takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/targets/TARGET_NUVOTON/TARGET_NANO100/analogin_api.c@0:8fdf9a60065b, 2018-10-10 (annotated)

Committer:
kadonotakashi
Date:
Wed Oct 10 00:33:53 2018 +0000
Revision:
0:8fdf9a60065b
how to make mbed librry

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2015-2017 Nuvoton
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16
kadonotakashi 0:8fdf9a60065b 17 #include "analogin_api.h"
kadonotakashi 0:8fdf9a60065b 18
kadonotakashi 0:8fdf9a60065b 19 #if DEVICE_ANALOGIN
kadonotakashi 0:8fdf9a60065b 20
kadonotakashi 0:8fdf9a60065b 21 #include "mbed_wait_api.h"
kadonotakashi 0:8fdf9a60065b 22 #include "cmsis.h"
kadonotakashi 0:8fdf9a60065b 23 #include "pinmap.h"
kadonotakashi 0:8fdf9a60065b 24 #include "PeripheralPins.h"
kadonotakashi 0:8fdf9a60065b 25 #include "nu_modutil.h"
kadonotakashi 0:8fdf9a60065b 26
kadonotakashi 0:8fdf9a60065b 27 static uint32_t adc_modinit_mask = 0;
kadonotakashi 0:8fdf9a60065b 28 volatile int adc_busy_flag = 0;
kadonotakashi 0:8fdf9a60065b 29
kadonotakashi 0:8fdf9a60065b 30 static const struct nu_modinit_s adc_modinit_tab[] = {
kadonotakashi 0:8fdf9a60065b 31 {ADC_0_0, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 32 {ADC_0_1, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 33 {ADC_0_2, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 34 {ADC_0_3, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 35 {ADC_0_4, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 36 {ADC_0_5, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 37 {ADC_0_6, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 38 {ADC_0_7, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 39 {ADC_0_8, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 40 {ADC_0_9, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 41 {ADC_0_10, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 42 {ADC_0_11, ADC_MODULE, CLK_CLKSEL1_ADC_S_HIRC, CLK_ADC_CLK_DIVIDER(1), ADC_RST, ADC_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 43 };
kadonotakashi 0:8fdf9a60065b 44
kadonotakashi 0:8fdf9a60065b 45 void analogin_init(analogin_t *obj, PinName pin)
kadonotakashi 0:8fdf9a60065b 46 {
kadonotakashi 0:8fdf9a60065b 47 obj->adc = (ADCName) pinmap_peripheral(pin, PinMap_ADC);
kadonotakashi 0:8fdf9a60065b 48 MBED_ASSERT(obj->adc != (ADCName) NC);
kadonotakashi 0:8fdf9a60065b 49
kadonotakashi 0:8fdf9a60065b 50 const struct nu_modinit_s *modinit = get_modinit(obj->adc, adc_modinit_tab);
kadonotakashi 0:8fdf9a60065b 51 MBED_ASSERT(modinit != NULL);
kadonotakashi 0:8fdf9a60065b 52 MBED_ASSERT((ADCName) modinit->modname == obj->adc);
kadonotakashi 0:8fdf9a60065b 53
kadonotakashi 0:8fdf9a60065b 54 ADC_T *adc_base = (ADC_T *) NU_MODBASE(obj->adc);
kadonotakashi 0:8fdf9a60065b 55 uint32_t chn = NU_MODSUBINDEX(obj->adc);
kadonotakashi 0:8fdf9a60065b 56
kadonotakashi 0:8fdf9a60065b 57 // Wait for ADC is not busy, due to all ADC channels share the same module
kadonotakashi 0:8fdf9a60065b 58 while (adc_busy_flag != 0) {
kadonotakashi 0:8fdf9a60065b 59 wait_us(100);
kadonotakashi 0:8fdf9a60065b 60 }
kadonotakashi 0:8fdf9a60065b 61 adc_busy_flag = 1;
kadonotakashi 0:8fdf9a60065b 62
kadonotakashi 0:8fdf9a60065b 63 // NOTE: All channels (identified by ADCName) share a ADC module. This reset will also affect other channels of the same ADC module.
