mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_ARM_SSG/TARGET_MPS2/analogin_api.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
149:156823d33999 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 80:bdf1132a57cf 1 /* mbed Microcontroller Library
mbed_official 80:bdf1132a57cf 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 80:bdf1132a57cf 3 *
mbed_official 80:bdf1132a57cf 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 80:bdf1132a57cf 5 * you may not use this file except in compliance with the License.
mbed_official 80:bdf1132a57cf 6 * You may obtain a copy of the License at
mbed_official 80:bdf1132a57cf 7 *
mbed_official 80:bdf1132a57cf 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 80:bdf1132a57cf 9 *
mbed_official 80:bdf1132a57cf 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 80:bdf1132a57cf 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 80:bdf1132a57cf 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 80:bdf1132a57cf 13 * See the License for the specific language governing permissions and
mbed_official 80:bdf1132a57cf 14 * limitations under the License.
mbed_official 80:bdf1132a57cf 15 */
mbed_official 80:bdf1132a57cf 16 #include "mbed_assert.h"
mbed_official 80:bdf1132a57cf 17 #include "analogin_api.h"
mbed_official 80:bdf1132a57cf 18
mbed_official 80:bdf1132a57cf 19 #include "cmsis.h"
mbed_official 80:bdf1132a57cf 20 #include "pinmap.h"
mbed_official 80:bdf1132a57cf 21
mbed_official 80:bdf1132a57cf 22 #define ADC_12BIT_RANGE 0xFFF
mbed_official 80:bdf1132a57cf 23
mbed_official 80:bdf1132a57cf 24 static const PinMap PinMap_ADC[] = {
mbed_official 80:bdf1132a57cf 25 {A0_0, ADC0_0, 0},
mbed_official 80:bdf1132a57cf 26 {A0_1, ADC0_1, 0},
mbed_official 80:bdf1132a57cf 27 {A0_2, ADC0_2, 0},
mbed_official 80:bdf1132a57cf 28 {A0_3, ADC0_3, 0},
mbed_official 80:bdf1132a57cf 29 {A0_4, ADC0_4, 0},
mbed_official 80:bdf1132a57cf 30 {A0_5, ADC0_5, 0},
mbed_official 80:bdf1132a57cf 31 {A1_0, ADC0_6, 0},
mbed_official 80:bdf1132a57cf 32 {A1_1, ADC0_7, 0},
mbed_official 80:bdf1132a57cf 33 {A1_2, ADC0_8, 0},
mbed_official 80:bdf1132a57cf 34 {A1_3, ADC0_9, 0},
mbed_official 80:bdf1132a57cf 35 {A1_4, ADC0_10, 0},
mbed_official 80:bdf1132a57cf 36 {A1_5, ADC0_11, 0},
mbed_official 80:bdf1132a57cf 37 {NC, NC, 0}
mbed_official 80:bdf1132a57cf 38 };
mbed_official 80:bdf1132a57cf 39
mbed_official 80:bdf1132a57cf 40 static const PinMap PinMap_SPI_SCLK[] = {
mbed_official 80:bdf1132a57cf 41 {ADC_SCLK , SPI_3, 0},
mbed_official 80:bdf1132a57cf 42 {NC , NC , 0}
mbed_official 80:bdf1132a57cf 43 };
mbed_official 80:bdf1132a57cf 44
mbed_official 80:bdf1132a57cf 45 static const PinMap PinMap_SPI_MOSI[] = {
mbed_official 80:bdf1132a57cf 46 {ADC_MOSI, SPI_3, 0},
mbed_official 80:bdf1132a57cf 47 {NC , NC , 0}
mbed_official 80:bdf1132a57cf 48 };
mbed_official 80:bdf1132a57cf 49
mbed_official 80:bdf1132a57cf 50 static const PinMap PinMap_SPI_MISO[] = {
mbed_official 80:bdf1132a57cf 51 {ADC_MISO, SPI_3, 0},
mbed_official 80:bdf1132a57cf 52 {NC , NC , 0}
mbed_official 80:bdf1132a57cf 53 };
mbed_official 80:bdf1132a57cf 54
mbed_official 80:bdf1132a57cf 55 static const PinMap PinMap_SPI_SSEL[] = {
mbed_official 80:bdf1132a57cf 56 {ADC_SSEL, SPI_3, 0},
mbed_official 80:bdf1132a57cf 57 {NC , NC , 0}
