RoadTest: Apply to review the ams OSRAM AS1170 Evaluation Kit
Author: rsc
Creation date:
Evaluation Type: Evaluation Boards
Did you receive all parts the manufacturer stated would be included in the package?: False
What other parts do you consider comparable to this product?: Most high power laser modules have a driver board, however, they don't allow user configuration and control to this level.
What were the biggest problems encountered?: A lack of basic code flowchart and an AS1170 state diagram made it difficult to follow the software functions at first. The AS1170 GUI PC app is ok as a start, but can be frustrating when it doesn't work properly.
Detailed Review:
Review of the ams OSRAM AS1170 High Power LED and Vertical Cavity Surface Emitting Laser (VCSEL) Evaluation Kit
I received the following so far:
I did not yet receive:
I downloaded and installed
Here is the kit.
The initial attempt at evaluating the kit was a bit frustrating.
The AS1170-GUI PC software has a few problems. It works sometimes, sometimes not at all. To diagnose what the problem is, I need to dive deeper into the software interface.
The AS1170 IC is a LED driver with two outputs that can source up to 1A on each output. The basic AS1170 IC block diagram is shown below.
The AS1170 is controlled using the I2C bus by loading various registers per the following table.
The AS1170-GUI PC program talks to the ESP32 through the USB serial interface using read and write commands, and then the ESP32 transfers the register data to/from the OSRAM board via the I2C bus.
I soldered up a small interface board to plug into the OSRAM board via the 8-pin header so I could connect some visible LEDs and disconnect the IR on-board LEDs.
My intent is to eventually connect the OSRAM AS1170 board to some CNC laser modules.
Below is the current CNC laser driver board.
The AS1170 user manual isn't totally clear as to how the register settings control the driver output modes.
In the AS1170 EVK manual there are a few example configurations.
AS1170_EVK_QG001040_2-00.pdf
\https://look.ams-osram.com/m/1ad89354fc528e75/original/AS1170-EVK-QG001040-Guide-2-00.pdf
In the AS1170 IC datasheet there is much more information about all the registers and values.
AS1170-High-current-LED-VCSEL-driver.pdf
https://look.ams-osram.com/m/360a4e139e632474/original/AS1170-High-current-LED-VCSEL-driver.pdf
To give myself a jumpstart on how the OSRAM GUI PC app was configuring the board, I used wireshark to monitor the USB bus and log the data transfers.
_ws.col.info == "URB_BULK out" _ws.col.info == "URB_BULK out" OUT_on 0000 1b 00 e0 01 56 57 85 a9 ff ff 00 00 00 00 09 00 ....VW.......... 0010 00 01 00 06 00 02 03 0e 00 00 00 77 72 69 74 65 ...........write 0020 2c 36 2c 32 35 2c 2d 31 0a ,6,25,-1. OUT_off 0000 1b 00 e0 89 2d 50 85 a9 ff ff 00 00 00 00 09 00 ....-P.......... 0010 00 01 00 06 00 02 03 0e 00 00 00 77 72 69 74 65 ...........write 0020 2c 36 2c 31 37 2c 2d 31 0a ,6,17,-1. Auto_strobe off 0000 1b 00 a0 1a fe 2a 85 a9 ff ff 00 00 00 00 09 00 .....*.......... 0010 00 01 00 07 00 02 03 0d 00 00 00 77 72 69 74 65 ...........write 0020 2c 36 2c 31 2c 2d 31 0a ,6,1,-1. Auto strobe off 0000 1b 00 a0 5a 2b 52 85 a9 ff ff 00 00 00 00 09 00 ...Z+R.......... 0010 00 01 00 07 00 02 03 0e 00 00 00 77 72 69 74 65 ...........write 0020 2c 36 2c 31 37 2c 2d 31 0a ,6,17,-1. LED_on time = 1280ms 0000 1b 00 a0 2a 1e 5a 85 a9 ff ff 00 00 00 00 09 00 ...*.Z.......... 0010 00 01 00 07 00 02 03 0f 00 00 00 77 72 69 74 65 ...........write 0020 2c 35 2c 32 35 35 2c 2d 31 0a ,5,255,-1. 0000 1b 00 a0 2a 29 74 85 a9 ff ff 00 00 00 00 09 00 ...*)t.......... 0010 00 01 00 08 00 02 03 0e 00 00 00 77 72 69 74 65 ...........write 0020 2c 35 2c 33 35 2c 2d 31 0a ,5,35,-1. 0000 1b 00 a0 8a 3a 74 85 a9 ff ff 00 00 00 00 09 00 ....:t.......... 0010 00 01 00 08 00 02 03 0f 00 00 00 77 72 69 74 65 ...........write 0020 2c 37 2c 31 39 32 2c 2d 31 0a ,7,192,-1. 0000 1b 00 a0 0a 3b 74 85 a9 ff ff 00 00 00 00 09 00 ....;t.......... 0010 00 01 00 08 00 02 03 0e 00 00 00 77 72 69 74 65 ...........write 0020 2c 36 2c 31 37 2c 2d 31 0a ,6,17,-1. 