diff options
Diffstat (limited to 'os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c')
| -rw-r--r-- | os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c | 756 |
1 files changed, 756 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..8fb02f5 --- /dev/null +++ b/os/hal/ports/TIVA/LLD/GPTM/hal_gpt_lld.c @@ -0,0 +1,756 @@ +/* + Copyright (C) 2014..2017 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 GPTM/hal_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 */ + +/** @} */ |