diff options
Diffstat (limited to 'os/hal/ports/AVR/XMEGA/LLD/DACv1/hal_dac_lld.h')
| -rw-r--r-- | os/hal/ports/AVR/XMEGA/LLD/DACv1/hal_dac_lld.h | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/os/hal/ports/AVR/XMEGA/LLD/DACv1/hal_dac_lld.h b/os/hal/ports/AVR/XMEGA/LLD/DACv1/hal_dac_lld.h new file mode 100644 index 000000000..5b22991c0 --- /dev/null +++ b/os/hal/ports/AVR/XMEGA/LLD/DACv1/hal_dac_lld.h @@ -0,0 +1,268 @@ +/*
+ ChibiOS - Copyright (C) 2016..2018 Theodore Ateba
+
+ 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 hal_dac_lld.h
+ * @brief AVR DAC subsystem low level driver header.
+ *
+ * @addtogroup DAC
+ * @{
+ */
+
+#ifndef HAL_DAC_LLD_H
+#define HAL_DAC_LLD_H
+
+#if HAL_USE_DAC || defined(__DOXYGEN__)
+
+/*==========================================================================*/
+/* Driver constants. */
+/*==========================================================================*/
+
+/**
+ * @brief Maximum number of DAC channels per unit.
+ */
+#define DAC_MAX_CHANNELS 2
+
+/*==========================================================================*/
+/* Driver pre-compile time settings. */
+/*==========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief DAC1 CH1 driver enable switch.
+ * @details If set to @p TRUE the support for DAC1 channel 1 is included.
+ * @note The default is @p FALSE.
+ */
+#if !defined(AVR_DAC_USE_DAC1) || defined(__DOXYGEN__)
+#define AVR_DAC_USE_DAC1 FALSE
+#endif
+/** @} */
+
+/*==========================================================================*/
+/* Derived constants and error checks. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* Driver data structures and types. */
+/*==========================================================================*/
+
+/**
+ * @brief DAC channel identifier.
+ */
+typedef enum {
+ DAC_CHANNEL0 = 0, /**< DAC channel 0. */
+ DAC_CHANNEL1 = 1, /**< DAC channel 1. */
+} dacchan_t;
+
+/**
+ * @brief DAC channel selection.
+ */
+typedef enum {
+ DAC_CH_SEL0 = 0, /**< DAC single operation on channel 0. */
+ DAC_CH_SEL1 = 1, /**< DAC single operation on channel 1. */
+ DAC_CH_DUAL = 2, /**< DAC dual channel opration. */
+} dacchansel_t;
+
+/**
+ * @brief DAC voltage reference selection.
+ */
+typedef enum {
+ DAC_REFSEL_INT1V = 0, /**< DAC reference is the internal 1V. */
+ DAC_REFSEL_AVCC = 1, /**< DAC reference is the analog voltage. */
+ DAC_REFSEL_AREFA = 2, /**< DAC reference is the analog voltage on PORTA. */
+ DAC_REFSEL_AREFB = 3, /**< DAC reference is the analog voltage on PORTB. */
+} dacrefsel_t;
+
+/**
+ * @brief DAC operation mode (Single/Dual).
+ */
+typedef enum {
+ DAC_OPMODE_SINGLE = 0, /**< DAC is use in single operation mode. */
+ DAC_OPMODE_DUAL = 1, /**< DAC is use in dual operation mode. */
+} dacopmode_t;
+
+/**
+ * @brief DAC alignment mode(Right/Left).
+ */
+typedef enum {
+ DAC_AJUST_12BIT_RIGHT = 0, /**< DAC right ajusted value. */
+ DAC_AJUST_12BIT_LEFT = 1, /**< DAC left ajusted value. */
+} dacajustmode_t;
+
+/**
+ * @brief Possible DAC trigger mode during conversion.
+ */
+typedef enum {
+ DAC_TRIG_ON_DATAREG = 0, /**< DAC triggered by data register. */
+ DAC_TRIG_ON_EVENT = 1, /**< DAC triggered by incoming event system. */
+} dactrigmode_t;
+
+/**
+ * @brief Type of a DAC channel index.
+ */
+typedef uint8_t dacchannel_t;
+
+/**
+ * @brief Type of a structure representing an DAC driver.
