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Merge branch '4swToAdc'

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This commit is contained in:
jonny_l480 2022-09-12 13:26:15 +02:00
commit 59df1a9aa2
19 changed files with 1265 additions and 157 deletions
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4
components/gpio/CMakeLists.txt
View File

@ -1,4 +1,6 @@
idf_component_register(
SRCS "gpio_evaluateSwitch.cpp"
SRCS
"gpio_evaluateSwitch.cpp"
"gpio_adc.cpp"
INCLUDE_DIRS "."
)

21
components/gpio/gpio_adc.cpp Normal file
View File

@ -0,0 +1,21 @@
#include "gpio_adc.hpp"
//=============================
//========= readAdc ===========
//=============================
//function for multisampling an anlog input
int gpio_readAdc(adc1_channel_t adc_channel, bool inverted) {
//make multiple measurements
int adc_reading = 0;
for (int i = 0; i < 32; i++) {
adc_reading += adc1_get_raw(adc_channel);
}
adc_reading = adc_reading / 32;
//return original or inverted result
if (inverted) {
return 4095 - adc_reading;
} else {
return adc_reading;
}
}

9
components/gpio/gpio_adc.hpp Normal file
View File

@ -0,0 +1,9 @@
#pragma once
#include <stdio.h>
#include "driver/adc.h"
//function for multisampling an anlog input
//measures 30 times and returns average
//if invertion is used currently 11bit resolution is assumed (subtracts from 4095)
//TODO: rework this function to be more universal
int gpio_readAdc(adc1_channel_t adc_channel, bool inverted = false);

