Jurica Resetar / Mbed OS acd52832_Car_battery_ch

A simple example for analog input and EPD usage.

Dependencies:   GDEP015OC1 acn_nrf52_saadc aconno_bsp

Fork of acd52832_3_Analog_In by aconno dev team

main.cpp@9:eef3ea422bfe, 2017-07-07 (annotated)

Committer:
jurica238814
Date:
Fri Jul 07 11:50:24 2017 +0000
Revision:
9:eef3ea422bfe
Parent:
8:c9f0aea93832
Child:
10:8a9eb611624e
4 new images added for charged battery. Mbed-os added.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jurica238814 0:dc96b5c8e3f6 1 /* Copyright (c) 2017 Aconno. All Rights Reserved.
jurica238814 0:dc96b5c8e3f6 2 *
jurica238814 0:dc96b5c8e3f6 3 * Licensees are granted free, non-transferable use of the information. NO
jurica238814 0:dc96b5c8e3f6 4 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
jurica238814 0:dc96b5c8e3f6 5 * the file.
jurica238814 0:dc96b5c8e3f6 6 */
jurica238814 0:dc96b5c8e3f6 7
jurica238814 0:dc96b5c8e3f6 8 #include "mbed.h"
jurica238814 0:dc96b5c8e3f6 9 #include "acd52832_bsp.h"
jurica238814 0:dc96b5c8e3f6 10 #include "GDEP015OC1.h"
jurica238814 5:6566725c8835 11 #include "pictures.h"
jurica238814 0:dc96b5c8e3f6 12
jurica238814 6:e848c82b5248 13 #define DEBUG (0)
jurica238814 6:e848c82b5248 14 #define ADC_MAX_VALUE (4095)
jurica238814 5:6566725c8835 15 #define ADC_REF_VOLTAGE (3.6)
jurica238814 8:c9f0aea93832 16 #define VOLTAGE_DIVIDER_RATION (4.42)
jurica238814 8:c9f0aea93832 17 #define VOLTAGE_LOSS (0.4)
jurica238814 5:6566725c8835 18 #define CURRENT_FACTOR (36.0)
jurica238814 9:eef3ea422bfe 19 #define BATTERY_CHARGED_V (13)
jurica238814 8:c9f0aea93832 20 #define BATTERY_MAX_V (12.6)
jurica238814 8:c9f0aea93832 21 #define BATTERY_MIN_V (11.85)
jurica238814 8:c9f0aea93832 22 #define BATTERY_STEP (0.15)
jurica238814 6:e848c82b5248 23 #define QUICK_CURRENT (float)(0.8)
jurica238814 6:e848c82b5248 24 #define LOW_CURRENT (float)(0.4)
jurica238814 6:e848c82b5248 25 #define NO_CURRENT (float)(0.01)
jurica238814 6:e848c82b5248 26 #define NUM_OF_MEASUREMENTS (20)
jurica238814 6:e848c82b5248 27 #define NO_CURRENT_STATE (0)
jurica238814 6:e848c82b5248 28 #define LOW_CURRENT_STATE (1)
jurica238814 6:e848c82b5248 29 #define QUICK_CURRENT_STATE (2)
jurica238814 5:6566725c8835 30
jurica238814 9:eef3ea422bfe 31 #define _CH_4 (9)
jurica238814 9:eef3ea422bfe 32 #define _CH_3 (8)
jurica238814 9:eef3ea422bfe 33 #define _CH_2 (7)
jurica238814 9:eef3ea422bfe 34 #define _CH_1 (6)
jurica238814 6:e848c82b5248 35 #define _BS_5 (5)
jurica238814 6:e848c82b5248 36 #define _BS_4 (4)
jurica238814 6:e848c82b5248 37 #define _BS_3 (3)
jurica238814 6:e848c82b5248 38 #define _BS_2 (2)
jurica238814 6:e848c82b5248 39 #define _BS_1 (1)
jurica238814 6:e848c82b5248 40 #define _BS_E (0)
jurica238814 0:dc96b5c8e3f6 41
jurica238814 0:dc96b5c8e3f6 42 SPI spi(PIN_EPD_MOSI, NC, PIN_EPD_SCK, NC);
