diff options
Diffstat (limited to 'os')
| -rw-r--r-- | os/hal/platforms/LPC11xx/ext_lld.c | 259 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/ext_lld.h | 185 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/ext_lld_isr.c | 176 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/ext_lld_isr.h | 111 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/i2c_lld.c | 438 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/i2c_lld.h | 225 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/platform.mk | 6 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/pwm_lld.c | 407 | ||||
| -rw-r--r-- | os/hal/platforms/LPC11xx/pwm_lld.h | 364 | ||||
| -rw-r--r-- | os/ports/GCC/ARMCMx/LPC11xx/ld/LPC11C24.ld | 152 |
10 files changed, 2322 insertions, 1 deletions
diff --git a/os/hal/platforms/LPC11xx/ext_lld.c b/os/hal/platforms/LPC11xx/ext_lld.c new file mode 100644 index 000000000..c22cd83be --- /dev/null +++ b/os/hal/platforms/LPC11xx/ext_lld.c @@ -0,0 +1,259 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx EXT driver - Copyright (C) 2013 Marcin Jokel
+
+ 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 LPC11xx/ext_lld.c
+ * @brief LPC11xx EXT subsystem low level driver source.
+ *
+ * @addtogroup EXT
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_EXT || defined(__DOXYGEN__)
+
+#include "ext_lld_isr.h"
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/**
+ * @brief EXTD0 driver identifier.
+ */
+#if LPC11xx_EXT_USE_EXT0 || defined(__DOXYGEN__)
+EXTDriver EXTD0;
+#endif
+
+/**
+ * @brief EXTD1 driver identifier.
+ */
+#if LPC11xx_EXT_USE_EXT1 || defined(__DOXYGEN__)
+EXTDriver EXTD1;
+#endif
+
+/**
+ * @brief EXTD2 driver identifier.
+ */
+#if LPC11xx_EXT_USE_EXT2 || defined(__DOXYGEN__)
+EXTDriver EXTD2;
+#endif
+
+/**
+ * @brief EXTD3 driver identifier.
+ */
+#if LPC11xx_EXT_USE_EXT3 || defined(__DOXYGEN__)
+EXTDriver EXTD3;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level EXT driver initialization.
+ *
+ * @notapi
+ */
+void ext_lld_init(void) {
+
+ /* Driver initialization.*/
+#if LPC11xx_EXT_USE_EXT0
+ extObjectInit(&EXTD0);
+ EXTD0.gpio = LPC_GPIO0;
+#endif
+
+#if LPC11xx_EXT_USE_EXT1
+ extObjectInit(&EXTD1);
+ EXTD1.gpio = LPC_GPIO1;
+#endif
+
+#if LPC11xx_EXT_USE_EXT2
+ extObjectInit(&EXTD2);
+ EXTD2.gpio = LPC_GPIO2;
+#endif
+
+#if LPC11xx_EXT_USE_EXT3
+ extObjectInit(&EXTD3);
+ EXTD3.gpio = LPC_GPIO3;
+#endif
+}
+
+/**
+ * @brief Configures and activates the EXT peripheral.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ *
+ * @notapi
+ */
+void ext_lld_start(EXTDriver *extp) {
+ int i;
+
+ /* Configure all pins as edge sensitive */
+#if LPC11xx_EXT_USE_EXT0
+ if (extp == &EXTD0) {
+ LPC_GPIO0->IS = 0;
+ ext_lld_exti_irq_enable(EXTI0_IRQ);
+ }
+#endif
+
+#if LPC11xx_EXT_USE_EXT1
+ if (extp == &EXTD1) {
+ LPC_GPIO1->IS = 0;
+ ext_lld_exti_irq_enable(EXTI1_IRQ);
+ }
+#endif
+
+#if LPC11xx_EXT_USE_EXT2
+ if (extp == &EXTD2) {
+ LPC_GPIO2->IS = 0;
+ ext_lld_exti_irq_enable(EXTI2_IRQ);
+ }
+#endif
+
+#if LPC11xx_EXT_USE_EXT3
+ if (extp == &EXTD3) {
+ LPC_GPIO3->IS = 0;
+ ext_lld_exti_irq_enable(EXTI3_IRQ);
+ }
+#endif
+
+ /* Configuration of autostart channels.*/
+ for (i = 0; i < EXT_MAX_CHANNELS; i++)
+ if (extp->config->channels[i].mode & EXT_CH_MODE_AUTOSTART)
+ ext_lld_channel_enable(extp, i);
+ else
+ ext_lld_channel_disable(extp, i);
+}
+
+/**
+ * @brief Deactivates the EXT peripheral.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ *
+ * @notapi
+ */
+void ext_lld_stop(EXTDriver *extp) {
+
+ LPC_GPIO_TypeDef * gp = extp->gpio;
+
+ if (extp->state == EXT_ACTIVE) {
+#if LPC11xx_EXT_USE_EXT0
+ if (extp == &EXTD0) {
+ ext_lld_exti_irq_disable(EXTI0_IRQ);
+ }
+#endif
+
+#if LPC11xx_EXT_USE_EXT1
+ if (extp == &EXTD1) {
+ ext_lld_exti_irq_disable(EXTI1_IRQ);
+ }
+#endif
+
+#if LPC11xx_EXT_USE_EXT2
+ if (extp == &EXTD2) {
+ ext_lld_exti_irq_disable(EXTI2_IRQ);
+ }
+#endif
+
+#if LPC11xx_EXT_USE_EXT3
+ if (extp == &EXTD3) {
+ ext_lld_exti_irq_disable(EXTI3_IRQ);
+ }
+#endif
+ }
+
+ gp->IE = 0;
+ gp->IC = 0xFFFFFFFF;
+ __NOP();
+ __NOP();
+}
+
+/**
+ * @brief Enables an EXT channel.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ * @param[in] channel channel to be enabled
+ *
+ * @notapi
+ */
+void ext_lld_channel_enable(EXTDriver *extp, expchannel_t channel) {
+
+ LPC_GPIO_TypeDef * gp;
+
+ gp = extp->gpio;
+
+ /* Programming edge irq enables */
+ if (extp->config->channels[channel].mode & EXT_CH_MODE_BOTH_EDGES)
+ gp->IBE |= (1 << channel);
+ else {
+ gp->IBE &= ~(1 << channel);
+ if (extp->config->channels[channel].mode & EXT_CH_MODE_RISING_EDGE)
+ gp->IEV |= (1 << channel);
+ else
+ gp->IEV &= (1 << channel);
+ }
+
+ gp->IC = (1 << channel); /* Clear interrupt on selected channel */
+ __NOP();
+ __NOP();
+
+ gp->IE |= (1 << channel); /* Interrupt on selected channel
+ is not masked */
+}
+
+/**
+ * @brief Disables an EXT channel.
+ *
+ * @param[in] extp pointer to the @p EXTDriver object
+ * @param[in] channel channel to be disabled
+ *
+ * @notapi
+ */
+void ext_lld_channel_disable(EXTDriver *extp, expchannel_t channel) {
+
+ LPC_GPIO_TypeDef * gp;
+
+ gp = extp->gpio;
+
+ gp->IE &= ~(1 << channel); /* Mask interrupt on selected channel */
+ gp->IC = (1 << channel); /* Clear interrupt on selected channel */
+ __NOP();
+ __NOP();
+}
+
+#endif /* HAL_USE_EXT */
+
+/** @} */
diff --git a/os/hal/platforms/LPC11xx/ext_lld.h b/os/hal/platforms/LPC11xx/ext_lld.h new file mode 100644 index 000000000..9a05f6d22 --- /dev/null +++ b/os/hal/platforms/LPC11xx/ext_lld.h @@ -0,0 +1,185 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx EXT driver - Copyright (C) 2013 Marcin Jokel
+ - Copyright (C) 2013 mike brown
+
+ 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 LPC11xx/ext_lld.h
+ * @brief LPC11xx EXT subsystem low level driver header.