mbed_official 80:bdf1132a57cf 58 };
mbed_official 80:bdf1132a57cf 59
mbed_official 80:bdf1132a57cf 60 #define ADC_RANGE ADC_12BIT_RANGE
mbed_official 80:bdf1132a57cf 61 int analog_spi_inited = 0;
mbed_official 80:bdf1132a57cf 62
mbed_official 80:bdf1132a57cf 63 void analogin_init(analogin_t *obj, PinName pin) {
mbed_official 80:bdf1132a57cf 64
mbed_official 80:bdf1132a57cf 65 obj->adc = (ADCName)pinmap_peripheral(pin, PinMap_ADC);
mbed_official 80:bdf1132a57cf 66 MBED_ASSERT(obj->adc != (ADCName)NC);
mbed_official 80:bdf1132a57cf 67 obj->pin = pin;
mbed_official 80:bdf1132a57cf 68 obj->pin_number = pin-600;
mbed_official 80:bdf1132a57cf 69 obj->address = (0x0000 | (pin-600));
mbed_official 80:bdf1132a57cf 70
mbed_official 80:bdf1132a57cf 71 SPIName adc_mosi = (SPIName)pinmap_peripheral(ADC_MOSI, PinMap_SPI_MOSI);
mbed_official 80:bdf1132a57cf 72 SPIName adc_miso = (SPIName)pinmap_peripheral(ADC_MISO, PinMap_SPI_MISO);
mbed_official 80:bdf1132a57cf 73 SPIName adc_sclk = (SPIName)pinmap_peripheral(ADC_SCLK, PinMap_SPI_SCLK);
mbed_official 80:bdf1132a57cf 74 SPIName adc_ssel = (SPIName)pinmap_peripheral(ADC_SSEL, PinMap_SPI_SSEL);
mbed_official 80:bdf1132a57cf 75 SPIName adc_data = (SPIName)pinmap_merge(adc_mosi, adc_miso);
mbed_official 80:bdf1132a57cf 76 SPIName adc_cntl = (SPIName)pinmap_merge(adc_sclk, adc_ssel);
mbed_official 80:bdf1132a57cf 77 obj->adc_spi = (MPS2_SSP_TypeDef*)pinmap_merge(adc_data, adc_cntl);
mbed_official 80:bdf1132a57cf 78
mbed_official 80:bdf1132a57cf 79 if(analog_spi_inited == 0){
mbed_official 80:bdf1132a57cf 80 obj->adc_spi->CR1 = 0;
mbed_official 80:bdf1132a57cf 81 obj->adc_spi->CR0 = SSP_CR0_SCR_DFLT | SSP_CR0_FRF_MOT | SSP_CR0_DSS_16;
mbed_official 80:bdf1132a57cf 82 obj->adc_spi->CPSR = SSP_CPSR_DFLT;
mbed_official 80:bdf1132a57cf 83 obj->adc_spi->IMSC = 0x8;
mbed_official 80:bdf1132a57cf 84 obj->adc_spi->DMACR = 0;
mbed_official 80:bdf1132a57cf 85 obj->adc_spi->CR1 = SSP_CR1_SSE_Msk;
mbed_official 80:bdf1132a57cf 86 obj->adc_spi->ICR = 0x3;
mbed_official 80:bdf1132a57cf 87 analog_spi_inited = 1;
mbed_official 80:bdf1132a57cf 88 }
mbed_official 80:bdf1132a57cf 89
mbed_official 80:bdf1132a57cf 90 pinmap_pinout(ADC_MOSI, PinMap_SPI_MOSI);
mbed_official 80:bdf1132a57cf 91 pinmap_pinout(ADC_MISO, PinMap_SPI_MISO);
mbed_official 80:bdf1132a57cf 92 pinmap_pinout(ADC_SCLK, PinMap_SPI_SCLK);
mbed_official 80:bdf1132a57cf 93 pinmap_pinout(ADC_SSEL, PinMap_SPI_SSEL);
mbed_official 80:bdf1132a57cf 94 pinmap_pinout(pin, PinMap_ADC);
mbed_official 80:bdf1132a57cf 95 }
mbed_official 80:bdf1132a57cf 96
mbed_official 80:bdf1132a57cf 97 static inline uint32_t adc_read(analogin_t *obj) {
mbed_official 80:bdf1132a57cf 98 return 0;
mbed_official 80:bdf1132a57cf 99 }
mbed_official 80:bdf1132a57cf 100
mbed_official 80:bdf1132a57cf 101
mbed_official 80:bdf1132a57cf 102 float analogin_read(analogin_t *obj) {
mbed_official 80:bdf1132a57cf 103 uint32_t value = adc_read(obj);
mbed_official 80:bdf1132a57cf 104 return 0;
mbed_official 80:bdf1132a57cf 105 }
mbed_official 80:bdf1132a57cf 106
mbed_official 80:bdf1132a57cf 107 uint16_t analogin_read_u16(analogin_t *obj) {
mbed_official 80:bdf1132a57cf 108 return 0;
mbed_official 80:bdf1132a57cf 109 }
mbed_official 80:bdf1132a57cf 110