diff options
Diffstat (limited to 'os/hal/ports/TIVA/LLD/GPTM')
| -rw-r--r-- | os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c | 756 | ||||
| -rw-r--r-- | os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.h | 501 | ||||
| -rw-r--r-- | os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c | 255 | ||||
| -rw-r--r-- | os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h | 270 |
4 files changed, 1782 insertions, 0 deletions
diff --git a/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c b/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c new file mode 100644 index 0000000..60d2b82 --- /dev/null +++ b/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c @@ -0,0 +1,756 @@ +/* + Copyright (C) 2014..2016 Marco Veeneman + + 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 TIVA/gpt_lld.c + * @brief TM4C123x/TM4C129x GPT subsystem low level driver source. + * + * @addtogroup GPT + * @{ + */ + +#include "hal.h" + +#if HAL_USE_GPT || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/** + * @brief GPTD1 driver identifier. + */ +#if TIVA_GPT_USE_GPT0 || defined(__DOXYGEN__) +GPTDriver GPTD1; +#endif + +/** + * @brief GPTD2 driver identifier. + */ +#if TIVA_GPT_USE_GPT1 || defined(__DOXYGEN__) +GPTDriver GPTD2; +#endif + +/** + * @brief GPTD3 driver identifier. + */ +#if TIVA_GPT_USE_GPT2 || defined(__DOXYGEN__) +GPTDriver GPTD3; +#endif + +/** + * @brief GPTD4 driver identifier. + */ +#if TIVA_GPT_USE_GPT3 || defined(__DOXYGEN__) +GPTDriver GPTD4; +#endif + +/** + * @brief GPTD5 driver identifier. + */ +#if TIVA_GPT_USE_GPT4 || defined(__DOXYGEN__) +GPTDriver GPTD5; +#endif + +/** + * @brief GPTD6 driver identifier. + */ +#if TIVA_GPT_USE_GPT5 || defined(__DOXYGEN__) +GPTDriver GPTD6; +#endif + +/** + * @brief GPTD7 driver identifier. + */ +#if TIVA_GPT_USE_WGPT0 || defined(__DOXYGEN__) +GPTDriver GPTD7; +#endif + +/** + * @brief GPTD8 driver identifier. + */ +#if TIVA_GPT_USE_WGPT1 || defined(__DOXYGEN__) +GPTDriver GPTD8; +#endif + +/** + * @brief GPTD9 driver identifier. + */ +#if TIVA_GPT_USE_WGPT2 || defined(__DOXYGEN__) +GPTDriver GPTD9; +#endif + +/** + * @brief GPTD10 driver identifier. + */ +#if TIVA_GPT_USE_WGPT3 || defined(__DOXYGEN__) +GPTDriver GPTD10; +#endif + +/** + * @brief GPTD11 driver identifier. + */ +#if TIVA_GPT_USE_WGPT4 || defined(__DOXYGEN__) +GPTDriver GPTD11; +#endif + +/** + * @brief GPTD12 driver identifier. + */ +#if TIVA_GPT_USE_WGPT5 || defined(__DOXYGEN__) +GPTDriver GPTD12; +#endif + +/*===========================================================================*/ +/* Driver local variables and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/** + * @brief Shared IRQ handler. + * + * @param[in] gptp pointer to @p GPTDriver object + */ +static void gpt_lld_serve_interrupt(GPTDriver *gptp) +{ + HWREG(gptp->gpt + TIMER_O_ICR) = 0xffffffff; + + if (gptp->state == GPT_ONESHOT) { + gptp->state = GPT_READY; + gpt_lld_stop_timer(gptp); + } + + gptp->config->callback(gptp); +} + +/*===========================================================================*/ +/* Driver interrupt handlers. */ +/*===========================================================================*/ + +#if TIVA_GPT_USE_GPT0 +#if !defined(TIVA_GPT0A_HANDLER) +#error "TIVA_GPT0A_HANDLER not defined" +#endif +/** + * @brief GPT0 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_GPT0A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD1); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_GPT1 +#if !defined(TIVA_GPT1A_HANDLER) +#error "TIVA_GPT1A_HANDLER not defined" +#endif +/** + * @brief GPT1 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_GPT1A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD2); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_GPT2 +#if !defined(TIVA_GPT2A_HANDLER) +#error "TIVA_GPT2A_HANDLER not defined" +#endif +/** + * @brief GPT2 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_GPT2A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD3); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_GPT3 +#if !defined(TIVA_GPT3A_HANDLER) +#error "TIVA_GPT3A_HANDLER not defined" +#endif +/** + * @brief GPT3 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_GPT3A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD4); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_GPT4 +#if !defined(TIVA_GPT4A_HANDLER) +#error "TIVA_GPT4A_HANDLER not defined" +#endif +/** + * @brief GPT4 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_GPT4A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD5); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_GPT5 +#if !defined(TIVA_GPT5A_HANDLER) +#error "TIVA_GPT5A_HANDLER not defined" +#endif +/** + * @brief GPT5 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_GPT5A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD6); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_WGPT0 +#if !defined(TIVA_WGPT0A_HANDLER) +#error "TIVA_WGPT0A_HANDLER not defined" +#endif +/** + * @brief WGPT0 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_WGPT0A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD7); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_WGPT1 +#if !defined(TIVA_WGPT1A_HANDLER) +#error "TIVA_WGPT1A_HANDLER not defined" +#endif +/** + * @brief WGPT1 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_WGPT1A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD8); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_WGPT2 +#if !defined(TIVA_WGPT2A_HANDLER) +#error "TIVA_WGPT2A_HANDLER not defined" +#endif +/** + * @brief WGPT2 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_WGPT2A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD9); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_WGPT3 +#if !defined(TIVA_WGPT3A_HANDLER) +#error "TIVA_WGPT3A_HANDLER not defined" +#endif +/** + * @brief WGPT3 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_WGPT3A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD10); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_WGPT4 +#if !defined(TIVA_WGPT4A_HANDLER) +#error "TIVA_WGPT4A_HANDLER not defined" +#endif +/** + * @brief WGPT4 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_WGPT4A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD11); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +#if TIVA_GPT_USE_WGPT5 +#if !defined(TIVA_WGPT5A_HANDLER) +#error "TIVA_WGPT5A_HANDLER not defined" +#endif +/** + * @brief WGPT5 interrupt handler. + * + * @isr + */ +OSAL_IRQ_HANDLER(TIVA_WGPT5A_HANDLER) +{ + OSAL_IRQ_PROLOGUE(); + + gpt_lld_serve_interrupt(&GPTD12); + + OSAL_IRQ_EPILOGUE(); +} +#endif + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief Low level GPT driver initialization. + * + * @notapi + */ +void gpt_lld_init(void) +{ + /* Driver initialization.*/ +#if TIVA_GPT_USE_GPT0 + GPTD1.gpt = TIMER0_BASE; + gptObjectInit(&GPTD1); +#endif + +#if TIVA_GPT_USE_GPT1 + GPTD2.gpt = TIMER1_BASE; + gptObjectInit(&GPTD2); +#endif + +#if TIVA_GPT_USE_GPT2 + GPTD3.gpt = TIMER2_BASE; + gptObjectInit(&GPTD3); +#endif + +#if TIVA_GPT_USE_GPT3 + GPTD4.gpt = TIMER3_BASE; + gptObjectInit(&GPTD4); +#endif + +#if TIVA_GPT_USE_GPT4 + GPTD5.gpt = TIMER4_BASE; + gptObjectInit(&GPTD5); +#endif + +#if TIVA_GPT_USE_GPT5 + GPTD6.gpt = TIMER5_BASE; + gptObjectInit(&GPTD6); +#endif + +#if TIVA_GPT_USE_WGPT0 + GPTD7.gpt = WTIMER0_BASE; + gptObjectInit(&GPTD7); +#endif + +#if TIVA_GPT_USE_WGPT1 + GPTD8.gpt = WTIMER1_BASE; + gptObjectInit(&GPTD8); +#endif + +#if TIVA_GPT_USE_WGPT2 + GPTD9.gpt = WTIMER2_BASE; + gptObjectInit(&GPTD9); +#endif + +#if TIVA_GPT_USE_WGPT3 + GPTD10.gpt = WTIMER3_BASE; + gptObjectInit(&GPTD10); +#endif + +#if TIVA_GPT_USE_WGPT4 + GPTD11.gpt = WTIMER4_BASE; + gptObjectInit(&GPTD11); +#endif + +#if TIVA_GPT_USE_WGPT5 + GPTD12.gpt = WTIMER5_BASE; + gptObjectInit(&GPTD12); +#endif +} + +/** + * @brief Configures and activates the GPT peripheral. + * + * @param[in] gptp pointer to the @p GPTDriver object + * + * @notapi + */ +void gpt_lld_start(GPTDriver *gptp) +{ + if (gptp->state == GPT_STOP) { + /* Clock activation.*/ +#if TIVA_GPT_USE_GPT0 + if (&GPTD1 == gptp) { + HWREG(SYSCTL_RCGCTIMER) |= (1 << 0); + + while (!(HWREG(SYSCTL_PRTIMER) & (1 << 0))) + ; + + nvicEnableVector(TIVA_GPT0A_NUMBER, TIVA_GPT_GPT0A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_GPT1 + if (&GPTD2 == gptp) { + HWREG(SYSCTL_RCGCTIMER) |= (1 << 1); + + while (!(HWREG(SYSCTL_PRTIMER) & (1 << 1))) + ; + + nvicEnableVector(TIVA_GPT1A_NUMBER, TIVA_GPT_GPT1A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_GPT2 + if (&GPTD3 == gptp) { + HWREG(SYSCTL_RCGCTIMER) |= (1 << 2); + + while (!(HWREG(SYSCTL_PRTIMER) & (1 << 2))) + ; + + nvicEnableVector(TIVA_GPT2A_NUMBER, TIVA_GPT_GPT2A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_GPT3 + if (&GPTD4 == gptp) { + HWREG(SYSCTL_RCGCTIMER) |= (1 << 3); + + while (!(HWREG(SYSCTL_PRTIMER) & (1 << 3))) + ; + + nvicEnableVector(TIVA_GPT3A_NUMBER, TIVA_GPT_GPT3A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_GPT4 + if (&GPTD5 == gptp) { + HWREG(SYSCTL_RCGCTIMER) |= (1 << 4); + + while (!(HWREG(SYSCTL_PRTIMER) & (1 << 4))) + ; + + nvicEnableVector(TIVA_GPT4A_NUMBER, TIVA_GPT_GPT4A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_GPT5 + if (&GPTD6 == gptp) { + HWREG(SYSCTL_RCGCTIMER) |= (1 << 5); + + while (!(HWREG(SYSCTL_PRTIMER) & (1 << 5))) + ; + + nvicEnableVector(TIVA_GPT5A_NUMBER, TIVA_GPT_GPT5A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_WGPT0 + if (&GPTD7 == gptp) { + HWREG(SYSCTL_RCGCWTIMER) |= (1 << 0); + + while (!(HWREG(SYSCTL_PRWTIMER) & (1 << 0))) + ; + + nvicEnableVector(TIVA_WGPT0A_NUMBER, TIVA_GPT_WGPT0A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_WGPT1 + if (&GPTD8 == gptp) { + HWREG(SYSCTL_RCGCWTIMER) |= (1 << 1); + + while (!