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 45 53 50 2d 52 .......@...ESP-R 0020 4f 4d 3a 65 73 70 33 32 73 32 2d 72 63 34 2d 32 OM:esp32s2-rc4-2 0030 30 31 39 31 30 32 35 0d 0a 42 75 69 6c 64 3a 4f 0191025..Build:O 0040 63 74 20 32 35 20 32 30 31 39 0d 0a 72 73 74 3a ct 25 2019..rst: 0050 30 78 31 20 28 50 4f 57 45 52 4f 0x1 (POWERO 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 4e 29 2c 62 6f .......@...N),bo 0020 6f 74 3a 30 78 38 20 28 53 50 49 5f 46 41 53 54 ot:0x8 (SPI_FAST 0030 5f 46 4c 41 53 48 5f 42 4f 4f 54 29 0d 0a 53 50 _FLASH_BOOT)..SP 0040 49 57 50 3a 30 78 65 65 0d 0a 6d 6f 64 65 3a 44 IWP:0xee..mode:D 0050 49 4f 2c 20 63 6c 6f 63 6b 20 64 IO, clock d 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 69 76 3a 31 0d .......@...iv:1. 0020 0a 6c 6f 61 64 3a 30 78 33 66 66 65 35 31 31 30 .load:0x3ffe5110 0030 2c 6c 65 6e 3a 30 78 31 32 32 38 0d 0a 6c 6f 61 ,len:0x1228..loa 0040 64 3a 30 78 34 30 30 34 61 30 30 30 2c 6c 65 6e d:0x4004a000,len 0050 3a 30 78 61 30 63 0d 0a 6c 6f 61 :0xa0c..loa 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 2b 00 00 00 64 3a 30 78 34 .......+...d:0x4 0020 30 30 34 65 30 30 30 2c 6c 65 6e 3a 30 78 33 35 004e000,len:0x35 0030 37 63 0d 0a 65 6e 74 72 79 20 30 78 34 30 30 34 7c..entry 0x4004 0040 61 31 35 63 0d 0a a15c.. 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 50 57 4d 20 61 .......@...PWM a 0020 6e 64 20 49 6e 64 69 63 61 74 6f 72 20 28 69 6e nd Indicator (in 0030 63 6c 5f 70 77 6d 29 3a 20 30 0d 0a 43 75 72 72 cl_pwm): 0..Curr 0040 65 6e 74 20 73 65 74 20 4c 45 44 31 20 28 6c 65 ent set LED1 (le 0050 64 20 63 75 72 72 65 6e 74 20 31 d current 1 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 29 3a 20 31 30 .......@...): 10 0020 30 31 31 31 30 30 0d 0a 43 75 72 72 65 6e 74 20 011100..Current 0030 73 65 74 20 4c 45 44 32 20 28 6c 65 64 20 63 75 set LED2 (led cu 0040 72 72 65 6e 74 20 32 29 3a 20 31 30 30 31 31 31 rrent 2): 100111 0050 30 30 0d 0a 46 6c 61 73 68 20 74 00..Flash t 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 69 6d 65 72 20 .......@...imer 0020 28 66 6c 61 73 68 20 74 69 6d 65 6f 75 74 29 3a (flash timeout): 0030 20 31 30 30 30 31 31 0d 0a 53 74 72 6f 62 65 20 100011..Strobe 0040 73 69 67 6e 61 6c 69 6e 67 20 28 73 74 72 6f 62 signaling (strob 0050 65 20 6f 6e 29 3a 20 31 31 30 30 e on): 1100 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 30 30 30 30 0d .......@...0000. 0020 0a 53 74 72 6f 62 65 20 73 69 67 6e 61 6c 69 6e .Strobe signalin 0030 67 20 28 73 74 72 6f 62 65 20 74 79 70 65 29 3a g (strobe type): 0040 20 31 31 30 30 30 30 30 30 0d 0a 43 6f 6e 74 72 11000000..Contr 0050 6f 6c 20 28 6d 6f 64 65 20 73 65 ol (mode se 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 74 74 69 6e 67 .......@...tting 0020 29 3a 20 31 30 30 30 30 0d 0a 43 6f 6e 74 72 6f ): 10000..Contro 0030 6c 20 28 6f 75 74 5f 6f 6e 29 3a 20 31 30 30 30 l (out_on): 1000 0040 30 0d 0a 43 6f 6e 74 72 6f 6c 20 28 61 75 74 6f 0..Control (auto 0050 73 74 72 6f 62 65 29 3a 20 31 30 strobe): 10 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 30 30 30 0d 0a .......@...000.. 0020 46 61 75 6c 74 20 28 66 61 75 6c 74 20 75 76 6c Fault (fault uvl 0030 6f 29 3a 20 30 0d 0a 46 61 75 6c 74 20 28 66 61 o): 0..Fault (fa 0040 75 6c 74 29 3a 20 30 0d 0a 46 61 75 6c 74 20 28 ult): 0..Fault ( 0050 66 61 75 6c 74 20 6f 76 65 72 74 fault overt 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 40 00 00 00 65 6d 70 74 29 .......@...empt) 0020 3a 20 30 0d 0a 46 61 75 6c 74 20 28 6c 65 64 20 : 0..Fault (led 0030 73 68 6f 72 74 29 3a 20 30 0d 0a 46 61 75 6c 74 short): 0..Fault 0040 20 28 66 61 75 6c 74 20 6f 76 70 29 3a 20 30 0d (fault ovp): 0. 0050 0a 46 69 78 65 64 20 49 44 20 28 .Fixed ID ( 0000 1b 00 70 6a 0e 4f 85 a9 ff ff 00 00 00 00 09 00 ..pj.O.......... 0010 01 01 00 09 00 82 03 15 00 00 00 66 69 78 65 64 ...........fixed 0020 20 69 64 29 3a 20 31 30 31 31 30 31 30 30 0d 0a id): 10110100..