kadonotakashi 0:8fdf9a60065b 64 if (! adc_modinit_mask) {
kadonotakashi 0:8fdf9a60065b 65 // Reset this module if no channel enabled
kadonotakashi 0:8fdf9a60065b 66 SYS_ResetModule(modinit->rsetidx);
kadonotakashi 0:8fdf9a60065b 67
kadonotakashi 0:8fdf9a60065b 68 // Select clock source of paired channels
kadonotakashi 0:8fdf9a60065b 69 CLK_SetModuleClock(modinit->clkidx, modinit->clksrc, modinit->clkdiv);
kadonotakashi 0:8fdf9a60065b 70 // Enable clock of paired channels
kadonotakashi 0:8fdf9a60065b 71 CLK_EnableModuleClock(modinit->clkidx);
kadonotakashi 0:8fdf9a60065b 72
kadonotakashi 0:8fdf9a60065b 73 // Set operation mode and enable channel N
kadonotakashi 0:8fdf9a60065b 74 ADC_Open(ADC, ADC_INPUT_MODE_SINGLE_END, ADC_OPERATION_MODE_SINGLE_CYCLE, 1 << chn);
kadonotakashi 0:8fdf9a60065b 75
kadonotakashi 0:8fdf9a60065b 76 // Set reference voltage to AVDD
kadonotakashi 0:8fdf9a60065b 77 ADC_SET_REF_VOLTAGE(ADC, ADC_REFSEL_POWER);
kadonotakashi 0:8fdf9a60065b 78
kadonotakashi 0:8fdf9a60065b 79 // Power on ADC
kadonotakashi 0:8fdf9a60065b 80 ADC_POWER_ON(ADC);
kadonotakashi 0:8fdf9a60065b 81 } else {
kadonotakashi 0:8fdf9a60065b 82 // Just enable channel N
kadonotakashi 0:8fdf9a60065b 83 adc_base->CHEN |= 1 << chn;
kadonotakashi 0:8fdf9a60065b 84 }
kadonotakashi 0:8fdf9a60065b 85
kadonotakashi 0:8fdf9a60065b 86 adc_modinit_mask |= 1 << chn;
kadonotakashi 0:8fdf9a60065b 87
kadonotakashi 0:8fdf9a60065b 88 adc_busy_flag = 0;
kadonotakashi 0:8fdf9a60065b 89
kadonotakashi 0:8fdf9a60065b 90 // Wire pinout
kadonotakashi 0:8fdf9a60065b 91 pinmap_pinout(pin, PinMap_ADC);
kadonotakashi 0:8fdf9a60065b 92 }
kadonotakashi 0:8fdf9a60065b 93
kadonotakashi 0:8fdf9a60065b 94 void analogin_deinit(PinName pin)
kadonotakashi 0:8fdf9a60065b 95 {
kadonotakashi 0:8fdf9a60065b 96 analogin_t obj;
kadonotakashi 0:8fdf9a60065b 97 obj.adc = (ADCName) pinmap_peripheral(pin, PinMap_ADC);
kadonotakashi 0:8fdf9a60065b 98 MBED_ASSERT(obj.adc != (ADCName) NC);
kadonotakashi 0:8fdf9a60065b 99
kadonotakashi 0:8fdf9a60065b 100 const struct nu_modinit_s *modinit = get_modinit(obj.adc, adc_modinit_tab);
kadonotakashi 0:8fdf9a60065b 101 MBED_ASSERT(modinit != NULL);
kadonotakashi 0:8fdf9a60065b 102 MBED_ASSERT((ADCName) modinit->modname == obj.adc);
kadonotakashi 0:8fdf9a60065b 103
kadonotakashi 0:8fdf9a60065b 104 ADC_T *adc_base = (ADC_T *) NU_MODBASE(obj.adc);
kadonotakashi 0:8fdf9a60065b 105 uint32_t chn = NU_MODSUBINDEX(obj.adc);
kadonotakashi 0:8fdf9a60065b 106
kadonotakashi 0:8fdf9a60065b 107 // Wait for ADC is not busy, due to all ADC channels share the same module
kadonotakashi 0:8fdf9a60065b 108 while (adc_busy_flag != 0) {