189
components/gpio/gpio_evaluateSwitch.cpp
View File

@ -9,12 +9,12 @@ gpio_evaluatedSwitch::gpio_evaluatedSwitch( //minimal (use default values)
gpio_num = gpio_num_declare;
pullup = true;
inverted = false;
inputSource = inputSource_t::GPIO;
init();
initGpio();
};
gpio_evaluatedSwitch::gpio_evaluatedSwitch( //optional parameters given
gpio_num_t gpio_num_declare,
bool pullup_declare,
@ -23,13 +23,25 @@ gpio_evaluatedSwitch::gpio_evaluatedSwitch( //optional parameters given
gpio_num = gpio_num_declare;
pullup = pullup_declare;
inverted = inverted_declare;
inputSource = inputSource_t::GPIO;
init();
initGpio();
};
gpio_evaluatedSwitch::gpio_evaluatedSwitch( //with function as input source
bool (*getInputStatePtr_f)(void),
bool inverted_f){
//gpio_num = NULL;
//pullup = NULL;
inverted = inverted_f;
getInputStatePtr = getInputStatePtr_f;
inputSource = inputSource_t::FUNCTION;
};
void gpio_evaluatedSwitch::init(){
void gpio_evaluatedSwitch::initGpio(){
ESP_LOGI(TAG, "initializing gpio pin %d", (int)gpio_num);
//define gpio pin as input
@ -48,122 +60,85 @@ void gpio_evaluatedSwitch::init(){
};
void gpio_evaluatedSwitch::handle(){ //Statemachine for debouncing and edge detection
//--- get pin state with required method ---
switch (inputSource){
case inputSource_t::GPIO: //from gpio pin
if (gpio_get_level(gpio_num) == 0){ //pin low
inputState = true;
} else { //pin high
inputState = false;
}
break;
case inputSource_t::FUNCTION: //from funtion
inputState = (*getInputStatePtr)();
break;
}
//--- invert state ---
//not inverted: switch switches to GND when active
//inverted: switch switched to VCC when active
if (inverted == true){
//=========================================================
//=========== Statemachine for inverted switch ============
//=================== (switch to VCC) =====================
//=========================================================
switch (p_state){
default:
p_state = switchState::FALSE;
break;
inputState = !inputState;
}
case switchState::FALSE: //input confirmed high (released)
fallingEdge = false; //reset edge event
if (gpio_get_level(gpio_num) == 1){ //pin high (on)
p_state = switchState::HIGH;
timestampHigh = esp_log_timestamp(); //save timestamp switched from low to high
} else {
msReleased = esp_log_timestamp() - timestampLow; //update duration released
}
break;
case switchState::HIGH: //input recently switched to high (pressed)
if (gpio_get_level(gpio_num) == 1){ //pin still high (on)
if (esp_log_timestamp() - timestampHigh > minOnMs){ //pin in same state long enough
p_state = switchState::TRUE;
state = true;
risingEdge = true;
msReleased = timestampHigh - timestampLow; //calculate duration the button was released
}
}else{
p_state = switchState::FALSE;
}
break;
//=========================================================
//========= Statemachine for evaluateing switch ===========
//=========================================================
switch (p_state){
default:
p_state = switchState::FALSE;
break;
case switchState::TRUE: //input confirmed high (pressed)
risingEdge = false; //reset edge event
if (gpio_get_level(gpio_num) == 0){ //pin low (off)
timestampLow = esp_log_timestamp();
p_state = switchState::LOW;
} else {
msPressed = esp_log_timestamp() - timestampHigh; //update duration pressed
}
case switchState::FALSE: //input confirmed high (released)
fallingEdge = false; //reset edge event
if (inputState == true){ //pin high (on)
p_state = switchState::HIGH;
timestampHigh = esp_log_timestamp(); //save timestamp switched from low to high
} else {
msReleased = esp_log_timestamp() - timestampLow; //update duration released
}
break;
break;
case switchState::LOW: //input recently switched to low (released)
if (gpio_get_level(gpio_num) == 0){ //pin still low (off)
if (esp_log_timestamp() - timestampLow > minOffMs){ //pin in same state long enough
p_state = switchState::FALSE;
msPressed = timestampLow - timestampHigh; //calculate duration the button was pressed
state=false;
fallingEdge=true;
}
}else{
case switchState::HIGH: //input recently switched to high (pressed)
if (inputState == true){ //pin still high (on)
if (esp_log_timestamp() - timestampHigh > minOnMs){ //pin in same state long enough
p_state = switchState::TRUE;
state = true;
risingEdge = true;
msReleased = timestampHigh - timestampLow; //calculate duration the button was released
}
break;
}
}else{
//=========================================================
//========= Statemachine for not inverted switch ==========
//=================== (switch to GND) =====================
//=========================================================
switch (p_state){
default:
}else{
p_state = switchState::FALSE;
break;
}
break;
case switchState::FALSE: //input confirmed high (released)
fallingEdge = false; //reset edge event
if (gpio_get_level(gpio_num) == 0){ //pin low (on)
p_state = switchState::LOW;
timestampLow = esp_log_timestamp(); //save timestamp switched from high to low
} else {
msReleased = esp_log_timestamp() - timestampHigh; //update duration released
}
break;
case switchState::TRUE: //input confirmed high (pressed)
risingEdge = false; //reset edge event
if (inputState == false){ //pin low (off)
timestampLow = esp_log_timestamp();
p_state = switchState::LOW;
} else {
msPressed = esp_log_timestamp() - timestampHigh; //update duration pressed
}
case switchState::LOW: //input recently switched to low (pressed)
if (gpio_get_level(gpio_num) == 0){ //pin still low (on)
if (esp_log_timestamp() - timestampLow > minOnMs){ //pin in same state long enough
p_state = switchState::TRUE;
state = true;
risingEdge = true;
msReleased = timestampLow - timestampHigh; //calculate duration the button was released
}
}else{
break;
case switchState::LOW: //input recently switched to low (released)
if (inputState == false){ //pin still low (off)
if (esp_log_timestamp() - timestampLow > minOffMs){ //pin in same state long enough
p_state = switchState::FALSE;
msPressed = timestampLow - timestampHigh; //calculate duration the button was pressed
state=false;
fallingEdge=true;
}
break;
case switchState::TRUE: //input confirmed low (pressed)
risingEdge = false; //reset edge event
if (gpio_get_level(gpio_num) == 1){ //pin high (off)
timestampHigh = esp_log_timestamp();
p_state = switchState::HIGH;
} else {
msPressed = esp_log_timestamp() - timestampLow; //update duration pressed
}
break;
case switchState::HIGH: //input recently switched to high (released)
if (gpio_get_level(gpio_num) == 1){ //pin still high (off)
if (esp_log_timestamp() - timestampHigh > minOffMs){ //pin in same state long enough
p_state = switchState::FALSE;
msPressed = timestampHigh - timestampLow; //calculate duration the button was pressed
state=false;
fallingEdge=true;
}
}else{
p_state = switchState::TRUE;
}
break;
}
}else{
p_state = switchState::TRUE;
}
break;
}
}

