diff options
Diffstat (limited to 'os/hal/platforms/LPC11xx/pwm_lld.c')
| -rw-r--r-- | os/hal/platforms/LPC11xx/pwm_lld.c | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/os/hal/platforms/LPC11xx/pwm_lld.c b/os/hal/platforms/LPC11xx/pwm_lld.c deleted file mode 100644 index 06de0bbc6..000000000 --- a/os/hal/platforms/LPC11xx/pwm_lld.c +++ /dev/null @@ -1,407 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
- LPC11xx PWM driver - Copyright (C) 2013 Marcin Jokel
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-/**
- * @file LPC11xx/pwm_lld.c
- * @brief LPC11xx PWM subsystem low level driver header.
- *
- * @addtogroup PWM
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_PWM || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/**
- * @brief PWMD1 driver identifier.
- * @note The driver PWMD1 allocates the complex timer TIM1 when enabled.
- */
-#if LPC11xx_PWM_USE_CT16B0 || defined(__DOXYGEN__)
-PWMDriver PWMD1;
-#endif
-
-/**
- * @brief PWMD2 driver identifier.
- * @note The driver PWMD2 allocates the timer TIM2 when enabled.
- */
-#if LPC11xx_PWM_USE_CT16B1 || defined(__DOXYGEN__)
-PWMDriver PWMD2;
-#endif
-
-/**
- * @brief PWMD3 driver identifier.
- * @note The driver PWMD3 allocates the timer TIM3 when enabled.
- */
-#if LPC11xx_PWM_USE_CT32B0 || defined(__DOXYGEN__)
-PWMDriver PWMD3;
-#endif
-
-/**
- * @brief PWMD4 driver identifier.
- * @note The driver PWMD4 allocates the timer TIM4 when enabled.
- */
-#if LPC11xx_PWM_USE_CT32B1 || defined(__DOXYGEN__)
-PWMDriver PWMD4;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-#if LPC11xx_PWM_USE_CT16B0 || LPC11xx_PWM_USE_CT16B1 || LPC11xx_PWM_USE_CT32B0 || \
- LPC11xx_PWM_USE_CT32B1 || defined(__DOXYGEN__)
-/**
- * @brief Common TIM2...TIM5 IRQ handler.
- * @note It is assumed that the various sources are only activated if the
- * associated callback pointer is not equal to @p NULL in order to not
- * perform an extra check in a potentially critical interrupt handler.
- *
- * @param[in] pwmp pointer to a @p PWMDriver object
- */
-static void pwm_lld_serve_interrupt(PWMDriver *pwmp) {
- uint16_t sr;
-
- sr = pwmp->tim->IR;
- pwmp->tim->IR = sr;
- if ((sr & IR_MR0INT) != 0)
- pwmp->config->channels[0].callback(pwmp);
- if ((sr & IR_MR1INT) != 0)
- pwmp->config->channels[1].callback(pwmp);
- if ((sr & IR_MR3INT) != 0)
- pwmp->config->callback(pwmp);
-}
-#endif /* STM32_PWM_USE_TIM2 || ... || STM32_PWM_USE_TIM5 */
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-#if LPC11xx_PWM_USE_CT16B0 || defined(__DOXYGEN__)
-/**
- * @brief CT16B0 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector80) {
-
- CH_IRQ_PROLOGUE();
-
- pwm_lld_serve_interrupt(&PWMD1);
-
- CH_IRQ_EPILOGUE();
-}
-
-#endif /* STM32_PWM_USE_TIM1 */
-
-#if LPC11xx_PWM_USE_CT16B1 || defined(__DOXYGEN__)
-/**
- * @brief CT16B1 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector84) {
-
- CH_IRQ_PROLOGUE();
-
- pwm_lld_serve_interrupt(&PWMD2);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC11xx_PWM_USE_CT16B1 */
-
-#if LPC11xx_PWM_USE_CT32B0 || defined(__DOXYGEN__)
-/**
- * @brief CT32B0 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector88) {
-
- CH_IRQ_PROLOGUE();
-
- pwm_lld_serve_interrupt(&PWMD3);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC11xx_PWM_USE_CT32B0 */
-
-#if LPC11xx_PWM_USE_CT32B1 || defined(__DOXYGEN__)
-/**
- * @brief CT32B1 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector8C) {
-
- CH_IRQ_PROLOGUE();
-
- pwm_lld_serve_interrupt(&PWMD4);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC11xx_PWM_USE_CT32B1 */
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level PWM driver initialization.