jurica238814 0:dc96b5c8e3f6 43 GDEP015OC1 epd = GDEP015OC1(spi, PIN_EPD_CS, PIN_EPD_DC, PIN_EPD_RST, PIN_EPD_BUSY);
jurica238814 0:dc96b5c8e3f6 44
jurica238814 0:dc96b5c8e3f6 45 AnalogIn battery (p28);
jurica238814 0:dc96b5c8e3f6 46 AnalogIn usb1 (p29);
jurica238814 0:dc96b5c8e3f6 47 AnalogIn usb2 (p30);
jurica238814 0:dc96b5c8e3f6 48
jurica238814 6:e848c82b5248 49 uint8_t get_battery_level(float battery_voltage){
jurica238814 9:eef3ea422bfe 50 if (battery_voltage > BATTERY_CHARGED_V * 4){
jurica238814 9:eef3ea422bfe 51 return _CH_4;
jurica238814 9:eef3ea422bfe 52 }
jurica238814 9:eef3ea422bfe 53 else if ((battery_voltage > BATTERY_CHARGED_V + BATTERY_STEP * 3) && (battery_voltage > BATTERY_CHARGED_V + BATTERY_STEP * 4)){
jurica238814 9:eef3ea422bfe 54 return _CH_3;
jurica238814 9:eef3ea422bfe 55 }
jurica238814 9:eef3ea422bfe 56 else if ((battery_voltage > BATTERY_CHARGED_V + BATTERY_STEP * 2) && (battery_voltage > BATTERY_CHARGED_V + BATTERY_STEP * 3)){
jurica238814 9:eef3ea422bfe 57 return _CH_2;
jurica238814 9:eef3ea422bfe 58 }
jurica238814 9:eef3ea422bfe 59 else if ((battery_voltage > BATTERY_CHARGED_V + BATTERY_STEP * 1) && (battery_voltage > BATTERY_CHARGED_V + BATTERY_STEP * 2)){
jurica238814 9:eef3ea422bfe 60 return _CH_1;
jurica238814 9:eef3ea422bfe 61 }
jurica238814 9:eef3ea422bfe 62 else if((battery_voltage > BATTERY_MAX_V - BATTERY_STEP) && (battery_voltage < BATTERY_CHARGED_V)){
jurica238814 6:e848c82b5248 63 return _BS_5;
jurica238814 6:e848c82b5248 64 }
jurica238814 6:e848c82b5248 65 else if((battery_voltage > BATTERY_MAX_V - BATTERY_STEP * 2) && (battery_voltage < BATTERY_MAX_V - BATTERY_STEP * 1)){
jurica238814 6:e848c82b5248 66 return _BS_4;
jurica238814 6:e848c82b5248 67 }
jurica238814 6:e848c82b5248 68 else if((battery_voltage > BATTERY_MAX_V - BATTERY_STEP * 3) && (battery_voltage < BATTERY_MAX_V - BATTERY_STEP * 2)){
jurica238814 6:e848c82b5248 69 return _BS_3;
jurica238814 6:e848c82b5248 70 }
jurica238814 6:e848c82b5248 71 else if((battery_voltage > BATTERY_MAX_V - BATTERY_STEP * 4) && (battery_voltage < BATTERY_MAX_V - BATTERY_STEP * 3)){
jurica238814 6:e848c82b5248 72 return _BS_2;
jurica238814 6:e848c82b5248 73 }
jurica238814 6:e848c82b5248 74 else if((battery_voltage > BATTERY_MAX_V - BATTERY_STEP * 5) && (battery_voltage < BATTERY_MAX_V - BATTERY_STEP * 4)){
jurica238814 6:e848c82b5248 75 return _BS_1;
jurica238814 6:e848c82b5248 76 }
jurica238814 6:e848c82b5248 77 else if(battery_voltage < BATTERY_MAX_V - BATTERY_STEP * 5){
jurica238814 6:e848c82b5248 78 return _BS_E;
jurica238814 6:e848c82b5248 79 }
jurica238814 6:e848c82b5248 80 return 0;
jurica238814 6:e848c82b5248 81 }
jurica238814 6:e848c82b5248 82
jurica238814 6:e848c82b5248 83 uint8_t get_current_level(float current_value, uint8_t usb_state){
jurica238814 6:e848c82b5248 84 if(current_value < NO_CURRENT)
jurica238814 6:e848c82b5248 85 return NO_CURRENT_STATE;
