mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
targets/TARGET_RENESAS/TARGET_RZ_A1H/analogin_api.c@169:e3b6fe271b81, 2017-07-19 (annotated)
- Committer:
- Kojto
- Date:
- Wed Jul 19 17:31:21 2017 +0100
- Revision:
- 169:e3b6fe271b81
- Parent:
- 149:156823d33999
This updates the lib to the mbed lib v 147
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
<> | 144:ef7eb2e8f9f7 | 3 | * |
<> | 144:ef7eb2e8f9f7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
<> | 144:ef7eb2e8f9f7 | 5 | * you may not use this file except in compliance with the License. |
<> | 144:ef7eb2e8f9f7 | 6 | * You may obtain a copy of the License at |
<> | 144:ef7eb2e8f9f7 | 7 | * |
<> | 144:ef7eb2e8f9f7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
<> | 144:ef7eb2e8f9f7 | 9 | * |
<> | 144:ef7eb2e8f9f7 | 10 | * Unless required by applicable law or agreed to in writing, software |
<> | 144:ef7eb2e8f9f7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
<> | 144:ef7eb2e8f9f7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
<> | 144:ef7eb2e8f9f7 | 13 | * See the License for the specific language governing permissions and |
<> | 144:ef7eb2e8f9f7 | 14 | * limitations under the License. |
<> | 144:ef7eb2e8f9f7 | 15 | */ |
<> | 144:ef7eb2e8f9f7 | 16 | #include "mbed_assert.h" |
<> | 144:ef7eb2e8f9f7 | 17 | #include "analogin_api.h" |
<> | 144:ef7eb2e8f9f7 | 18 | |
<> | 144:ef7eb2e8f9f7 | 19 | #include "cmsis.h" |
<> | 144:ef7eb2e8f9f7 | 20 | #include "pinmap.h" |
<> | 144:ef7eb2e8f9f7 | 21 | |
<> | 144:ef7eb2e8f9f7 | 22 | #include "adc_iodefine.h" |
<> | 144:ef7eb2e8f9f7 | 23 | #include "cpg_iodefine.h" |
<> | 144:ef7eb2e8f9f7 | 24 | |
<> | 144:ef7eb2e8f9f7 | 25 | #define ANALOGIN_MEDIAN_FILTER 0 |
<> | 144:ef7eb2e8f9f7 | 26 | |
<> | 144:ef7eb2e8f9f7 | 27 | static const PinMap PinMap_ADC[] = { |
<> | 144:ef7eb2e8f9f7 | 28 | {P1_8, AN0, 1}, |
<> | 144:ef7eb2e8f9f7 | 29 | {P1_9, AN1, 1}, |
<> | 144:ef7eb2e8f9f7 | 30 | {P1_10, AN2, 1}, |
<> | 144:ef7eb2e8f9f7 | 31 | {P1_11, AN3, 1}, |
<> | 144:ef7eb2e8f9f7 | 32 | {P1_12, AN4, 1}, |
<> | 144:ef7eb2e8f9f7 | 33 | {P1_13, AN5, 1}, |
<> | 144:ef7eb2e8f9f7 | 34 | {P1_14, AN6, 1}, |
<> | 144:ef7eb2e8f9f7 | 35 | {P1_15, AN7, 1}, |
<> | 144:ef7eb2e8f9f7 | 36 | {NC, NC, 0} |
<> | 144:ef7eb2e8f9f7 | 37 | }; |
<> | 144:ef7eb2e8f9f7 | 38 | |
<> | 144:ef7eb2e8f9f7 | 39 | static volatile uint16_t *ADCDR[] = { |
<> | 144:ef7eb2e8f9f7 | 40 | &ADCADDRA, |
<> | 144:ef7eb2e8f9f7 | 41 | &ADCADDRB, |
<> | 144:ef7eb2e8f9f7 | 42 | &ADCADDRC, |
<> | 144:ef7eb2e8f9f7 | 43 | &ADCADDRD, |
<> | 144:ef7eb2e8f9f7 | 44 | &ADCADDRE, |
<> | 144:ef7eb2e8f9f7 | 45 | &ADCADDRF, |
<> | 144:ef7eb2e8f9f7 | 46 | &ADCADDRG, |
<> | 144:ef7eb2e8f9f7 | 47 | &ADCADDRH, |
<> | 144:ef7eb2e8f9f7 | 48 | }; |
<> | 144:ef7eb2e8f9f7 | 49 | |
<> | 144:ef7eb2e8f9f7 | 50 | void analogin_init(analogin_t *obj, PinName pin) { |
<> | 144:ef7eb2e8f9f7 | 51 | obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC); |
<> | 144:ef7eb2e8f9f7 | 52 | MBED_ASSERT(obj->adc != (ADCName)NC); |
<> | 144:ef7eb2e8f9f7 | 53 | |
<> | 144:ef7eb2e8f9f7 | 54 | CPGSTBCR3 &= ~(1 << 1); |
<> | 144:ef7eb2e8f9f7 | 55 | CPGSTBCR6 &= ~(1 << 7); |
<> | 144:ef7eb2e8f9f7 | 56 | |
<> | 144:ef7eb2e8f9f7 | 57 | // 15: ADF 14: ADIE 13: ADST, [12:9] TRGS..0 |
