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Code Issues Releases Wiki Activity

Fix LPC176x timer functions

Browse Source 
Co-Authored-By: ejtagle <ejtagle@hotmail.com>
This commit is contained in:
Scott Lahteine 2018-05-15 03:32:40 -05:00
parent 59f7861bcb
commit 206014a957
5 changed files with 102 additions and 87 deletions
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17
Marlin/src/HAL/HAL_DUE/HAL_timers_Due.cpp
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@ -126,18 +126,23 @@ void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
}
void HAL_timer_enable_interrupt(const uint8_t timer_num) {
const tTimerConfig * const pConfig = &TimerConfig[timer_num];
pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_IER = TC_IER_CPCS;
IRQn_Type irq = TimerConfig[timer_num].IRQ_Id;
NVIC_EnableIRQ(irq);
}
void HAL_timer_disable_interrupt(const uint8_t timer_num) {
const tTimerConfig * const pConfig = &TimerConfig[timer_num];
pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_IDR = TC_IDR_CPCS;
IRQn_Type irq = TimerConfig[timer_num].IRQ_Id;
NVIC_DisableIRQ(irq);
}
// missing from CMSIS: Check if interrupt is enabled or not
static bool NVIC_GetEnabledIRQ(IRQn_Type IRQn) {
return (NVIC->ISER[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F))) != 0;
}
bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
const tTimerConfig * const pConfig = &TimerConfig[timer_num];
return (pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_IMR & TC_IMR_CPCS) != 0;
IRQn_Type irq = TimerConfig[timer_num].IRQ_Id;
return NVIC_GetEnabledIRQ(irq);
}
#endif // ARDUINO_ARCH_SAM

2
Marlin/src/HAL/HAL_DUE/HAL_timers_Due.h
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@ -118,8 +118,6 @@ void HAL_timer_enable_interrupt(const uint8_t timer_num);
void HAL_timer_disable_interrupt(const uint8_t timer_num);
bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
//void HAL_timer_isr_prologue(const uint8_t timer_num);
FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
const tTimerConfig * const pConfig = &TimerConfig[timer_num];
// Reading the status register clears the interrupt flag

57
Marlin/src/HAL/HAL_LPC1768/HAL_timers.cpp
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@ -23,7 +23,7 @@
/**
* Description:
*
* For TARGET_LPC1768
* Timers for LPC1768
*/
#ifdef TARGET_LPC1768
@ -32,62 +32,35 @@
#include "HAL_timers.h"
void HAL_timer_init(void) {
SBI(LPC_SC->PCONP, 1); // power on timer0
SBI(LPC_SC->PCONP, SBIT_TIMER0); // Power ON Timer 0
LPC_TIM0->PR = (HAL_TIMER_RATE) / (HAL_STEPPER_TIMER_RATE) - 1; // Use prescaler to set frequency if needed
SBI(LPC_SC->PCONP, 2); // power on timer1
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 = 3; // Match on MR0, reset on MR0
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(HAL_STEPPER_TIMER_RATE) / frequency; // Match value (period) to set frequency
LPC_TIM0->TCR = _BV(0); // enable
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 = 3;
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(HAL_TEMP_TIMER_RATE) / frequency;
LPC_TIM1->TCR = _BV(0);
LPC_TIM1->TCR = _BV(SBIT_CNTEN); // Counter Enable
NVIC_SetPriority(TIMER1_IRQn, NVIC_EncodePriority(0, 2, 0));
NVIC_EnableIRQ(TIMER1_IRQn);
break;
default: break;
}
}
void HAL_timer_enable_interrupt(const 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(const uint8_t timer_num) {
switch (timer_num) {
case 0: NVIC_DisableIRQ(TIMER0_IRQn); break; // disable interrupt handler
case 1: NVIC_DisableIRQ(TIMER1_IRQn); break;
}
}
bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
switch (timer_num) {
case 0: return NVIC_GetActive(TIMER0_IRQn);
case 1: return NVIC_GetActive(TIMER1_IRQn);
}
return false;
}
void HAL_timer_isr_prologue(const uint8_t timer_num) {
switch (timer_num) {
case 0: SBI(LPC_TIM0->IR, 0); break; // Clear the Interrupt
case 1: SBI(LPC_TIM1->IR, 0); break;
}
}
#endif // TARGET_LPC1768