jurica238814 6:e848c82b5248 86 else if(current_value > NO_CURRENT && current_value < LOW_CURRENT)
jurica238814 6:e848c82b5248 87 return LOW_CURRENT_STATE;
jurica238814 6:e848c82b5248 88 else if(current_value > LOW_CURRENT && current_value < QUICK_CURRENT){
jurica238814 6:e848c82b5248 89 // Determine current charger state depends on previous state
jurica238814 6:e848c82b5248 90 if(usb_state == LOW_CURRENT_STATE)
jurica238814 6:e848c82b5248 91 return LOW_CURRENT_STATE;
jurica238814 6:e848c82b5248 92 else if(usb_state == QUICK_CURRENT_STATE)
jurica238814 6:e848c82b5248 93 return QUICK_CURRENT_STATE;
jurica238814 6:e848c82b5248 94 }
jurica238814 6:e848c82b5248 95 else if(current_value > QUICK_CURRENT)
jurica238814 6:e848c82b5248 96 return QUICK_CURRENT_STATE;
jurica238814 6:e848c82b5248 97 return NO_CURRENT_STATE;
jurica238814 6:e848c82b5248 98 }
jurica238814 6:e848c82b5248 99
jurica238814 0:dc96b5c8e3f6 100 int main(){
jurica238814 5:6566725c8835 101 char low_string[25] = "LOW";
jurica238814 5:6566725c8835 102 char quick_string[25] = "QUICK";
jurica238814 4:f6f94ef38e6a 103 float adc1_mean=0, adc2_mean=0, adc3_mean=0;
jurica238814 5:6566725c8835 104 float battery_voltage = 0;
jurica238814 5:6566725c8835 105 float usb1_current = 0, usb2_current = 0;
jurica238814 4:f6f94ef38e6a 106 int count = 0;
jurica238814 6:e848c82b5248 107 uint8_t battery_level = 0;
jurica238814 6:e848c82b5248 108 uint8_t old_battery_level;
jurica238814 6:e848c82b5248 109 uint8_t usb1_current_state = 0, usb2_current_state = 0;
jurica238814 6:e848c82b5248 110 uint8_t usb1_old_state = 0, usb2_old_state = 0;
jurica238814 6:e848c82b5248 111 uint8_t change_flag = 1;
jurica238814 6:e848c82b5248 112
jurica238814 6:e848c82b5248 113 #if DEBUG
jurica238814 6:e848c82b5248 114 char buffer[25] = {0};
jurica238814 8:c9f0aea93832 115 float old_battery_voltage = 0;
jurica238814 8:c9f0aea93832 116 float old_usb1_current = 0;
jurica238814 8:c9f0aea93832 117 float old_usb2_current = 0;
jurica238814 6:e848c82b5248 118 #endif
jurica238814 4:f6f94ef38e6a 119
jurica238814 4:f6f94ef38e6a 120 NRF_SAADC->RESOLUTION = 0x00000002; // Set 12b resolution
jurica238814 5:6566725c8835 121
jurica238814 5:6566725c8835 122 epd.empty();
jurica238814 5:6566725c8835 123 epd.writeFull();
jurica238814 6:e848c82b5248 124
jurica238814 0:dc96b5c8e3f6 125 while(true){
jurica238814 0:dc96b5c8e3f6 126
jurica238814 4:f6f94ef38e6a 127 adc1_mean += battery.read_u16();
jurica238814 4:f6f94ef38e6a 128 adc2_mean += usb1.read_u16();
jurica238814 4:f6f94ef38e6a 129 adc3_mean += usb2.read_u16();
jurica238814 4:f6f94ef38e6a 130 count ++;
jurica238814 8:c9f0aea93832 131
jurica238814 6:e848c82b5248 132 if (count == NUM_OF_MEASUREMENTS){
jurica238814 6:e848c82b5248 133
jurica238814 6:e848c82b5248 134 adc1_mean /= NUM_OF_MEASUREMENTS;
jurica238814 6:e848c82b5248 135 adc2_mean /= NUM_OF_MEASUREMENTS;