+ *
+ * @addtogroup EXT
+ * @{
+ */
+
+#ifndef _EXT_LLD_H_
+#define _EXT_LLD_H_
+
+#if HAL_USE_EXT || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/**
+ * @brief Available number of EXT channels.
+ */
+#define EXT_MAX_CHANNELS 12
+
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief EXT0 driver enable switch.
+ * @details If set to @p TRUE the support for EXT0 is included.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_EXT_USE_EXT0) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_USE_EXT0 FALSE
+#endif
+
+/**
+ * @brief EXT1 driver enable switch.
+ * @details If set to @p TRUE the support for EXT1 is included.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_EXT_USE_EXT1) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_USE_EXT1 FALSE
+#endif
+
+/**
+ * @brief EXT2 driver enable switch.
+ * @details If set to @p TRUE the support for EXT2 is included.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_EXT_USE_EXT2) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_USE_EXT2 FALSE
+#endif
+
+/**
+ * @brief EXT3 driver enable switch.
+ * @details If set to @p TRUE the support for EXT3 is included.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_EXT_USE_EXT3) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_USE_EXT3 FALSE
+#endif
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief EXT channel identifier.
+ */
+typedef uint32_t expchannel_t;
+
+/**
+ * @brief Type of an EXT generic notification callback.
+ *
+ * @param[in] extp pointer to the @p EXPDriver object triggering the
+ * callback
+ */
+typedef void (*extcallback_t)(EXTDriver *extp, expchannel_t channel);
+
+/**
+ * @brief Channel configuration structure.
+ */
+typedef struct {
+ /**
+ * @brief Channel mode.
+ */
+ uint8_t mode;
+
+ /**
+ * @brief Channel callback.
+ */
+ extcallback_t cb;
+} EXTChannelConfig;
+
+/**
+ * @brief Driver configuration structure.
+ * @note It could be empty on some architectures.
+ */
+typedef struct {
+ /**
+ * @brief Channel configurations.
+ */
+ EXTChannelConfig channels[EXT_MAX_CHANNELS];
+ /* End of the mandatory fields.*/
+} EXTConfig;
+
+/**
+ * @brief Structure representing an EXT driver.
+ */
+struct EXTDriver {
+ /**
+ * @brief Driver state.
+ */
+ extstate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const EXTConfig *config;
+ /* End of the mandatory fields.*/
+ LPC_GPIO_TypeDef *gpio;
+};
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if LPC11xx_EXT_USE_EXT0 || !defined(__DOXYGEN__)
+extern EXTDriver EXTD0;
+#endif
+
+#if LPC11xx_EXT_USE_EXT1 || !defined(__DOXYGEN__)
+extern EXTDriver EXTD1;
+#endif
+
+#if LPC11xx_EXT_USE_EXT2 || !defined(__DOXYGEN__)
+extern EXTDriver EXTD2;
+#endif
+
+#if LPC11xx_EXT_USE_EXT3 || !defined(__DOXYGEN__)
+extern EXTDriver EXTD3;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void ext_lld_init(void);
+ void ext_lld_start(EXTDriver *extp);
+ void ext_lld_stop(EXTDriver *extp);
+ void ext_lld_channel_enable(EXTDriver *extp, expchannel_t channel);
+ void ext_lld_channel_disable(EXTDriver *extp, expchannel_t channel);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_EXT */
+
+#endif /* _EXT_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/platforms/LPC11xx/ext_lld_isr.c b/os/hal/platforms/LPC11xx/ext_lld_isr.c new file mode 100644 index 000000000..9d3b92eeb --- /dev/null +++ b/os/hal/platforms/LPC11xx/ext_lld_isr.c @@ -0,0 +1,176 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx EXT driver - Copyright (C) 2013 Marcin Jokel
+
+ 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 LPC11xx/ext_lld_isr.c
+ * @brief LPC11xx EXT subsystem low level driver ISR code.
+ *
+ * @addtogroup EXT
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_EXT || defined(__DOXYGEN__)
+
+#include "ext_lld_isr.h"
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+#if LPC11xx_EXT_USE_EXT0 || LPC11xx_EXT_USE_EXT1 || LPC11xx_EXT_USE_EXT2 || \
+ LPC11xx_EXT_USE_EXT3 || defined(__DOXYGEN__)
+/**
+ * @brief I2C error handler.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+static void ext_lld_serve_interrupt(EXTDriver *extp) {
+ uint32_t port_stat;
+ uint8_t i;
+
+ port_stat = extp->gpio->MIS; /* Read interrupt status */
+ extp->gpio->IC = port_stat; /* Clear interrupt flags */
+
+ for (i = 0; i < EXT_MAX_CHANNELS; i++) {
+ if (port_stat & 0x01) {
+ extp->config->channels[i].cb(extp, i);
+ }
+ port_stat = port_stat >> 1;
+ }
+}
+#endif
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/**
+ * @brief PIO0 interrupt handler.
+ *
+ * @isr
+ */
+#if LPC11xx_EXT_USE_EXT0 || defined(__DOXYGEN__)
+CH_IRQ_HANDLER(VectorBC) {
+
+ CH_IRQ_PROLOGUE();
+ ext_lld_serve_interrupt(&EXTD0);
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+#if LPC11xx_EXT_USE_EXT1 || defined(__DOXYGEN__)
+/**
+ * @brief PIO1 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(VectorB8) {
+
+ CH_IRQ_PROLOGUE();
+ ext_lld_serve_interrupt(&EXTD1);
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+#if LPC11xx_EXT_USE_EXT2 || defined(__DOXYGEN__)
+/**
+ * @brief PIO2 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(VectorB4) {
+
+ CH_IRQ_PROLOGUE();
+ ext_lld_serve_interrupt(&EXTD2);
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+#if LPC11xx_EXT_USE_EXT3 || defined(__DOXYGEN__)
+/**
+ * @brief PIO_3 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(VectorB0) {
+
+ CH_IRQ_PROLOGUE();
+ ext_lld_serve_interrupt(&EXTD3);
+ CH_IRQ_EPILOGUE();
+}
+#endif
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Enables EXTI IRQ sources.
+ *
+ * @notapi
+ */
+void ext_lld_exti_irq_enable(extirq_t irqn) {
+
+ uint32_t pmask;
+
+ switch (irqn) {
+ case EXTI0_IRQ:
+ pmask = LPC11xx_EXT_EXTI0_IRQ_PRIORITY;
+ break;
+ case EXTI1_IRQ:
+ pmask = LPC11xx_EXT_EXTI1_IRQ_PRIORITY;
+ break;
+ case EXTI2_IRQ:
+ pmask = LPC11xx_EXT_EXTI2_IRQ_PRIORITY;
+ break;
+ case EXTI3_IRQ:
+ pmask = LPC11xx_EXT_EXTI3_IRQ_PRIORITY;
+ break;
+ }
+ nvicEnableVector(EINT0_IRQn - irqn, CORTEX_PRIORITY_MASK(pmask));
+
+}
+
+/**
+ * @brief Disables EXTI IRQ sources.
+ *
+ * @notapi
+ */
+void ext_lld_exti_irq_disable(extirq_t irqn) {
+
+ nvicDisableVector(EINT0_IRQn - irqn);
+}
+
+#endif /* HAL_USE_EXT */
+
+/** @} */
diff --git a/os/hal/platforms/LPC11xx/ext_lld_isr.h b/os/hal/platforms/LPC11xx/ext_lld_isr.h new file mode 100644 index 000000000..442d109da --- /dev/null +++ b/os/hal/platforms/LPC11xx/ext_lld_isr.h @@ -0,0 +1,111 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx EXT driver - Copyright (C) 2013 Marcin Jokel
+
+ 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 LPC11xx/ext_lld_isr.h
+ * @brief LPC11xx EXT subsystem low level driver ISR header.