18
components/gpio/gpio_evaluateSwitch.hpp
View File

@ -18,21 +18,30 @@ extern "C"
//switch to VCC (inverted) and dont use internal pullup:
//gpio_evaluatedSwitch s3(GPIO_NUM_14 false, true);
enum class inputSource_t {GPIO, FUNCTION};
class gpio_evaluatedSwitch {
public:
//--- input ---
uint32_t minOnMs = 30;
uint32_t minOffMs = 30;
gpio_evaluatedSwitch( //constructor minimal (default parameters pullup=true, inverted=false)
//constructor minimal (default parameters pullup=true, inverted=false)
gpio_evaluatedSwitch(
gpio_num_t gpio_num_declare
);
gpio_evaluatedSwitch( //constructor with optional parameters
//constructor with optional parameters
gpio_evaluatedSwitch(
gpio_num_t gpio_num_declare,
bool pullup_declare,
bool inverted_declare=false
);
//constructor with a function as source for input state instead of a gpio pin
gpio_evaluatedSwitch(bool (*getInputStatePtr_f)(void), bool inverted_f=false);
//--- output --- TODO make readonly? (e.g. public section: const int& x = m_x;)
bool state = false;
bool risingEdge = false;
@ -47,12 +56,15 @@ class gpio_evaluatedSwitch {
gpio_num_t gpio_num;
bool pullup;
bool inverted;
bool (*getInputStatePtr)(void); //pointer to function for getting current input state
inputSource_t inputSource = inputSource_t::GPIO;
enum class switchState {TRUE, FALSE, LOW, HIGH};
switchState p_state = switchState::FALSE;
bool inputState = false;
uint32_t timestampLow = 0;
uint32_t timestampHigh = 0;
void init();
void initGpio();
};

2
connection-plan.drawio
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File diff suppressed because one or more lines are too long

BIN
connection-plan.drawio.pdf
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Binary file not shown.

1
main/CMakeLists.txt
View File

@ -6,6 +6,7 @@ idf_component_register(
"buzzer.cpp"
"vfd.cpp"
"display.cpp"
"switchesAnalog.cpp"
INCLUDE_DIRS
"."
)

18
main/config.cpp
View File

@ -3,13 +3,19 @@
//--- inputs ---
//create and configure objects for evaluated switches
gpio_evaluatedSwitch SW_START(GPIO_SW_START, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
gpio_evaluatedSwitch SW_RESET(GPIO_SW_RESET, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
gpio_evaluatedSwitch SW_SET(GPIO_SW_SET, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
gpio_evaluatedSwitch SW_PRESET1(GPIO_SW_PRESET1, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
gpio_evaluatedSwitch SW_PRESET2(GPIO_SW_PRESET2, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
gpio_evaluatedSwitch SW_PRESET3(GPIO_SW_PRESET3, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
//gpio_evaluatedSwitch sw_gpio_39(GPIO_NUM_39, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
gpio_evaluatedSwitch sw_gpio_34(GPIO_NUM_34, false, true); //pullup false, INVERTED (switch to 3V3, pulldown on pcb soldered)
gpio_evaluatedSwitch sw_gpio_32(GPIO_NUM_32, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
gpio_evaluatedSwitch sw_gpio_33(GPIO_NUM_33, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
gpio_evaluatedSwitch sw_gpio_25(GPIO_NUM_25, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
gpio_evaluatedSwitch sw_gpio_26(GPIO_NUM_26, true, false); //pullup true, not inverted (switch to GND, internal pullup used)
//--- switches connected to 4 sw to analog stripboard ---
//evaluated switches with function to obtain the current input state instead of gpio
gpio_evaluatedSwitch sw_gpio_analog_0(&switchesAnalog_getState_sw0);
gpio_evaluatedSwitch sw_gpio_analog_1(&switchesAnalog_getState_sw1);
gpio_evaluatedSwitch sw_gpio_analog_2(&switchesAnalog_getState_sw2);
gpio_evaluatedSwitch sw_gpio_analog_3(&switchesAnalog_getState_sw3);
//create buzzer object with no gap between beep events
buzzer_t buzzer(GPIO_BUZZER, 0);

