Charles Andre / Mbed OS Register_level_analog

some success, still errors

main.cpp@108:b8d05666d95f, 2019-11-28 (annotated)

Committer:
candre97
Date:
Thu Nov 28 22:26:38 2019 +0000
Revision:
108:b8d05666d95f
Parent:
102:780b4ecac614
Child:
109:20827b1e5195
working for wrong I/O number, just gotta fix channel and other stuff. Maybe can init GPIO as analog input using API and then just read using registers.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 82:abf1b1785bd7 1 /* mbed Microcontroller Library
mbed_official 82:abf1b1785bd7 2 * Copyright (c) 2018 ARM Limited
mbed_official 82:abf1b1785bd7 3 * SPDX-License-Identifier: Apache-2.0
mbed_official 82:abf1b1785bd7 4 */
mbed_official 82:abf1b1785bd7 5
Jonathan Austin 0:2757d7abb7d9 6 #include "mbed.h"
mbed_official 100:ec006d6f3cb6 7 #include "platform/mbed_thread.h"
mbed_official 82:abf1b1785bd7 8 #include "stats_report.h"
candre97 102:780b4ecac614 9 #include <AnalogIn.h>
candre97 102:780b4ecac614 10 #include <AnalogOut.h>
Jonathan Austin 0:2757d7abb7d9 11
candre97 108:b8d05666d95f 12 #include "stm32l1xx_hal.h"
candre97 108:b8d05666d95f 13 #include "stm32l1xx_hal_def.h"
candre97 108:b8d05666d95f 14 #include "stm32l1xx_hal_adc_ex.h"
candre97 108:b8d05666d95f 15
candre97 102:780b4ecac614 16 AnalogOut v_src(GPIO0);
candre97 102:780b4ecac614 17 AnalogIn therm(GPIO2);
candre97 102:780b4ecac614 18
candre97 102:780b4ecac614 19 #define SLEEP_TIME 50 // (msec)
candre97 102:780b4ecac614 20 #define PRINT_AFTER_N_LOOPS 20
Jonathan Austin 0:2757d7abb7d9 21
candre97 108:b8d05666d95f 22
candre97 108:b8d05666d95f 23 static void SystemClock_Config(void)
candre97 108:b8d05666d95f 24 {
candre97 108:b8d05666d95f 25
candre97 108:b8d05666d95f 26 }
candre97 108:b8d05666d95f 27
candre97 102:780b4ecac614 28 void ConfigureADC()
candre97 102:780b4ecac614 29 {
candre97 102:780b4ecac614 30
candre97 108:b8d05666d95f 31
candre97 108:b8d05666d95f 32
candre97 102:780b4ecac614 33 }
mbed_official 88:bea4f2daa48c 34
Jonathan Austin 1:846c97078558 35 // main() runs in its own thread in the OS
mbed_official 82:abf1b1785bd7 36 int main()
mbed_official 82:abf1b1785bd7 37 {
candre97 108:b8d05666d95f 38 SystemInit();
candre97 108:b8d05666d95f 39 /* Setup GPIO for LEDs */
candre97 108:b8d05666d95f 40 RCC->APB2ENR |= 1 << 6; /* Enable GPIOE clock */
candre97 108:b8d05666d95f 41
candre97 108:b8d05666d95f 42 /* Setup and initialize ADC converter */
candre97 108:b8d05666d95f 43 RCC->APB2ENR |= 1 << 9; /* Enable ADC1 clock */
candre97 108:b8d05666d95f 44 //GPIOC->CRL &= 0xFFF0FFFF; /* Configure PC4 as ADC.14 input */
candre97 108:b8d05666d95f 45 ADC1->SQR1 = 0x00000000; /* Regular channel 1 conversion */
candre97 108:b8d05666d95f 46 ADC1->SQR2 = 0x00000000; /* Clear register */
candre97 108:b8d05666d95f 47 ADC1->SQR3 = 14 << 0; /* SQ1 = channel 14 */
candre97 108:b8d05666d95f 48 ADC1->SMPR1 = 5 << 12; /* Channel 14 sample time is 55.5 cyc */
candre97 108:b8d05666d95f 49 ADC1->SMPR2 = 0x00000000; /* Clear register */
candre97 108:b8d05666d95f 50 ADC1->CR1 = 1 << 8; /* Scan mode on */
candre97 108:b8d05666d95f 51 ADC1->CR2 = (1 << 20) | /* Enable external trigger */
candre97 108:b8d05666d95f 52 (7 << 17) | /* EXTSEL = SWSTART */
candre97 108:b8d05666d95f 53 (1 << 1) | /* Continuous conversion */
candre97 108:b8d05666d95f 54 (1 << 0) ; /* ADC enable */
candre97 108:b8d05666d95f 55 ADC1->CR2 |= 1 << 3; /* Initialize calibration registers */
candre97 108:b8d05666d95f 56 while (ADC1->CR2 & (1 << 3)); /* Wait for initialization to finish */
candre97 108:b8d05666d95f 57 ADC1->CR2 |= 1 << 2; /* Start calibration */
candre97 108:b8d05666d95f 58 while (ADC1->CR2 & (1 << 2)); /* Wait for calibration to finish */
candre97 108:b8d05666d95f 59 ADC1->CR2 |= 1 << 22; /* Start first conversion */
Jonathan Austin 0:2757d7abb7d9 60 }