/* MDS Oct 22
* TeensyLogger - a high speed data logger initially intended to record current profile for Gerald's Bumper Car
*
* The objective is to use a current trnasformer (CT) to measure the current taken by a car on the track to assess
* real load current and, in particular, overload current at motor start up. A 1v/100A CT provides an analogue voltage
* to the Teensy 4.1. This is sampled at high rate (tbc but nominally 500usec between samples) for 10seconds and stored
* on the T4.1's SD card. A Bluetooth link provides a means to start/stop recording and replay the data using a mobile phone.
*
Start points are:
20samples per 50Hz 1/2 cycle (0.5usec.)
steady state motor current 6.25A (500W at 80v)
Overload/start up motor current 62.5A (x10)
Analogue input resolution = 3/3v/1025 = 3.22mV
1V/100A = 10mV/A
input FSD = 3.3V = 330A (may exceed CT's ability or linearity)
to minimise 'lost time/data' whilst data is saved, samples will have to be saved on batches/blocks (using SdFat and possibly PIFFS)
This example code is in the public domain.
*/
int Tstart;//recording start time reference
int Ival = 500;//current value (0 - 1024)
int cnt;
int led = 13;
bool LED = LOW;
elapsedMillis whiletime;
DataT = 10000;//sets the recording time (in ms)
void setup()
{
// initialize the digital pin as an output.
pinMode(led, OUTPUT);
Serial.begin(9600);
Serial.print("getting started.....");
}
void loop()
//loop structure contains:
//inputs via BT to start recording/saving samples, replay data to BT for display
//a 10sec 'do..while' call to collect samples and store them
{
Tstart = whiletime;
cnt = 0;
//set the LED to show recording is activated
//collect and save samples
while (whiletime <= Tstart + DataT){
Ival = analogRead(0);
cnt = cnt + 1;
}
Serial.print("out of while.....");
Serial.print("analog 0 is: ");
Serial.println(Ival);
Serial.print("Number of reads in 10sec. = ");
Serial.println(cnt);
if(LED == HIGH){
digitalWrite(led, LOW);
LED = LOW;
}
else {
digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
LED = HIGH;
}
}C:\T_Drive\tCode\FORUM\CompileTest\CompileTest.ino:30:1: error: 'DataT' does not name a type
DataT = 10000;//sets the recording time (in ms)int Ival = 500;//current value (0 - 1024)
int cnt;
int led = 13;
elapsedMillis whiletime;
uint32_t DataT = 10000;//sets the recording time (in ms)
void setup()
{
// initialize the digital pin as an output.
pinMode(led, OUTPUT);
Serial.begin(9600);
while (!Serial && millis() < 4000 );
Serial.println("\n" __FILE__ " " __DATE__ " " __TIME__);
Serial.print("getting started.....");
}
void loop()
//loop structure contains:
//inputs via BT to start recording/saving samples, replay data to BT for display
//a 10sec 'do..while' call to collect samples and store them
{
whiletime = 0;
cnt = 0;
//set the LED to show recording is activated
//collect and save samples
while (whiletime <= DataT) {
Ival = analogRead(0);
cnt = cnt + 1;
}
Serial.print("out of while.....");
Serial.print("analog 0 is: ");
Serial.println(Ival);
Serial.print("Number of reads in 10sec. = ");
Serial.println(cnt);
digitalToggle(led);
}C:\T_Drive\tCode\FORUM\CompileTest\CompileTest.ino Nov 2 2022 14:29:53
getting started.....out of while.....analog 0 is: 13
Number of reads in 10sec. = 569754
out of while.....analog 0 is: 13
Number of reads in 10sec. = 569754
...Memory Usage on Teensy MicroMod:
FLASH: code:134700, data:43016, headers:8648 free for files:16328708
RAM1: variables:70848, code:129096, padding:1976 free for local variables:322368
RAM2: variables:12384 free for malloc/new:511904
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-tools\\0.58.2/stdout_redirect" "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-F648251CB6BEFB58E6D8C6A22AB256FD/USBHost_viewer.ino.lst" "C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\\11.3.1-beta1/arm/bin/arm-none-eabi-objdump" -d -S -C "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-F648251CB6BEFB58E6D8C6A22AB256FD/USBHost_viewer.ino.elf"
Multiple libraries were found for "USBHost_t36.h"
Used: D:\github\USBHost_t36
Not used: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.58.2\libraries\USBHost_t36
Multiple libraries were found for "SdFat.h"
Used: D:\github\SdFat
Not used: C:\Users\kurte\Documents\Arduino\libraries\SdFat_-_Adafruit_Fork
Not used: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.58.2\libraries\SdFat
Using library USBHost_t36 at version 0.2 in folder: D:\github\USBHost_t36
Using library SdFat at version 2.1.2 in folder: D:\github\SdFat
Using library SPI at version 1.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.58.2\libraries\SPI
Using library EEPROM at version 2.0 in folder: C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\hardware\avr\0.58.2\libraries\EEPROM
Using library ILI9341_t3n at version 1.1.0 in folder: D:\github\ili9341_t3n
"C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\tools\teensy-tools\0.58.2/teensy_post_compile" "-file=USBHost_viewer.ino" "-path=C:\Users\kurte\AppData\Local\Temp\arduino-sketch-F648251CB6BEFB58E6D8C6A22AB256FD" "-tools=C:\Users\kurte\AppData\Local\Arduino15\packages\teensy\tools\teensy-tools\0.58.2" "-board=TEENSY_MICROMOD" -reboot "-port=usb:0/140000/0/8/1/1" "-portlabel={serial.port.label}" "-portprotocol={serial.port.protocol}"