1 files changed, 110 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F3XX/analogout_api.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F3XX/analogout_api.c
new file mode 100644
index 0000000000..9de3c92f51
--- /dev/null
+++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F3XX/analogout_api.c
@@ -0,0 +1,110 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2014, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * 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 "mbed_assert.h"
+#include "analogout_api.h"
+
+#if DEVICE_ANALOGOUT
+
+#include "cmsis.h"
+#include "pinmap.h"
+
+#define RANGE_12BIT (0xFFF)
+
+static const PinMap PinMap_DAC[] = {
+    {PA_4, DAC_1, STM_PIN_DATA(GPIO_Mode_AN, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF)}, // DAC_OUT1
+    {NC,   NC,    0}
+};
+
+void analogout_init(dac_t *obj, PinName pin) {
+    DAC_TypeDef *dac;
+    DAC_InitTypeDef DAC_InitStructure;
+
+    // Get the peripheral name (DAC_1, ...) from the pin and assign it to the object
+    obj->dac = (DACName)pinmap_peripheral(pin, PinMap_DAC);
+    MBED_ASSERT(obj->dac == (DACName)NC);
+
+    dac = (DAC_TypeDef *)(obj->dac);
+
+    // Configure GPIO
+    pinmap_pinout(pin, PinMap_DAC);
+
+    // Save the channel for the write and read functions
+    obj->channel = pin;
+
+    // Enable DAC clock
+    RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
+
+    // Configure and enable DAC channel
+    DAC_StructInit(&DAC_InitStructure);
+    DAC_Init(dac, DAC_Channel_1, &DAC_InitStructure);
+    DAC_Cmd(dac, DAC_Channel_1, ENABLE);
+
+    analogout_write_u16(obj, 0);
+}
+
+void analogout_free(dac_t *obj) {
+}
+
+static inline void dac_write(dac_t *obj, uint16_t value) {
+    DAC_TypeDef *dac = (DAC_TypeDef *)(obj->dac);
+    DAC_SetChannel1Data(dac, DAC_Align_12b_R, value);
+}
+
+static inline int dac_read(dac_t *obj) {
+    DAC_TypeDef *dac = (DAC_TypeDef *)(obj->dac);
+    return (int)DAC_GetDataOutputValue(dac, DAC_Channel_1);
+}
+
+void analogout_write(dac_t *obj, float value) {
+    if (value < 0.0f) {
+        dac_write(obj, 0); // Min value
+    } else if (value > 1.0f) {
+        dac_write(obj, (uint16_t)RANGE_12BIT); // Max value
+    } else {
+        dac_write(obj, (uint16_t)(value * (float)RANGE_12BIT));
+    }
+}
+
+void analogout_write_u16(dac_t *obj, uint16_t value) {
+    if (value > (uint16_t)RANGE_12BIT) {
+        dac_write(obj, (uint16_t)RANGE_12BIT); // Max value
+    } else {
+        dac_write(obj, value);
+    }
+}
+
+float analogout_read(dac_t *obj) {
+    uint32_t value = dac_read(obj);
+    return (float)value * (1.0f / (float)RANGE_12BIT);
+}
+
+uint16_t analogout_read_u16(dac_t *obj) {
+    return (uint16_t)dac_read(obj);
+}
+
+#endif // DEVICE_ANALOGOUT