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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_K64F/analogin_api.c@149:1fb5f62b92bd, 2014-04-03 (annotated)

Committer:
mbed_official
Date:
Thu Apr 03 11:45:06 2014 +0100
Revision:
149:1fb5f62b92bd
Parent:
targets/hal/TARGET_Freescale/TARGET_KSDK_MCUS/TARGET_K64F/analogin_api.c@146:f64d43ff0c18
Child:
151:7a600087bf72
Synchronized with git revision 220c0bb39ceee40016e1e86350c058963d01ed42



Full URL: https://github.com/mbedmicro/mbed/commit/220c0bb39ceee40016e1e86350c058963d01ed42/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 146:f64d43ff0c18 1 /* mbed Microcontroller Library
mbed_official 146:f64d43ff0c18 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 146:f64d43ff0c18 3 *
mbed_official 146:f64d43ff0c18 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 146:f64d43ff0c18 5 * you may not use this file except in compliance with the License.
mbed_official 146:f64d43ff0c18 6 * You may obtain a copy of the License at
mbed_official 146:f64d43ff0c18 7 *
mbed_official 146:f64d43ff0c18 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 146:f64d43ff0c18 9 *
mbed_official 146:f64d43ff0c18 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 146:f64d43ff0c18 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 146:f64d43ff0c18 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 146:f64d43ff0c18 13 * See the License for the specific language governing permissions and
mbed_official 146:f64d43ff0c18 14 * limitations under the License.
mbed_official 146:f64d43ff0c18 15 */
mbed_official 146:f64d43ff0c18 16 #include "analogin_api.h"
mbed_official 146:f64d43ff0c18 17
mbed_official 146:f64d43ff0c18 18 #include "cmsis.h"
mbed_official 146:f64d43ff0c18 19 #include "pinmap.h"
mbed_official 146:f64d43ff0c18 20 #include "error.h"
mbed_official 146:f64d43ff0c18 21 #include "PeripheralNames.h"
mbed_official 146:f64d43ff0c18 22 #include "fsl_adc_hal.h"
mbed_official 146:f64d43ff0c18 23 #include "fsl_clock_manager.h"
mbed_official 146:f64d43ff0c18 24
mbed_official 146:f64d43ff0c18 25 #define MAX_FADC 6000000
mbed_official 146:f64d43ff0c18 26
mbed_official 146:f64d43ff0c18 27 static const PinMap PinMap_ADC[] = {
mbed_official 146:f64d43ff0c18 28 {PTC2, ADC0_SE4b, 0},
mbed_official 146:f64d43ff0c18 29 {PTC8, ADC1_SE4b, 0},
mbed_official 146:f64d43ff0c18 30 {PTC9, ADC0_SE5b, 0},
mbed_official 146:f64d43ff0c18 31 {PTD1, ADC0_SE5b, 0},
mbed_official 146:f64d43ff0c18 32 {PTC10, ADC0_SE6b, 0},
mbed_official 146:f64d43ff0c18 33 {PTD5, ADC0_SE6b, 0},
mbed_official 146:f64d43ff0c18 34 {PTC11, ADC0_SE7b, 0},
mbed_official 146:f64d43ff0c18 35 {PTD7, ADC0_SE7b, 0},
mbed_official 146:f64d43ff0c18 36 {PTB0 , ADC0_SE8 , 0},
mbed_official 146:f64d43ff0c18 37 {PTB1 , ADC0_SE9 , 0},
mbed_official 146:f64d43ff0c18 38 {PTB2 , ADC0_SE12, 0},
mbed_official 146:f64d43ff0c18 39 {PTB3 , ADC0_SE13, 0},
mbed_official 146:f64d43ff0c18 40 {PTC0 , ADC0_SE14, 0},
mbed_official 146:f64d43ff0c18 41 {PTB10, ADC1_SE14, 0},
mbed_official 146:f64d43ff0c18 42 {PTB11, ADC1_SE15, 0},
mbed_official 146:f64d43ff0c18 43 {PTC1 , ADC0_SE15, 0},
mbed_official 146:f64d43ff0c18 44 {PTE24, ADC0_SE17, 0},
mbed_official 146:f64d43ff0c18 45 {PTA17, ADC1_SE17, 0},
mbed_official 146:f64d43ff0c18 46 {PTE25, ADC0_SE18, 0},