<> | 144:ef7eb2e8f9f7 | 58 | // [8:6] CKS 010 :: 340tclk |
<> | 144:ef7eb2e8f9f7 | 59 | // [5:3] MDS 000 :: single mode |
<> | 144:ef7eb2e8f9f7 | 60 | // [2:0] CH 000 :: AN0 |
<> | 144:ef7eb2e8f9f7 | 61 | ADCADCSR = 0x0080; |
<> | 144:ef7eb2e8f9f7 | 62 | |
<> | 144:ef7eb2e8f9f7 | 63 | pinmap_pinout(pin, PinMap_ADC); |
<> | 144:ef7eb2e8f9f7 | 64 | } |
<> | 144:ef7eb2e8f9f7 | 65 | |
<> | 144:ef7eb2e8f9f7 | 66 | static inline uint32_t adc_read(analogin_t *obj) { |
<> | 144:ef7eb2e8f9f7 | 67 | volatile uint16_t data; |
<> | 144:ef7eb2e8f9f7 | 68 | |
<> | 144:ef7eb2e8f9f7 | 69 | // Select the appropriate channel and start conversion |
<> | 144:ef7eb2e8f9f7 | 70 | ADCADCSR &= 0xfff8; |
<> | 144:ef7eb2e8f9f7 | 71 | ADCADCSR |= (1 << 13 | (obj->adc & 0x7)); |
<> | 144:ef7eb2e8f9f7 | 72 | |
<> | 144:ef7eb2e8f9f7 | 73 | // Wait end of conversion |
<> | 144:ef7eb2e8f9f7 | 74 | do { |
<> | 144:ef7eb2e8f9f7 | 75 | data = ADCADCSR; |
<> | 144:ef7eb2e8f9f7 | 76 | } while (((data & (1 << 15)) == 0) || ((data & (1 << 13)) != 0)); |
<> | 144:ef7eb2e8f9f7 | 77 | |
<> | 144:ef7eb2e8f9f7 | 78 | // clear flag |
<> | 144:ef7eb2e8f9f7 | 79 | ADCADCSR &= ~(1 << 15); |
<> | 144:ef7eb2e8f9f7 | 80 | |
<> | 144:ef7eb2e8f9f7 | 81 | return ((*(ADCDR[obj->adc])) >> 4) & 0x0FFF; // 12 bits range |
<> | 144:ef7eb2e8f9f7 | 82 | } |
<> | 144:ef7eb2e8f9f7 | 83 | |
<> | 144:ef7eb2e8f9f7 | 84 | #if ANALOGIN_MEDIAN_FILTER |
<> | 144:ef7eb2e8f9f7 | 85 | static inline void order(uint32_t *a, uint32_t *b) { |
<> | 144:ef7eb2e8f9f7 | 86 | if (*a > *b) { |
<> | 144:ef7eb2e8f9f7 | 87 | uint32_t t = *a; |
<> | 144:ef7eb2e8f9f7 | 88 | *a = *b; |
<> | 144:ef7eb2e8f9f7 | 89 | *b = t; |
<> | 144:ef7eb2e8f9f7 | 90 | } |
<> | 144:ef7eb2e8f9f7 | 91 | } |
<> | 144:ef7eb2e8f9f7 | 92 | #endif |
<> | 144:ef7eb2e8f9f7 | 93 | |
<> | 144:ef7eb2e8f9f7 | 94 | static inline uint32_t adc_read_u32(analogin_t *obj) { |
<> | 144:ef7eb2e8f9f7 | 95 | uint32_t value; |
<> | 144:ef7eb2e8f9f7 | 96 | #if ANALOGIN_MEDIAN_FILTER |
<> | 144:ef7eb2e8f9f7 | 97 | uint32_t v1 = adc_read(obj); |
<> | 144:ef7eb2e8f9f7 | 98 | uint32_t v2 = adc_read(obj); |
<> | 144:ef7eb2e8f9f7 | 99 | uint32_t v3 = adc_read(obj); |
<> | 144:ef7eb2e8f9f7 | 100 | order(&v1, &v2); |
<> | 144:ef7eb2e8f9f7 | 101 | order(&v2, &v3); |
<> | 144:ef7eb2e8f9f7 | 102 | order(&v1, &v2); |
<> | 144:ef7eb2e8f9f7 | 103 | value = v2; |
<> | 144:ef7eb2e8f9f7 | 104 | #else |
<> | 144:ef7eb2e8f9f7 | 105 | value = adc_read(obj); |
<> | 144:ef7eb2e8f9f7 | 106 | #endif |
<> | 144:ef7eb2e8f9f7 | 107 | return value; |
<> | 144:ef7eb2e8f9f7 | 108 | } |
<> | 144:ef7eb2e8f9f7 | 109 | |
<> | 144:ef7eb2e8f9f7 | 110 | uint16_t analogin_read_u16(analogin_t *obj) { |
<> | 144:ef7eb2e8f9f7 | 111 | uint32_t value = adc_read_u32(obj); |
<> | 144:ef7eb2e8f9f7 | 112 | |
<> | 144:ef7eb2e8f9f7 | 113 | return (value << 4) | ((value >> 8) & 0x000F); // 12-bit to 16-bit conversion |
<> | 144:ef7eb2e8f9f7 | 114 | } |
<> | 144:ef7eb2e8f9f7 | 115 | |
<> | 144:ef7eb2e8f9f7 | 116 | float analogin_read(analogin_t *obj) { |
<> | 144:ef7eb2e8f9f7 | 117 | uint32_t value = adc_read_u32(obj); |
<> | 144:ef7eb2e8f9f7 | 118 | |
<> | 144:ef7eb2e8f9f7 | 119 | return (float)value * (1.0f / (float)0x0FFF); // 12 bits range |
<> | 144:ef7eb2e8f9f7 | 120 | } |