To help figure out the correct software flow, I started writing a Matlab app to interface with the ESP32 directly through the USB serial port and parse the output similar to the AS1170-GUI program.
The basic configuration protocol is as follows:
Connect to the ESP32 through a USB serial port interface.
The ESP32 side Arduino GUI code and the AS1170 GUI PC executable are available online
https://github.com/ams-OSRAM/AS1170-GUI
#include <Wire.h>
#include <SD.h> // Include the SD library
#include <HardwareSerial.h>
#define _slaveaddress 0x30 // 7-bit I2C address
#define SDA_PIN 12
#define SCL_PIN 13
#define CLOCK_SPEED 400000 // 400 kHz
#define CONTROL 0x6
#define PWM_INDICATOR_REGISTER 0x9
#define CURRENT_SET_LED1_REGISTER 0x1
#define CURRENT_SET_LED2_REGISTER 0x2
#define FLASH_TIMER_REGISTER 0x5
#define STROBE_SIGNALING_REGISTER 0x7
// Define a structure to hold register information
struct Register {
String name;
int address;
int defaultValue;
String fields[8];
};
Register registers[10]; // Array to hold register objects
int numRegisters = 0; // Number of registers loaded
// Define a function to read a register
int readRegister(Register reg, int bit = -1) {
Wire.beginTransmission(_slaveaddress); // START, SLAVEADDR
Wire.write(reg.address); // Register address
Wire.endTransmission(false); // Repeated START
Wire.requestFrom(_slaveaddress, 1);
byte content = Wire.read();
// If a specific bit is not specified, read the whole register
if (bit == -1) {
return content;
} else {
// If a specific bit is specified, read only that bit
return bitRead(content, bit);
}
}
int writeRegister(Register* reg, int value) {
Wire.beginTransmission(_slaveaddress); // START, SLAVEADDR
Wire.write(reg->address); // Register address
byte newContent = value; // Use bitwise OR to keep old bits and change only the specified bits
Wire.write(newContent);
Wire.endTransmission(); // STOP
return newContent;
}
// Define a function to load registers from a CSV file
int loadRegisters(String filename, Register regs[]) {
// Open the file
File file = SD.open(filename);
// Read the file line by line and create Register objects
// Add the Register objects to an array
// Close the file
file.close();
// Return the number of Register objects loaded
return numRegisters;
}
void printRegisterValue(String name, int address, int startBit, int endBit, String label) {
static byte prevValue = 0; // Store the previous value
static unsigned long lastCheck = 0; // Store the last time the register was checked
Register reg;
reg.name = name;
reg.address = address;
byte value = readRegister(reg); // Read the whole byte
Serial.print(name);
Serial.print(" (");
Serial.print(label);
Serial.print("): ");
Serial.println(value, BIN); // Print the whole byte in binary
// Get the current time
unsigned long now = millis();
// Only check the value of the register once a second has passed
if (now - lastCheck >= 1000) {
// If the register is a "Fault" register and the value has changed, print the new value and update prevValue
if (name.startsWith("Fault") && value != prevValue) {
Serial.print(name);
Serial.print(" (");
Serial.print(label);
Serial.print("): ");
Serial.println(value, BIN); // Print the whole byte in binary
prevValue = value; // Update the stored value
}
}
}
void pollserial(void) {
// Check incoming serial chars
while (1) {
int ch = Serial.read();
if (ch == -1) break;
}
}
void setup() {
Wire.begin(SDA_PIN, SCL_PIN, CLOCK_SPEED); // Initialize I2C bus with SDA on pin 6, SCL on pin 11 and preferred frequency
Serial.begin(115200);
Register reg;
// Load registers from the CSV file
numRegisters = loadRegisters("field_map.csv", registers);
// Read the register at address 0
printRegisterValue("PWM and Indicator", 0x9, 0, 1, "incl_pwm");