57
main/config.hpp
View File

@ -4,6 +4,7 @@ extern "C" {
}
#include "gpio_evaluateSwitch.hpp"
#include "buzzer.hpp"
#include "switchesAnalog.hpp"
//===================================
@ -22,17 +23,34 @@ extern "C" {
//==================================
//===== define input gpio pins =====
//==== define analog input pins ====
//==================================
#define GPIO_SW_START GPIO_NUM_26
#define GPIO_SW_RESET GPIO_NUM_25
#define GPIO_SW_SET GPIO_NUM_33
#define GPIO_SW_PRESET1 GPIO_NUM_32
#define GPIO_SW_PRESET2 GPIO_NUM_34
#define GPIO_SW_PRESET3 GPIO_NUM_39
#define GPIO_POTI GPIO_NUM_36
#define ADC_CHANNEL_POTI ADC1_CHANNEL_0
#define GPIO_4SW_TO_ANALOG GPIO_NUM_39
#define ADC_CHANNEL_4SW_TO_ANALOG ADC1_CHANNEL_3 //gpio 39
//ADC1_CHANNEL_0 gpio36
//ADC1_CHANNEL_6 gpio_34
//ADC1_CHANNEL_3 gpio_39
//=====================================
//==== assign switches to objects =====
//=====================================
//see config.cpp for available evaluated switch objects
#define SW_START sw_gpio_26
#define SW_RESET sw_gpio_25
#define SW_SET sw_gpio_analog_0
#define SW_PRESET1 sw_gpio_analog_1
#define SW_PRESET2 sw_gpio_analog_2
#define SW_PRESET3 sw_gpio_analog_3
//unused but already available evaluated inputs
//#define ? sw_gpio_33
//#define ? sw_gpio_32
//#define ? sw_gpio_34
//--------------------------
@ -71,14 +89,21 @@ extern "C" {
//===== global variables =====
//============================
//create global evaluated switch objects
//--- inputs ---
//create objects for switches at bottom screw temerinals
extern gpio_evaluatedSwitch SW_START;
extern gpio_evaluatedSwitch SW_RESET;
extern gpio_evaluatedSwitch SW_SET;
extern gpio_evaluatedSwitch SW_PRESET1;
extern gpio_evaluatedSwitch SW_PRESET2;
extern gpio_evaluatedSwitch SW_PRESET3;
//--- switches on digital gpio pins ---
//extern gpio_evaluatedSwitch sw_gpio_39;
extern gpio_evaluatedSwitch sw_gpio_34;
extern gpio_evaluatedSwitch sw_gpio_32;
extern gpio_evaluatedSwitch sw_gpio_33;
extern gpio_evaluatedSwitch sw_gpio_25;
extern gpio_evaluatedSwitch sw_gpio_26;
//--- switches connected to 4-sw-to-analog stripboard ---
extern gpio_evaluatedSwitch sw_gpio_analog_0;
extern gpio_evaluatedSwitch sw_gpio_analog_1;
extern gpio_evaluatedSwitch sw_gpio_analog_2;
extern gpio_evaluatedSwitch sw_gpio_analog_3;
//create global buzzer object
extern buzzer_t buzzer;

