takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/targets/TARGET_NUVOTON/TARGET_M2351/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) 2017-2018 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 "cmsis.h"
kadonotakashi 0:8fdf9a60065b 22 #include "pinmap.h"
kadonotakashi 0:8fdf9a60065b 23 #include "PeripheralPins.h"
kadonotakashi 0:8fdf9a60065b 24 #include "nu_modutil.h"
kadonotakashi 0:8fdf9a60065b 25
kadonotakashi 0:8fdf9a60065b 26 static uint32_t eadc_modinit_mask = 0;
kadonotakashi 0:8fdf9a60065b 27
kadonotakashi 0:8fdf9a60065b 28 static const struct nu_modinit_s adc_modinit_tab[] = {
kadonotakashi 0:8fdf9a60065b 29 {ADC_0_0, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 30 {ADC_0_1, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 31 {ADC_0_2, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 32 {ADC_0_3, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 33 {ADC_0_4, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 34 {ADC_0_5, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 35 {ADC_0_6, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 36 {ADC_0_7, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 37 {ADC_0_8, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 38 {ADC_0_9, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 39 {ADC_0_10, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 40 {ADC_0_11, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 41 {ADC_0_12, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 42 {ADC_0_13, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 43 {ADC_0_14, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 44 {ADC_0_15, EADC_MODULE, 0, CLK_CLKDIV0_EADC(8), EADC_RST, EADC0_IRQn, NULL},
kadonotakashi 0:8fdf9a60065b 45 };
kadonotakashi 0:8fdf9a60065b 46
kadonotakashi 0:8fdf9a60065b 47 void analogin_init(analogin_t *obj, PinName pin)
kadonotakashi 0:8fdf9a60065b 48 {
kadonotakashi 0:8fdf9a60065b 49 obj->adc = (ADCName) pinmap_peripheral(pin, PinMap_ADC);
kadonotakashi 0:8fdf9a60065b 50 MBED_ASSERT(obj->adc != (ADCName) NC);
kadonotakashi 0:8fdf9a60065b 51
kadonotakashi 0:8fdf9a60065b 52 const struct nu_modinit_s *modinit = get_modinit(obj->adc, adc_modinit_tab);
kadonotakashi 0:8fdf9a60065b 53 MBED_ASSERT(modinit != NULL);
kadonotakashi 0:8fdf9a60065b 54 MBED_ASSERT(modinit->modname == (int) obj->adc);
kadonotakashi 0:8fdf9a60065b 55
kadonotakashi 0:8fdf9a60065b 56 EADC_T *eadc_base = (EADC_T *) NU_MODBASE(obj->adc);
kadonotakashi 0:8fdf9a60065b 57
kadonotakashi 0:8fdf9a60065b 58 // 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 59 if (! eadc_modinit_mask) {
kadonotakashi 0:8fdf9a60065b 60 /* Reset module
kadonotakashi 0:8fdf9a60065b 61 *
kadonotakashi 0:8fdf9a60065b 62 * NOTE: We must call secure version (from non-secure domain) because SYS/CLK regions are secure.
kadonotakashi 0:8fdf9a60065b 63 */
kadonotakashi 0:8fdf9a60065b 64 SYS_ResetModule_S(modinit->rsetidx);
kadonotakashi 0:8fdf9a60065b 65
kadonotakashi 0:8fdf9a60065b 66 /* Select IP clock source
kadonotakashi 0:8fdf9a60065b 67 *
kadonotakashi 0:8fdf9a60065b 68 * NOTE: We must call secure version (from non-secure domain) because SYS/CLK regions are secure.
kadonotakashi 0:8fdf9a60065b 69 */
kadonotakashi 0:8fdf9a60065b 70 CLK_SetModuleClock_S(modinit->clkidx, modinit->clksrc, modinit->clkdiv);
kadonotakashi 0:8fdf9a60065b 71
kadonotakashi 0:8fdf9a60065b 72 /* Enable IP clock
kadonotakashi 0:8fdf9a60065b 73 *
kadonotakashi 0:8fdf9a60065b 74 * NOTE: We must call secure version (from non-secure domain) because SYS/CLK regions are secure.
