Adding AVR family subdirecories.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@10326 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 0 insertions, 373 deletions

diff --git a/os/hal/ports/AVR/hal_gpt_lld.c b/os/hal/ports/AVR/hal_gpt_lld.c
deleted file mode 100644
index 6ccc7cadd..000000000
--- a/os/hal/ports/AVR/hal_gpt_lld.c
+++ /dev/null
@@ -1,373 +0,0 @@
-/*

-    ChibiOS - Copyright (C) 2006..2016 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.

-*/

-

-/*

-   This driver is based on the work done by Matteo Serva available at

-   http://github.com/matteoserva/ChibiOS-AVR

-*/

-

-/**

- * @file    hal_gpt_lld.c

- * @brief   AVR GPT driver subsystem low level driver.

- *

- * @addtogroup GPT

- * @{

- */

-

-#include "hal.h"

-

-#if HAL_USE_GPT || defined(__DOXYGEN__)

-

-/*===========================================================================*/

-/* Driver local definitions.                                                 */

-/*===========================================================================*/

-

-#define PRESCALER_SIZE_BASE       5

-#define PRESCALER_SIZE_EXTENDED   7

-

-// FIXME: could use better names here!

-typedef struct {

-  volatile uint8_t *tccra;

-  volatile uint8_t *tccrb;

-  volatile uint8_t *ocr1;

-  volatile uint8_t *ocr2;

-  volatile uint8_t *tcnt1;

-  volatile uint8_t *tcnt2;

-  volatile uint8_t *tifr;

-  volatile uint8_t *timsk;

-} timer_registers_t;

-

-const timer_registers_t regs_table[] = {

-#if AVR_GPT_USE_TIM1 || defined(__DOXYGEN__)

-  { &TCCR1A, &TCCR1B, &OCR1AH, &OCR1AL, &TCNT1H, &TCNT1L, &TIFR1, &TIMSK1 },

-#endif

-#if AVR_GPT_USE_TIM2 || defined(__DOXYGEN__)

-  { &TCCR2A, &TCCR2B, &OCR2A, &OCR2A, &TCNT2, &TCNT2, &TIFR2, &TIMSK2 },

-#endif

-#if AVR_GPT_USE_TIM3 || defined(__DOXYGEN__)

-  { &TCCR3A, &TCCR3B, &OCR3AH, &OCR3AL, &TCNT3H, &TCNT3L, &TIFR3, &TIMSK3 },

-#endif

-#if AVR_GPT_USE_TIM4 || defined(__DOXYGEN__)

-  { &TCCR4A, &TCCR4B, &OCR4AH, &OCR4AL, &TCNT4H, &TCNT4L, &TIFR4, &TIMSK4 },

-#endif

-#if AVR_GPT_USE_TIM5 || defined(__DOXYGEN__)

-  { &TCCR5A, &TCCR5B, &OCR5AH, &OCR5AL, &TCNT5H, &TCNT5L, &TIFR5, &TIMSK5 },

-#endif

-};

-

-/*===========================================================================*/

-/* Driver exported variables.                                                */

-/*===========================================================================*/

-

-#if AVR_GPT_USE_TIM1 || defined(__DOXYGEN__)

-GPTDriver GPTD1;

-#endif

-#if AVR_GPT_USE_TIM2 || defined(__DOXYGEN__)

-GPTDriver GPTD2;

-#endif

-#if AVR_GPT_USE_TIM3 || defined(__DOXYGEN__)

-GPTDriver GPTD3;

-#endif

-#if AVR_GPT_USE_TIM4 || defined(__DOXYGEN__)

-GPTDriver GPTD4;

-#endif

-#if AVR_GPT_USE_TIM5 || defined(__DOXYGEN__)

-GPTDriver GPTD5;

-#endif

-

-/*===========================================================================*/

-/* Driver local variables.                                                   */

-/*===========================================================================*/

-

-static uint16_t ratio_base[] = { 1024, 256, 64, 8, 1 };

-static uint8_t  clock_source_base[]= { 5, 4, 3, 2, 1 };

-//static uint16_t ratio_extended[] = { 1024, 256, 128, 64, 32, 8, 1 };

-//static uint8_t  clock_source_extended[] = { 7, 6, 5, 4, 3, 2, 1 };

-

-/*===========================================================================*/

-/* Driver local functions.                                                   */

-/*===========================================================================*/

-

-static uint8_t prescaler(uint16_t freq, uint16_t *ratio, uint8_t n) {

-  uint8_t i;

