Merge commit '1fe4406f374291ab2e86e95a97341fd9c475fcb8'

[qmk_firmware.git] / tmk_core / tool / mbed / mbed-sdk / libraries / mbed / targets / hal / TARGET_Freescale / TARGET_KPSDK_MCUS / analogin_api.c

diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/analogin_api.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/analogin_api.c
new file mode 100644 (file)
index 0000000..67f5fdd
--- /dev/null
+++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/analogin_api.c
@@ -0,0 +1,79 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * 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.
+ */
+#include "mbed_assert.h"
+#include "analogin_api.h"
+
+#if DEVICE_ANALOGIN
+
+#include "cmsis.h"
+#include "pinmap.h"
+#include "PeripheralNames.h"
+#include "fsl_adc_hal.h"
+#include "fsl_clock_manager.h"
+#include "PeripheralPins.h"
+#include "fsl_device_registers.h"
+
+#define MAX_FADC 6000000
+
+void analogin_init(analogin_t *obj, PinName pin) {
+    obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
+    MBED_ASSERT(obj->adc != (ADCName)NC);
+
+    uint32_t instance = obj->adc >> ADC_INSTANCE_SHIFT;
+    uint32_t adc_addrs[] = ADC_BASE_ADDRS;
+
+    CLOCK_SYS_EnableAdcClock(instance);
+
+    uint32_t bus_clock;
+    CLOCK_SYS_GetFreq(kBusClock, &bus_clock);
+    uint32_t clkdiv;
+    for (clkdiv = 0; clkdiv < 4; clkdiv++) {
+        if ((bus_clock >> clkdiv) <= MAX_FADC)
+            break;
+    }
+    if (clkdiv == 4) {
+        clkdiv = 0x3; //Set max div
+    }
+    /* adc is enabled/triggered when reading. */
+    ADC_HAL_Init(adc_addrs[instance]);
+    ADC_HAL_SetClkSrcMode(adc_addrs[instance], kAdcClkSrcOfBusClk);
+    ADC_HAL_SetClkDividerMode(adc_addrs[instance], (adc_clk_divider_mode_t)(clkdiv & 0x3));
+    ADC_HAL_SetRefVoltSrcMode(adc_addrs[instance], kAdcRefVoltSrcOfVref);
+    ADC_HAL_SetResolutionMode(adc_addrs[instance], kAdcResolutionBitOfSingleEndAs16);
+    ADC_HAL_SetContinuousConvCmd(adc_addrs[instance], false);
+    ADC_HAL_SetHwTriggerCmd(adc_addrs[instance], false); /* sw trigger */
+    ADC_HAL_SetHwAverageCmd(adc_addrs[instance], true);
+    ADC_HAL_SetHwAverageMode(adc_addrs[instance], kAdcHwAverageCountOf4);
+    ADC_HAL_SetChnMuxMode(adc_addrs[instance], kAdcChnMuxOfB); /* only B channels are avail */
+
+    pinmap_pinout(pin, PinMap_ADC);
+}
+
+uint16_t analogin_read_u16(analogin_t *obj) {
+    uint32_t instance = obj->adc >> ADC_INSTANCE_SHIFT;
+    uint32_t adc_addrs[] = ADC_BASE_ADDRS;
+    /* sw trigger (SC1A) */
+    ADC_HAL_ConfigChn(adc_addrs[instance], 0, false, false, obj->adc & 0xF);
+    while (!ADC_HAL_GetChnConvCompletedCmd(adc_addrs[instance], 0));
+    return ADC_HAL_GetChnConvValueRAW(adc_addrs[instance], 0);
+}
+
+float analogin_read(analogin_t *obj) {
+    uint16_t value = analogin_read_u16(obj);
+    return (float)value * (1.0f / (float)0xFFFF);
+}
+
+#endif