jurica238814 6:e848c82b5248 136 adc3_mean /= NUM_OF_MEASUREMENTS;
jurica238814 5:6566725c8835 137 count = 0;
jurica238814 8:c9f0aea93832 138
jurica238814 8:c9f0aea93832 139 battery_voltage = adc1_mean*(ADC_REF_VOLTAGE/ADC_MAX_VALUE)*VOLTAGE_DIVIDER_RATION + VOLTAGE_LOSS;
jurica238814 8:c9f0aea93832 140 usb1_current = (adc2_mean*(ADC_REF_VOLTAGE/ADC_MAX_VALUE)) * CURRENT_FACTOR;
jurica238814 8:c9f0aea93832 141 usb2_current = (adc3_mean*(ADC_REF_VOLTAGE/ADC_MAX_VALUE)) * CURRENT_FACTOR;
jurica238814 6:e848c82b5248 142
jurica238814 6:e848c82b5248 143 battery_level = get_battery_level(battery_voltage);
jurica238814 8:c9f0aea93832 144 if(battery_level != old_battery_level || change_flag){
jurica238814 8:c9f0aea93832 145
jurica238814 6:e848c82b5248 146 old_battery_level = battery_level;
jurica238814 6:e848c82b5248 147 change_flag = 1;
jurica238814 6:e848c82b5248 148 switch(battery_level){
jurica238814 6:e848c82b5248 149 case(0):{
jurica238814 6:e848c82b5248 150 for(uint16_t x=0;x<5000;x++)
jurica238814 6:e848c82b5248 151 epd.fill(BS_E[x], x);
jurica238814 6:e848c82b5248 152 break;
jurica238814 6:e848c82b5248 153 }
jurica238814 6:e848c82b5248 154 case(1):{
jurica238814 6:e848c82b5248 155 for(uint16_t x=0;x<5000;x++)
jurica238814 6:e848c82b5248 156 epd.fill(BS_1[x], x);
jurica238814 6:e848c82b5248 157 break;
jurica238814 6:e848c82b5248 158 }
jurica238814 6:e848c82b5248 159 case(2):{
jurica238814 6:e848c82b5248 160 for(uint16_t x=0;x<5000;x++)
jurica238814 6:e848c82b5248 161 epd.fill(BS_2[x], x);
jurica238814 6:e848c82b5248 162 break;
jurica238814 6:e848c82b5248 163 }
jurica238814 6:e848c82b5248 164 case(3):{
jurica238814 6:e848c82b5248 165 for(uint16_t x=0;x<5000;x++)
jurica238814 6:e848c82b5248 166 epd.fill(BS_3[x], x);
jurica238814 6:e848c82b5248 167 break;
jurica238814 6:e848c82b5248 168 }
jurica238814 6:e848c82b5248 169 case(4):{
jurica238814 6:e848c82b5248 170 for(uint16_t x=0;x<5000;x++)
jurica238814 6:e848c82b5248 171 epd.fill(BS_4[x], x);
jurica238814 6:e848c82b5248 172 break;
jurica238814 6:e848c82b5248 173 }
jurica238814 6:e848c82b5248 174 case(5):{
jurica238814 6:e848c82b5248 175 for(uint16_t x=0;x<5000;x++)
jurica238814 6:e848c82b5248 176 epd.fill(BS_5[x], x);
jurica238814 6:e848c82b5248 177 break;
jurica238814 6:e848c82b5248 178 }
jurica238814 9:eef3ea422bfe 179 case(6):{
jurica238814 9:eef3ea422bfe 180 for(uint16_t x=0;x<5000;x++)
jurica238814 9:eef3ea422bfe 181 epd.fill(charged_1[x], x);
jurica238814 9:eef3ea422bfe 182 break;
jurica238814 9:eef3ea422bfe 183 }
jurica238814 9:eef3ea422bfe 184 case(7):{
jurica238814 9:eef3ea422bfe 185 for(uint16_t x=0;x<5000;x++)
jurica238814 9:eef3ea422bfe 186 epd.fill(charged_2[x], x);
jurica238814 9:eef3ea422bfe 187 break;
jurica238814 9:eef3ea422bfe 188 }
jurica238814 9:eef3ea422bfe 189 case(8):{
jurica238814 9:eef3ea422bfe 190 for(uint16_t x=0;x<5000;x++)