(HWREG(SYSCTL_PRWTIMER) & (1 << 1))) + ; + + nvicEnableVector(TIVA_WGPT1A_NUMBER, TIVA_GPT_WGPT1A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_WGPT2 + if (&GPTD9 == gptp) { + HWREG(SYSCTL_RCGCWTIMER) |= (1 << 2); + + while (!(HWREG(SYSCTL_PRWTIMER) & (1 << 2))) + ; + + nvicEnableVector(TIVA_WGPT2A_NUMBER, TIVA_GPT_WGPT2A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_WGPT3 + if (&GPTD10 == gptp) { + HWREG(SYSCTL_RCGCWTIMER) |= (1 << 3); + + while (!(HWREG(SYSCTL_PRWTIMER) & (1 << 3))) + ; + + nvicEnableVector(TIVA_WGPT3A_NUMBER, TIVA_GPT_WGPT3A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_WGPT4 + if (&GPTD11 == gptp) { + HWREG(SYSCTL_RCGCWTIMER) |= (1 << 4); + + while (!(HWREG(SYSCTL_PRWTIMER) & (1 << 4))) + ; + + nvicEnableVector(TIVA_WGPT4A_NUMBER, TIVA_GPT_WGPT4A_IRQ_PRIORITY); + } +#endif + +#if TIVA_GPT_USE_WGPT5 + if (&GPTD12 == gptp) { + HWREG(SYSCTL_RCGCWTIMER) |= (1 << 5); + + while (!(HWREG(SYSCTL_PRWTIMER) & (1 << 5))) + ; + + nvicEnableVector(TIVA_WGPT5A_NUMBER, TIVA_GPT_WGPT5A_IRQ_PRIORITY); + } +#endif + } + + /* Timer configuration.*/ + HWREG(gptp->gpt + TIMER_O_CTL) = 0; + HWREG(gptp->gpt + TIMER_O_CFG) = TIMER_CFG_16_BIT; + HWREG(gptp->gpt + TIMER_O_TAPR) = ((TIVA_SYSCLK / 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) +{ + if (gptp->state == GPT_READY) { + HWREG(gptp->gpt + TIMER_O_IMR) = 0; + HWREG(gptp->gpt + TIMER_O_TAILR) = 0; + HWREG(gptp->gpt + TIMER_O_CTL) = 0; + +#if TIVA_GPT_USE_GPT0 + if (&GPTD1 == gptp) { + nvicDisableVector(TIVA_GPT0A_NUMBER); + HWREG(SYSCTL_RCGCTIMER) &= ~(1 << 0); + } +#endif + +#if TIVA_GPT_USE_GPT1 + if (&GPTD2 == gptp) { + nvicDisableVector(TIVA_GPT1A_NUMBER); + HWREG(SYSCTL_RCGCTIMER) &= ~(1 << 1); + } +#endif + +#if TIVA_GPT_USE_GPT2 + if (&GPTD3 == gptp) { + nvicDisableVector(TIVA_GPT2A_NUMBER); + HWREG(SYSCTL_RCGCTIMER) &= ~(1 << 2); + } +#endif + +#if TIVA_GPT_USE_GPT3 + if (&GPTD4 == gptp) { + nvicDisableVector(TIVA_GPT3A_NUMBER); + HWREG(SYSCTL_RCGCTIMER) &= ~(1 << 3); + } +#endif + +#if TIVA_GPT_USE_GPT4 + if (&GPTD5 == gptp) { + nvicDisableVector(TIVA_GPT4A_NUMBER); + HWREG(SYSCTL_RCGCTIMER) &= ~(1 << 4); + } +#endif + +#if TIVA_GPT_USE_GPT5 + if (&GPTD6 == gptp) { + nvicDisableVector(TIVA_GPT5A_NUMBER); + HWREG(SYSCTL_RCGCTIMER) &= ~(1 << 5); + } +#endif + +#if TIVA_GPT_USE_WGPT0 + if (&GPTD7 == gptp) { + nvicDisableVector(TIVA_WGPT0A_NUMBER); + HWREG(SYSCTL_RCGCWTIMER) &= ~(1 << 0); + } +#endif + +#if TIVA_GPT_USE_WGPT1 + if (&GPTD8 == gptp) { + nvicDisableVector(TIVA_WGPT1A_NUMBER); + HWREG(SYSCTL_RCGCWTIMER) &= ~(1 << 1); + } +#endif + +#if TIVA_GPT_USE_WGPT2 + if (&GPTD9 == gptp) { + nvicDisableVector(TIVA_WGPT2A_NUMBER); + HWREG(SYSCTL_RCGCWTIMER) &= ~(1 << 2); + } +#endif + +#if TIVA_GPT_USE_WGPT3 + if (&GPTD10 == gptp) { + nvicDisableVector(TIVA_WGPT3A_NUMBER); + HWREG(SYSCTL_RCGCWTIMER) &= ~(1 << 3); + } +#endif + +#if TIVA_GPT_USE_WGPT4 + if (&GPTD11 == gptp) { + nvicDisableVector(TIVA_WGPT4A_NUMBER); + HWREG(SYSCTL_RCGCWTIMER) &= ~(1 << 4); + } +#endif + +#if TIVA_GPT_USE_WGPT5 + if (&GPTD12 == gptp) { + nvicDisableVector(TIVA_WGPT5A_NUMBER); + HWREG(SYSCTL_RCGCWTIMER) &= ~(1 << 5); + } +#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) +{ + HWREG(gptp->gpt + TIMER_O_TAILR) = interval - 1; + HWREG(gptp->gpt + TIMER_O_ICR) = 0xfffffff; + HWREG(gptp->gpt + TIMER_O_IMR) = TIMER_IMR_TATOIM; + HWREG(gptp->gpt + TIMER_O_TAMR) = TIMER_TAMR_TAMR_PERIOD | TIMER_TAMR_TAILD | TIMER_TAMR_TASNAPS; + HWREG(gptp->gpt + TIMER_O_CTL) = TIMER_CTL_TAEN | TIMER_CTL_TASTALL; +} + +/** + * @brief Stops the timer. + * + * @param[in] gptp pointer to the @p GPTDriver object + * + * @notapi + */ +void gpt_lld_stop_timer(GPTDriver *gptp) +{ + HWREG(gptp->gpt + TIMER_O_IMR) = 0; + HWREG(gptp->gpt + TIMER_O_TAILR) = 0; + HWREG(gptp->gpt + TIMER_O_CTL) &= ~TIMER_CTL_TAEN; +} + +/** + * @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) +{ + HWREG(gptp->gpt + TIMER_O_TAMR) = TIMER_TAMR_TAMR_1_SHOT | TIMER_TAMR_TAILD | TIMER_TAMR_TASNAPS; + HWREG(gptp->gpt + TIMER_O_TAILR) = interval - 1; + HWREG(gptp->gpt + TIMER_O_ICR) = 0xffffffff; + HWREG(gptp->gpt + TIMER_O_CTL) = TIMER_CTL_TAEN | TIMER_CTL_TASTALL; + while (!