+ *
+ * @addtogroup EXT
+ * @{
+ */
+
+#ifndef _EXT_LLD_ISR_H_
+#define _EXT_LLD_ISR_H_
+
+#if HAL_USE_EXT || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+#define EXTI0_IRQ 0
+#define EXTI1_IRQ 1
+#define EXTI2_IRQ 2
+#define EXTI3_IRQ 3
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief EXTI0 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_EXT_EXTI0_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_EXTI0_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief EXTI1 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_EXT_EXTI1_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_EXTI1_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief EXTI2 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_EXT_EXTI2_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_EXTI2_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief EXTI3 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_EXT_EXTI3_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_EXT_EXTI3_IRQ_PRIORITY 3
+#endif
+
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief EXT irq port identifier.
+ */
+typedef uint32_t extirq_t;
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void ext_lld_exti_irq_enable(extirq_t irqn);
+ void ext_lld_exti_irq_disable(extirq_t irqn);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_EXT */
+
+#endif /* _EXT_LLD_ISR_H_ */
+
+/** @} */
diff --git a/os/hal/platforms/LPC11xx/i2c_lld.c b/os/hal/platforms/LPC11xx/i2c_lld.c new file mode 100644 index 000000000..c68f11460 --- /dev/null +++ b/os/hal/platforms/LPC11xx/i2c_lld.c @@ -0,0 +1,438 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx I2C driver - Copyright (C) 2013 Marcin Jokel
+
+ 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.
+*/
+
+/*
+ Concepts and parts of this file have been contributed by Uladzimir Pylinsky
+ aka barthess.
+ */
+
+
+/**
+ * @file LPC11xx/i2c_lld.h
+ * @brief LPC11xx I2C subsystem low level driver header.
+ *
+ * @addtogroup I2C
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_I2C || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/** @brief I2C1 driver identifier.*/
+I2CDriver I2CD1;
+
+/*===========================================================================*/
+/* Driver local variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Wakes up the waiting thread.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ * @param[in] msg wakeup message
+ *
+ * @notapi
+ */
+#define wakeup_isr(i2cp, msg) { \
+ chSysLockFromIsr(); \
+ if ((i2cp)->thread != NULL) { \
+ Thread *tp = (i2cp)->thread; \
+ (i2cp)->thread = NULL; \
+ tp->p_u.rdymsg = (msg); \
+ chSchReadyI(tp); \
+ } \
+ chSysUnlockFromIsr(); \
+}
+
+/**
+ * @brief Handling of stalled I2C transactions.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+static void i2c_lld_safety_timeout(void *p) {
+ I2CDriver *i2cp = (I2CDriver *)p;
+
+ chSysLockFromIsr();
+ if (i2cp->thread) {
+ Thread *tp = i2cp->thread;
+ i2cp->thread = NULL;
+ tp->p_u.rdymsg = RDY_TIMEOUT;
+ chSchReadyI(tp);
+ }
+ chSysUnlockFromIsr();
+}
+
+/**
+ * @brief I2C error handler.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+static void i2c_lld_serve_error_interrupt(I2CDriver *i2cp, uint32_t status) {
+ i2cflags_t error = 0;
+
+ switch (status) {
+ case I2C_STATE_ARB_LOST:
+ error = I2CD_ARBITRATION_LOST;
+ break;
+ case I2C_STATE_BUS_ERROR:
+ error = I2CD_BUS_ERROR;
+ break;
+ case I2C_STATE_MS_SLAR_NACK:
+ case I2C_STATE_MS_TDAT_NACK:
+ case I2C_STATE_MS_SLAW_NACK:
+ error = I2CD_ACK_FAILURE ;
+ break;
+ }
+
+ /* If some error has been identified then sends wakes the waiting thread.*/
+ i2cp->errors = error;
+ wakeup_isr(i2cp, RDY_RESET);
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+/**
+ * @brief I2C event interrupt handler.
+ *
+ * @notapi
+ */
+CH_IRQ_HANDLER(Vector7C) {
+ uint32_t status;
+
+ CH_IRQ_PROLOGUE();
+ status = LPC_I2C->STAT;
+ switch(status) {
+ case I2C_STATE_MS_START: /* A START condition has been transmitted. */
+ if (I2CD1.txbytes > 0) {
+ LPC_I2C->DAT = I2CD1.addr; /* Write slave address with WR bit. */
+ }
+ else {
+ LPC_I2C->DAT = I2CD1.addr | I2C_RD_BIT; /* Write slave address with RD bit. */
+ }
+
+ LPC_I2C->CONCLR = I2C_CONCLR_STAC | I2C_CONCLR_SIC; /* Clear START and SI bit. */
+ break;
+
+ case I2C_STATE_MS_SLAR_NACK: /* NOT ACK has been received, Master will be transmitted STOP. */
+ case I2C_STATE_MS_TDAT_NACK: /* NOT ACK has been received, Master will be transmitted STOP. */
+ case I2C_STATE_MS_SLAW_NACK: /* NOT ACK has been received, Master will be transmitted STOP. */
+ LPC_I2C->CONSET = I2C_CONSET_STO; /* Set STOP bit. */
+ LPC_I2C->CONCLR = I2C_CONCLR_SIC; /* Clear SI bit. */
+ i2c_lld_serve_error_interrupt(&I2CD1, status);
+ break;
+
+ case I2C_STATE_MS_SLAW_ACK: /* SLA + W has been transmitted, ACK has been received. */
+ case I2C_STATE_MS_TDAT_ACK: /* Data byte has been transmitted, ACK has been received. */
+ if (I2CD1.txbytes > 0) {
+ LPC_I2C->DAT = *I2CD1.txbuf++; /* Write data. */
+ I2CD1.txbytes--;
+ }
+ else {
+ if (I2CD1.rxbytes > 0) {
+ LPC_I2C->CONSET = I2C_CONSET_STO | I2C_CONSET_STA; /* Set START and STOP bit. */
+ } /* STOP bit will be transmit, then START bit. */
+ else {
+ LPC_I2C->CONSET = I2C_CONSET_STO; /* Set STOP bit. */
+ wakeup_isr(&I2CD1, RDY_OK);
+ }
+ }
+ LPC_I2C->CONCLR = I2C_CONCLR_SIC; /* Clear SI bit. */
+ break;
+
+ case I2C_STATE_MS_SLAR_ACK: /* SLA + R has been transmitted, ACK has been received. */
+ case I2C_STATE_MS_RDAT_ACK: /* Data byte has been received, ACK has been returned. */
+ if (status == I2C_STATE_MS_RDAT_ACK) {
+ *I2CD1.rxbuf++ = LPC_I2C->DAT; /* Read data */
+ I2CD1.rxbytes--;
+ }
+ if (I2CD1.rxbytes == 1) {
+ LPC_I2C->CONCLR = I2C_CONCLR_SIC | I2C_CONCLR_AAC; /* Clear SI and ACK bit. */
+ }
+ else {
+ LPC_I2C->CONSET = I2C_CONSET_AA; /* Set ACK bit. */
+ LPC_I2C->CONCLR = I2C_CONCLR_SIC; /* Clear SI bit. */
+ }
+ break;
+
+ case I2C_STATE_MS_RDAT_NACK: /* Data byte has been received, NOT ACK has been returned. */
+ *I2CD1.rxbuf++ = LPC_I2C->DAT; /* Read data. */
+ I2CD1.rxbytes--;
+ LPC_I2C->CONSET = I2C_CONSET_STO; /* Set STOP bit. */
+ LPC_I2C->CONCLR = I2C_CONCLR_SIC; /* Clear SI bit. */
+ wakeup_isr(&I2CD1, RDY_OK);
+ break;
+
+ case I2C_STATE_BUS_ERROR: /* Bus error. */
+ case I2C_STATE_ARB_LOST: /* Arbitration lost. */
+ LPC_I2C->CONCLR = I2C_CONCLR_SIC; /* Clear SI bit. */
+ i2c_lld_serve_error_interrupt(&I2CD1, status);
+ break;
+
+ }
+
+ CH_IRQ_EPILOGUE();
+}
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level I2C driver initialization.