kadonotakashi 0:8fdf9a60065b 75 */
kadonotakashi 0:8fdf9a60065b 76 CLK_EnableModuleClock_S(modinit->clkidx);
kadonotakashi 0:8fdf9a60065b 77
kadonotakashi 0:8fdf9a60065b 78 // Set the ADC internal sampling time, input mode as single-end and enable the A/D converter
kadonotakashi 0:8fdf9a60065b 79 EADC_Open(eadc_base, EADC_CTL_DIFFEN_SINGLE_END);
kadonotakashi 0:8fdf9a60065b 80 }
kadonotakashi 0:8fdf9a60065b 81
kadonotakashi 0:8fdf9a60065b 82 uint32_t chn = NU_MODSUBINDEX(obj->adc);
kadonotakashi 0:8fdf9a60065b 83
kadonotakashi 0:8fdf9a60065b 84 // Wire pinout
kadonotakashi 0:8fdf9a60065b 85 pinmap_pinout(pin, PinMap_ADC);
kadonotakashi 0:8fdf9a60065b 86
kadonotakashi 0:8fdf9a60065b 87 // Configure the sample module Nmod for analog input channel Nch and software trigger source
kadonotakashi 0:8fdf9a60065b 88 EADC_ConfigSampleModule(eadc_base, chn, EADC_SOFTWARE_TRIGGER, chn);
kadonotakashi 0:8fdf9a60065b 89
kadonotakashi 0:8fdf9a60065b 90 eadc_modinit_mask |= 1 << chn;
kadonotakashi 0:8fdf9a60065b 91 }
kadonotakashi 0:8fdf9a60065b 92
kadonotakashi 0:8fdf9a60065b 93 uint16_t analogin_read_u16(analogin_t *obj)
kadonotakashi 0:8fdf9a60065b 94 {
kadonotakashi 0:8fdf9a60065b 95 EADC_T *eadc_base = (EADC_T *) NU_MODBASE(obj->adc);
kadonotakashi 0:8fdf9a60065b 96 uint32_t chn = NU_MODSUBINDEX(obj->adc);
kadonotakashi 0:8fdf9a60065b 97
kadonotakashi 0:8fdf9a60065b 98 EADC_START_CONV(eadc_base, 1 << chn);
kadonotakashi 0:8fdf9a60065b 99 while (EADC_GET_DATA_VALID_FLAG(eadc_base, 1 << chn) != ((uint32_t) (1 << chn)));
kadonotakashi 0:8fdf9a60065b 100 uint16_t conv_res_12 = EADC_GET_CONV_DATA(eadc_base, chn);
kadonotakashi 0:8fdf9a60065b 101 // Just 12 bits are effective. Convert to 16 bits.
kadonotakashi 0:8fdf9a60065b 102 // conv_res_12: 0000 b11b10b9b8 b7b6b5b4 b3b2b1b0
kadonotakashi 0:8fdf9a60065b 103 // conv_res_16: b11b10b9b8 b7b6b5b4 b3b2b1b0 b11b10b9b8
kadonotakashi 0:8fdf9a60065b 104 uint16_t conv_res_16 = (conv_res_12 << 4) | (conv_res_12 >> 8);
kadonotakashi 0:8fdf9a60065b 105
kadonotakashi 0:8fdf9a60065b 106 return conv_res_16;
kadonotakashi 0:8fdf9a60065b 107 }
kadonotakashi 0:8fdf9a60065b 108
kadonotakashi 0:8fdf9a60065b 109 float analogin_read(analogin_t *obj)
kadonotakashi 0:8fdf9a60065b 110 {
kadonotakashi 0:8fdf9a60065b 111 uint16_t value = analogin_read_u16(obj);
kadonotakashi 0:8fdf9a60065b 112 return (float) value * (1.0f / (float) 0xFFFF);
kadonotakashi 0:8fdf9a60065b 113 }
kadonotakashi 0:8fdf9a60065b 114
kadonotakashi 0:8fdf9a60065b 115 #endif