printRegisterValue("Current set LED1", 0x1, 0, 7, "led current 1");
printRegisterValue("Current set LED2", 0x2, 0, 7, "led current 2");
printRegisterValue("Flash timer", 0x5, 0, 7, "flash timeout");
printRegisterValue("Strobe signaling", 0x7, 7, 7, "strobe on");
printRegisterValue("Strobe signaling", 0x7, 6, 6, "strobe type");
printRegisterValue("Control", 0x6, 0, 1, "mode setting");
printRegisterValue("Control", 0x6, 3, 3, "out_on");
printRegisterValue("Control", 0x6, 4, 4, "autostrobe");
printRegisterValue("Fault", 0x8, 0, 0, "fault uvlo");
printRegisterValue("Fault", 0x8, 4, 4, "fault");
printRegisterValue("Fault", 0x8, 5, 5, "fault overtempt");
printRegisterValue("Fault", 0x8, 6, 6, "led short");
printRegisterValue("Fault", 0x8, 7, 7, "fault ovp");
printRegisterValue("Fixed ID", 0x0, 3, 7, "fixed id");
pollserial();
}
void loop() {
Register reg;
// Check if data is available to read
if (Serial.available()) {
// Read the entire line
String line = Serial.readStringUntil('\n');
// Split the line into parts
int commaIndex1 = line.indexOf(',');
int commaIndex2 = line.indexOf(',', commaIndex1 + 1);
int commaIndex3 = line.indexOf(',', commaIndex2 + 1);
// Parse the command, register address, value, and bit
String command = line.substring(0, commaIndex1);
int address = line.substring(commaIndex1 + 1, commaIndex2).toInt();
int value = line.substring(commaIndex2 + 1, commaIndex3).toInt();
command.trim(); // Remove any trailing whitespace
// Check if the command is the reset command
if (command == "reset") {
ESP.restart(); // Perform a software reset
pollserial();
}
else if (command == "read") {
printRegisterValue("PWM and Indicator", 0x9, 0, 1, "incl_pwm");
printRegisterValue("Current set LED1", 0x1, 0, 7, "led current 1");
printRegisterValue("Current set LED2", 0x2, 0, 7, "led current 2");
printRegisterValue("Flash timer", 0x5, 0, 7, "flash timeout");
printRegisterValue("Strobe signaling", 0x7, 7, 7, "strobe on");
printRegisterValue("Control", 0x6, 0, 1, "mode setting");
printRegisterValue("Fault", 0x8, 0, 0, "fault uvlo");
printRegisterValue("Fault", 0x8, 4, 4, "fault");
printRegisterValue("Fault", 0x8, 5, 5, "fault overtempt");
printRegisterValue("Fault", 0x8, 6, 6, "led short");
printRegisterValue("Fault", 0x8, 7, 7, "fault ovp");
printRegisterValue("Fixed ID", 0x0, 3, 7, "fixed id");
}
// Check if the command is "write"
else if (command == "write") {
Register reg;
reg.address = address;
writeRegister(®, value);
delay(0.1);
pollserial();
}
}
pollserial();
}
Program what mode you want the IC to be in:
If Indicator Mode:
If Assist mode:
If Flash or Strobe Mode:
There is also a current boost register 0x81 used with a password register 0x80 for an extra %11 current output drive
(I haven't tried this yet - an external power supply must be used for this because normal USB ports can't source high currents)
There are several fault protection circuits inside the AS1170 and the fault codes can be read from register 0x08
Here's my Matlab code so far:
classdef OSRAM_Serial_rsc16apr2026 < matlab.apps.AppBase
% Properties that correspond to app components
properties (Access = public)
UIFigure matlab.ui.Figure
SystemStatusPanel matlab.ui.container.Panel
Label matlab.ui.control.Label
ovpCheckBox matlab.ui.control.CheckBox
led_shortCheckBox matlab.ui.control.CheckBox
overtempCheckBox matlab.ui.control.CheckBox
timeoutCheckBox matlab.ui.control.CheckBox
tx_maskCheckBox matlab.ui.control.CheckBox
uvloCheckBox matlab.ui.control.CheckBox
DriverEnablePanel matlab.ui.container.Panel
StrobeSwitch matlab.ui.control.ToggleSwitch
StrobeSwitchLabel matlab.ui.control.Label
OutputSwitch matlab.ui.control.ToggleSwitch
OutputSwitchLabel matlab.ui.control.Label