+ *
+ * @notapi
+ */
+void i2c_lld_init(void) {
+
+ i2cObjectInit(&I2CD1);
+ I2CD1.thread = NULL;
+ I2CD1.i2c = LPC_I2C;
+
+ LPC_IOCON->PIO0_4 = 0x01; /* Set I2C SCL pin function */
+ LPC_IOCON->PIO0_5 = 0x01; /* Set I2C SDA pin function */
+}
+
+/**
+ * @brief Configures and activates the I2C peripheral.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+void i2c_lld_start(I2CDriver *i2cp) {
+ uint32_t i2cscl;
+ uint32_t mulh, mull, div;
+ LPC_I2C_TypeDef *dp = i2cp->i2c;
+
+ /* Make sure I2C peripheral is disabled */
+ dp->CONCLR = I2C_CONCLR_ENC;
+
+ /* If in stopped state then enables the I2C clock. */
+ if (i2cp->state == I2C_STOP) {
+
+ if (&I2CD1 == i2cp) {
+ LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 5); /* Enable clock. */
+ LPC_SYSCON->PRESETCTRL &= ~(1 << 1); /* Reset I2C peripheral.*/
+ __NOP();
+ LPC_SYSCON->PRESETCTRL |= (1 << 1);
+ nvicEnableVector(I2C_IRQn,
+ CORTEX_PRIORITY_MASK(LPC11xx_I2C_IRQ_PRIORITY));
+ }
+
+ }
+
+ /* Setup I2C clock parameters.*/
+ i2cscl = (LPC11xx_SYSCLK/(i2cp->config->clock_timing));
+ if (i2cp->config->mode == I2C_FAST_MODE) {
+ div = 19;
+ mull = 13;
+ mulh = 6;
+ } else if (i2cp->config->mode == I2C_FAST_MODE_PLUS) {
+ div = 3;
+ mull = 2;
+ mulh = 1;
+ } else { /* i2cp->config->mode == I2C_STANDARD_MODE */
+ div = 2;
+ mull = 1;
+ mulh = 1;
+ }
+
+ dp->SCLH = (mulh * i2cscl) / div;
+ dp->SCLL = (mull * i2cscl) / div;
+
+ /* Enable I2C.*/
+ dp->CONSET |= I2C_CONSET_EN;
+}
+
+/**
+ * @brief Deactivates the I2C peripheral.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+void i2c_lld_stop(I2CDriver *i2cp) {
+
+ /* If not in stopped state then disables the I2C clock.*/
+ if (i2cp->state != I2C_STOP) {
+
+ /* I2C disable.*/
+ i2cp->i2c->CONCLR = I2C_CONCLR_ENC;
+
+ if (&I2CD1 == i2cp) {
+ nvicDisableVector(I2C_IRQn);
+ LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 5);
+ }
+ }
+}
+
+/**
+ * @brief Receives data via the I2C bus as master.
+ * @details Number of receiving bytes must be more than 1 on STM32F1x. This is
+ * hardware restriction.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ * @param[in] addr slave device address
+ * @param[out] rxbuf pointer to the receive buffer
+ * @param[in] rxbytes number of bytes to be received
+ * @param[in] timeout the number of ticks before the operation timeouts,
+ * the following special values are allowed:
+ * - @a TIME_INFINITE no timeout.
+ * .
+ * @return The operation status.
+ * @retval RDY_OK if the function succeeded.
+ * @retval RDY_RESET if one or more I2C errors occurred, the errors can
+ * be retrieved using @p i2cGetErrors().
+ * @retval RDY_TIMEOUT if a timeout occurred before operation end. <b>After a
+ * timeout the driver must be stopped and restarted
+ * because the bus is in an uncertain state</b>.
+ *
+ * @notapi
+ */
+msg_t i2c_lld_master_receive_timeout(I2CDriver *i2cp, i2caddr_t addr,
+ uint8_t *rxbuf, size_t rxbytes,
+ systime_t timeout) {
+ LPC_I2C_TypeDef *dp = i2cp->i2c;
+ VirtualTimer vt;
+
+ i2cp->addr = addr << 1;
+ /* Global timeout for the whole operation.*/
+ if (timeout != TIME_INFINITE)
+ chVTSetI(&vt, timeout, i2c_lld_safety_timeout, (void *)i2cp);
+
+ /* Releases the lock from high level driver.*/
+ chSysUnlock();
+
+ /* Initializes driver fields */
+ i2cp->errors = 0;
+ i2cp->rxbuf = rxbuf;
+ i2cp->rxbytes = rxbytes;
+
+ /* This lock will be released in high level driver.*/
+ chSysLock();
+
+ /* Atomic check on the timer in order to make sure that a timeout didn't
+ happen outside the critical zone.*/
+ if ((timeout != TIME_INFINITE) && !chVTIsArmedI(&vt))
+ return RDY_TIMEOUT;
+
+ /* Starts the operation.*/
+ dp->CONSET = I2C_CONSET_STA;
+
+ /* Waits for the operation completion or a timeout.*/
+ i2cp->thread = chThdSelf();
+ chSchGoSleepS(THD_STATE_SUSPENDED);
+ if ((timeout != TIME_INFINITE) && chVTIsArmedI(&vt))
+ chVTResetI(&vt);
+
+ return chThdSelf()->p_u.rdymsg;
+}
+
+/**
+ * @brief Transmits data via the I2C bus as master.
+ * @details Number of receiving bytes must be 0 or more than 1 on STM32F1x.
+ * This is hardware restriction.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ * @param[in] addr slave device address
+ * @param[in] txbuf pointer to the transmit buffer
+ * @param[in] txbytes number of bytes to be transmitted
+ * @param[out] rxbuf pointer to the receive buffer
+ * @param[in] rxbytes number of bytes to be received
+ * @param[in] timeout the number of ticks before the operation timeouts,
+ * the following special values are allowed:
+ * - @a TIME_INFINITE no timeout.
+ * .
+ * @return The operation status.
+ * @retval RDY_OK if the function succeeded.
+ * @retval RDY_RESET if one or more I2C errors occurred, the errors can
+ * be retrieved using @p i2cGetErrors().
+ * @retval RDY_TIMEOUT if a timeout occurred before operation end. <b>After a
+ * timeout the driver must be stopped and restarted
+ * because the bus is in an uncertain state</b>.
+ *
+ * @notapi
+ */
+msg_t i2c_lld_master_transmit_timeout(I2CDriver *i2cp, i2caddr_t addr,
+ const uint8_t *txbuf, size_t txbytes,
+ uint8_t *rxbuf, size_t rxbytes,
+ systime_t timeout) {
+ LPC_I2C_TypeDef *dp = i2cp->i2c;
+ VirtualTimer vt;
+
+ i2cp->addr = addr << 1;
+ /* Global timeout for the whole operation.*/
+ if (timeout != TIME_INFINITE)
+ chVTSetI(&vt, timeout, i2c_lld_safety_timeout, (void *)i2cp);
+
+ /* Releases the lock from high level driver.*/
+ chSysUnlock();
+
+ /* Initializes driver fields */
+ i2cp->errors = 0;
+ i2cp->txbuf = txbuf;
+ i2cp->txbytes = txbytes;
+ i2cp->rxbuf = rxbuf;
+ i2cp->rxbytes = rxbytes;
+
+ /* This lock will be released in high level driver.*/
+ chSysLock();
+
+ /* Atomic check on the timer in order to make sure that a timeout didn't
+ happen outside the critical zone.*/
+ if ((timeout != TIME_INFINITE) && !chVTIsArmedI(&vt))
+ return RDY_TIMEOUT;
+
+ /* Starts the operation.*/
+ dp->CONSET = I2C_CONSET_STA;
+
+ /* Waits for the operation completion or a timeout.*/
+ i2cp->thread = chThdSelf();
+ chSchGoSleepS(THD_STATE_SUSPENDED);
+
+ if ((timeout != TIME_INFINITE) && chVTIsArmedI(&vt))
+ chVTResetI(&vt);
+
+ return chThdSelf()->p_u.rdymsg;
+}
+
+#endif /* HAL_USE_I2C */
+
+/** @} */
diff --git a/os/hal/platforms/LPC11xx/i2c_lld.h b/os/hal/platforms/LPC11xx/i2c_lld.h new file mode 100644 index 000000000..b908ba6e4 --- /dev/null +++ b/os/hal/platforms/LPC11xx/i2c_lld.h @@ -0,0 +1,225 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx I2C driver - Copyright (C) 2013 Marcin Jokel
+
+ 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.