-

-  for (i = 0; i < n; ++i) {

-    uint32_t result = F_CPU / ratio[i] / freq;

-    if (result > 256UL)

-       return i - 1;

-    if ((result * ratio[i] * freq) == F_CPU)

-      return i;

-  }

-  return -1; // TO check

-}

-

-static void gpt_lld_serve_interrupt(GPTDriver *gptp) {

-  gptp->counter++;

-  if (gptp->counter == gptp->period) {

-    gptp->counter = 0;

-    if (gptp->state == GPT_ONESHOT) {

-      gptp->state = GPT_READY;             /* Back in GPT_READY state.     */

-      gpt_lld_stop_timer(gptp);            /* Timer automatically stopped. */

-    }

-    gptp->callback(gptp);

-  }

-}

-

-static void gpt_lld_dummy_callback(GPTDriver *gptp) {

-}

-

-static uint8_t getTimerIndex(GPTDriver *gptp) {

-  uint8_t index = 0;

-#if AVR_GPT_USE_TIM1 || defined(__DOXYGEN__)

-  if (gptp == &GPTD1) return index;

-  else index++;

-#endif

-#if AVR_GPT_USE_TIM2 || defined(__DOXYGEN__)

-  if (gptp == &GPTD2) return index;

-  else index++;

-#endif

-#if AVR_GPT_USE_TIM3 || defined(__DOXYGEN__)

-  if (gptp == &GPTD3) return index;

-  else index++;

-#endif

-#if AVR_GPT_USE_TIM4 || defined(__DOXYGEN__)

-  if (gptp == &GPTD4) return index;

-  else index++;

-#endif

-#if AVR_GPT_USE_TIM5 || defined(__DOXYGEN__)

-  if (gptp == &GPTD5) return index;

-  else index++;

-#endif

-  return -1; // To check

-}

-

-/*===========================================================================*/

-/* Driver interrupt handlers.                                                */

-/*===========================================================================*/

-

-#if AVR_GPT_USE_TIM1 || defined(__DOXYGEN__)

-/**

- * @brief   TIM1 interrupt handler.

- *

- * @isr

- */

-OSAL_IRQ_HANDLER(TIMER1_COMPA_vect) {

-

-  OSAL_IRQ_PROLOGUE();

-  gpt_lld_serve_interrupt(&GPTD1);

-  OSAL_IRQ_EPILOGUE();

-}

-#endif

-

-#if AVR_GPT_USE_TIM2 || defined(__DOXYGEN__)

-/**

- * @brief   TIM2 interrupt handler.

- *

- * @isr

- */

-OSAL_IRQ_HANDLER(TIMER2_COMPA_vect) {

-

-  OSAL_IRQ_PROLOGUE();

-  gpt_lld_serve_interrupt(&GPTD2);

-  OSAL_IRQ_EPILOGUE();

-}

-#endif

-

-#if AVR_GPT_USE_TIM3 || defined(__DOXYGEN__)

-/**

- * @brief   TIM3 interrupt handler.

- *

- * @isr

- */

-OSAL_IRQ_HANDLER(TIMER3_COMPA_vect) {

-

-  OSAL_IRQ_PROLOGUE();

-  gpt_lld_serve_interrupt(&GPTD3);

-  OSAL_IRQ_EPILOGUE();

-}

-#endif

-

-#if AVR_GPT_USE_TIM4 || defined(__DOXYGEN__)

-/**

- * @brief   TIM4 interrupt handler.

- *

- * @isr

- */

-OSAL_IRQ_HANDLER(TIMER4_COMPA_vect) {

-

-  OSAL_IRQ_PROLOGUE();

-  gpt_lld_serve_interrupt(&GPTD4);

-  OSAL_IRQ_EPILOGUE();

-}

-#endif

-

-#if AVR_GPT_USE_TIM5 || defined(__DOXYGEN__)

-/**

- * @brief   TIM2 interrupt handler.

- *

- * @isr

- */

-OSAL_IRQ_HANDLER(TIMER5_COMPA_vect) {

-

-  OSAL_IRQ_PROLOGUE();

-  gpt_lld_serve_interrupt(&GPTD5);

-  OSAL_IRQ_EPILOGUE();

-}

-#endif

-

-/*===========================================================================*/

-/* Driver exported functions.                                                */

-/*===========================================================================*/

-

-/**

- * @brief   Low level GPT driver initialization.

