diff options
Diffstat (limited to 'os/hal/platforms/LPC17xx/gpt_lld.c')
| -rw-r--r-- | os/hal/platforms/LPC17xx/gpt_lld.c | 338 |
1 files changed, 0 insertions, 338 deletions
diff --git a/os/hal/platforms/LPC17xx/gpt_lld.c b/os/hal/platforms/LPC17xx/gpt_lld.c deleted file mode 100644 index 5402154b7..000000000 --- a/os/hal/platforms/LPC17xx/gpt_lld.c +++ /dev/null @@ -1,338 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
-
- 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 LPC17xx/gpt_lld.c
- * @brief LPC17xx GPT subsystem low level driver source.
- *
- * @addtogroup GPT
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_GPT || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/**
- * @brief GPT1 driver identifier.
- * @note The driver GPT1 allocates the complex timer TIM0 when enabled.
- */
-#if LPC17xx_GPT_USE_TIM0 || defined(__DOXYGEN__)
-GPTDriver GPTD1;
-#endif
-
-/**
- * @brief GPT2 driver identifier.
- * @note The driver GPT2 allocates the timer TIM1 when enabled.
- */
-#if LPC17xx_GPT_USE_TIM1 || defined(__DOXYGEN__)
-GPTDriver GPTD2;
-#endif
-
-/**
- * @brief GPT3 driver identifier.
- * @note The driver GPT3 allocates the timer TIM2 when enabled.
- */
-#if LPC17xx_GPT_USE_TIM2 || defined(__DOXYGEN__)
-GPTDriver GPTD3;
-#endif
-
-/**
- * @brief GPT4 driver identifier.
- * @note The driver GPT4 allocates the timer TIM3 when enabled.
- */
-#if LPC17xx_GPT_USE_TIM3 || defined(__DOXYGEN__)
-GPTDriver GPTD4;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/**
- * @brief Shared IRQ handler.
- *
- * @param[in] gptp pointer to a @p GPTDriver object
- */
-static void gpt_lld_serve_interrupt(GPTDriver *gptp) {
-
- gptp->tmr->IR = 1; /* Clear interrupt on match MR0.*/
- if (gptp->state == GPT_ONESHOT) {
- gptp->state = GPT_READY; /* Back in GPT_READY state. */
- gpt_lld_stop_timer(gptp); /* Timer automatically stopped. */
- }
- gptp->config->callback(gptp);
-}
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-#if LPC17xx_GPT_USE_TIM0
-/**
- * @brief TIM0 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector44) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD1);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC17xx_GPT_USE_TIM0 */
-
-#if LPC17xx_GPT_USE_TIM1
-/**
- * @brief TIM1 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector48) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD2);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC17xx_GPT_USE_TIM0 */
-
-#if LPC17xx_GPT_USE_TIM2
-/**
- * @brief TIM2 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector4C) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD3);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC17xx_GPT_USE_TIM2 */
-
-#if LPC17xx_GPT_USE_TIM3
-/**
- * @brief TIM3 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector50) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD4);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC17xx_GPT_USE_TIM3 */
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level GPT driver initialization.
- *
- * @notapi
- */
-void gpt_lld_init(void) {
-
-#if LPC17xx_GPT_USE_TIM0
- /* Driver initialization.*/
- GPTD1.tmr = LPC_TIM0;
- gptObjectInit(&GPTD1);
-#endif
-
-#if LPC17xx_GPT_USE_TIM1
- /* Driver initialization.*/
- GPTD2.tmr = LPC_TIM1;
- gptObjectInit(&GPTD2);
-#endif
-
-#if LPC17xx_GPT_USE_TIM2
- /* Driver initialization.*/
- GPTD3.tmr = LPC_TIM2;
- gptObjectInit(&GPTD3);
-#endif
-
-#if LPC17xx_GPT_USE_TIM3
- /* Driver initialization.*/
- GPTD4.tmr = LPC_TIM3;
- gptObjectInit(&GPTD4);
-#endif
-}
-
-/**
- * @brief Configures and activates the GPT peripheral.