+*/
+/*
+ Concepts and parts of this file have been contributed by Uladzimir Pylinsky
+ aka barthess.
+ */
+
+/**
+ * @file LPC11xx/i2c_lld.h
+ * @brief LPC11xx I2C subsystem low level driver header.
+ *
+ * @addtogroup I2C
+ * @{
+ */
+
+#ifndef _I2C_LLD_H_
+#define _I2C_LLD_H_
+
+#if HAL_USE_I2C || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+#define I2C_CONSET_AA 0x04 /* Assert acknowledge flag. */
+#define I2C_CONSET_SI 0x08 /* I2C interrupt flag. */
+#define I2C_CONSET_STO 0x10 /* STOP flag. */
+#define I2C_CONSET_STA 0x20 /* START flag. */
+#define I2C_CONSET_EN 0x40 /* I2C interface enable. */
+
+#define I2C_CONCLR_AAC 0x04 /* Assert acknowledge Clear bit. */
+#define I2C_CONCLR_SIC 0x08 /* I2C interrupt Clear bit. */
+#define I2C_CONCLR_STAC 0x20 /* START flag Clear bit. */
+#define I2C_CONCLR_ENC 0x40 /* I2C interface Disable bit. */
+
+#define I2C_WR_BIT 0x00
+#define I2C_RD_BIT 0x01
+
+#define I2C_STATE_MS_START 0x08
+#define I2C_STATE_MS_RSTART 0x10
+#define I2C_STATE_MS_SLAW_ACK 0x18
+#define I2C_STATE_MS_SLAW_NACK 0x20
+#define I2C_STATE_MS_TDAT_ACK 0x28
+#define I2C_STATE_MS_TDAT_NACK 0x30
+#define I2C_STATE_ARB_LOST 0x38
+
+#define I2C_STATE_MS_SLAR_ACK 0x40
+#define I2C_STATE_MS_SLAR_NACK 0x48
+#define I2C_STATE_MS_RDAT_ACK 0x50
+#define I2C_STATE_MS_RDAT_NACK 0x58
+
+#define I2C_STATE_BUS_ERROR 0x00
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+/**
+ * @name Configuration options
+ * @{
+ */
+
+/**
+ * @brief I2C1 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_I2C_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_I2C_IRQ_PRIORITY 3
+#endif
+
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief Type representing I2C address.
+ */
+typedef uint16_t i2caddr_t;
+
+/**
+ * @brief I2C Driver condition flags type.
+ */
+typedef uint32_t i2cflags_t;
+/**
+ * @brief Supported modes for the I2C bus.
+ */
+typedef enum {
+ I2C_STANDARD_MODE = 1,
+ I2C_FAST_MODE = 2,
+ I2C_FAST_MODE_PLUS = 3,
+} i2cmode_t;
+
+/**
+ * @brief Driver configuration structure.
+ */
+typedef struct {
+ i2cmode_t mode; /**< @brief Specifies the I2C mode. */
+ uint32_t clock_timing; /**< @brief Specifies the clock timing */
+} I2CConfig;
+
+/**
+ * @brief Type of a structure representing an I2C driver.
+ */
+typedef struct I2CDriver I2CDriver;
+
+/**
+ * @brief Structure representing an I2C driver.
+ */
+struct I2CDriver {
+ /**
+ * @brief Driver state.
+ */
+ i2cstate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const I2CConfig *config;
+ /**
+ * @brief Error flags.
+ */
+ i2cflags_t errors;
+#if I2C_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
+#if CH_USE_MUTEXES || defined(__DOXYGEN__)
+ /**
+ * @brief Mutex protecting the bus.
+ */
+ Mutex mutex;
+#elif CH_USE_SEMAPHORES
+ Semaphore semaphore;
+#endif
+#endif /* I2C_USE_MUTUAL_EXCLUSION */
+#if defined(I2C_DRIVER_EXT_FIELDS)
+ I2C_DRIVER_EXT_FIELDS
+#endif
+ /* End of the mandatory fields.*/
+ /**
+ * @brief Thread waiting for I/O completion.
+ */
+ Thread *thread;
+ /**
+ * @brief Current slave address without R/W bit.
+ */
+ i2caddr_t addr;
+ /**
+ * @brief Pointer to the transmit buffer.
+ */
+ const uint8_t *txbuf;
+ /**
+ * @brief Number of bytes to transmit.
+ */
+ size_t txbytes;
+ /**
+ * @brief Pointer to the receive buffer.
+ */
+ uint8_t *rxbuf;
+ /**
+ * @brief Number of bytes to receive.
+ */
+ size_t rxbytes;
+ /**
+ * @brief Pointer to the I2C registers block.
+ */
+ LPC_I2C_TypeDef *i2c;
+};
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/**
+ * @brief Get errors from I2C driver.
+ *
+ * @param[in] i2cp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+#define i2c_lld_get_errors(i2cp) ((i2cp)->errors)
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if !defined(__DOXYGEN__)
+extern I2CDriver I2CD1;
+#endif
+
+#endif /* !defined(__DOXYGEN__) */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void i2c_lld_init(void);
+ void i2c_lld_start(I2CDriver *i2cp);
+ void i2c_lld_stop(I2CDriver *i2cp);
+ msg_t i2c_lld_master_transmit_timeout(I2CDriver *i2cp, i2caddr_t addr,
+ const uint8_t *txbuf, size_t txbytes,
+ uint8_t *rxbuf, size_t rxbytes,
+ systime_t timeout);
+ msg_t i2c_lld_master_receive_timeout(I2CDriver *i2cp, i2caddr_t addr,
+ uint8_t *rxbuf, size_t rxbytes,
+ systime_t timeout);
+#ifdef __cplusplus
+}
+#endif
+#endif /* _I2C_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/platforms/LPC11xx/platform.mk b/os/hal/platforms/LPC11xx/platform.mk index 4f0d19547..61f2a49dd 100644 --- a/os/hal/platforms/LPC11xx/platform.mk +++ b/os/hal/platforms/LPC11xx/platform.mk @@ -1,8 +1,12 @@ # List of all the LPC11xx platform files.
PLATFORMSRC = ${CHIBIOS}/os/hal/platforms/LPC11xx/hal_lld.c \
- ${CHIBIOS}/os/hal/platforms/LPC11xx/gpt_lld.c \
${CHIBIOS}/os/hal/platforms/LPC11xx/pal_lld.c \
+ ${CHIBIOS}/os/hal/platforms/LPC11xx/ext_lld.c \
+ ${CHIBIOS}/os/hal/platforms/LPC11xx/ext_lld_isr.c \
+ ${CHIBIOS}/os/hal/platforms/LPC11xx/gpt_lld.c \
+ ${CHIBIOS}/os/hal/platforms/LPC11xx/pwm_lld.c \
${CHIBIOS}/os/hal/platforms/LPC11xx/serial_lld.c \
+ ${CHIBIOS}/os/hal/platforms/LPC11xx/i2c_lld.c \
${CHIBIOS}/os/hal/platforms/LPC11xx/spi_lld.c
# Required include directories
diff --git a/os/hal/platforms/LPC11xx/pwm_lld.c b/os/hal/platforms/LPC11xx/pwm_lld.c new file mode 100644 index 000000000..06de0bbc6 --- /dev/null +++ b/os/hal/platforms/LPC11xx/pwm_lld.c @@ -0,0 +1,407 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx PWM driver - Copyright (C) 2013 Marcin Jokel
+
+ 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 LPC11xx/pwm_lld.c
+ * @brief LPC11xx PWM subsystem low level driver header.
+ *
+ * @addtogroup PWM
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_PWM || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/**
+ * @brief PWMD1 driver identifier.
+ * @note The driver PWMD1 allocates the complex timer TIM1 when enabled.