- *

- * @notapi

- */

-void gpt_lld_init(void) {

-

-#if AVR_GPT_USE_TIM1 || defined(__DOXYGEN__)

-  gptObjectInit(&GPTD1);

-#endif

-#if AVR_GPT_USE_TIM2 || defined(__DOXYGEN__)

-  gptObjectInit(&GPTD2);

-#endif

-#if AVR_GPT_USE_TIM3 || defined(__DOXYGEN__)

-  gptObjectInit(&GPTD3);

-#endif

-#if AVR_GPT_USE_TIM4 || defined(__DOXYGEN__)

-  gptObjectInit(&GPTD4);

-#endif

-#if AVR_GPT_USE_TIM5 || defined(__DOXYGEN__)

-  gptObjectInit(&GPTD5);

-#endif

-}

-

-/**

- * @brief   Configures and activates the GPT peripheral.

- *

- * @param[in] gptp    pointer to the @p GPTDriver object

- *

- * @notapi

- */

-void gpt_lld_start(GPTDriver *gptp) {

-  uint8_t psc;

-

-  if (gptp->state == GPT_STOP) {

-    /* Clock activation.*/

-  }

-

-  /* Configuration.*/

-

-#if AVR_GPT_USE_TIM2 || defined(__DOXYGEN__)

-  if (gptp == &GPTD2) {

-    psc = prescaler(gptp->config->frequency, ratio_extended, PRESCALER_SIZE_EXTENDED);

-    gptp->clock_source = clock_source_extended[psc] & 0x07;

-    TCCR2A  = (1 << WGM21) | (0 << WGM20);

-    TCCR2B  = (0 << WGM22);

-    OCR2A = F_CPU / ratio_extended[psc] /gptp->config->frequency - 1;

-    return;

-  }

-#endif

-

-  uint8_t i = getTimerIndex(gptp);

-  psc = prescaler(gptp->config->frequency, ratio_base, PRESCALER_SIZE_BASE);

-  gptp->clock_source = clock_source_base[psc] & 0x07;

-  *regs_table[i].tccra = (0 << WGM11)  |

-                         (0 << WGM10)  |

-                         (0 << COM1A1) |

-                         (0 << COM1A0) |

-                         (0 << COM1B1) |

-                         (0 << COM1B0);

-  *regs_table[i].tccrb = (1 << WGM12);

-  *regs_table[i].ocr1 = 0;

-  *regs_table[i].ocr2 = F_CPU / ratio_base[psc] / gptp->config->frequency - 1;

-}

-

-/**

- * @brief   Deactivates the GPT peripheral.

- *

- * @param[in] gptp    pointer to the @p GPTDriver object

- *

- * @notapi

- */

-void gpt_lld_stop(GPTDriver *gptp) {

-

-  /* nothing to be done */

-  if (gptp->state == GPT_READY) {

-    /* Clock de-activation.*/

-  }

-  gpt_lld_stop_timer(gptp);

-}

-

-/**

- * @brief   Starts the timer in continuous mode.

- *

- * @param[in] gptp      pointer to the @p GPTDriver object

- * @param[in] period    period in ticks

- *

- * @notapi

- */

-void gpt_lld_start_timer(GPTDriver *gptp, gptcnt_t period) {

-

-  gptp->callback = gptp->config->callback;

-  gptp->period = period;

-  gptp->counter = 0;

-

-  uint8_t i = getTimerIndex(gptp);

-  *regs_table[i].tcnt1 = 0;

-  *regs_table[i].tcnt2 = 0;

-  *regs_table[i].tifr  = (1 << OCF1A);

-  *regs_table[i].timsk = (1 << OCIE1A);

-  *regs_table[i].tccrb |= (gptp->clock_source << CS10);

-}

-

-/**

- * @brief   Stops the timer.

- *

- * @param[in] gptp    pointer to the @p GPTDriver object

- *

- * @notapi

- */

-void gpt_lld_stop_timer(GPTDriver *gptp) {

-  uint8_t i = getTimerIndex(gptp);

-

-  *regs_table[i].tccrb &= ~((7 << CS10) | (1 << OCIE1A));

-  *regs_table[i].tifr = (1 << OCF1A);

-}

-

-/**

- * @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->callback = gpt_lld_dummy_callback;

-  gpt_lld_start_timer(gptp, interval);

-  //FIX

-  while (gptp->state != GPT_READY) {}

-}

-

-#endif /* HAL_USE_GPT */

-

-/** @} */