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Dependents: trms_helloworld AnalogIn_Diff_helloworld
Fork of AnalogIn_Diff by
Diff: AnalohIn_Diff.cpp
- Revision:
- 5:c24df4d64aa1
- Parent:
- 4:a833fa5cce1e
- Child:
- 6:f39be15f056c
--- a/AnalohIn_Diff.cpp Tue Sep 22 13:40:55 2015 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,88 +0,0 @@
-/* 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 "AnalogIn_Diff.h"
-
-#if FSL_FEATURE_ADC_HAS_DIFF_MODE
-
-
-
-AnalogIn_Diff::AnalogIn_Diff(int adc_ch)
-{
-
- const uint32_t temp[] = ADC_BASE_ADDRS;
- for (int i = 0; i < sizeof(temp) / sizeof(temp[0]); i++)
- adc_addrs[i] = temp[i];
-
-
- instance=(adc_ch>>1)&1;
- chnNum=(adc_ch>>0)&1;
-
-
- 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], kAdcResolutionBitOfDiffModeAs16);
- ADC_HAL_SetContinuousConvCmd(adc_addrs[instance], false);//false
- ADC_HAL_SetHwTriggerCmd(adc_addrs[instance], false); /* sw trigger */
- ADC_HAL_SetHwAverageCmd(adc_addrs[instance], false); /*Average*/
- //ADC_HAL_SetHwAverageCmd(adc_addrs[instance], true);
- //ADC_HAL_SetHwAverageMode(adc_addrs[instance], kAdcHwAverageCountOf32);
- ADC_HAL_SetChnMuxMode(adc_addrs[instance], kAdcChnMuxOfB); /* only B channels are avail */
-
-}
-
-AnalogIn_Diff::~AnalogIn_Diff() { }
-
-void AnalogIn_Diff::test (int x)
-{
- printf("\r\n %i: 0x%08lx\r\n",x,(long)adc_addrs[instance]);
-}
-
-
-int16_t AnalogIn_Diff::read_raws16() // Returns a 16bit signed integer
-{
- /* sw trigger (SC1A) */
-
- ADC_HAL_ConfigChn(adc_addrs[instance], 0, false, true, chnNum);
- while (!ADC_HAL_GetChnConvCompletedCmd(adc_addrs[instance], 0));
- return ADC_HAL_GetChnConvValueRAW(adc_addrs[instance], 0);
-
-}
-
-float AnalogIn_Diff::read()
-{
- int16_t value = read_raws16();
- return (float)value * (1.0f / (float)0xFFFF);
-}
-
-#endif // FSL_FEATURE_ADC_HAS_DIFF_MODE

ADC DIFF K64F