+ */
+#if LPC11xx_PWM_USE_CT16B0 || defined(__DOXYGEN__)
+PWMDriver PWMD1;
+#endif
+
+/**
+ * @brief PWMD2 driver identifier.
+ * @note The driver PWMD2 allocates the timer TIM2 when enabled.
+ */
+#if LPC11xx_PWM_USE_CT16B1 || defined(__DOXYGEN__)
+PWMDriver PWMD2;
+#endif
+
+/**
+ * @brief PWMD3 driver identifier.
+ * @note The driver PWMD3 allocates the timer TIM3 when enabled.
+ */
+#if LPC11xx_PWM_USE_CT32B0 || defined(__DOXYGEN__)
+PWMDriver PWMD3;
+#endif
+
+/**
+ * @brief PWMD4 driver identifier.
+ * @note The driver PWMD4 allocates the timer TIM4 when enabled.
+ */
+#if LPC11xx_PWM_USE_CT32B1 || defined(__DOXYGEN__)
+PWMDriver PWMD4;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+#if LPC11xx_PWM_USE_CT16B0 || LPC11xx_PWM_USE_CT16B1 || LPC11xx_PWM_USE_CT32B0 || \
+ LPC11xx_PWM_USE_CT32B1 || defined(__DOXYGEN__)
+/**
+ * @brief Common TIM2...TIM5 IRQ handler.
+ * @note It is assumed that the various sources are only activated if the
+ * associated callback pointer is not equal to @p NULL in order to not
+ * perform an extra check in a potentially critical interrupt handler.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ */
+static void pwm_lld_serve_interrupt(PWMDriver *pwmp) {
+ uint16_t sr;
+
+ sr = pwmp->tim->IR;
+ pwmp->tim->IR = sr;
+ if ((sr & IR_MR0INT) != 0)
+ pwmp->config->channels[0].callback(pwmp);
+ if ((sr & IR_MR1INT) != 0)
+ pwmp->config->channels[1].callback(pwmp);
+ if ((sr & IR_MR3INT) != 0)
+ pwmp->config->callback(pwmp);
+}
+#endif /* STM32_PWM_USE_TIM2 || ... || STM32_PWM_USE_TIM5 */
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+#if LPC11xx_PWM_USE_CT16B0 || defined(__DOXYGEN__)
+/**
+ * @brief CT16B0 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector80) {
+
+ CH_IRQ_PROLOGUE();
+
+ pwm_lld_serve_interrupt(&PWMD1);
+
+ CH_IRQ_EPILOGUE();
+}
+
+#endif /* STM32_PWM_USE_TIM1 */
+
+#if LPC11xx_PWM_USE_CT16B1 || defined(__DOXYGEN__)
+/**
+ * @brief CT16B1 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector84) {
+
+ CH_IRQ_PROLOGUE();
+
+ pwm_lld_serve_interrupt(&PWMD2);
+
+ CH_IRQ_EPILOGUE();
+}
+#endif /* LPC11xx_PWM_USE_CT16B1 */
+
+#if LPC11xx_PWM_USE_CT32B0 || defined(__DOXYGEN__)
+/**
+ * @brief CT32B0 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector88) {
+
+ CH_IRQ_PROLOGUE();
+
+ pwm_lld_serve_interrupt(&PWMD3);
+
+ CH_IRQ_EPILOGUE();
+}
+#endif /* LPC11xx_PWM_USE_CT32B0 */
+
+#if LPC11xx_PWM_USE_CT32B1 || defined(__DOXYGEN__)
+/**
+ * @brief CT32B1 interrupt handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(Vector8C) {
+
+ CH_IRQ_PROLOGUE();
+
+ pwm_lld_serve_interrupt(&PWMD4);
+
+ CH_IRQ_EPILOGUE();
+}
+#endif /* LPC11xx_PWM_USE_CT32B1 */
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level PWM driver initialization.
+ *
+ * @notapi
+ */
+void pwm_lld_init(void) {
+
+#if LPC11xx_PWM_USE_CT16B0
+ /* Driver initialization.*/
+ pwmObjectInit(&PWMD1);
+ PWMD1.tim = LPC_TMR16B0;
+
+#if LPC11xx_PWM_USE_CT16B0_CH0
+ LPC_IOCON->PIO0_8 = 0xC2;
+#endif
+
+#if LPC11xx_PWM_USE_CT16B0_CH1
+ LPC_IOCON->PIO0_9 = 0xC2;
+#endif
+#endif
+
+#if LPC11xx_PWM_USE_CT16B1
+ /* Driver initialization.*/
+ pwmObjectInit(&PWMD2);
+ PWMD2.tim = LPC_TMR16B1;
+
+#if LPC11xx_PWM_USE_CT16B1_CH0
+ LPC_IOCON->PIO1_9 = 0xC1;
+#endif
+
+#if LPC11xx_PWM_USE_CT16B1_CH1
+ LPC_IOCON->PIO1_10 = 0xC2;
+#endif
+#endif
+
+#if LPC11xx_PWM_USE_CT32B0
+ /* Driver initialization.*/
+ pwmObjectInit(&PWMD3);
+ PWMD3.tim = LPC_TMR32B0;
+
+#if LPC11xx_PWM_USE_CT32B0_CH0
+ LPC_IOCON->PIO1_6 = 0xC2;
+#endif
+
+#if LPC11xx_PWM_USE_CT32B0_CH1
+ LPC_IOCON->PIO1_7 = 0xC2;
+#endif
+#endif
+
+#if LPC11xx_PWM_USE_CT32B1
+ /* Driver initialization.*/
+ pwmObjectInit(&PWMD4);
+ PWMD4.tim = LPC_TMR32B1;
+
+#if LPC11xx_PWM_USE_CT32B1_CH0
+ LPC_IOCON->R_PIO1_1 = 0xC3;
+#endif
+
+#if LPC11xx_PWM_USE_CT32B1_CH1
+ LPC_IOCON->R_PIO1_2 = 0xC3;
+#endif
+#endif
+}
+
+/**
+ * @brief Configures and activates the PWM peripheral.