Panel matlab.ui.container.Panel
ListBox matlab.ui.control.ListBox
ListBoxLabel matlab.ui.control.Label
OSRAMRegistersListBox matlab.ui.control.ListBox
OSRAMRegistersListBoxLabel matlab.ui.control.Label
ReadRegistersButton matlab.ui.control.Button
ConfigurationPanel matlab.ui.container.Panel
NotConnectedCheckBox matlab.ui.control.CheckBox
RefreshButton matlab.ui.control.Button
DisconnectButton matlab.ui.control.Button
ConnectButton matlab.ui.control.Button
BaudrateDropDown matlab.ui.control.DropDown
BaudRateLabel matlab.ui.control.Label
SerialportDropDown matlab.ui.control.DropDown
SerialportDropDownLabel matlab.ui.control.Label
LEDDriversOutputCurrentPanel matlab.ui.container.Panel
LED2CurrentSlider matlab.ui.control.Slider
LED2Label matlab.ui.control.Label
LED1CurrentSlider matlab.ui.control.Slider
LED1CurrentSliderLabel matlab.ui.control.Label
LED1CurrentEditField matlab.ui.control.NumericEditField
LED1CurrentEditFieldLabel matlab.ui.control.Label
LED2CurrentEditField matlab.ui.control.NumericEditField
LED2CurrentEditFieldLabel matlab.ui.control.Label
end
properties (Access = private)
SerialPort % Serial port
myByte = uint8(255);
numBytes = uint8(255);
end
methods (Access = private)
function func(app)
count = numel(app.OSRAMRegistersListBox.Items);
for countindex = 1:count
mystring = app.OSRAMRegistersListBox.Items{countindex};
app.ListBox.Items{end+1} = mystring;
index = strfind(mystring, ':');
app.ListBox.Items{end+1} = sprintf('%d',index);
nameStr = extractBefore(mystring,':');
app.ListBox.Items{end+1} = nameStr;
if matches(nameStr,'Fault (fault uvlo)')
dataStr = extractAfter(mystring,':');
app.ListBox.Items{end+1} = sprintf('UVLO Fault data = %s',dataStr);
%bindataStr = extractBefore(dataStr,'\n');
app.Label.Text = dataStr;
if (str2double(dataStr) == 1)
app.uvloCheckBox.Value = true;
else
app.uvloCheckBox.Value = false;
end
end
end
end
end
% Callbacks that handle component events
methods (Access = private)
% Code that executes after component creation
function startupFcn(app)
app.SerialportDropDown.Items = cellstr(["" serialportlist]);
end
% Button pushed function: RefreshButton
function RefreshButtonPushed2(app, event)
app.SerialportDropDown.Items = cellstr(["" serialportlist]);
end
% Button pushed function: ConnectButton
function ConnectButtonPushed(app, event)
% Validate selected serial port device
try
app.SerialPort = serialport(app.SerialportDropDown.Value,str2double(app.BaudrateDropDown.Value));
catch ME
uialert(app.UIFigure,ME.message,"Serialport Connection Error",Interpreter="html")
return
end
if isvalid(app.SerialPort)
flush(app.SerialPort);
app.NotConnectedCheckBox.Value = true;
app.NotConnectedCheckBox.FontColor = [0.23,0.67,0.20];
app.NotConnectedCheckBox.Text = "Connected";
app.LED1CurrentSlider.Enable = true;
app.LED2CurrentSlider.Enable = true;
app.OSRAMRegistersListBox.Value = {};
app.ReadRegistersButton.Enable = true;
app.OutputSwitch.Enable = true;
app.ReadRegistersButtonPushed();
app.LED1CurrentSliderValueChanged();
app.LED2CurrentSliderValueChanged();
end
end
% Button pushed function: ReadRegistersButton
function ReadRegistersButtonPushed(app, event)
%flush(app.SerialPort);
app.OSRAMRegistersListBox.Items = cellstr("");
writeline(app.SerialPort,"read");
SerialnumBytes = app.SerialPort.NumBytesAvailable;
while (SerialnumBytes ~= 0)
readbytes = readline(app.SerialPort);
app.OSRAMRegistersListBox.Items(end+1) = cellstr(readbytes);
SerialnumBytes = app.SerialPort.NumBytesAvailable;
end
app.func();
end
% Button pushed function: DisconnectButton
function DisconnectButtonPushed(app, event)
delete(app.SerialPort);
app.NotConnectedCheckBox.Value = false;
app.NotConnectedCheckBox.FontColor = 'red';
app.NotConnectedCheckBox.Text = "Not Connected";