jurica238814 9:eef3ea422bfe 191 epd.fill(charged_3[x], x);
jurica238814 9:eef3ea422bfe 192 break;
jurica238814 9:eef3ea422bfe 193 }
jurica238814 9:eef3ea422bfe 194 case(9):{
jurica238814 9:eef3ea422bfe 195 for(uint16_t x=0;x<5000;x++)
jurica238814 9:eef3ea422bfe 196 epd.fill(charged_4[x], x);
jurica238814 9:eef3ea422bfe 197 break;
jurica238814 9:eef3ea422bfe 198 }
jurica238814 6:e848c82b5248 199 default: break;
jurica238814 6:e848c82b5248 200 }
jurica238814 5:6566725c8835 201 epd.write();
jurica238814 5:6566725c8835 202 }
jurica238814 5:6566725c8835 203
jurica238814 6:e848c82b5248 204 usb1_current_state = get_current_level(usb1_current, usb1_old_state);
jurica238814 6:e848c82b5248 205 usb2_current_state = get_current_level(usb2_current, usb2_old_state);
jurica238814 6:e848c82b5248 206
jurica238814 6:e848c82b5248 207 if((usb1_old_state != usb1_current_state) || change_flag){
jurica238814 6:e848c82b5248 208 usb1_old_state = usb1_current_state;
jurica238814 6:e848c82b5248 209 switch(usb1_current_state){
jurica238814 6:e848c82b5248 210 case(NO_CURRENT_STATE):{
jurica238814 6:e848c82b5248 211 epd.writeString(quick_string, 25, 180, 1); // Delete the old state
jurica238814 6:e848c82b5248 212 epd.writeString(low_string, 25, 180, 1);
jurica238814 6:e848c82b5248 213 break;
jurica238814 6:e848c82b5248 214 }
jurica238814 6:e848c82b5248 215 case(LOW_CURRENT_STATE):{
jurica238814 6:e848c82b5248 216 epd.writeString(quick_string, 25, 180, 1); // Delete the old state
jurica238814 6:e848c82b5248 217 epd.writeString(low_string, 25, 180, 0);
jurica238814 6:e848c82b5248 218 break;
jurica238814 6:e848c82b5248 219 }
jurica238814 6:e848c82b5248 220 case(QUICK_CURRENT_STATE):{
jurica238814 6:e848c82b5248 221 epd.writeString(low_string, 25, 180, 1); // Delete the old state
jurica238814 6:e848c82b5248 222 epd.writeString(quick_string, 25, 180, 0);
jurica238814 6:e848c82b5248 223 break;
jurica238814 6:e848c82b5248 224 }
jurica238814 6:e848c82b5248 225 default: break;
jurica238814 6:e848c82b5248 226 }
jurica238814 6:e848c82b5248 227 epd.write(); // Write string to the EPD
jurica238814 5:6566725c8835 228 }
jurica238814 5:6566725c8835 229
jurica238814 6:e848c82b5248 230 if((usb2_old_state != usb2_current_state) || change_flag){
jurica238814 6:e848c82b5248 231 usb2_old_state = usb2_current_state;
jurica238814 6:e848c82b5248 232 switch(usb2_current_state){
jurica238814 6:e848c82b5248 233 case(NO_CURRENT_STATE):{
jurica238814 6:e848c82b5248 234 epd.writeString(low_string, 135, 180, 1); // Delete the old state
jurica238814 6:e848c82b5248 235 epd.writeString(quick_string, 135, 180, 1); // Delete the old state
jurica238814 6:e848c82b5248 236 break;
jurica238814 6:e848c82b5248 237 }
jurica238814 6:e848c82b5248 238 case(LOW_CURRENT_STATE):{
jurica238814 6:e848c82b5248 239 epd.writeString(quick_string, 135, 180, 1); // Delete the old state
