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-rw-r--r--os/hal/platforms/LPC43xx/gpt_lld.c676
1 files changed, 338 insertions, 338 deletions
diff --git a/os/hal/platforms/LPC43xx/gpt_lld.c b/os/hal/platforms/LPC43xx/gpt_lld.c
index 85c84650c..e9789e871 100644
--- a/os/hal/platforms/LPC43xx/gpt_lld.c
+++ b/os/hal/platforms/LPC43xx/gpt_lld.c
@@ -1,338 +1,338 @@
-/*
- 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 LPC43xx/gpt_lld.c
- * @brief LPC43xx 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 LPC_GPT_USE_TIM0 || defined(__DOXYGEN__)
-GPTDriver GPTD1;
-#endif
-
-/**
- * @brief GPT2 driver identifier.
- * @note The driver GPT2 allocates the timer TIM1 when enabled.
- */
-#if LPC_GPT_USE_TIM1 || defined(__DOXYGEN__)
-GPTDriver GPTD2;
-#endif
-
-/**
- * @brief GPT3 driver identifier.
- * @note The driver GPT3 allocates the timer TIM2 when enabled.
- */
-#if LPC_GPT_USE_TIM2 || defined(__DOXYGEN__)
-GPTDriver GPTD3;
-#endif
-
-/**
- * @brief GPT4 driver identifier.
- * @note The driver GPT4 allocates the timer TIM3 when enabled.
- */
-#if LPC_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 LPC_GPT_USE_TIM0
-/**
- * @brief TIM0 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector70) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD1);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC_GPT_USE_TIM0 */
-
-#if LPC_GPT_USE_TIM1
-/**
- * @brief TIM1 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector74) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD2);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC_GPT_USE_TIM0 */
-
-#if LPC_GPT_USE_TIM2
-/**
- * @brief TIM2 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector78) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD3);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC_GPT_USE_TIM2 */
-
-#if LPC_GPT_USE_TIM3
-/**
- * @brief TIM3 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(Vector7C) {
-
- CH_IRQ_PROLOGUE();
-
- gpt_lld_serve_interrupt(&GPTD4);
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* LPC_GPT_USE_TIM3 */
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level GPT driver initialization.
- *
- * @notapi
- */
-void gpt_lld_init(void) {
-
-#if LPC_GPT_USE_TIM0
- /* Driver initialization.*/
- GPTD1.tmr = LPC_TIMER0;
- gptObjectInit(&GPTD1);
-#endif
-
-#if LPC_GPT_USE_TIM1
- /* Driver initialization.*/
- GPTD2.tmr = LPC_TIMER1;
- gptObjectInit(&GPTD2);
-#endif
-
-#if LPC_GPT_USE_TIM2
- /* Driver initialization.*/
- GPTD3.tmr = LPC_TIMER2;
- gptObjectInit(&GPTD3);
-#endif
-
-#if LPC_GPT_USE_TIM3
- /* Driver initialization.*/
- GPTD4.tmr = LPC_TIMER3;
- 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 LPC_GPT_USE_TIM0
- if (&GPTD1 == gptp) {
- LPC_CCU1->CLK_M4_TIMER0_CFG = 1;
- nvicEnableVector(TIMER0_IRQn, CORTEX_PRIORITY_MASK(2));
- }
-#endif
-#if LPC_GPT_USE_TIM1
- if (&GPTD2 == gptp) {
- LPC_CCU1->CLK_M4_TIMER1_CFG = 1;
- nvicEnableVector(TIMER1_IRQn, CORTEX_PRIORITY_MASK(3));
- }
-#endif
-#if LPC_GPT_USE_TIM2
- if (&GPTD3 == gptp) {
- LPC_CCU1->CLK_M4_TIMER2_CFG = 1;
- nvicEnableVector(TIMER2_IRQn, CORTEX_PRIORITY_MASK(2));
- }
-#endif
-#if LPC_GPT_USE_TIM3
- if (&GPTD4 == gptp) {
- LPC_CCU1->CLK_M4_TIMER3_CFG = 1;
- nvicEnableVector(TIMER3_IRQn, CORTEX_PRIORITY_MASK(2));
- }
-#endif
- }
-
- /* Prescaler value calculation.*/
- pr = (uint16_t)((LPC_BASE_M4_CLK/ gptp->config->frequency) - 1);
- chDbgAssert(((uint32_t)(pr + 1) * gptp->config->frequency) == LPC_BASE_M4_CLK,
- "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 LPC_GPT_USE_TIM0
- if (&GPTD1 == gptp) {
- nvicDisableVector(TIMER0_IRQn);
- LPC_CCU1->CLK_M4_TIMER0_CFG = 0;
- }
-#endif
-#if LPC_GPT_USE_TIM1
- if (&GPTD2 == gptp) {
- nvicDisableVector(TIMER1_IRQn);
- LPC_CCU1->CLK_M4_TIMER1_CFG = 0;
- }
-#endif
-#if LPC_GPT_USE_TIM2
- if (&GPTD3 == gptp) {
- nvicDisableVector(TIMER2_IRQn);
- LPC_CCU1->CLK_M4_TIMER2_CFG = 0;
- }
-#endif
-#if LPC_GPT_USE_TIM3
- if (&GPTD4 == gptp) {
- nvicDisableVector(TIMER3_IRQn);
- LPC_CCU1->CLK_M4_TIMER3_CFG = 0;
- }
-#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->MR[0] = 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->MR[0] = 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 */
-
-/** @} */
+/*
+ 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 LPC43xx/gpt_lld.c
+ * @brief LPC43xx 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 LPC_GPT_USE_TIM0 || defined(__DOXYGEN__)
+GPTDriver GPTD1;
+#endif
+
+/**
+ * @brief GPT2 driver identifier.
