diff options
Diffstat (limited to 'os/hal/platforms/LPC11xx/ext_lld_isr.c')
| -rw-r--r-- | os/hal/platforms/LPC11xx/ext_lld_isr.c | 176 |
1 files changed, 176 insertions, 0 deletions
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 */
+
+/** @} */
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