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targets/TARGET_NUVOTON/TARGET_NUC472/analogin_api.c@149:156823d33999, 2016-10-28 (annotated)

Committer:
<>
Date:
Fri Oct 28 11:17:30 2016 +0100
Revision:
149:156823d33999
Parent:
targets/hal/TARGET_NUVOTON/TARGET_NUC472/analogin_api.c@144:ef7eb2e8f9f7
Child:
153:fa9ff456f731
This updates the lib to the mbed lib v128



NOTE: This release includes a restructuring of the file and directory locations and thus some

include paths in your code may need updating accordingly.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2015-2016 Nuvoton
<> 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
<> 144:ef7eb2e8f9f7 17 #include "analogin_api.h"
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #if DEVICE_ANALOGIN
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 #include "cmsis.h"
<> 144:ef7eb2e8f9f7 22 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 23 #include "PeripheralPins.h"
<> 144:ef7eb2e8f9f7 24 #include "nu_modutil.h"
<> 144:ef7eb2e8f9f7 25
<> 144:ef7eb2e8f9f7 26 struct nu_adc_var {
<> 144:ef7eb2e8f9f7 27 uint32_t en_msk;
<> 144:ef7eb2e8f9f7 28 };
<> 144:ef7eb2e8f9f7 29
<> 144:ef7eb2e8f9f7 30 static struct nu_adc_var adc0_var = {
<> 144:ef7eb2e8f9f7 31 .en_msk = 0
<> 144:ef7eb2e8f9f7 32 };
<> 144:ef7eb2e8f9f7 33 static struct nu_adc_var adc1_var = {
<> 144:ef7eb2e8f9f7 34 .en_msk = 0
<> 144:ef7eb2e8f9f7 35 };
<> 144:ef7eb2e8f9f7 36 static struct nu_adc_var adc2_var = {
<> 144:ef7eb2e8f9f7 37 .en_msk = 0
<> 144:ef7eb2e8f9f7 38 };
<> 144:ef7eb2e8f9f7 39 static struct nu_adc_var adc3_var = {
<> 144:ef7eb2e8f9f7 40 .en_msk = 0
<> 144:ef7eb2e8f9f7 41 };
<> 144:ef7eb2e8f9f7 42 static struct nu_adc_var adc4_var = {
<> 144:ef7eb2e8f9f7 43 .en_msk = 0
<> 144:ef7eb2e8f9f7 44 };
<> 144:ef7eb2e8f9f7 45 static struct nu_adc_var adc5_var = {
<> 144:ef7eb2e8f9f7 46 .en_msk = 0
<> 144:ef7eb2e8f9f7 47 };
<> 144:ef7eb2e8f9f7 48 static struct nu_adc_var adc6_var = {
<> 144:ef7eb2e8f9f7 49 .en_msk = 0
<> 144:ef7eb2e8f9f7 50 };
<> 144:ef7eb2e8f9f7 51 static struct nu_adc_var adc7_var = {
<> 144:ef7eb2e8f9f7 52 .en_msk = 0
<> 144:ef7eb2e8f9f7 53 };
<> 144:ef7eb2e8f9f7 54 static struct nu_adc_var adc8_var = {
<> 144:ef7eb2e8f9f7 55 .en_msk = 0
<> 144:ef7eb2e8f9f7 56 };
<> 144:ef7eb2e8f9f7 57 static struct nu_adc_var adc9_var = {
<> 144:ef7eb2e8f9f7 58 .en_msk = 0
<> 144:ef7eb2e8f9f7 59 };
<> 144:ef7eb2e8f9f7 60 static struct nu_adc_var adc10_var = {
<> 144:ef7eb2e8f9f7 61 .en_msk = 0
<> 144:ef7eb2e8f9f7 62 };
<> 144:ef7eb2e8f9f7 63 static struct nu_adc_var adc11_var = {
<> 144:ef7eb2e8f9f7 64 .en_msk = 0
<> 144:ef7eb2e8f9f7 65 };
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 static const struct nu_modinit_s adc_modinit_tab[] = {
<> 144:ef7eb2e8f9f7 68 {ADC_0_0, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc0_var},
<> 144:ef7eb2e8f9f7 69 {ADC_0_1, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc1_var},
<> 144:ef7eb2e8f9f7 70 {ADC_0_2, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc2_var},
<> 144:ef7eb2e8f9f7 71 {ADC_0_3, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc3_var},
<> 144:ef7eb2e8f9f7 72 {ADC_0_4, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc4_var},
<> 144:ef7eb2e8f9f7 73 {ADC_0_5, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc5_var},
<> 144:ef7eb2e8f9f7 74 {ADC_0_6, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc6_var},
<> 144:ef7eb2e8f9f7 75 {ADC_0_7, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc7_var},
<> 144:ef7eb2e8f9f7 76 {ADC_0_8, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc8_var},