25
main/control.cpp
View File

@ -23,27 +23,6 @@ QueueHandle_t init_encoder(rotary_encoder_info_t * info){
}
//=============================
//========= readAdc ===========
//=============================
//function for multisampling an anlog input
int readAdc(adc1_channel_t adc_channel, bool inverted = false) {
//make multiple measurements
int adc_reading = 0;
for (int i = 0; i < 16; i++) {
adc_reading += adc1_get_raw(adc_channel);
}
adc_reading = adc_reading / 16;
//return original or inverted result
if (inverted) {
return 4095 - adc_reading;
} else {
return adc_reading;
}
}
//====================
@ -218,7 +197,7 @@ void task_control(void *pvParameter)
//set target length to poti position when SET switch is pressed
if (SW_SET.state == true) {
//read adc
potiRead = readAdc(ADC_CHANNEL_POTI); //0-4095
potiRead = gpio_readAdc(ADC_CHANNEL_POTI); //0-4095
//scale to target length range
int lengthTargetNew = (float)potiRead / 4095 * 30000;
//apply hysteresis and round to whole meters //TODO optimize this
@ -326,7 +305,7 @@ void task_control(void *pvParameter)
case MANUAL: //manually control motor via preset buttons + poti
//read poti value
potiRead = readAdc(ADC_CHANNEL_POTI); //0-4095
potiRead = gpio_readAdc(ADC_CHANNEL_POTI); //0-4095
//scale poti to speed levels 0-3
uint8_t level = round( (float)potiRead / 4095 * 3 );
//exit manual mode if preset2 released

1
main/control.hpp
View File

@ -18,6 +18,7 @@ extern "C"
#include "config.hpp"
#include "gpio_evaluateSwitch.hpp"
#include "gpio_adc.hpp"
#include "buzzer.hpp"
#include "vfd.hpp"
#include "display.hpp"

4
main/main.cpp
View File

@ -14,6 +14,8 @@ extern "C"
#include "control.hpp"
#include "buzzer.hpp"
#include "switchesAnalog.hpp"
//=================================
//=========== functions ===========
@ -78,6 +80,7 @@ extern "C" void app_main()
//define loglevel
esp_log_level_set("*", ESP_LOG_INFO);
esp_log_level_set("buzzer", ESP_LOG_ERROR);
esp_log_level_set("switches-analog", ESP_LOG_WARN);
esp_log_level_set("control", ESP_LOG_INFO);
//create task for controlling the machine
@ -87,4 +90,5 @@ extern "C" void app_main()
//beep at startup
buzzer.beep(3, 70, 50);
}

