ST STEVAL-ILL059V1 Manual de usuario
Introduction
The STEVAL-ILL059V1 is a high brightness LED array driver evaluation board with diagnostics based on the STAP16DPS05
low voltage 16-bit constant current LED sink driver for automotive applications.
The LED driver is configured and controlled through an 8-bit automotive grade STM8A microcontroller via SPI interface. The
A5974D automotive grade DC-DC converter provides the necessary voltage and power for all the board functions.
The package includes a GUI that helps you evaluate the features of the LED driver and download your own application firmware
onto the board through the SWIM interface.
Figure 1. STEVAL-ILL059V1 LED array driver evaluation board
High brightness LED array driver with diagnostics for automotive applications
based on STAP16DPS05 and STM8A
UM2554
User manual
UM2554 - Rev 1 - February 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
1Overview
The package consists of the following elements:
•A STEVAL-ILL059V1 evaluation board
• An RS232-USB bridge daughterboard
• Dedicated GUI software
• User documentation
Figure 2. Block diagram of STEVAL-ILL059V1 evaluation board
The STEVAL-ILL059V1 evaluation board includes a DC input power supply, an 8-bit microcontroller and a SWIM
connector to program the microcontroller, 32 white LEDs and user interface buttons and potentiometers to control
the two STAP16DPS05 LED drivers (each driver controls 8 LEDs
The evaluation board can operate in the following modes:
1. Standalone Mode: the board is controlled via on-board push buttons and potentiometers
2. GUI Mode: is activated when the board is connected to a PC, and lets you control the board through the GUI
The package includes an RS232-USB daughterboard that supports full-duplex communication between USB and
UART interfaces, thus allowing communication with the PC GUI via USB. The daughterboard connected is
powered by the main board through the UART and SWD connector.
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Overview
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Figure 3. STEVAL-ILL059V1 evaluation board (top)
1. 6–24 V DC power supply with reverse voltage protection and short-circuit protection, standard DC jack input
2. A5974D automotive grade switching regulator for automotive applications
3. LF33: 3.3 Volt linear voltage regulator for automotive applications
4. STM8AF6266 8-bit microcontroller for automotive applications
5. Backwards and forwards button switches
6. Reset switch
7. SWIM connector to program and debug microcontroller firmware
8. Connector for LIN development and evaluation
9. Brightness control potentiometer
10. Speed control potentiometer
11. STAP16DPS05 constant current LED driver
12. 32 white LEDs (PLCC 4)
13. 8 jumpers, to simulate open-circuit error
14. 3 jumpers, to simulate short-circuit error
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4
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8910
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Figure 4. STEVAL-ILL059V1 evaluation board (bottom)
15. Slot for USB to UART daughterboard
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Figure 5. RS232-USB bridge daughterboard (top)
1. Mini-B type female USB connector
2. SWD connector (for programming daughter board)
3. Connector for UART communication between main board and daughter board
4. ESDAULC6-3BP6 ESD protection for high speed interfaces
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Figure 6. RS232-USB bridge daughterboard (bottom)
5. STM32F103C8T7 32-bit microcontroller
6. 16 MHz crystal
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1.1 Operating modes
1.1.1 Standalone Mode
In standalone Mode, the STEVAL-ILL059V1 evaluation board is not connected to a PC via the RS232-USB
interface board. In this mode, you can perform the following actions:
•run default LED demo patterns
• use two on-board buttons to scroll back and forth between the demo patterns
• use two on-board potentiometers to gradually change the brightness (average maximum LED current) and
speed of the patterns
• simulate error conditions and detection using open-circuit and short-circuit jumpers
• use the reset button to reset the microcontroller and return to the first demo pattern
Note: The board immediately starts with brief animation on the LED matrix when DC power is supplied. You can
control the board after the animation.
1.1.2 GUI Mode
To control the board using the GUI, use the USB to UART bridge as an interface between the evaluation board
and your PC. The bridge supports bi-directional communication.
The GUI allows the following control, programming and monitoring activities:
•Basic actions:
– all the actions in standalone, but controlled from the GUI
– switch individual LEDs on and off, and adjust their brightness
– switch all LEDs on and off at once
– adjust the brightness of all the LEDs at once
• Use the four preset programs to quickly view how frame programming works on the evaluation board
• Build your own programs to display any pattern of up to 20 frames, with the following settings:
– transition time between the frames
– frame count of the number of frames in your program
– brightness slider to configure the brightness of each frame
• Monitor error detection on the GUI at the following rates:
– once only
– every 0.5 seconds
– every 1 second
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2Sample firmware demos
2.1 LED demo patterns
Alphanumeric text in flashing mode demo
In the alphanumeric text in flashing mode demo, the letters “ST” flash in the LED matrix; the flashing rate is
adjustable, but the brightness potentiometer remains inactive in this mode.
Figure 7. Flashing text demo
Curtain pattern
Figure 8. All LEDs on during curtain pattern
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Random pattern
Figure 9. Random pattern 1
Figure 10. Random pattern 2
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LED demo patterns
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Figure 11. Random pattern 3
Figure 12. Random pattern 4
2.2 Error detection demonstration
In the error detection demo, the drivers perform open-error detection and short-error detection simultaneously. If a
defective LED is found, it is signaled by lighting the corresponding LED in the row below for an open circuit fault
and on the left for a short-circuit fault.
On the board, open and short-circuit errors are simulated using open and short jumpers, respectively. The
following table shows how each jumper provokes a specific fault, and how the fault is signaled on the LED array.
Table 1. Error detection jumper table
Jumper Required action Fault type Error in LED Shown on LED
J7 Place jumper Short D30 D26
J8 Place jumper Short D31 D27
J9 Place jumper Short D32 D28
J10 Remove jumper Open D1 D2
J11 Remove jumper Open D5 D6
J12 Remove jumper Open D9 D10
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Error detection demonstration
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Jumper Required action Fault type Error in LED Shown on LED
J13 Remove jumper Open D13 D14
J14 Remove jumper Open D17 D18
J15 Remove jumper Open D21 D22
J16 Remove jumper Open D25 D26
J17 Remove jumper Open D29 D30
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Error detection demonstration
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