(HWREG(gptp->gpt + TIMER_O_RIS) & TIMER_IMR_TATOIM)) + ; + HWREG(gptp->gpt + TIMER_O_ICR) = 0xffffffff; +} + +#endif /* HAL_USE_GPT */ + +/** @} */ diff --git a/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.h b/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.h new file mode 100644 index 0000000..88a6809 --- /dev/null +++ b/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.h @@ -0,0 +1,501 @@ +/* + Copyright (C) 2014..2016 Marco Veeneman + + 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 TIVA/gpt_lld.h + * @brief TM4C123x/TM4C129x GPT subsystem low level driver header. + * + * @addtogroup GPT + * @{ + */ + +#ifndef HAL_GPT_LLD_H +#define HAL_GPT_LLD_H + +#if HAL_USE_GPT || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/** + * @name Configuration options + * @{ + */ + +/** + * @brief GPTD1 driver enable switch. + * @details If set to @p TRUE the support for GPTD1 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_GPT0) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_GPT0 FALSE +#endif + +/** + * @brief GPTD2 driver enable switch. + * @details If set to @p TRUE the support for GPTD2 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_GPT1) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_GPT1 FALSE +#endif + +/** + * @brief GPTD3 driver enable switch. + * @details If set to @p TRUE the support for GPTD3 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_GPT2) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_GPT2 FALSE +#endif + +/** + * @brief GPTD4 driver enable switch. + * @details If set to @p TRUE the support for GPTD4 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_GPT3) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_GPT3 FALSE +#endif + +/** + * @brief GPTD5 driver enable switch. + * @details If set to @p TRUE the support for GPTD5 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_GPT4) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_GPT4 FALSE +#endif + +/** + * @brief GPTD6 driver enable switch. + * @details If set to @p TRUE the support for GPTD6 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_GPT5) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_GPT5 FALSE +#endif + +/** + * @brief GPTD7 driver enable switch. + * @details If set to @p TRUE the support for GPTD1 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_WGPT0) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_WGPT0 FALSE +#endif + +/** + * @brief GPTD8 driver enable switch. + * @details If set to @p TRUE the support for GPTD2 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_WGPT1) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_WGPT1 FALSE +#endif + +/** + * @brief GPTD9 driver enable switch. + * @details If set to @p TRUE the support for GPTD3 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_WGPT2) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_WGPT2 FALSE +#endif + +/** + * @brief GPTD10 driver enable switch. + * @details If set to @p TRUE the support for GPTD4 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_WGPT3) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_WGPT3 FALSE +#endif + +/** + * @brief GPTD11 driver enable switch. + * @details If set to @p TRUE the support for GPTD5 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_WGPT4) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_WGPT4 FALSE +#endif + +/** + * @brief GPTD12 driver enable switch. + * @details If set to @p TRUE the support for GPTD6 is included. + * @note The default is @p FALSE. + */ +#if !defined(TIVA_GPT_USE_WGPT5) || defined(__DOXYGEN__) +#define TIVA_GPT_USE_WGPT5 FALSE +#endif + +/** + * @brief GPTD1 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_GPT0A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_GPT0A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD2 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_GPT1A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_GPT1A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD3 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_GPT2A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_GPT2A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD4 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_GPT3A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_GPT3A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD5 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_GPT4A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_GPT4A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD6 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_GPT5A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_GPT5A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD7 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_WGPT0A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_WGPT0A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD8 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_WGPT1A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_WGPT1A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD9 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_WGPT2A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_WGPT2A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD10 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_WGPT3A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_WGPT3A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD11 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_WGPT4A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_WGPT4A_IRQ_PRIORITY 7 +#endif + +/** + * @brief GPTD12 interrupt priority level setting. + */ +#if !defined(TIVA_GPT_WGPT5A_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_GPT_WGPT5A_IRQ_PRIORITY 7 +#endif + +/** @} */ + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +#if TIVA_GPT_USE_GPT0 && !TIVA_HAS_GPT0 +#error "GPT0 not present in the selected device" +#endif + +#if TIVA_GPT_USE_GPT1 && !TIVA_HAS_GPT1 +#error "GPT1 not present in the selected device" +#endif + +#if TIVA_GPT_USE_GPT2 && !TIVA_HAS_GPT2 +#error "GPT2 not present in the selected device" +#endif + +#if TIVA_GPT_USE_GPT3 && !TIVA_HAS_GPT3 +#error "GPT3 not present in the selected device" +#endif + +#if TIVA_GPT_USE_GPT4 && !TIVA_HAS_GPT4 +#error "GPT4 not present in the selected device" +#endif + +#if TIVA_GPT_USE_GPT5 && !TIVA_HAS_GPT5 +#error "GPT5 not present in the selected device" +#endif + +#if TIVA_GPT_USE_WGPT0 && !TIVA_HAS_WGPT0 +#error "WGPT0 not present in the selected device" +#endif + +#if TIVA_GPT_USE_WGPT1 && !TIVA_HAS_WGPT1 +#error "WGPT1 not present in the selected device" +#endif + +#if TIVA_GPT_USE_WGPT2 && !TIVA_HAS_WGPT2 +#error "WGPT2 not present in the selected device" +#endif + +#if TIVA_GPT_USE_WGPT3 && !TIVA_HAS_WGPT3 +#error "WGPT3 not present in the selected device" +#endif + +#if TIVA_GPT_USE_WGPT4 && !TIVA_HAS_WGPT4 +#error "WGPT4 not present in the selected device" +#endif + +#if TIVA_GPT_USE_WGPT5 && !TIVA_HAS_WGPT5 +#error "WGPT5 not present in the selected device" +#endif + +#if !TIVA_GPT_USE_GPT0 && !TIVA_GPT_USE_GPT1 && !TIVA_GPT_USE_GPT2 && \ + !TIVA_GPT_USE_GPT3 && !TIVA_GPT_USE_GPT4 && !TIVA_GPT_USE_GPT5 && \ + !TIVA_GPT_USE_WGPT0 && !TIVA_GPT_USE_WGPT1 && !TIVA_GPT_USE_WGPT2 && \ + !TIVA_GPT_USE_WGPT3 && !TIVA_GPT_USE_WGPT4 && !TIVA_GPT_USE_WGPT5 +#error "GPT driver activated but no (W)GPT peripheral assigned" +#endif + +#if TIVA_GPT_USE_GPT0 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_GPT0A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to GPT0" +#endif + +#if TIVA_GPT_USE_GPT1 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_GPT1A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to GPT1" +#endif + +#if TIVA_GPT_USE_GPT2 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_GPT2A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to GPT2" +#endif + +#if TIVA_GPT_USE_GPT3 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_GPT3A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to GPT3" +#endif + +#if TIVA_GPT_USE_GPT4 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_GPT4A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to GPT4" +#endif + +#if TIVA_GPT_USE_GPT5 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_GPT5A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to GPT5" +#endif + +#if TIVA_GPT_USE_WGPT0 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_WGPT0A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to WGPT0" +#endif + +#if TIVA_GPT_USE_WGPT1 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_WGPT1A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to WGPT1" +#endif + +#if TIVA_GPT_USE_WGPT2 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_WGPT2A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to WGPT2" +#endif + +#if TIVA_GPT_USE_WGPT3 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_WGPT3A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to WGPT3" +#endif + +#if TIVA_GPT_USE_WGPT4 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_WGPT4A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to WGPT4" +#endif + +#if TIVA_GPT_USE_WGPT5 && \ + !OSAL_IRQ_IS_VALID_PRIORITY(TIVA_GPT_WGPT5A_IRQ_PRIORITY) +#error "Invalid IRQ priority assigned to WGPT5" +#endif + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + +/** + * @brief GPT frequency type. + */ +typedef uint32_t gptfreq_t; + +/** + * @brief GPT counter type. + */ +typedef uint16_t gptcnt_t; + +/** + * @brief Driver configuration structure. + * @note It could be empty on some architectures. + */ +typedef struct { + /** + * @brief Timer clock in Hz. + * @note The low level can use assertions in order to catch invalid + * frequency specifications. + */ + gptfreq_t frequency; + /** + * @brief Timer callback pointer. + * @note This callback is invoked on GPT counter events. + */ + gptcallback_t callback; + /* End of the mandatory fields.*/ +} GPTConfig; + +/** + * @brief Structure representing a GPT driver. + */ +struct GPTDriver { + /** + * @brief Driver state. + */ + gptstate_t state; + /** + * @brief Current configuration data. + */ + const GPTConfig *config; +#if defined(GPT_DRIVER_EXT_FIELDS) + GPT_DRIVER_EXT_FIELDS +#endif + /* End of the mandatory fields.