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targets/hal/TARGET_Freescale/TARGET_KSDK_MCUS/TARGET_K64F/analogin_api.c@146:f64d43ff0c18, 2014-04-02 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Apr 02 21:00:08 2014 +0100
- Revision:
- 146:f64d43ff0c18
Synchronized with git revision d537c51d26da35e031d537f7fc90380fc74cb207
Full URL: https://github.com/mbedmicro/mbed/commit/d537c51d26da35e031d537f7fc90380fc74cb207/
target K64F
Who changed what in which revision?
User | Revision | Line number | New 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 |