end
% Value changed function: OutputSwitch
function OutputSwitchValueChanged(app, event)
value = app.OutputSwitch.Value;
if (value == "On")
writeline(app.SerialPort,"write,6,25,-1");
else
writeline(app.SerialPort,"write,6,17,-1");
end
app.ReadRegistersButtonPushed();
end
% Value changed function: LED1CurrentSlider
function LED1CurrentSliderValueChanged(app, event)
app.LED1CurrentEditField.Value = app.LED1CurrentSlider.Value;
Slider1Value = round(app.LED1CurrentSlider.Value);
app.LED1CurrentEditField.Value = Slider1Value;
outline1 = sprintf('write,1,%d',Slider1Value);
writeline(app.SerialPort,outline1);
end
% Value changed function: LED2CurrentSlider
function LED2CurrentSliderValueChanged(app, event)
Slider2Value = round(app.LED2CurrentSlider.Value);
app.LED2CurrentEditField.Value = Slider2Value;
outline2 = sprintf('write,2,%d',Slider2Value);
writeline(app.SerialPort,outline2);
end
end
% Component initialization
methods (Access = private)
% Create UIFigure and components
function createComponents(app)
% Get the file path for locating images
pathToMLAPP = fileparts(mfilename('fullpath'));
% Create UIFigure and hide until all components are created
app.UIFigure = uifigure('Visible', 'off');
app.UIFigure.Color = [0.149 0.549 0.8667];
app.UIFigure.Position = [100 100 948 806];
app.UIFigure.Name = 'OSRAM LED Driver Interface';
app.UIFigure.Icon = fullfile(pathToMLAPP, 'bugsmall.jpg');
app.UIFigure.Theme = 'light';
% Create LEDDriversOutputCurrentPanel
app.LEDDriversOutputCurrentPanel = uipanel(app.UIFigure);
app.LEDDriversOutputCurrentPanel.Title = 'LED Drivers Output Current';
app.LEDDriversOutputCurrentPanel.Position = [442 665 492 126];
% Create LED2CurrentEditFieldLabel
app.LED2CurrentEditFieldLabel = uilabel(app.LEDDriversOutputCurrentPanel);
app.LED2CurrentEditFieldLabel.HorizontalAlignment = 'right';
app.LED2CurrentEditFieldLabel.Position = [258 69 78 22];
app.LED2CurrentEditFieldLabel.Text = 'LED2 Current';
% Create LED2CurrentEditField
app.LED2CurrentEditField = uieditfield(app.LEDDriversOutputCurrentPanel, 'numeric');
app.LED2CurrentEditField.Editable = 'off';
app.LED2CurrentEditField.Position = [351 69 100 22];
% Create LED1CurrentEditFieldLabel
app.LED1CurrentEditFieldLabel = uilabel(app.LEDDriversOutputCurrentPanel);
app.LED1CurrentEditFieldLabel.HorizontalAlignment = 'right';
app.LED1CurrentEditFieldLabel.Position = [14 68 78 22];
app.LED1CurrentEditFieldLabel.Text = 'LED1 Current';
% Create LED1CurrentEditField
app.LED1CurrentEditField = uieditfield(app.LEDDriversOutputCurrentPanel, 'numeric');
app.LED1CurrentEditField.Editable = 'off';
app.LED1CurrentEditField.Position = [107 68 100 22];
% Create LED1CurrentSliderLabel
app.LED1CurrentSliderLabel = uilabel(app.LEDDriversOutputCurrentPanel);
app.LED1CurrentSliderLabel.HorizontalAlignment = 'right';
app.LED1CurrentSliderLabel.Position = [15 33 35 22];
app.LED1CurrentSliderLabel.Text = 'LED1';
% Create LED1CurrentSlider
app.LED1CurrentSlider = uislider(app.LEDDriversOutputCurrentPanel);
app.LED1CurrentSlider.Limits = [0 63];
app.LED1CurrentSlider.ValueChangedFcn = createCallbackFcn(app, @LED1CurrentSliderValueChanged, true);
app.LED1CurrentSlider.Enable = 'off';
app.LED1CurrentSlider.Position = [72 42 150 3];
% Create LED2Label
app.LED2Label = uilabel(app.LEDDriversOutputCurrentPanel);
app.LED2Label.HorizontalAlignment = 'right';
app.LED2Label.Position = [259 33 35 22];
app.LED2Label.Text = 'LED2';
% Create LED2CurrentSlider
app.LED2CurrentSlider = uislider(app.LEDDriversOutputCurrentPanel);
app.LED2CurrentSlider.Limits = [0 63];
app.LED2CurrentSlider.ValueChangedFcn = createCallbackFcn(app, @LED2CurrentSliderValueChanged, true);
app.LED2CurrentSlider.Enable = 'off';