+ * @note Starting a driver that is already in the @p PWM_READY state
+ * disables all the active channels.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_start(PWMDriver *pwmp) {
+ uint32_t pr;
+
+ if (pwmp->state == PWM_STOP) {
+ /* Clock activation and timer reset.*/
+#if LPC11xx_PWM_USE_CT16B0
+ if (&PWMD1 == pwmp) {
+ LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 7);
+ nvicEnableVector(TIMER_16_0_IRQn, LPC11xx_PWM_CT16B0_IRQ_PRIORITY);
+ }
+#endif
+#if LPC11xx_PWM_USE_CT16B1
+ if (&PWMD2 == pwmp) {
+ LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 8);
+ nvicEnableVector(TIMER_16_1_IRQn, LPC11xx_PWM_CT16B1_IRQ_PRIORITY);
+ }
+#endif
+#if LPC11xx_PWM_USE_CT32B0
+ if (&PWMD3 == pwmp) {
+ LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 9);
+ nvicEnableVector(TIMER_32_0_IRQn, LPC11xx_PWM_CT32B0_IRQ_PRIORITY);
+ }
+#endif
+#if LPC11xx_PWM_USE_CT32B1
+ if (&PWMD4 == pwmp) {
+ LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 10);
+ nvicEnableVector(TIMER_32_1_IRQn, LPC11xx_PWM_CT32B1_IRQ_PRIORITY);
+ }
+#endif
+ }
+ else {
+ /* Driver re-configuration scenario, it must be stopped first.*/
+ pwmp->tim->TCR = 0;
+ }
+
+ /* Output enables and polarities setup.*/
+ if(pwmp->config->channels[0].mode == PWM_OUTPUT_ACTIVE_LOW)
+ pwmp->tim->PWMC = (1 << 0);
+
+ if(pwmp->config->channels[1].mode == PWM_OUTPUT_ACTIVE_LOW)
+ pwmp->tim->PWMC |= (1 << 1);
+
+ /* Timer configured and started.*/
+ pr = (uint16_t)((LPC11xx_SYSCLK / pwmp->config->frequency) - 1);
+ chDbgAssert(((uint32_t)(pr + 1) * pwmp->config->frequency) == LPC11xx_SYSCLK,
+ "pwm_lld_start(), #1", "invalid frequency");
+
+ pwmp->tim->TC = 0;
+ pwmp->tim->PR = pr;
+ pwmp->tim->IR = 0xFF;
+ pwmp->tim->MCR = MCR_MR3R; /* Reset on Match3 */
+ pwmp->tim->MR3 = pwmp->config->period;
+
+ if (pwmp->config->callback != NULL)
+ pwmp->tim->MCR |= MCR_MR3I;
+
+ pwmp->tim->TCR = 1; /* Timer start */
+}
+
+/**
+ * @brief Deactivates the PWM peripheral.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_stop(PWMDriver *pwmp) {
+
+ /* If in ready state then disables the PWM clock.*/
+ if (pwmp->state == PWM_READY) {
+ pwmp->tim->TCR = 0; /* Timer disabled. */
+ pwmp->tim->MCR = 0; /* All IRQs disabled. */
+ pwmp->tim->IR = 0xFF; /* Clear eventual pending IRQs. */
+ pwmp->tim->PWMC = 0; /* PWM outputs disable. */
+
+#if LPC11xx_PWM_USE_CT16B0
+ if (&PWMD1 == pwmp) {
+ nvicDisableVector(TIMER_16_0_IRQn);
+ LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 7);
+ }
+#endif
+#if LPC11xx_PWM_USE_CT16B1
+ if (&PWMD2 == pwmp) {
+ nvicDisableVector(TIMER_16_1_IRQn);
+ LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 8);
+ }
+#endif
+#if LPC11xx_PWM_USE_CT32B0
+ if (&PWMD3 == pwmp) {
+ nvicDisableVector(TIMER_32_0_IRQn);
+ LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 9);
+ }
+#endif
+#if LPC11xx_PWM_USE_CT32B1
+ if (&PWMD4 == pwmp) {
+ nvicDisableVector(TIMER_32_1_IRQn);
+ LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 10);
+ }
+#endif
+
+ }
+}
+
+/**
+ * @brief Enables a PWM channel.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @post The channel is active using the specified configuration.
+ * @note The function has effect at the next cycle start.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1)
+ * @param[in] width PWM pulse width as clock pulses number
+ *
+ * @notapi
+ */
+void pwm_lld_enable_channel(PWMDriver *pwmp,
+ pwmchannel_t channel,
+ pwmcnt_t width) {
+
+ pwmp->tim->MCR &= ~(7 << (channel * 3));
+
+ if ( channel == 0)
+ pwmp->tim->MR0 = width; /* New duty cycle. */
+ else
+ pwmp->tim->MR1 = width; /* New duty cycle. */
+ /* If there is a callback defined for the channel then the associated
+ interrupt must be enabled.*/
+ if (pwmp->config->channels[channel].callback != NULL) {
+ pwmp->tim->IR = (1 << channel); /* Clear interrupt flag*/
+ pwmp->tim->MCR |= (1 << (channel * 3)); /* Set interrupt on selected channel */
+ }
+
+}
+
+/**
+ * @brief Disables a PWM channel.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @post The channel is disabled and its output line returned to the
+ * idle state.
+ * @note The function has effect at the next cycle start.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1)
+ *
+ * @notapi
+ */
+void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel) {
+
+ if ( channel == 0)
+ pwmp->tim->MR0 = 0;
+ else
+ pwmp->tim->MR1 = 0;
+ pwmp->tim->MCR &= ~(7 << (channel * 3));
+ pwmp->tim->IR = (1 << channel);
+}
+
+#endif /* HAL_USE_PWM */
+
+/** @} */
diff --git a/os/hal/platforms/LPC11xx/pwm_lld.h b/os/hal/platforms/LPC11xx/pwm_lld.h new file mode 100644 index 000000000..2b3a37fd1 --- /dev/null +++ b/os/hal/platforms/LPC11xx/pwm_lld.h @@ -0,0 +1,364 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+ LPC11xx PWM driver - Copyright (C) 2013 Marcin Jokel
+
+ 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 LPC11xx/pwm_lld.h
+ * @brief LPC11xx PWM subsystem low level driver header.
+ *
+ * @addtogroup PWM
+ * @{
+ */
+
+#ifndef _PWM_LLD_H_
+#define _PWM_LLD_H_
+
+#if HAL_USE_PWM || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Unsupported modes and specific modes */
+/*===========================================================================*/
+#undef PWM_OUTPUT_ACTIVE_HIGH
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+#define IR_MR0INT (1 << 0)
+#define IR_MR1INT (1 << 1)
+#define IR_MR2INT (1 << 2)
+#define IR_MR3INT (1 << 3)
+#define IR_CR0INT (1 << 4)
+#define IR_CR1INT (1 << 5)
+#define IR_CR2INT (1 << 6)
+#define IR_CR3INT (1 << 7)
+
+#define MCR_MR3I (1 << 9)
+#define MCR_MR3R (1 << 10)
+#define MCR_MR3S (1 << 11)
+/**
+ * @brief Number of PWM channels per PWM driver.
+ */
+#define PWM_CHANNELS 2
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+
+/**
+ * @brief PWMD1 driver enable switch.
+ * @details If set to @p TRUE the support for PWMD1 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT16B0) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT16B0 FALSE
+#endif
+
+/**
+ * @brief PWMD2 driver enable switch.
+ * @details If set to @p TRUE the support for PWMD2 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT16B1) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT16B1 FALSE
+#endif
+
+/**
+ * @brief PWMD3 driver enable switch.
+ * @details If set to @p TRUE the support for PWMD3 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT32B0) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT32B0 FALSE
+#endif
+
+/**
+ * @brief PWMD4 driver enable switch.
+ * @details If set to @p TRUE the support for PWMD4 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT32B1) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT32B1 FALSE
+#endif
+
+/**
+ * @brief PWMD1 Channel 0 driver enable switch.
+ * @details If set to @p TRUE PWMD1 Channel 0 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT16B0_CH0) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT16B0_CH0 FALSE
+#endif
+
+/**
+ * @brief PWMD1 Channel 1 driver enable switch.
+ * @details If set to @p TRUE PWMD1 Channel 1 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT16B0_CH1) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT16B0_CH1 FALSE
+#endif
+
+/**
+ * @brief PWMD2 Channel 0 driver enable switch.
+ * @details If set to @p TRUE PWMD2 Channel 0 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT16B1_CH0) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT16B1_CH0 FALSE
+#endif
+
+/**
+ * @brief PWMD2 Channel 1 driver enable switch.
+ * @details If set to @p TRUE PWMD2 Channel 1 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT16B1_CH1) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT16B1_CH1 FALSE
+#endif
+
+/**
+ * @brief PWMD3 Channel 0 driver enable switch.
+ * @details If set to @p TRUE PWMD3 Channel 0 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT32B0_CH0) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT32B0_CH0 FALSE
+#endif
+
+/**
+ * @brief PWMD3 Channel 1 driver enable switch.
+ * @details If set to @p TRUE PWMD3 Channel 1 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT32B0_CH1) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT32B0_CH1 FALSE
+#endif
+
+/**
+ * @brief PWMD4 Channel 0 driver enable switch.
+ * @details If set to @p TRUE PWMD4 Channel 0 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT32B1_CH0) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT32B1_CH0 FALSE
+#endif
+
+/**
+ * @brief PWMD4 Channel 1 driver enable switch.
+ * @details If set to @p TRUE PWMD4 Channel 1 is enabled.
+ * @note The default is @p FALSE.
+ */
+#if !defined(LPC11xx_PWM_USE_CT32B1_CH1) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_USE_CT32B1_CH1 FALSE
+#endif
+/**
+ * @brief PWMD1 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_PWM_CT16B0_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_CT16B0_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief PWMD2 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_PWM_CT16B1_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_CT16B1_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief PWMD3 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_PWM_CT32B0_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_CT32B0_IRQ_PRIORITY 3
+#endif
+
+/**
+ * @brief PWMD4 interrupt priority level setting.