*/ + /** + * @brief Pointer to the GPT registers block. + */ + uint32_t gpt; +}; + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +/** + * @brief Changes the interval of GPT peripheral. + * @details This function changes the interval of a running GPT unit. + * @pre The GPT unit must have been activated using @p gptStart(). + * @pre The GPT unit must have been running in continuous mode using + * @p gptStartContinuous(). + * @post The GPT unit interval is changed to the new value. + * @note The function has effect at the next cycle start. + * + * @param[in] gptp pointer to a @p GPTDriver object + * @param[in] interval new cycle time in timer ticks + * @notapi + */ +#define gpt_lld_change_interval(gptp, interval) { \ + HWREG(gptp->gpt + TIMER_O_TAILR) = interval - 1; \ +} + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#if TIVA_GPT_USE_GPT0 && !defined(__DOXYGEN__) +extern GPTDriver GPTD1; +#endif + +#if TIVA_GPT_USE_GPT1 && !defined(__DOXYGEN__) +extern GPTDriver GPTD2; +#endif + +#if TIVA_GPT_USE_GPT2 && !defined(__DOXYGEN__) +extern GPTDriver GPTD3; +#endif + +#if TIVA_GPT_USE_GPT3 && !defined(__DOXYGEN__) +extern GPTDriver GPTD4; +#endif + +#if TIVA_GPT_USE_GPT4 && !defined(__DOXYGEN__) +extern GPTDriver GPTD5; +#endif + +#if TIVA_GPT_USE_GPT5 && !defined(__DOXYGEN__) +extern GPTDriver GPTD6; +#endif + +#if TIVA_GPT_USE_WGPT0 && !defined(__DOXYGEN__) +extern GPTDriver GPTD7; +#endif + +#if TIVA_GPT_USE_WGPT1 && !defined(__DOXYGEN__) +extern GPTDriver GPTD8; +#endif + +#if TIVA_GPT_USE_WGPT2 && !defined(__DOXYGEN__) +extern GPTDriver GPTD9; +#endif + +#if TIVA_GPT_USE_WGPT3 && !defined(__DOXYGEN__) +extern GPTDriver GPTD10; +#endif + +#if TIVA_GPT_USE_WGPT4 && !defined(__DOXYGEN__) +extern GPTDriver GPTD11; +#endif + +#if TIVA_GPT_USE_WGPT5 && !defined(__DOXYGEN__) +extern GPTDriver GPTD12; +#endif + +#ifdef __cplusplus +extern "C" { +#endif + void gpt_lld_init(void); + void gpt_lld_start(GPTDriver *gptp); + void gpt_lld_stop(GPTDriver *gptp); + void gpt_lld_start_timer(GPTDriver *gptp, gptcnt_t period); + void gpt_lld_stop_timer(GPTDriver *gptp); + void gpt_lld_polled_delay(GPTDriver *gptp, gptcnt_t interval); +#ifdef __cplusplus +} +#endif + +#endif /* HAL_USE_GPT */ + +#endif /* HAL_GPT_LLD_H */ + +/** @} */ diff --git a/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c new file mode 100644 index 0000000..d87652b --- /dev/null +++ b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.c @@ -0,0 +1,255 @@ +/* + Copyright (C) 2014..2016 Marco Veeneman + + 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 Tiva/LLD/st_lld.c + * @brief ST Driver subsystem low level driver code. + * + * @addtogroup ST + * @{ + */ + +#include "hal.h" + +#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE) || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +#if OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING + +#if (TIVA_ST_USE_WIDE_TIMER == TRUE) + +#if TIVA_ST_TIMER_NUMBER == 0 +#define ST_HANDLER TIVA_WGPT0A_HANDLER +#define ST_NUMBER TIVA_WGPT0A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCWTIMER |= (1 << 0)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRWTIMER & (1 << 0))) + +#elif TIVA_ST_TIMER_NUMBER == 1 +#define ST_HANDLER TIVA_WGPT1A_HANDLER +#define ST_NUMBER TIVA_WGPT1A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCWTIMER |= (1 << 1)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRWTIMER & (1 << 1))) + +#elif TIVA_ST_TIMER_NUMBER == 2 +#define ST_HANDLER TIVA_WGPT2A_HANDLER +#define ST_NUMBER TIVA_WGPT2A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCWTIMER |= (1 << 2)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRWTIMER & (1 << 2))) + +#elif TIVA_ST_TIMER_NUMBER == 3 +#define ST_HANDLER TIVA_WGPT3A_HANDLER +#define ST_NUMBER TIVA_WGPT3A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCWTIMER |= (1 << 3)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRWTIMER & (1 << 3))) + +#elif TIVA_ST_TIMER_NUMBER == 4 +#define ST_HANDLER TIVA_WGPT4A_HANDLER +#define ST_NUMBER TIVA_WGPT4A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCWTIMER |= (1 << 4)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRWTIMER & (1 << 4))) + +#elif TIVA_ST_TIMER_NUMBER == 5 +#define ST_HANDLER TIVA_WGPT5A_HANDLER +#define ST_NUMBER TIVA_WGPT5A_NUMBER +#define ST_ENABLE_CLOCK() (HWREG(SYSCTL_RCGCWTIMER) |= (1 << 5)) +#define ST_WAIT_CLOCK() while (!