app.LED2CurrentSlider.Position = [316 42 150 3];
% Create ConfigurationPanel
app.ConfigurationPanel = uipanel(app.UIFigure);
app.ConfigurationPanel.BorderWidth = 3;
app.ConfigurationPanel.TitlePosition = 'centertop';
app.ConfigurationPanel.Title = 'Configuration';
app.ConfigurationPanel.BackgroundColor = [1 0.9098 0.3922];
app.ConfigurationPanel.Position = [34 665 399 126];
% Create SerialportDropDownLabel
app.SerialportDropDownLabel = uilabel(app.ConfigurationPanel);
app.SerialportDropDownLabel.HorizontalAlignment = 'right';
app.SerialportDropDownLabel.Position = [1 70 61 22];
app.SerialportDropDownLabel.Text = 'Serial Port';
% Create SerialportDropDown
app.SerialportDropDown = uidropdown(app.ConfigurationPanel);
app.SerialportDropDown.Items = {};
app.SerialportDropDown.Placeholder = 'Select..';
app.SerialportDropDown.Position = [76 70 133 22];
app.SerialportDropDown.Value = {};
% Create BaudRateLabel
app.BaudRateLabel = uilabel(app.ConfigurationPanel);
app.BaudRateLabel.HorizontalAlignment = 'right';
app.BaudRateLabel.Position = [1 34 62 22];
app.BaudRateLabel.Text = 'Baud Rate';
% Create BaudrateDropDown
app.BaudrateDropDown = uidropdown(app.ConfigurationPanel);
app.BaudrateDropDown.Items = {'115200'};
app.BaudrateDropDown.Position = [77 34 76 22];
app.BaudrateDropDown.Value = '115200';
% Create ConnectButton
app.ConnectButton = uibutton(app.ConfigurationPanel, 'push');
app.ConnectButton.ButtonPushedFcn = createCallbackFcn(app, @ConnectButtonPushed, true);
app.ConnectButton.Position = [75 5 100 23];
app.ConnectButton.Text = 'Connect';
% Create DisconnectButton
app.DisconnectButton = uibutton(app.ConfigurationPanel, 'push');
app.DisconnectButton.ButtonPushedFcn = createCallbackFcn(app, @DisconnectButtonPushed, true);
app.DisconnectButton.BackgroundColor = [1 1 1];
app.DisconnectButton.Position = [228 5 100 23];
app.DisconnectButton.Text = 'Disconnect';
% Create RefreshButton
app.RefreshButton = uibutton(app.ConfigurationPanel, 'push');
app.RefreshButton.ButtonPushedFcn = createCallbackFcn(app, @RefreshButtonPushed2, true);
app.RefreshButton.Icon = fullfile(pathToMLAPP, 'refresh.png');
app.RefreshButton.IconAlignment = 'center';
app.RefreshButton.Position = [227 69 34 23];
app.RefreshButton.Text = '';
% Create NotConnectedCheckBox
app.NotConnectedCheckBox = uicheckbox(app.ConfigurationPanel);
app.NotConnectedCheckBox.Text = 'Not Connected';
app.NotConnectedCheckBox.FontColor = [1 0 0];
app.NotConnectedCheckBox.Position = [228 34 102 22];
% Create Panel
app.Panel = uipanel(app.UIFigure);
app.Panel.Title = 'Panel';
app.Panel.BackgroundColor = [0.851 0.851 0.851];
app.Panel.Position = [35 110 677 537];
% Create ReadRegistersButton
app.ReadRegistersButton = uibutton(app.Panel, 'push');
app.ReadRegistersButton.ButtonPushedFcn = createCallbackFcn(app, @ReadRegistersButtonPushed, true);
app.ReadRegistersButton.BackgroundColor = [1 0.9098 0.3922];
app.ReadRegistersButton.Enable = 'off';
app.ReadRegistersButton.Position = [274 473 100 23];
app.ReadRegistersButton.Text = 'Read Registers';
% Create OSRAMRegistersListBoxLabel
app.OSRAMRegistersListBoxLabel = uilabel(app.Panel);
app.OSRAMRegistersListBoxLabel.BackgroundColor = [0.902 0.902 0.902];
app.OSRAMRegistersListBoxLabel.HorizontalAlignment = 'right';
app.OSRAMRegistersListBoxLabel.Position = [108 465 103 22];
app.OSRAMRegistersListBoxLabel.Text = 'OSRAM Registers';
% Create OSRAMRegistersListBox
app.OSRAMRegistersListBox = uilistbox(app.Panel);
app.OSRAMRegistersListBox.Items = {};
app.OSRAMRegistersListBox.BackgroundColor = [0.902 0.902 0.902];
app.OSRAMRegistersListBox.Position = [53 18 258 448];
app.OSRAMRegistersListBox.Value = {};
% Create ListBoxLabel
app.ListBoxLabel = uilabel(app.Panel);
app.ListBoxLabel.HorizontalAlignment = 'right';