- *
- * @notapi
- */
-void pwm_lld_init(void) {
-
-#if LPC11xx_PWM_USE_CT16B0
- /* Driver initialization.*/
- pwmObjectInit(&PWMD1);
- PWMD1.tim = LPC_TMR16B0;
-
-#if LPC11xx_PWM_USE_CT16B0_CH0
- LPC_IOCON->PIO0_8 = 0xC2;
-#endif
-
-#if LPC11xx_PWM_USE_CT16B0_CH1
- LPC_IOCON->PIO0_9 = 0xC2;
-#endif
-#endif
-
-#if LPC11xx_PWM_USE_CT16B1
- /* Driver initialization.*/
- pwmObjectInit(&PWMD2);
- PWMD2.tim = LPC_TMR16B1;
-
-#if LPC11xx_PWM_USE_CT16B1_CH0
- LPC_IOCON->PIO1_9 = 0xC1;
-#endif
-
-#if LPC11xx_PWM_USE_CT16B1_CH1
- LPC_IOCON->PIO1_10 = 0xC2;
-#endif
-#endif
-
-#if LPC11xx_PWM_USE_CT32B0
- /* Driver initialization.*/
- pwmObjectInit(&PWMD3);
- PWMD3.tim = LPC_TMR32B0;
-
-#if LPC11xx_PWM_USE_CT32B0_CH0
- LPC_IOCON->PIO1_6 = 0xC2;
-#endif
-
-#if LPC11xx_PWM_USE_CT32B0_CH1
- LPC_IOCON->PIO1_7 = 0xC2;
-#endif
-#endif
-
-#if LPC11xx_PWM_USE_CT32B1
- /* Driver initialization.*/
- pwmObjectInit(&PWMD4);
- PWMD4.tim = LPC_TMR32B1;
-
-#if LPC11xx_PWM_USE_CT32B1_CH0
- LPC_IOCON->R_PIO1_1 = 0xC3;
-#endif
-
-#if LPC11xx_PWM_USE_CT32B1_CH1
- LPC_IOCON->R_PIO1_2 = 0xC3;
-#endif
-#endif
-}
-
-/**
- * @brief Configures and activates the PWM peripheral.
- * @note Starting a driver that is already in the @p PWM_READY state
- * disables all the active channels.
- *
- * @param[in] pwmp pointer to a @p PWMDriver object
- *
- * @notapi
- */
-void pwm_lld_start(PWMDriver *pwmp) {
- uint32_t pr;
-
- if (pwmp->state == PWM_STOP) {
- /* Clock activation and timer reset.*/
-#if LPC11xx_PWM_USE_CT16B0
- if (&PWMD1 == pwmp) {
- LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 7);
- nvicEnableVector(TIMER_16_0_IRQn, LPC11xx_PWM_CT16B0_IRQ_PRIORITY);
- }
-#endif
-#if LPC11xx_PWM_USE_CT16B1
- if (&PWMD2 == pwmp) {
- LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 8);
- nvicEnableVector(TIMER_16_1_IRQn, LPC11xx_PWM_CT16B1_IRQ_PRIORITY);
- }
-#endif
-#if LPC11xx_PWM_USE_CT32B0
- if (&PWMD3 == pwmp) {
- LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 9);
- nvicEnableVector(TIMER_32_0_IRQn, LPC11xx_PWM_CT32B0_IRQ_PRIORITY);
- }
-#endif
-#if LPC11xx_PWM_USE_CT32B1
- if (&PWMD4 == pwmp) {
- LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 10);
- nvicEnableVector(TIMER_32_1_IRQn, LPC11xx_PWM_CT32B1_IRQ_PRIORITY);
- }
-#endif
- }
- else {
- /* Driver re-configuration scenario, it must be stopped first.*/
- pwmp->tim->TCR = 0;
- }
-
- /* Output enables and polarities setup.*/
- if(pwmp->config->channels[0].mode == PWM_OUTPUT_ACTIVE_LOW)
- pwmp->tim->PWMC = (1 << 0);
-
- if(pwmp->config->channels[1].mode == PWM_OUTPUT_ACTIVE_LOW)
- pwmp->tim->PWMC |= (1 << 1);
-
- /* Timer configured and started.*/
- pr = (uint16_t)((LPC11xx_SYSCLK / pwmp->config->frequency) - 1);
- chDbgAssert(((uint32_t)(pr + 1) * pwmp->config->frequency) == LPC11xx_SYSCLK,
- "pwm_lld_start(), #1", "invalid frequency");
-
- pwmp->tim->TC = 0;
- pwmp->tim->PR = pr;
- pwmp->tim->IR = 0xFF;
- pwmp->tim->MCR = MCR_MR3R; /* Reset on Match3 */
- pwmp->tim->MR3 = pwmp->config->period;
-
- if (pwmp->config->callback != NULL)
- pwmp->tim->MCR |= MCR_MR3I;
-
- pwmp->tim->TCR = 1; /* Timer start */
-}
-
-/**
- * @brief Deactivates the PWM peripheral.
