summaryrefslogtreecommitdiffhomepage
path: root/drivers/fsl_dac.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/fsl_dac.c')
-rw-r--r--drivers/fsl_dac.c230
1 files changed, 230 insertions, 0 deletions
diff --git a/drivers/fsl_dac.c b/drivers/fsl_dac.c
new file mode 100644
index 0000000..74ac6eb
--- /dev/null
+++ b/drivers/fsl_dac.c
@@ -0,0 +1,230 @@
+/*
+ * The Clear BSD License
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * Copyright 2016-2017 NXP
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted (subject to the limitations in the disclaimer below) provided
+ * that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ * of conditions and the following disclaimer.
+ *
+ * o Redistributions in binary form must reproduce the above copyright notice, this
+ * list of conditions and the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ *
+ * o Neither the name of the copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "fsl_dac.h"
+
+/* Component ID definition, used by tools. */
+#ifndef FSL_COMPONENT_ID
+#define FSL_COMPONENT_ID "platform.drivers.dac"
+#endif
+
+
+/*******************************************************************************
+ * Prototypes
+ ******************************************************************************/
+/*!
+ * @brief Get instance number for DAC module.
+ *
+ * @param base DAC peripheral base address
+ */
+static uint32_t DAC_GetInstance(DAC_Type *base);
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+/*! @brief Pointers to DAC bases for each instance. */
+static DAC_Type *const s_dacBases[] = DAC_BASE_PTRS;
+#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
+/*! @brief Pointers to DAC clocks for each instance. */
+static const clock_ip_name_t s_dacClocks[] = DAC_CLOCKS;
+#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
+
+/*******************************************************************************
+ * Codes
+ ******************************************************************************/
+static uint32_t DAC_GetInstance(DAC_Type *base)
+{
+ uint32_t instance;
+
+ /* Find the instance index from base address mappings. */
+ for (instance = 0; instance < ARRAY_SIZE(s_dacBases); instance++)
+ {
+ if (s_dacBases[instance] == base)
+ {
+ break;
+ }
+ }
+
+ assert(instance < ARRAY_SIZE(s_dacBases));
+
+ return instance;
+}
+
+void DAC_Init(DAC_Type *base, const dac_config_t *config)
+{
+ assert(NULL != config);
+
+ uint8_t tmp8;
+
+#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
+ /* Enable the clock. */
+ CLOCK_EnableClock(s_dacClocks[DAC_GetInstance(base)]);
+#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
+
+ /* Configure. */
+ /* DACx_C0. */
+ tmp8 = base->C0 & ~(DAC_C0_DACRFS_MASK | DAC_C0_LPEN_MASK);
+ if (kDAC_ReferenceVoltageSourceVref2 == config->referenceVoltageSource)
+ {
+ tmp8 |= DAC_C0_DACRFS_MASK;
+ }
+ if (config->enableLowPowerMode)
+ {
+ tmp8 |= DAC_C0_LPEN_MASK;
+ }
+ base->C0 = tmp8;
+
+ /* DAC_Enable(base, true); */
+ /* Tip: The DAC output can be enabled till then after user sets their own available data in application. */
+}
+
+void DAC_Deinit(DAC_Type *base)
+{
+ DAC_Enable(base, false);
+
+#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
+ /* Disable the clock. */
+ CLOCK_DisableClock(s_dacClocks[DAC_GetInstance(base)]);
+#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