103
main/switchesAnalog.cpp Normal file
View File

@ -0,0 +1,103 @@
#include "switchesAnalog.hpp"
#define CHECK_BIT(var,pos) (((var)>>(pos)) & 1) //TODO duplicate code: same macro already used in vfd.cpp
//=====================
//===== Variables =====
//=====================
static const char *TAG = "switches-analog"; //tag for logging
int diffMin = 4095;
int adcValue;
int match_index = 0;
//array that describes voltages for all combinations of the 4 inputs
const int lookup_voltages[] = {
//ADC, S3 S2 S1 S0
4095, //0000
3780, //0001
3390, //0010
3040, //0011
2760, //0100
2542, //0101
2395, //0110
2225, //0111
1964, //1000
1845, //1001
1762, //1010
1664, //1011
1573, //1100
1485, //1101
1432, //1110
1363 //1111
};
//===========================
//===== handle function =====
//===========================
//handle demuxing of 4 switches from 1 adc (has to be run repeatedly)
void handle(){
//read current voltage
adcValue = gpio_readAdc(ADC_CHANNEL_4SW_TO_ANALOG);
ESP_LOGI(TAG, "voltage read: %d", adcValue);
//find closest match in lookup table
diffMin = 4095; //reset diffMin each run
for (int i=0; i<16; i++){
int diff = fabs(adcValue - lookup_voltages[i]);
if (diff < diffMin){
diffMin = diff;
match_index = i;
}
}
//get bool values for each input from matched index
bool s0 = CHECK_BIT(match_index, 0);
bool s1 = CHECK_BIT(match_index, 1);
bool s2 = CHECK_BIT(match_index, 2);
bool s3 = CHECK_BIT(match_index, 3);
//bool s1 = ((match_index & 0b1000) == 0b1000);
//bool s2 = ((match_index & 0b0100) == 0b0100);
//bool s3 = ((match_index & 0b0010) == 0b0010);
//bool s4 = ((match_index & 0b0001) == 0b0001);
//log results
ESP_LOGI(TAG, "adcRead: %d, closest-match: %d, diff: %d, index: %d, switches: %d%d%d%d",
adcValue, lookup_voltages[match_index], diffMin, match_index, (int)s3, (int)s2, (int)s1, (int)s0);
}
//====================
//===== getState =====
//====================
//get state of certain switch (0-3)
bool switchesAnalog_getState(int swNumber){
//run handle function to obtain all current input states
handle();
//get relevant bit
bool state = CHECK_BIT(match_index, swNumber);
ESP_LOGI(TAG, "returned state of switch No. %d = %i", swNumber, (int)state);
return state;
}
bool switchesAnalog_getState_sw0(){
return switchesAnalog_getState(0);
}
bool switchesAnalog_getState_sw1(){
return switchesAnalog_getState(1);
}
bool switchesAnalog_getState_sw2(){
return switchesAnalog_getState(2);
}
bool switchesAnalog_getState_sw3(){
return switchesAnalog_getState(3);
}

21
main/switchesAnalog.hpp Normal file
View File

@ -0,0 +1,21 @@
#pragma once
extern "C"
{
#include <stdio.h>
#include <freertos/FreeRTOS.h>
#include "esp_log.h"
#include "driver/adc.h"
#include <math.h>
}
#include "config.hpp"
#include "gpio_adc.hpp"
//get current state of certain switch
bool switchesAnalog_getState(int swNumber);
bool switchesAnalog_getState_sw0();
bool switchesAnalog_getState_sw1();
bool switchesAnalog_getState_sw2();
bool switchesAnalog_getState_sw3();

75
pcb/4swToAdc.kicad_prl Normal file
View File

@ -0,0 +1,75 @@
{
"board": {
"active_layer": 0,
"active_layer_preset": "",
"auto_track_width": true,
"hidden_nets": [],
"high_contrast_mode": 0,
"net_color_mode": 1,
"opacity": {
"pads": 1.0,
"tracks": 1.0,
"vias": 1.0,
"zones": 0.6
},
"ratsnest_display_mode": 0,
"selection_filter": {
"dimensions": true,
"footprints": true,
"graphics": true,
"keepouts": true,
"lockedItems": true,
"otherItems": true,
"pads": true,
"text": true,
"tracks": true,
"vias": true,
"zones": true
},
"visible_items": [
0,
1,
2,
3,
4,
5,
8,
9,
10,
11,
12,
13,
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21,
22,
23,
24,
25,
26,
27,
28,
29,
30,
32,
33,
34,
35,
36
],
"visible_layers": "fffffff_ffffffff",
"zone_display_mode": 0
},
"meta": {
"filename": "4-switches-to-adc.kicad_prl",
"version": 3
},
"project": {
"files": []
}
}

294
pcb/4swToAdc.kicad_pro Normal file
View File

@ -0,0 +1,294 @@
{
"board": {
"layer_presets": []
},
"boards": [],
"cvpcb": {
"equivalence_files": []
},
"erc": {
"erc_exclusions": [],
"meta": {
"version": 0
},
"pin_map": [
[
0,
0,
0,
0,
0,
0,
1,
0,
0,
0,
0,
2
],
[
0,
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],
[
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],
[
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],
[
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[
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],
[
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],
[
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pcb/4swToAdc.kicad_sch Normal file
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