- *
- * @param[in] pwmp pointer to a @p PWMDriver object
- *
- * @notapi
- */
-void pwm_lld_stop(PWMDriver *pwmp) {
-
- /* If in ready state then disables the PWM clock.*/
- if (pwmp->state == PWM_READY) {
- pwmp->tim->TCR = 0; /* Timer disabled. */
- pwmp->tim->MCR = 0; /* All IRQs disabled. */
- pwmp->tim->IR = 0xFF; /* Clear eventual pending IRQs. */
- pwmp->tim->PWMC = 0; /* PWM outputs disable. */
-
-#if LPC11xx_PWM_USE_CT16B0
- if (&PWMD1 == pwmp) {
- nvicDisableVector(TIMER_16_0_IRQn);
- LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 7);
- }
-#endif
-#if LPC11xx_PWM_USE_CT16B1
- if (&PWMD2 == pwmp) {
- nvicDisableVector(TIMER_16_1_IRQn);
- LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 8);
- }
-#endif
-#if LPC11xx_PWM_USE_CT32B0
- if (&PWMD3 == pwmp) {
- nvicDisableVector(TIMER_32_0_IRQn);
- LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 9);
- }
-#endif
-#if LPC11xx_PWM_USE_CT32B1
- if (&PWMD4 == pwmp) {
- nvicDisableVector(TIMER_32_1_IRQn);
- LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 10);
- }
-#endif
-
- }
-}
-
-/**
- * @brief Enables a PWM channel.
- * @pre The PWM unit must have been activated using @p pwmStart().
- * @post The channel is active using the specified configuration.
- * @note The function has effect at the next cycle start.
- *
- * @param[in] pwmp pointer to a @p PWMDriver object
- * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1)
- * @param[in] width PWM pulse width as clock pulses number
- *
- * @notapi
- */
-void pwm_lld_enable_channel(PWMDriver *pwmp,
- pwmchannel_t channel,
- pwmcnt_t width) {
-
- pwmp->tim->MCR &= ~(7 << (channel * 3));
-
- if ( channel == 0)
- pwmp->tim->MR0 = width; /* New duty cycle. */
- else
- pwmp->tim->MR1 = width; /* New duty cycle. */
- /* If there is a callback defined for the channel then the associated
- interrupt must be enabled.*/
- if (pwmp->config->channels[channel].callback != NULL) {
- pwmp->tim->IR = (1 << channel); /* Clear interrupt flag*/
- pwmp->tim->MCR |= (1 << (channel * 3)); /* Set interrupt on selected channel */
- }
-
-}
-
-/**
- * @brief Disables a PWM channel.
- * @pre The PWM unit must have been activated using @p pwmStart().
- * @post The channel is disabled and its output line returned to the
- * idle state.
- * @note The function has effect at the next cycle start.
- *
- * @param[in] pwmp pointer to a @p PWMDriver object
- * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1)
- *
- * @notapi
- */
-void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel) {
-
- if ( channel == 0)
- pwmp->tim->MR0 = 0;
- else
- pwmp->tim->MR1 = 0;
- pwmp->tim->MCR &= ~(7 << (channel * 3));
- pwmp->tim->IR = (1 << channel);
-}
-
-#endif /* HAL_USE_PWM */
-
-/** @} */
|