kadonotakashi 0:8fdf9a60065b 109 wait_us(100);
kadonotakashi 0:8fdf9a60065b 110 }
kadonotakashi 0:8fdf9a60065b 111 adc_busy_flag = 1;
kadonotakashi 0:8fdf9a60065b 112
kadonotakashi 0:8fdf9a60065b 113 // Disable channel N
kadonotakashi 0:8fdf9a60065b 114 adc_base->CHEN &= ~(1 << chn);
kadonotakashi 0:8fdf9a60065b 115 adc_modinit_mask &= ~(1 << chn);
kadonotakashi 0:8fdf9a60065b 116
kadonotakashi 0:8fdf9a60065b 117 adc_busy_flag = 0;
kadonotakashi 0:8fdf9a60065b 118 }
kadonotakashi 0:8fdf9a60065b 119
kadonotakashi 0:8fdf9a60065b 120 uint16_t analogin_read_u16(analogin_t *obj)
kadonotakashi 0:8fdf9a60065b 121 {
kadonotakashi 0:8fdf9a60065b 122 ADC_T *adc_base = (ADC_T *) NU_MODBASE(obj->adc);
kadonotakashi 0:8fdf9a60065b 123 uint32_t chn = NU_MODSUBINDEX(obj->adc);
kadonotakashi 0:8fdf9a60065b 124
kadonotakashi 0:8fdf9a60065b 125 // Wait for ADC is not busy, due to all ADC channels share the same module
kadonotakashi 0:8fdf9a60065b 126 while (adc_busy_flag != 0) {
kadonotakashi 0:8fdf9a60065b 127 wait_us(100);
kadonotakashi 0:8fdf9a60065b 128 }
kadonotakashi 0:8fdf9a60065b 129 adc_busy_flag = 1;
kadonotakashi 0:8fdf9a60065b 130
kadonotakashi 0:8fdf9a60065b 131 // Start the A/D conversion
kadonotakashi 0:8fdf9a60065b 132 adc_base->CR |= ADC_CR_ADST_Msk;
kadonotakashi 0:8fdf9a60065b 133 // Wait for conversion finish
kadonotakashi 0:8fdf9a60065b 134 while (! ADC_GET_INT_FLAG(adc_base, ADC_ADF_INT) & ADC_ADF_INT) ;
kadonotakashi 0:8fdf9a60065b 135 ADC_CLR_INT_FLAG(ADC, ADC_ADF_INT);
kadonotakashi 0:8fdf9a60065b 136 uint16_t conv_res_12 = ADC_GET_CONVERSION_DATA(adc_base, chn);
kadonotakashi 0:8fdf9a60065b 137
kadonotakashi 0:8fdf9a60065b 138 adc_busy_flag = 0;
kadonotakashi 0:8fdf9a60065b 139
kadonotakashi 0:8fdf9a60065b 140 // Just 12 bits are effective. Convert to 16 bits.
kadonotakashi 0:8fdf9a60065b 141 // conv_res_12: 0000 b11b10b9b8 b7b6b5b4 b3b2b1b0
kadonotakashi 0:8fdf9a60065b 142 // conv_res_16: b11b10b9b8 b7b6b5b4 b3b2b1b0 b11b10b9b8
kadonotakashi 0:8fdf9a60065b 143 uint16_t conv_res_16 = (conv_res_12 << 4) | (conv_res_12 >> 8);
kadonotakashi 0:8fdf9a60065b 144
kadonotakashi 0:8fdf9a60065b 145 return conv_res_16;
kadonotakashi 0:8fdf9a60065b 146 }
kadonotakashi 0:8fdf9a60065b 147
kadonotakashi 0:8fdf9a60065b 148 float analogin_read(analogin_t *obj)
kadonotakashi 0:8fdf9a60065b 149 {
kadonotakashi 0:8fdf9a60065b 150 uint16_t value = analogin_read_u16(obj);
kadonotakashi 0:8fdf9a60065b 151 return (float) value * (1.0f / (float) 0xFFFF);
kadonotakashi 0:8fdf9a60065b 152 }
kadonotakashi 0:8fdf9a60065b 153
kadonotakashi 0:8fdf9a60065b 154 #endif