<> 144:ef7eb2e8f9f7 77 {ADC_0_9, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc9_var},
<> 144:ef7eb2e8f9f7 78 {ADC_0_10, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc10_var},
<> 144:ef7eb2e8f9f7 79 {ADC_0_11, ADC_MODULE, CLK_CLKSEL1_ADCSEL_HIRC, CLK_CLKDIV0_ADC(1), ADC_RST, ADC_IRQn, &adc11_var}
<> 144:ef7eb2e8f9f7 80 };
<> 144:ef7eb2e8f9f7 81
<> 144:ef7eb2e8f9f7 82 void analogin_init(analogin_t *obj, PinName pin)
<> 144:ef7eb2e8f9f7 83 {
<> 144:ef7eb2e8f9f7 84 obj->adc = (ADCName) pinmap_peripheral(pin, PinMap_ADC);
<> 144:ef7eb2e8f9f7 85 MBED_ASSERT(obj->adc != (ADCName) NC);
<> 144:ef7eb2e8f9f7 86
<> 144:ef7eb2e8f9f7 87 const struct nu_modinit_s *modinit = get_modinit(obj->adc, adc_modinit_tab);
<> 144:ef7eb2e8f9f7 88 MBED_ASSERT(modinit != NULL);
<> 144:ef7eb2e8f9f7 89 MBED_ASSERT(modinit->modname == obj->adc);
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 // NOTE: All channels (identified by ADCName) share a ADC module. This reset will also affect other channels of the same ADC module.
<> 144:ef7eb2e8f9f7 92 if (! ((struct nu_adc_var *) modinit->var)->en_msk) {
<> 144:ef7eb2e8f9f7 93 // Reset this module if no channel enabled
<> 144:ef7eb2e8f9f7 94 SYS_ResetModule(modinit->rsetidx);
<> 144:ef7eb2e8f9f7 95
<> 144:ef7eb2e8f9f7 96 // Select clock source of paired channels
<> 144:ef7eb2e8f9f7 97 CLK_SetModuleClock(modinit->clkidx, modinit->clksrc, modinit->clkdiv);
<> 144:ef7eb2e8f9f7 98 // Enable clock of paired channels
<> 144:ef7eb2e8f9f7 99 CLK_EnableModuleClock(modinit->clkidx);
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 // Power on ADC
<> 144:ef7eb2e8f9f7 102 ADC_POWER_ON(ADC);
<> 144:ef7eb2e8f9f7 103 }
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 ADC_T *adc_base = (ADC_T *) NU_MODBASE(obj->adc);
<> 144:ef7eb2e8f9f7 106 uint32_t chn = NU_MODSUBINDEX(obj->adc);
<> 144:ef7eb2e8f9f7 107
<> 144:ef7eb2e8f9f7 108 // Wire pinout
<> 144:ef7eb2e8f9f7 109 pinmap_pinout(pin, PinMap_ADC);
<> 144:ef7eb2e8f9f7 110
<> 144:ef7eb2e8f9f7 111 // Enable channel 0
<> 144:ef7eb2e8f9f7 112 ADC_Open(adc_base,
<> 144:ef7eb2e8f9f7 113 ADC_INPUT_MODE_SINGLE_END,
<> 144:ef7eb2e8f9f7 114 ADC_OPERATION_MODE_SINGLE,
<> 144:ef7eb2e8f9f7 115 1 << chn); // ADC_CH_0_MASK~ADC_CH_11_MASK
<> 144:ef7eb2e8f9f7 116
<> 144:ef7eb2e8f9f7 117 ((struct nu_adc_var *) modinit->var)->en_msk |= 1 << chn;
<> 144:ef7eb2e8f9f7 118 }
<> 144:ef7eb2e8f9f7 119
<> 144:ef7eb2e8f9f7 120 uint16_t analogin_read_u16(analogin_t *obj)
<> 144:ef7eb2e8f9f7 121 {
<> 144:ef7eb2e8f9f7 122 ADC_T *adc_base = (ADC_T *) NU_MODBASE(obj->adc);
<> 144:ef7eb2e8f9f7 123 uint32_t chn = NU_MODSUBINDEX(obj->adc);
<> 144:ef7eb2e8f9f7 124
<> 144:ef7eb2e8f9f7 125 ADC_START_CONV(adc_base);
<> 144:ef7eb2e8f9f7 126 while (adc_base->CTL & ADC_CTL_SWTRG_Msk);
<> 144:ef7eb2e8f9f7 127 uint16_t conv_res_12 = ADC_GET_CONVERSION_DATA(adc_base, chn);
<> 144:ef7eb2e8f9f7 128 // Just 12 bits are effective. Convert to 16 bits.
<> 144:ef7eb2e8f9f7 129 // conv_res_12: 0000 b11b10b9b8 b7b6b5b4 b3b2b1b0
<> 144:ef7eb2e8f9f7 130 // conv_res_16: b11b10b9b8 b7b6b5b4 b3b2b1b0 b11b10b9b8
<> 144:ef7eb2e8f9f7 131 uint16_t conv_res_16 = (conv_res_12 << 4) | (conv_res_12 >> 8);
<> 144:ef7eb2e8f9f7 132
<> 144:ef7eb2e8f9f7 133 return conv_res_16;
<> 144:ef7eb2e8f9f7 134 }
<> 144:ef7eb2e8f9f7 135
<> 144:ef7eb2e8f9f7 136 float analogin_read(analogin_t *obj)
<> 144:ef7eb2e8f9f7 137 {
<> 144:ef7eb2e8f9f7 138 uint16_t value = analogin_read_u16(obj);
<> 144:ef7eb2e8f9f7 139 return (float) value * (1.0f / (float) 0xFFFF);
<> 144:ef7eb2e8f9f7 140 }
<> 144:ef7eb2e8f9f7 141
<> 144:ef7eb2e8f9f7 142 #endif