mbed_official 146:f64d43ff0c18 47 {NC , NC , 0}
mbed_official 146:f64d43ff0c18 48 };
mbed_official 146:f64d43ff0c18 49
mbed_official 146:f64d43ff0c18 50 void analogin_init(analogin_t *obj, PinName pin) {
mbed_official 146:f64d43ff0c18 51 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 146:f64d43ff0c18 52 if (obj->adc == (ADCName)NC) {
mbed_official 146:f64d43ff0c18 53 error("ADC pin mapping failed");
mbed_official 146:f64d43ff0c18 54 }
mbed_official 146:f64d43ff0c18 55 uint32_t instance = obj->adc >> ADC_INSTANCE_SHIFT;
mbed_official 146:f64d43ff0c18 56
mbed_official 146:f64d43ff0c18 57 clock_manager_set_gate(kClockModuleADC, instance, true);
mbed_official 146:f64d43ff0c18 58
mbed_official 146:f64d43ff0c18 59 uint32_t bus_clock;
mbed_official 146:f64d43ff0c18 60 clock_manager_get_frequency(kBusClock, &bus_clock);
mbed_official 146:f64d43ff0c18 61 uint32_t clkdiv;
mbed_official 146:f64d43ff0c18 62 for (clkdiv = 0; clkdiv < 4; clkdiv++) {
mbed_official 146:f64d43ff0c18 63 if ((bus_clock >> clkdiv) <= MAX_FADC)
mbed_official 146:f64d43ff0c18 64 break;
mbed_official 146:f64d43ff0c18 65 }
mbed_official 146:f64d43ff0c18 66 if (clkdiv == 4) {//Set max div
mbed_official 146:f64d43ff0c18 67 clkdiv = 0x7;
mbed_official 146:f64d43ff0c18 68 }
mbed_official 146:f64d43ff0c18 69
mbed_official 146:f64d43ff0c18 70 adc_hal_set_clock_source_mode(instance, (adc_clock_source_mode_t)(clkdiv >> 2));
mbed_official 146:f64d43ff0c18 71 adc_hal_set_clock_divider_mode(instance, (adc_clock_divider_mode_t)(clkdiv & 0x3));
mbed_official 146:f64d43ff0c18 72 adc_hal_set_reference_voltage_mode(instance, kAdcVoltageVref);
mbed_official 146:f64d43ff0c18 73 adc_hal_set_resolution_mode(instance, kAdcSingleDiff16);
mbed_official 146:f64d43ff0c18 74 adc_hal_configure_continuous_conversion(instance, false);
mbed_official 146:f64d43ff0c18 75
mbed_official 146:f64d43ff0c18 76 adc_group_mux_mode_t mode = (obj->adc & (1 << ADC_B_CHANNEL_SHIFT)) ?
mbed_official 146:f64d43ff0c18 77 kAdcChannelMuxB : kAdcChannelMuxA;
mbed_official 146:f64d43ff0c18 78 adc_hal_disable(instance, mode);
mbed_official 146:f64d43ff0c18 79 adc_hal_set_group_mux(instance, mode);
mbed_official 146:f64d43ff0c18 80 adc_hal_enable(instance, mode, (adc_channel_mode_t)(obj->adc & 0xF), false);
mbed_official 146:f64d43ff0c18 81 }
mbed_official 146:f64d43ff0c18 82
mbed_official 146:f64d43ff0c18 83 uint16_t analogin_read_u16(analogin_t *obj) {
mbed_official 146:f64d43ff0c18 84 uint32_t instance = obj->adc >> ADC_INSTANCE_SHIFT;
mbed_official 146:f64d43ff0c18 85 adc_group_mux_mode_t mode = (obj->adc & (1 << ADC_B_CHANNEL_SHIFT)) ?
mbed_official 146:f64d43ff0c18 86 kAdcChannelMuxB : kAdcChannelMuxA;
mbed_official 146:f64d43ff0c18 87 adc_hal_enable(instance, mode, (adc_channel_mode_t)(obj->adc & 0xF), false);
mbed_official 146:f64d43ff0c18 88 while (!adc_hal_is_conversion_completed(instance, mode));
mbed_official 146:f64d43ff0c18 89 return adc_hal_get_conversion_value(instance, mode);
mbed_official 146:f64d43ff0c18 90 }
mbed_official 146:f64d43ff0c18 91
mbed_official 146:f64d43ff0c18 92 float analogin_read(analogin_t *obj) {
mbed_official 146:f64d43ff0c18 93 uint16_t value = analogin_read_u16(obj);
mbed_official 146:f64d43ff0c18 94 return (float)value * (1.0f / (float)0xFFFF);
mbed_official 146:f64d43ff0c18 95 }
mbed_official 146:f64d43ff0c18 96