109
Marlin/src/HAL/HAL_LPC1768/HAL_timers.h
View File

@ -34,18 +34,42 @@
#include <stdint.h>
#include "../../core/macros.h"
#define SBIT_TIMER0 1
#define SBIT_TIMER1 2
#define SBIT_CNTEN 0
#define SBIT_MR0I 0 // Timer 0 Interrupt when TC matches MR0
#define SBIT_MR0R 1 // Timer 0 Reset TC on Match
#define SBIT_MR0S 2 // Timer 0 Stop TC and PC on Match
#define SBIT_MR1I 3
#define SBIT_MR1R 4
#define SBIT_MR1S 5
#define SBIT_MR2I 6
#define SBIT_MR2R 7
#define SBIT_MR2S 8
#define SBIT_MR3I 9
#define SBIT_MR3R 10
#define SBIT_MR3S 11
// --------------------------------------------------------------------------
// Defines
// --------------------------------------------------------------------------
#define FORCE_INLINE __attribute__((always_inline)) inline
#define _HAL_TIMER(T) _CAT(LPC_TIM, T)
#define _HAL_TIMER_IRQ(T) TIMER##T##_IRQn
#define __HAL_TIMER_ISR(T) extern "C" void TIMER##T##_IRQHandler(void)
#define _HAL_TIMER_ISR(T) __HAL_TIMER_ISR(T)
typedef uint32_t hal_timer_t;
#define HAL_TIMER_TYPE_MAX 0xFFFFFFFF
#define STEP_TIMER_NUM 0 // index of timer to use for stepper
#define TEMP_TIMER_NUM 1 // index of timer to use for temperature
#define STEP_TIMER_NUM 0 // Timer Index for Stepper
#define TEMP_TIMER_NUM 1 // Timer Index for Temperature
#define PULSE_TIMER_NUM STEP_TIMER_NUM
#define PWM_TIMER_NUM 3 // Timer Index for PWM
#define HAL_TIMER_RATE ((SystemCoreClock) / 4) // frequency of timers peripherals
#define HAL_STEPPER_TIMER_RATE HAL_TIMER_RATE // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)
@ -66,21 +90,12 @@ typedef uint32_t hal_timer_t;
#define ENABLE_TEMPERATURE_INTERRUPT() HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
#define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
#define HAL_STEP_TIMER_ISR extern "C" void TIMER0_IRQHandler(void)
#define HAL_TEMP_TIMER_ISR extern "C" void TIMER1_IRQHandler(void)
#define HAL_STEP_TIMER_ISR _HAL_TIMER_ISR(STEP_TIMER_NUM)
#define HAL_TEMP_TIMER_ISR _HAL_TIMER_ISR(TEMP_TIMER_NUM)
// PWM timer
#define HAL_PWM_TIMER LPC_TIM3
#define HAL_PWM_TIMER_ISR extern "C" void TIMER3_IRQHandler(void)
#define HAL_PWM_TIMER_IRQn TIMER3_IRQn
// --------------------------------------------------------------------------
// Types
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// Public Variables
// --------------------------------------------------------------------------
// Timer references by index
#define STEP_TIMER _HAL_TIMER(STEP_TIMER_NUM)
#define TEMP_TIMER _HAL_TIMER(TEMP_TIMER_NUM)
// --------------------------------------------------------------------------
// Public functions
@ -90,31 +105,23 @@ void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency);
FORCE_INLINE static void HAL_timer_set_compare(const uint8_t timer_num, const hal_timer_t compare) {
switch (timer_num) {
case 0:
LPC_TIM0->MR0 = compare;
if (LPC_TIM0->TC > compare)
LPC_TIM0->TC = compare - 5; // generate an immediate stepper ISR
break;
case 1:
LPC_TIM1->MR0 = compare;
if (LPC_TIM1->TC > compare)