- *
- * @param[in] gptp pointer to the @p GPTDriver object
- *
- * @notapi
- */
-void gpt_lld_start(GPTDriver *gptp) {
- uint32_t pr;
-
- if (gptp->state == GPT_STOP) {
- /* Clock activation.*/
-#if LPC17xx_GPT_USE_TIM0
- if (&GPTD1 == gptp) {
- LPC_SC->PCONP |= (1UL << 1);
- nvicEnableVector(TIMER0_IRQn, CORTEX_PRIORITY_MASK(2));
- }
-#endif
-#if LPC17xx_GPT_USE_TIM1
- if (&GPTD2 == gptp) {
- LPC_SC->PCONP |= (1UL << 2);
- nvicEnableVector(TIMER1_IRQn, CORTEX_PRIORITY_MASK(3));
- }
-#endif
-#if LPC17xx_GPT_USE_TIM2
- if (&GPTD3 == gptp) {
- LPC_SC->PCONP |= (1UL << 22);
- nvicEnableVector(TIMER2_IRQn, CORTEX_PRIORITY_MASK(2));
- }
-#endif
-#if LPC17xx_GPT_USE_TIM3
- if (&GPTD4 == gptp) {
- LPC_SC->PCONP |= (1UL << 23);
- nvicEnableVector(TIMER3_IRQn, CORTEX_PRIORITY_MASK(2));
- }
-#endif
- }
-
- /* Prescaler value calculation.*/
- pr = (uint16_t)((LPC17xx_PCLK/ gptp->config->frequency) - 1);
- chDbgAssert(((uint32_t)(pr + 1) * gptp->config->frequency) == LPC17xx_PCLK,
- "gpt_lld_start(), #1", "invalid frequency");
-
- /* Timer configuration.*/
- gptp->tmr->PR = pr;
- gptp->tmr->IR = 1;
- gptp->tmr->MCR = 0;
- gptp->tmr->TCR = 0;
-}
-
-/**
- * @brief Deactivates the GPT peripheral.
- *
- * @param[in] gptp pointer to the @p GPTDriver object
- *
- * @notapi
- */
-void gpt_lld_stop(GPTDriver *gptp) {
-
- if (gptp->state == GPT_READY) {
- gptp->tmr->MCR = 0;
- gptp->tmr->TCR = 0;
-
-#if LPC17xx_GPT_USE_TIM0
- if (&GPTD1 == gptp) {
- nvicDisableVector(TIMER0_IRQn);
- LPC_SC->PCONP &= ~(1UL << 1);
- }
-#endif
-#if LPC17xx_GPT_USE_TIM1
- if (&GPTD2 == gptp) {
- nvicDisableVector(TIMER1_IRQn);
- LPC_SC->PCONP &= ~(1UL << 2);
- }
-#endif
-#if LPC17xx_GPT_USE_TIM2
- if (&GPTD3 == gptp) {
- nvicDisableVector(TIMER2_IRQn);
- LPC_SC->PCONP &= ~(1UL << 22);
- }
-#endif
-#if LPC17xx_GPT_USE_TIM3
- if (&GPTD4 == gptp) {
- nvicDisableVector(TIMER3_IRQn);
- LPC_SC->PCONP &= ~(1UL << 23);
- }
-#endif
- }
-}
-
-/**
- * @brief Starts the timer in continuous mode.
- *
- * @param[in] gptp pointer to the @p GPTDriver object
- * @param[in] interval period in ticks
- *
- * @notapi
- */
-void gpt_lld_start_timer(GPTDriver *gptp, gptcnt_t interval) {
-
- gptp->tmr->MR0 = interval - 1;
- gptp->tmr->IR = 1;
- gptp->tmr->MCR = 3; /* IRQ and clr TC on match MR0. */
- gptp->tmr->TCR = 2; /* Reset counter and prescaler. */
- gptp->tmr->TCR = 1; /* Timer enabled. */
-}
-
-/**
- * @brief Stops the timer.
- *
- * @param[in] gptp pointer to the @p GPTDriver object
- *
- * @notapi
- */
-void gpt_lld_stop_timer(GPTDriver *gptp) {
-
- gptp->tmr->IR = 1;
- gptp->tmr->MCR = 0;
- gptp->tmr->TCR = 0;
-}
-
-/**
- * @brief Starts the timer in one shot mode and waits for completion.
- * @details This function specifically polls the timer waiting for completion
- * in order to not have extra delays caused by interrupt servicing,
- * this function is only recommended for short delays.
- *
- * @param[in] gptp pointer to the @p GPTDriver object
- * @param[in] interval time interval in ticks
- *
- * @notapi
- */
-void gpt_lld_polled_delay(GPTDriver *gptp, gptcnt_t interval) {
-
- gptp->tmr->MR0 = interval - 1;
- gptp->tmr->IR = 1;
- gptp->tmr->MCR = 4; /* Stop TC on match MR0. */
- gptp->tmr->TCR = 2; /* Reset counter and prescaler. */
- gptp->tmr->TCR = 1; /* Timer enabled. */
- while (gptp->tmr->TCR & 1)
- ;
-}
-
-#endif /* HAL_USE_GPT */
-
-/** @} */
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