(HWREG(SYSCTL_PRWTIMER) & (1 << 5))) + +#else +#error "TIVA_ST_USE_TIMER specifies an unsupported timer" +#endif + +#if (ST_CLOCK_SRC / OSAL_ST_FREQUENCY) - 1 > 0xFFFF +#error "the selected ST frequency is not obtainable because TIM timer prescaler limits" +#endif + +#elif (TIVA_ST_USE_WIDE_TIMER == FALSE) + +#if TIVA_ST_TIMER_NUMBER == 0 +#define ST_HANDLER TIVA_GPT0A_HANDLER +#define ST_NUMBER TIVA_GPT0A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCTIMER |= (1 << 0)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRTIMER & (1 << 0))) + +#elif TIVA_ST_TIMER_NUMBER == 1 +#define ST_HANDLER TIVA_GPT1A_HANDLER +#define ST_NUMBER TIVA_GPT1A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCTIMER |= (1 << 1)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRTIMER & (1 << 1))) + +#elif TIVA_ST_TIMER_NUMBER == 2 +#define ST_HANDLER TIVA_GPT2A_HANDLER +#define ST_NUMBER TIVA_GPT2A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCTIMER |= (1 << 2)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRTIMER & (1 << 2))) + +#elif TIVA_ST_TIMER_NUMBER == 3 +#define ST_HANDLER TIVA_GPT3A_HANDLER +#define ST_NUMBER TIVA_GPT3A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCTIMER |= (1 << 3)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRTIMER & (1 << 3))) + +#elif TIVA_ST_TIMER_NUMBER == 4 +#define ST_HANDLER TIVA_GPT4A_HANDLER +#define ST_NUMBER TIVA_GPT4A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCTIMER |= (1 << 4)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRTIMER & (1 << 4))) + +#elif TIVA_ST_TIMER_NUMBER == 5 +#define ST_HANDLER TIVA_GPT5A_HANDLER +#define ST_NUMBER TIVA_GPT5A_NUMBER +#define ST_ENABLE_CLOCK() (SYSCTL->RCGCTIMER |= (1 << 5)) +#define ST_WAIT_CLOCK() while (!(SYSCTL->PRTIMER & (1 << 5))) + +#else +#error "TIVA_ST_USE_TIMER specifies an unsupported timer" +#endif + +#if (TIVA_SYSCLK / OSAL_ST_FREQUENCY) - 1 > 0xFF +#error "the selected ST frequency is not obtainable because TIM timer prescaler limits" +#endif + +#endif + +#if TIVA_SYSCLK % OSAL_ST_FREQUENCY != 0 +#error "the selected ST frequency is not obtainable because integer rounding" +#endif + +#endif + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local variables and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver interrupt handlers. */ +/*===========================================================================*/ + +#if (OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC) || defined(__DOXYGEN__) +/** + * @brief System Timer vector. + * @details This interrupt is used for system tick in periodic mode. + * + * @isr + */ +OSAL_IRQ_HANDLER(SysTick_Handler) +{ + OSAL_IRQ_PROLOGUE(); + + osalSysLockFromISR(); + osalOsTimerHandlerI(); + osalSysUnlockFromISR(); + + OSAL_IRQ_EPILOGUE(); +} +#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */ + +#if (OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING) || defined(__DOXYGEN__) +/** + * @brief GPT interrupt handler. + * @details This interrupt is used for system tick in free running mode. + * + * @isr + */ +OSAL_IRQ_HANDLER(ST_HANDLER) +{ + uint32_t mis; + + OSAL_IRQ_PROLOGUE(); + + mis = HWREG(TIVA_ST_TIM + TIMER_O_MIS); + HWREG(TIVA_ST_TIM + TIMER_O_ICR) = mis; + + if (mis & TIMER_IMR_TAMIM) { + osalSysLockFromISR(); + osalOsTimerHandlerI(); + osalSysUnlockFromISR(); + } + + OSAL_IRQ_EPILOGUE(); +} +#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */ + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief Low level ST driver initialization. + * + * @notapi + */ +void st_lld_init(void) +{ +#if OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING + /* Free running counter mode.*/ + + /* Enabling timer clock.*/ + ST_ENABLE_CLOCK(); + + /* Wait until timer peripheral is ready */ + ST_WAIT_CLOCK(); + + /* Initializing the counter in free running down mode.*/ + HWREG(TIVA_ST_TIM + TIMER_O_CTL) = 0; + HWREG(TIVA_ST_TIM + TIMER_O_CFG) = TIMER_CFG_16_BIT; /* Timer split mode */ + HWREG(TIVA_ST_TIM + TIMER_O_TAMR) = ( + TIMER_TAMR_TAMR_PERIOD | /* Periodic mode */ + TIMER_TAMR_TAMIE | /* Match interrupt enable */ + TIMER_TAMR_TASNAPS); /* Snapshot mode */ + + HWREG(TIVA_ST_TIM + TIMER_O_TAPR) = (TIVA_SYSCLK / OSAL_ST_FREQUENCY) - 1; + HWREG(TIVA_ST_TIM + TIMER_O_CTL) = ( + TIMER_CTL_TAEN | /* Timer A enable */ + TIMER_CTL_TASTALL); /* Timer A stall when paused */ + + /* IRQ enabled.*/ + nvicEnableVector(ST_NUMBER, TIVA_ST_IRQ_PRIORITY); +#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */ + +#if OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC + /* Periodic systick mode, the Cortex-Mx internal systick timer is used + in this mode.*/ + SysTick->LOAD = (TIVA_SYSCLK / OSAL_ST_FREQUENCY) - 1; + SysTick->VAL = 0; + SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk | + SysTick_CTRL_ENABLE_Msk | + SysTick_CTRL_TICKINT_Msk; + + /* IRQ enabled.