LPC_TIM1->TC = compare - 5; // make sure we don't have one extra long period
break;
case 0: STEP_TIMER->MR0 = compare; break; // Stepper Timer Match Register 0
case 1: TEMP_TIMER->MR0 = compare; break; // Temp Timer Match Register 0
}
}
FORCE_INLINE static hal_timer_t HAL_timer_get_compare(const uint8_t timer_num) {
switch (timer_num) {
case 0: return LPC_TIM0->MR0;
case 1: return LPC_TIM1->MR0;
case 0: return STEP_TIMER->MR0; // Stepper Timer Match Register 0
case 1: return TEMP_TIMER->MR0; // Temp Timer Match Register 0
}
return 0;
}
FORCE_INLINE static hal_timer_t HAL_timer_get_count(const uint8_t timer_num) {
switch (timer_num) {
case 0: return LPC_TIM0->TC;
case 1: return LPC_TIM1->TC;
case 0: return STEP_TIMER->TC; // Stepper Timer Count
case 1: return TEMP_TIMER->TC; // Temp Timer Count
}
return 0;
}
@ -124,10 +131,40 @@ FORCE_INLINE static void HAL_timer_restrain(const uint8_t timer_num, const uint1
if (HAL_timer_get_compare(timer_num) < mincmp) HAL_timer_set_compare(timer_num, mincmp);
}
void HAL_timer_enable_interrupt(const uint8_t timer_num);
void HAL_timer_disable_interrupt(const uint8_t timer_num);
bool HAL_timer_interrupt_enabled(const uint8_t timer_num);
void HAL_timer_isr_prologue(const uint8_t timer_num);
FORCE_INLINE static void HAL_timer_enable_interrupt(const uint8_t timer_num) {
switch (timer_num) {
case 0: NVIC_EnableIRQ(TIMER0_IRQn); // Enable interrupt handler
case 1: NVIC_EnableIRQ(TIMER1_IRQn); // Enable interrupt handler
}
}
FORCE_INLINE static void HAL_timer_disable_interrupt(const uint8_t timer_num) {
switch (timer_num) {
case 0: NVIC_DisableIRQ(TIMER0_IRQn); // Disable interrupt handler
case 1: NVIC_DisableIRQ(TIMER1_IRQn); // Disable interrupt handler
}
}
// This function is missing from CMSIS
FORCE_INLINE static bool NVIC_GetEnableIRQ(IRQn_Type IRQn) {
return (NVIC->ISER[((uint32_t)IRQn) >> 5] & (1 << ((uint32_t)IRQn) & 0x1F)) != 0;
}
FORCE_INLINE static bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {
switch (timer_num) {
case 0: return NVIC_GetEnableIRQ(TIMER0_IRQn); // Check if interrupt is enabled or not
case 1: return NVIC_GetEnableIRQ(TIMER1_IRQn); // Check if interrupt is enabled or not
}
return false;
}
FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
switch (timer_num) {
case 0: SBI(STEP_TIMER->IR, SBIT_CNTEN); break;
case 1: SBI(TEMP_TIMER->IR, SBIT_CNTEN); break;
}
}
#define HAL_timer_isr_epilogue(TIMER_NUM)
#endif // _HAL_TIMERS_DUE_H
#endif // _HAL_TIMERS_H

4
Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.cpp
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@ -78,12 +78,14 @@
#define NUM_ISR_PWMS 20
#define HAL_PWM_TIMER LPC_TIM3
#define HAL_PWM_TIMER_ISR extern "C" void TIMER3_IRQHandler(void)
#define HAL_PWM_TIMER_IRQn TIMER3_IRQn
#define LPC_PORT_OFFSET (0x0020)
#define LPC_PIN(pin) (1UL << pin)
#define LPC_GPIO(port) ((volatile LPC_GPIO_TypeDef *)(LPC_GPIO0_BASE + LPC_PORT_OFFSET * port))
typedef struct { // holds all data needed to control/init one of the PWM channels
bool active_flag; // THIS TABLE ENTRY IS ACTIVELY TOGGLING A PIN
pin_t pin;