app.ListBoxLabel.Position = [495 465 48 22];
app.ListBoxLabel.Text = 'List Box';
% Create ListBox
app.ListBox = uilistbox(app.Panel);
app.ListBox.Items = {};
app.ListBox.Position = [392 18 260 438];
app.ListBox.Value = {};
% Create DriverEnablePanel
app.DriverEnablePanel = uipanel(app.UIFigure);
app.DriverEnablePanel.Title = 'Driver Enable';
app.DriverEnablePanel.BackgroundColor = [1 0.9098 0.3922];
app.DriverEnablePanel.Position = [736 444 192 203];
% Create OutputSwitchLabel
app.OutputSwitchLabel = uilabel(app.DriverEnablePanel);
app.OutputSwitchLabel.HorizontalAlignment = 'center';
app.OutputSwitchLabel.FontWeight = 'bold';
app.OutputSwitchLabel.FontColor = [0 0 0];
app.OutputSwitchLabel.Position = [33 29 44 22];
app.OutputSwitchLabel.Text = 'Output';
% Create OutputSwitch
app.OutputSwitch = uiswitch(app.DriverEnablePanel, 'toggle');
app.OutputSwitch.ValueChangedFcn = createCallbackFcn(app, @OutputSwitchValueChanged, true);
app.OutputSwitch.Enable = 'off';
app.OutputSwitch.FontWeight = 'bold';
app.OutputSwitch.FontColor = [0 0 0];
app.OutputSwitch.Position = [44 87 20 45];
% Create StrobeSwitchLabel
app.StrobeSwitchLabel = uilabel(app.DriverEnablePanel);
app.StrobeSwitchLabel.HorizontalAlignment = 'center';
app.StrobeSwitchLabel.FontWeight = 'bold';
app.StrobeSwitchLabel.Position = [119 29 43 22];
app.StrobeSwitchLabel.Text = 'Strobe';
% Create StrobeSwitch
app.StrobeSwitch = uiswitch(app.DriverEnablePanel, 'toggle');
app.StrobeSwitch.Enable = 'off';
app.StrobeSwitch.FontWeight = 'bold';
app.StrobeSwitch.Position = [130 87 20 45];
% Create SystemStatusPanel
app.SystemStatusPanel = uipanel(app.UIFigure);
app.SystemStatusPanel.Title = 'System Status';
app.SystemStatusPanel.Position = [737 184 195 228];
% Create uvloCheckBox
app.uvloCheckBox = uicheckbox(app.SystemStatusPanel);
app.uvloCheckBox.Text = 'uvlo';
app.uvloCheckBox.Position = [3 183 44 22];
% Create tx_maskCheckBox
app.tx_maskCheckBox = uicheckbox(app.SystemStatusPanel);
app.tx_maskCheckBox.Text = 'tx_mask';
app.tx_maskCheckBox.Position = [4 162 67 22];
% Create timeoutCheckBox
app.timeoutCheckBox = uicheckbox(app.SystemStatusPanel);
app.timeoutCheckBox.Text = 'timeout';
app.timeoutCheckBox.Position = [5 141 61 22];
% Create overtempCheckBox
app.overtempCheckBox = uicheckbox(app.SystemStatusPanel);
app.overtempCheckBox.Text = 'overtemp';
app.overtempCheckBox.Position = [118 183 72 22];
% Create led_shortCheckBox
app.led_shortCheckBox = uicheckbox(app.SystemStatusPanel);
app.led_shortCheckBox.Text = 'led_short';
app.led_shortCheckBox.Position = [118 162 71 22];
% Create ovpCheckBox
app.ovpCheckBox = uicheckbox(app.SystemStatusPanel);
app.ovpCheckBox.Text = 'ovp';
app.ovpCheckBox.Position = [119 141 41 22];
% Create Label
app.Label = uilabel(app.SystemStatusPanel);
app.Label.Position = [57 183 25 22];
app.Label.Text = '?';
% Show the figure after all components are created
app.UIFigure.Visible = 'on';
end
end
% App creation and deletion
methods (Access = public)
% Construct app
function app = OSRAM_Serial_rsc16apr2026
% Create UIFigure and components
createComponents(app)
% Register the app with App Designer
registerApp(app, app.UIFigure)
% Execute the startup function
runStartupFcn(app, @startupFcn)
if nargout == 0
clear app
end
end
% Code that executes before app deletion
function delete(app)
% Delete UIFigure when app is deleted
delete(app.UIFigure)
end
end
end
Now that I understand better how the AS1170 registers are configured, my next project is to use the OSRAM board and the ESP32 to trigger a PIV camera and control a scanning laser module in the lab.
I'll write up another blog for that project.
If the other OSRAM IR LEDS arrive, I will evaluate them with the EVK.