+}
+
+void DAC_GetDefaultConfig(dac_config_t *config)
+{
+ assert(NULL != config);
+
+ config->referenceVoltageSource = kDAC_ReferenceVoltageSourceVref2;
+ config->enableLowPowerMode = false;
+}
+
+void DAC_SetBufferConfig(DAC_Type *base, const dac_buffer_config_t *config)
+{
+ assert(NULL != config);
+
+ uint8_t tmp8;
+
+ /* DACx_C0. */
+ tmp8 = base->C0 & ~(DAC_C0_DACTRGSEL_MASK);
+ if (kDAC_BufferTriggerBySoftwareMode == config->triggerMode)
+ {
+ tmp8 |= DAC_C0_DACTRGSEL_MASK;
+ }
+ base->C0 = tmp8;
+
+ /* DACx_C1. */
+ tmp8 = base->C1 &
+ ~(
+#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
+ DAC_C1_DACBFWM_MASK |
+#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
+ DAC_C1_DACBFMD_MASK);
+#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
+ tmp8 |= DAC_C1_DACBFWM(config->watermark);
+#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
+ tmp8 |= DAC_C1_DACBFMD(config->workMode);
+ base->C1 = tmp8;
+
+ /* DACx_C2. */
+ tmp8 = base->C2 & ~DAC_C2_DACBFUP_MASK;
+ tmp8 |= DAC_C2_DACBFUP(config->upperLimit);
+ base->C2 = tmp8;
+}
+
+void DAC_GetDefaultBufferConfig(dac_buffer_config_t *config)
+{
+ assert(NULL != config);
+
+ config->triggerMode = kDAC_BufferTriggerBySoftwareMode;
+#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION
+ config->watermark = kDAC_BufferWatermark1Word;
+#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_SELECTION */
+ config->workMode = kDAC_BufferWorkAsNormalMode;
+ config->upperLimit = DAC_DATL_COUNT - 1U;
+}
+
+void DAC_SetBufferValue(DAC_Type *base, uint8_t index, uint16_t value)
+{
+ assert(index < DAC_DATL_COUNT);
+
+ base->DAT[index].DATL = (uint8_t)(0xFFU & value); /* Low 8-bit. */
+ base->DAT[index].DATH = (uint8_t)((0xF00U & value) >> 8); /* High 4-bit. */
+}
+
+void DAC_SetBufferReadPointer(DAC_Type *base, uint8_t index)
+{
+ assert(index < DAC_DATL_COUNT);
+
+ uint8_t tmp8 = base->C2 & ~DAC_C2_DACBFRP_MASK;
+
+ tmp8 |= DAC_C2_DACBFRP(index);
+ base->C2 = tmp8;
+}
+
+void DAC_EnableBufferInterrupts(DAC_Type *base, uint32_t mask)
+{
+ mask &= (
+#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
+ DAC_C0_DACBWIEN_MASK |
+#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
+ DAC_C0_DACBTIEN_MASK | DAC_C0_DACBBIEN_MASK);
+ base->C0 |= ((uint8_t)mask); /* Write 1 to enable. */
+}
+
+void DAC_DisableBufferInterrupts(DAC_Type *base, uint32_t mask)
+{
+ mask &= (
+#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
+ DAC_C0_DACBWIEN_MASK |
+#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
+ DAC_C0_DACBTIEN_MASK | DAC_C0_DACBBIEN_MASK);
+ base->C0 &= (uint8_t)(~((uint8_t)mask)); /* Write 0 to disable. */
+}
+
+uint32_t DAC_GetBufferStatusFlags(DAC_Type *base)
+{
+ return (uint32_t)(base->SR & (
+#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
+ DAC_SR_DACBFWMF_MASK |
+#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
+ DAC_SR_DACBFRPTF_MASK | DAC_SR_DACBFRPBF_MASK));
+}
+
+void DAC_ClearBufferStatusFlags(DAC_Type *base, uint32_t mask)
+{
+ mask &= (
+#if defined(FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION) && FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION
+ DAC_SR_DACBFWMF_MASK |
+#endif /* FSL_FEATURE_DAC_HAS_WATERMARK_DETECTION */
+ DAC_SR_DACBFRPTF_MASK | DAC_SR_DACBFRPBF_MASK);
+ base->SR &= (uint8_t)(~((uint8_t)mask)); /* Write 0 to clear flags. */
+}



X-ray Engineering Services