+ */
+#if !defined(LPC11xx_PWM_CT32B1_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define LPC11xx_PWM_CT32B1_IRQ_PRIORITY 3
+#endif
+
+/*===========================================================================*/
+/* Configuration checks. */
+/*===========================================================================*/
+
+
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief PWM mode type.
+ */
+typedef uint32_t pwmmode_t;
+
+/**
+ * @brief PWM channel type.
+ */
+typedef uint8_t pwmchannel_t;
+
+/**
+ * @brief PWM counter type.
+ */
+typedef uint16_t pwmcnt_t;
+
+/**
+ * @brief PWM driver channel configuration structure.
+ */
+typedef struct {
+ /**
+ * @brief Channel active logic level.
+ */
+ pwmmode_t mode;
+ /**
+ * @brief Channel callback pointer.
+ * @note This callback is invoked on the channel compare event. If set to
+ * @p NULL then the callback is disabled.
+ */
+ pwmcallback_t callback;
+ /* End of the mandatory fields.*/
+} PWMChannelConfig;
+
+/**
+ * @brief PWM driver configuration structure.
+ */
+typedef struct {
+ /**
+ * @brief Timer clock in Hz.
+ * @note The low level can use assertions in order to catch invalid
+ * frequency specifications.
+ */
+ uint32_t frequency;
+ /**
+ * @brief PWM period in ticks.
+ * @note The low level can use assertions in order to catch invalid
+ * period specifications.
+ */
+ pwmcnt_t period;
+ /**
+ * @brief Periodic callback pointer.
+ * @note This callback is invoked on PWM counter reset. If set to
+ * @p NULL then the callback is disabled.
+ */
+ pwmcallback_t callback;
+ /**
+ * @brief Channels configurations.
+ */
+ PWMChannelConfig channels[PWM_CHANNELS];
+ /* End of the mandatory fields.*/
+
+} PWMConfig;
+
+/**
+ * @brief Structure representing a PWM driver.
+ */
+struct PWMDriver {
+ /**
+ * @brief Driver state.
+ */
+ pwmstate_t state;
+ /**
+ * @brief Current driver configuration data.
+ */
+ const PWMConfig *config;
+ /**
+ * @brief Current PWM period in ticks.
+ */
+ pwmcnt_t period;
+#if defined(PWM_DRIVER_EXT_FIELDS)
+ PWM_DRIVER_EXT_FIELDS
+#endif
+ /* End of the mandatory fields.*/
+ /**
+ * @brief Timer base clock.
+ */
+ uint32_t clock;
+ /**
+ * @brief Pointer to the TIMx registers block.
+ */
+ LPC_TMR_TypeDef *tim;
+};
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/**
+ * @brief Changes the period the PWM peripheral.
+ * @details This function changes the period of a PWM unit that has already
+ * been activated using @p pwmStart().
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @post The PWM unit period is changed to the new value.
+ * @note The function has effect at the next cycle start.
+ * @note If a period is specified that is shorter than the pulse width
+ * programmed in one of the channels then the behavior is not
+ * guaranteed.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] period new cycle time in ticks
+ *
+ * @notapi
+ */
+#define pwm_lld_change_period(pwmp, period) \
+ ((pwmp)->tim->MR3 = (period))
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if LPC11xx_PWM_USE_CT16B0 && !defined(__DOXYGEN__)
+extern PWMDriver PWMD1;
+#endif
+
+#if LPC11xx_PWM_USE_CT16B1 && !defined(__DOXYGEN__)
+extern PWMDriver PWMD2;
+#endif
+
+#if LPC11xx_PWM_USE_CT32B0 && !defined(__DOXYGEN__)
+extern PWMDriver PWMD3;
+#endif
+
+#if LPC11xx_PWM_USE_CT32B1 && !defined(__DOXYGEN__)
+extern PWMDriver PWMD4;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void pwm_lld_init(void);
+ void pwm_lld_start(PWMDriver *pwmp);
+ void pwm_lld_stop(PWMDriver *pwmp);
+ void pwm_lld_enable_channel(PWMDriver *pwmp,
+ pwmchannel_t channel,
+ pwmcnt_t width);
+ void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_PWM */
+
+#endif /* _PWM_LLD_H_ */
+
+/** @} */
diff --git a/os/ports/GCC/ARMCMx/LPC11xx/ld/LPC11C24.ld b/os/ports/GCC/ARMCMx/LPC11xx/ld/LPC11C24.ld new file mode 100644 index 000000000..1022db9ab --- /dev/null +++ b/os/ports/GCC/ARMCMx/LPC11xx/ld/LPC11C24.ld @@ -0,0 +1,152 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011,2012,2013 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * LPC11C24 memory setup.
+ */
+__main_stack_size__ = 0x0200;
+__process_stack_size__ = 0x0200;
+
+MEMORY
+{
+ flash : org = 0x00000000, len = 32k
+ ram : org = 0x10000000, len = 8k
+}
+
+__ram_start__ = ORIGIN(ram);
+__ram_size__ = LENGTH(ram);
+__ram_end__ = __ram_start__ + __ram_size__;
+
+ENTRY(ResetHandler)
+
+SECTIONS
+{
+ . = 0;
+ _text = .;
+
+ startup : ALIGN(16) SUBALIGN(16)
+ {
+ KEEP(*(vectors))
+ } > flash
+
+ constructors : ALIGN(4) SUBALIGN(4)
+ {
+ PROVIDE(__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE(__init_array_end = .);
+ } > flash
+
+ destructors : ALIGN(4) SUBALIGN(4)
+ {
+ PROVIDE(__fini_array_start = .);
+ KEEP(*(.fini_array))
+ KEEP(*(SORT(.fini_array.*)))
+ PROVIDE(__fini_array_end = .);
+ } > flash
+
+ .text : ALIGN(16) SUBALIGN(16)
+ {
+ *(.text.startup.*)
+ *(.text)
+ *(.text.*)
+ *(.rodata)
+ *(.rodata.*)
+ *(.glue_7t)
+ *(.glue_7)
+ *(.gcc*)
+ } > flash
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > flash
+
+ .ARM.exidx : {
+ PROVIDE(__exidx_start = .);
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ PROVIDE(__exidx_end = .);
+ } > flash
+
+ .eh_frame_hdr :
+ {
+ *(.eh_frame_hdr)
+ } > flash
+
+ .eh_frame : ONLY_IF_RO
+ {
+ *(.eh_frame)
+ } > flash
+
+ .textalign : ONLY_IF_RO
+ {
+ . = ALIGN(8);
+ } > flash
+
+ _etext = .;
+ _textdata = _etext;
+
+ .stacks :
+ {
+ . = ALIGN(8);
+ __main_stack_base__ = .;
+ . += __main_stack_size__;
+ . = ALIGN(8);
+ __main_stack_end__ = .;
+ __process_stack_base__ = .;
+ __main_thread_stack_base__ = .;
+ . += __process_stack_size__;
+ . = ALIGN(8);
+ __process_stack_end__ = .;
+ __main_thread_stack_end__ = .;
+ } > ram
+
+ .data :
+ {
+ . = ALIGN(4);
+ PROVIDE(_data = .);
+ *(.data)
+ . = ALIGN(4);
+ *(.data.*)
+ . = ALIGN(4);
+ *(.ramtext)
+ . = ALIGN(4);
+ PROVIDE(_edata = .);
+ } > ram AT > flash
+
+ .bss :
+ {
+ . = ALIGN(4);
+ PROVIDE(_bss_start = .);
+ *(.bss)
+ . = ALIGN(4);
+ *(.bss.*)
+ . = ALIGN(4);
+ *(COMMON)
+ . = ALIGN(4);
+ PROVIDE(_bss_end = .);
+ } > ram
+}
+
+PROVIDE(end = .);
+_end = .;
+
+__heap_base__ = _end;
+__heap_end__ = __ram_end__;
|