*/ + nvicSetSystemHandlerPriority(HANDLER_SYSTICK, TIVA_ST_IRQ_PRIORITY); +#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */ +} + +#endif /* OSAL_ST_MODE != OSAL_ST_MODE_NONE */ + +/** + * @} + */ diff --git a/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h new file mode 100644 index 0000000..cd076d6 --- /dev/null +++ b/os/hal/ports/TIVA/LLD/GPTM/hal_st_lld.h @@ -0,0 +1,270 @@ +/* + Copyright (C) 2014..2016 Marco Veeneman + + 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 Tiva/LLD/st_lld.h + * @brief ST Driver subsystem low level driver header. + * @details This header is designed to be include-able without having to + * include other files from the HAL. + * + * @addtogroup ST + * @{ + */ + +#ifndef HAL_ST_LLD_H +#define HAL_ST_LLD_H + +#include "mcuconf.h" +#include "tiva_registry.h" + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/** + * @name Configuration options + * @{ + */ + +/** + * @brief SysTick timer IRQ priority. + */ +#if !defined(TIVA_ST_IRQ_PRIORITY) || defined(__DOXYGEN__) +#define TIVA_ST_IRQ_PRIORITY 2 +#endif + +/** + * @brief GPTx unit (by number) to be used for free running operations. + * @note You must select a 32 bits timer if a 32 bits @p systick_t type + * is required. + */ +#if !defined(TIVA_ST_TIMER_NUMBER) || defined(__DOXYGEN__) +#define TIVA_ST_TIMER_NUMBER 0 +#endif + +/** + * @brief When set to @p TRUE a wide timer is used. When set to @p FALSE a + * normal timer is used. + */ +#if !defined(TIVA_ST_USE_WIDE_TIMER) || defined(__DOXYGEN__) +#define TIVA_ST_USE_WIDE_TIMER TRUE +#endif + +/** + * @} + */ + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +#if (TIVA_ST_USE_WIDE_TIMER == TRUE) + +#if TIVA_ST_TIMER_NUMBER == 0 +#if !TIVA_HAS_WGPT0 +#error "WGPT0 not present" +#endif +#define TIVA_ST_TIM WTIMER0_BASE + +#elif TIVA_ST_TIMER_NUMBER == 1 +#if !TIVA_HAS_WGPT1 +#error "WGPT1 not present" +#endif +#define TIVA_ST_TIM WTIMER1_BASE + +#elif TIVA_ST_TIMER_NUMBER == 2 +#if !TIVA_HAS_WGPT2 +#error "WGPT2 not present" +#endif +#define TIVA_ST_TIM WTIMER2_BASE + +#elif TIVA_ST_TIMER_NUMBER == 3 +#if !TIVA_HAS_WGPT3 +#error "WGPT3 not present" +#endif +#define TIVA_ST_TIM WTIMER3_BASE + +#elif TIVA_ST_TIMER_NUMBER == 4 +#if !TIVA_HAS_WGPT4 +#error "WGPT4 not present" +#endif +#define TIVA_ST_TIM WTIMER4_BASE + +#elif TIVA_ST_TIMER_NUMBER == 5 +#if !TIVA_HAS_WGPT5 +#error "WGPT5 not present" +#endif +#define TIVA_ST_TIM WTIMER5_BASE + +#else +#error "TIVA_ST_USE_TIMER specifies an unsupported timer" +#endif + +#elif (TIVA_ST_USE_WIDE_TIMER == FALSE) + +#if TIVA_ST_TIMER_NUMBER == 0 +#if !TIVA_HAS_GPT0 +#error "GPT0 not present" +#endif +#define TIVA_ST_TIM TIMER0_BASE + +#elif TIVA_ST_TIMER_NUMBER == 1 +#if !TIVA_HAS_GPT1 +#error "GPT1 not present" +#endif +#define TIVA_ST_TIM TIMER1_BASE + +#elif TIVA_ST_TIMER_NUMBER == 2 +#if !TIVA_HAS_GPT2 +#error "GPT2 not present" +#endif +#define TIVA_ST_TIM TIMER2_BASE + +#elif TIVA_ST_TIMER_NUMBER == 3 +#if !TIVA_HAS_GPT3 +#error "GPT3 not present" +#endif +#define TIVA_ST_TIM TIMER3_BASE + +#elif TIVA_ST_TIMER_NUMBER == 4 +#if !TIVA_HAS_GPT4 +#error "GPT4 not present" +#endif +#define TIVA_ST_TIM TIMER4_BASE + +#elif TIVA_ST_TIMER_NUMBER == 5 +#if !TIVA_HAS_GPT5 +#error "GPT5 not present" +#endif +#define TIVA_ST_TIM TIMER5_BASE + +#else +#error "TIVA_ST_TIMER_NUMBER specifies an unsupported timer" +#endif + +#else +#error "wrong value defined for TIVA_ST_USE_WIDE_TIMER" +#endif + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +#ifdef __cplusplus +extern "C" { +#endif + void st_lld_init(void); +#ifdef __cplusplus +} +#endif + +/*===========================================================================*/ +/* Driver inline functions. */ +/*===========================================================================*/ + +/** + * @brief Returns the time counter value. + * + * @return The counter value. + * + * @notapi + */ +static inline systime_t st_lld_get_counter(void) +{ + return (systime_t) (((systime_t) 0xffffffff) - HWREG(TIVA_ST_TIM + TIMER_O_TAV)); +} + +/** + * @brief Starts the alarm. + * @note Makes sure that no spurious alarms are triggered after + * this call. + * + * @param[in] time the time to be set for the first alarm + * + * @notapi + */ +static inline void st_lld_start_alarm(systime_t time) +{ + HWREG(TIVA_ST_TIM + TIMER_O_TAMATCHR) = (systime_t) (((systime_t) 0xffffffff) - time); + HWREG(TIVA_ST_TIM + TIMER_O_ICR) = HWREG(TIVA_ST_TIM + TIMER_O_MIS); + HWREG(TIVA_ST_TIM + TIMER_O_IMR) = TIMER_IMR_TAMIM; +} + +/** + * @brief Stops the alarm interrupt. + * + * @notapi + */ +static inline void st_lld_stop_alarm(void) +{ + HWREG(TIVA_ST_TIM + TIMER_O_IMR) = 0; +} + +/** + * @brief Sets the alarm time. + * + * @param[in] time the time to be set for the next alarm + * + * @notapi + */ +static inline void st_lld_set_alarm(systime_t time) +{ + HWREG(TIVA_ST_TIM + TIMER_O_TAMATCHR) = (systime_t) (((systime_t) 0xffffffff) - time); +} + +/** + * @brief Returns the current alarm time. + * + * @return The currently set alarm time. + * + * @notapi + */ +static inline systime_t st_lld_get_alarm(void) +{ + return (systime_t) (((systime_t)0xffffffff) - HWREG(TIVA_ST_TIM + TIMER_O_TAMATCHR)); +} + +/** + * @brief Determines if the alarm is active. + * + * @return The alarm status. + * @retval false if the alarm is not active. + * @retval true is the alarm is active + * + * @notapi + */ +static inline bool st_lld_is_alarm_active(void) +{ + return (bool) ((HWREG(TIVA_ST_TIM + TIMER_O_IMR) & TIMER_IMR_TAMIM) !=0); +} + +#endif /* HAL_ST_LLD_H */ + +/** + * @} + */ |