jurica238814 6:e848c82b5248 240 epd.writeString(low_string, 135, 180, 0);
jurica238814 6:e848c82b5248 241 break;
jurica238814 6:e848c82b5248 242 }
jurica238814 6:e848c82b5248 243 case(QUICK_CURRENT_STATE):{
jurica238814 6:e848c82b5248 244 epd.writeString(low_string, 135, 180, 1); // Delete the old state
jurica238814 6:e848c82b5248 245 epd.writeString(quick_string, 135, 180, 0);
jurica238814 6:e848c82b5248 246 break;
jurica238814 6:e848c82b5248 247 }
jurica238814 6:e848c82b5248 248 default: break;
jurica238814 6:e848c82b5248 249 }
jurica238814 6:e848c82b5248 250 epd.write(); // Write string to the EPD
jurica238814 6:e848c82b5248 251 change_flag = 0;
jurica238814 5:6566725c8835 252 }
jurica238814 6:e848c82b5248 253
jurica238814 4:f6f94ef38e6a 254
jurica238814 8:c9f0aea93832 255 #if DEBUG
jurica238814 5:6566725c8835 256 // Print voltage and current values in debug mode
jurica238814 8:c9f0aea93832 257 sprintf(buffer, "Battery: %5.5fV", old_battery_voltage); // Create a string
jurica238814 8:c9f0aea93832 258 epd.writeString(buffer,25,95,1); // Write new data to the buffer
jurica238814 8:c9f0aea93832 259 epd.write(); // Write string to the EPD
jurica238814 8:c9f0aea93832 260 old_battery_voltage = battery_voltage;
jurica238814 8:c9f0aea93832 261
jurica238814 8:c9f0aea93832 262 sprintf(buffer, "Battery: %5.5fV", battery_voltage); // Create a string
jurica238814 5:6566725c8835 263 epd.writeString(buffer,25,95,0); // Write new data to the buffer
jurica238814 8:c9f0aea93832 264
jurica238814 8:c9f0aea93832 265 sprintf(buffer, "USB1: %5.5f", old_usb1_current); // Create a string
jurica238814 8:c9f0aea93832 266 epd.writeString(buffer,5,190,1); // Write new data to the buffer
jurica238814 8:c9f0aea93832 267 old_usb1_current = usb1_current;
jurica238814 8:c9f0aea93832 268 sprintf(buffer, "USB1: %5.5f", usb1_current); // Create a string
jurica238814 5:6566725c8835 269 epd.writeString(buffer,5,190,0); // Write new data to the buffer
jurica238814 6:e848c82b5248 270
jurica238814 8:c9f0aea93832 271 sprintf(buffer, "USB2: %5.5fA", old_usb2_current); // Create a string
jurica238814 8:c9f0aea93832 272 epd.writeString(buffer,105,190,1); // Write new data to the buffer
jurica238814 8:c9f0aea93832 273 old_usb2_current = usb2_current;
jurica238814 8:c9f0aea93832 274 sprintf(buffer, "USB2: %5.5fA", usb2_current); // Create a string
jurica238814 5:6566725c8835 275 epd.writeString(buffer,105,190,0); // Write new data to the buffer
jurica238814 8:c9f0aea93832 276
jurica238814 6:e848c82b5248 277 epd.write();
jurica238814 5:6566725c8835 278 #endif
jurica238814 4:f6f94ef38e6a 279
jurica238814 4:f6f94ef38e6a 280 adc1_mean = 0;
jurica238814 4:f6f94ef38e6a 281 adc2_mean = 0;
jurica238814 4:f6f94ef38e6a 282 adc3_mean = 0;
jurica238814 4:f6f94ef38e6a 283 }
jurica238814 0:dc96b5c8e3f6 284 }
jurica238814 0:dc96b5c8e3f6 285 }