+ */
+typedef struct DACDriver DACDriver;
+
+/**
+ * @brief Type representing a DAC sample.
+ */
+typedef uint16_t dacsample_t;
+
+/**
+ * @brief Possible DAC failure causes.
+ * @note Error codes are architecture dependent and should not relied
+ * upon.
+ */
+typedef enum {
+ DAC_ERR_DMAFAILURE = 0, /**< DMA operations failure. */
+ DAC_ERR_UNDERFLOW = 1 /**< DAC overflow condition. */
+} dacerror_t;
+
+/**
+ * @brief DAC notification callback type.
+ *
+ * @param[in] dacp pointer to the @p DACDriver object triggering the
+ * @param[in] buffer pointer to the next semi-buffer to be filled
+ * @param[in] n number of buffer rows available starting from @p buffer
+ * callback
+ */
+typedef void (*daccallback_t)(DACDriver *dacp, dacsample_t *buffer, size_t n);
+
+/**
+ * @brief DAC error callback type.
+ *
+ * @param[in] dacp pointer to the @p DACDriver object triggering the
+ * callback
+ * @param[in] err DAC error code
+ */
+typedef void (*dacerrorcallback_t)(DACDriver *dacp, dacerror_t err);
+
+/**
+ * @brief DAC Conversion group structure.
+ */
+typedef struct {
+ /**
+ * @brief Number of DAC channels.
+ */
+ uint32_t num_channels;
+ /**
+ * @brief Operation complete callback or @p NULL.
+ */
+ daccallback_t end_cb;
+ /**
+ * @brief Error handling callback or @p NULL.
+ */
+ dacerrorcallback_t error_cb;
+ /* End of the mandatory fields. */
+} DACConversionGroup;
+
+/**
+ * @brief Driver configuration structure.
+ */
+typedef struct {
+ dacchan_t ch; /* DAC channel id. */
+ dactrigmode_t tm; /* register write/event trigger. */
+ dacopmode_t om; /* DAC operation mode. */
+ dacajustmode_t da; /* DAC (left/rigth) ajustement. */
+ dacrefsel_t vr; /* DAC voltage reference. */
+ /* End of the mandatory fields. */
+} DACConfig;
+
+/**
+ * @brief Structure representing a DAC driver.
+ */
+struct DACDriver {
+ /**
+ * @brief Driver state.
+ */
+ dacstate_t state;
+ /**
+ * @brief Conversion group.
+ */
+ const DACConversionGroup *grpp;
+ /**
+ * @brief Samples buffer pointer.
+ */
+ dacsample_t *samples;
+ /**
+ * @brief Samples buffer size.
+ */
+ uint16_t depth;
+ /**
+ * @brief Current configuration data.
+ */
+ const DACConfig *config;
+#if DAC_USE_WAIT || defined(__DOXYGEN__)
+ /**
+ * @brief Waiting thread.
+ */
+ thread_reference_t thread;
+#endif /* DAC_USE_WAIT */
+#if DAC_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
+ /**
+ * @brief Mutex protecting the bus.
+ */
+ mutex_t mutex;
+#endif /* DAC_USE_MUTUAL_EXCLUSION */
+#if defined(DAC_DRIVER_EXT_FIELDS)
+ DAC_DRIVER_EXT_FIELDS
+#endif
+ /* End of the mandatory fields. */
+ /**
+ * @brief Pointer to the DAC module block.
+ */
+ DAC_t *dacblock;
+};
+
+/*==========================================================================*/
+/* Driver macros. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* External declarations. */
+/*==========================================================================*/
+
+#if AVR_DAC_USE_DAC1 && !defined(__DOXYGEN__)
+extern DACDriver DACD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void dac_lld_init(void);
+ void dac_lld_start(DACDriver *dacp);
+ void dac_lld_stop(DACDriver *dacp);
+ void dac_lld_put_channel(DACDriver *dacp,
+ dacchannel_t channel,
+ dacsample_t sample);
+ void dac_lld_start_conversion(DACDriver *dacp);
+ void dac_lld_stop_conversion(DACDriver *dacp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_DAC */
+
+#endif /* HAL_DAC_LLD_H */
+
+/** @} */
|