCR = 3; // Match on MR0, reset on MR0
|
||
|
LPC_TIM0->MR0 = (uint32_t)(HAL_STEPPER_TIMER_RATE / frequency); // Match value (period) to set frequency
|
||
|
LPC_TIM0->TCR = (1 << 0); // enable
|
||
|
break;
|
||
|
case 1:
|
||
|
LPC_TIM1->MCR = 3;
|
||
|
LPC_TIM1->MR0 = (uint32_t)(HAL_TEMP_TIMER_RATE / frequency);;
|
||
|
LPC_TIM1->TCR = (1 << 0);
|
||
|
break;
|
||
|
default:
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void HAL_timer_enable_interrupt (uint8_t timer_num) {
|
||
|
switch(timer_num) {
|
||
|
case 0:
|
||
|
NVIC_EnableIRQ(TIMER0_IRQn); // Enable interrupt handler
|
||
|
NVIC_SetPriority(TIMER0_IRQn, NVIC_EncodePriority(0, 1, 0));
|
||
|
break;
|
||
|
case 1:
|
||
|
NVIC_EnableIRQ(TIMER1_IRQn);
|
||
|
NVIC_SetPriority(TIMER1_IRQn, NVIC_EncodePriority(0, 2, 0));
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void HAL_timer_disable_interrupt (uint8_t timer_num) {
|
||
|
switch(timer_num) {
|
||
|
case 0:
|
||
|
NVIC_DisableIRQ(TIMER0_IRQn); // disable interrupt handler
|
||
|
break;
|
||
|
case 1:
|
||
|
NVIC_DisableIRQ(TIMER1_IRQn);
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void HAL_timer_isr_prologue (uint8_t timer_num) {
|
||
|
switch(timer_num) {
|
||
|
case 0:
|
||
|
LPC_TIM0->IR |= 1; //Clear the Interrupt
|
||
|
break;
|
||
|
case 1:
|
||
|
LPC_TIM1->IR |= 1;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
#endif // TARGET_LPC1768
|