+ * @note The driver GPT2 allocates the timer TIM1 when enabled.
+ */
+#if LPC_GPT_USE_TIM1 || defined(__DOXYGEN__)
+GPTDriver GPTD2;
+#endif
+
+/**
+ * @brief GPT3 driver identifier.
+ * @note The driver GPT3 allocates the timer TIM2 when enabled.
+ */
+#if LPC_GPT_USE_TIM2 || defined(__DOXYGEN__)
+GPTDriver GPTD3;
+#endif
+
+/**
+ * @brief GPT4 driver identifier.
+ * @note The driver GPT4 allocates the timer TIM3 when enabled.
+ */
+#if LPC_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 LPC_GPT_USE_TIM0
+/**
+ * @brief TIM0 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector70) {
+
+ CH_IRQ_PROLOGUE();
+
+ gpt_lld_serve_interrupt(&GPTD1);
+
+ CH_IRQ_EPILOGUE();
+}
+#endif /* LPC_GPT_USE_TIM0 */
+
+#if LPC_GPT_USE_TIM1
+/**
+ * @brief TIM1 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector74) {
+
+ CH_IRQ_PROLOGUE();
+
+ gpt_lld_serve_interrupt(&GPTD2);
+
+ CH_IRQ_EPILOGUE();
+}
+#endif /* LPC_GPT_USE_TIM0 */
+
+#if LPC_GPT_USE_TIM2
+/**
+ * @brief TIM2 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector78) {
+
+ CH_IRQ_PROLOGUE();
+
+ gpt_lld_serve_interrupt(&GPTD3);
+
+ CH_IRQ_EPILOGUE();
+}
+#endif /* LPC_GPT_USE_TIM2 */
+
+#if LPC_GPT_USE_TIM3
+/**
+ * @brief TIM3 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector7C) {
+
+ CH_IRQ_PROLOGUE();
+
+ gpt_lld_serve_interrupt(&GPTD4);
+
+ CH_IRQ_EPILOGUE();
+}
+#endif /* LPC_GPT_USE_TIM3 */
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level GPT driver initialization.
+ *
+ * @notapi
+ */
+void gpt_lld_init(void) {
+
+#if LPC_GPT_USE_TIM0
+ /* Driver initialization.*/
+ GPTD1.tmr = LPC_TIMER0;
+ gptObjectInit(&GPTD1);
+#endif
+
+#if LPC_GPT_USE_TIM1
+ /* Driver initialization.*/
+ GPTD2.tmr = LPC_TIMER1;
+ gptObjectInit(&GPTD2);
+#endif
+
+#if LPC_GPT_USE_TIM2
+ /* Driver initialization.*/
+ GPTD3.tmr = LPC_TIMER2;
+ gptObjectInit(&GPTD3);
+#endif
+
+#if LPC_GPT_USE_TIM3
+ /* Driver initialization.*/
+ GPTD4.tmr = LPC_TIMER3;
+ 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 LPC_GPT_USE_TIM0
+ if (&GPTD1 == gptp) {
+ LPC_CCU1->CLK_M4_TIMER0_CFG = 1;
+ nvicEnableVector(TIMER0_IRQn, CORTEX_PRIORITY_MASK(2));
+ }
+#endif
+#if LPC_GPT_USE_TIM1
+ if (&GPTD2 == gptp) {
+ LPC_CCU1->CLK_M4_TIMER1_CFG = 1;
+ nvicEnableVector(TIMER1_IRQn, CORTEX_PRIORITY_MASK(3));
+ }
+#endif
+#if LPC_GPT_USE_TIM2
+ if (&GPTD3 == gptp) {
+ LPC_CCU1->CLK_M4_TIMER2_CFG = 1;
+ nvicEnableVector(TIMER2_IRQn, CORTEX_PRIORITY_MASK(2));
+ }
+#endif
+#if LPC_GPT_USE_TIM3
+ if (&GPTD4 == gptp) {
+ LPC_CCU1->CLK_M4_TIMER3_CFG = 1;
+ nvicEnableVector(TIMER3_IRQn, CORTEX_PRIORITY_MASK(2));
+ }
+#endif
+ }
+
+ /* Prescaler value calculation.*/
+ pr = (uint16_t)((LPC_BASE_M4_CLK/ gptp->config->frequency) - 1);
+ chDbgAssert(((uint32_t)(pr + 1) * gptp->config->frequency) == LPC_BASE_M4_CLK,
+ "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 LPC_GPT_USE_TIM0
+ if (&GPTD1 == gptp) {
+ nvicDisableVector(TIMER0_IRQn);
+ LPC_CCU1->CLK_M4_TIMER0_CFG = 0;
+ }
+#endif
+#if LPC_GPT_USE_TIM1
+ if (&GPTD2 == gptp) {
+ nvicDisableVector(TIMER1_IRQn);
+ LPC_CCU1->CLK_M4_TIMER1_CFG = 0;
+ }
+#endif
+#if LPC_GPT_USE_TIM2
+ if (&GPTD3 == gptp) {
+ nvicDisableVector(TIMER2_IRQn);
+ LPC_CCU1->CLK_M4_TIMER2_CFG = 0;
+ }
+#endif
+#if LPC_GPT_USE_TIM3
+ if (&GPTD4 == gptp) {
+ nvicDisableVector(TIMER3_IRQn);
+ LPC_CCU1->CLK_M4_TIMER3_CFG = 0;
+ }
+#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->MR[0] = 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->MR[0] = 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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