Difference between revisions of "Newhaven LVDS Capacitive Display Set"
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| − | [[Category:iMX8M | + | [[Category:iMX8M Industrial Development Kit]] |
| − | [[Category:iMX8M | + | [[Category:iMX8M Industrial Peripherals]] |
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<div style="float:right">__TOC__</div> | <div style="float:right">__TOC__</div> | ||
| − | This section shows information about the Newhaven LVDS Capacitive Display Set. The iMX8M Industrial Development Kit in this configuration is equipped with Yocto dunfell, kernel 5.4 to support LVDS display with a touchscreen layer. In this case the display is installed on the top of the | + | This section shows information about the Newhaven LVDS Capacitive Display Set. The iMX8M Industrial Development Kit in this configuration is equipped with Yocto dunfell, kernel 5.4 to support LVDS display with a touchscreen layer. In this case the display is installed on the top of the iMX Development Baseboard.<br /> |
[[image:Voipac NHD LCD Assembly.png|800px]] | [[image:Voipac NHD LCD Assembly.png|800px]] | ||
| Line 18: | Line 18: | ||
== Hardware connection == | == Hardware connection == | ||
To enable smooth communication between the board and the display, connect the 40 Position FFC cable for LCD and 6 pin touchscreen FFC cable. To implement the display capabilities, following connections need to be made: | To enable smooth communication between the board and the display, connect the 40 Position FFC cable for LCD and 6 pin touchscreen FFC cable. To implement the display capabilities, following connections need to be made: | ||
| − | * connection between LVDS Display and | + | * connection between LVDS Display and iMX Development Baseboard connector LVDS0 NHD (J12) using a 40 Position FFC cable |
| − | * touchscreen connection between | + | * touchscreen connection between iMX Development Baseboard connector NHD Touch (J13) and Touchscreen 6 pin FFC cable |
=== LVDS and Touchscreen cable === | === LVDS and Touchscreen cable === | ||
[[image:imx8m_LVDS_with_touchscreen_cable_for_NHD.jpg|800px]] | [[image:imx8m_LVDS_with_touchscreen_cable_for_NHD.jpg|800px]] | ||
| Line 59: | Line 59: | ||
=== Touchscreen test === | === Touchscreen test === | ||
| − | Default Voipac iMX8M Image contain evtest utility to catch touchscreen events. Make sure SiS9509 controller is detected and bound as input device: | + | Default Voipac iMX8M Image contain evtest utility to catch touchscreen events. Make sure SiS9509 controller is detected and bound as input device. Select the device event number 1 (generic ft5x06 (79)): |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
| − | root@imx8mq-voipac:~# | + | root@imx8mq-voipac:~# evtest |
| − | input: --- | + | No device specified, trying to scan all of /dev/input/event* |
| − | + | Available devices: | |
| + | /dev/input/event0: 30370000.snvs:snvs-powerkey | ||
| + | /dev/input/event1: generic ft5x06 (79) | ||
| + | /dev/input/event2: gpio-buttons | ||
| + | /dev/input/event3: bd718xx-pwrkey | ||
| + | /dev/input/event4: Logitech USB Receiver | ||
| + | /dev/input/event5: Logitech USB Receiver Mouse | ||
| + | /dev/input/event6: Logitech USB Receiver Consumer Control | ||
| + | /dev/input/event7: Logitech USB Receiver System Control | ||
| + | Select the device event number [0-7]: 1 | ||
| + | Input driver version is 1.0.1 | ||
| + | Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0 | ||
| + | Input device name: "generic ft5x06 (79)" | ||
| + | Supported events: | ||
| + | Event type 0 (EV_SYN) | ||
| + | Event type 1 (EV_KEY) | ||
| + | Event code 330 (BTN_TOUCH) | ||
| + | Event type 3 (EV_ABS) | ||
| + | Event code 0 (ABS_X) | ||
| + | Value 308 | ||
| + | Min 0 | ||
| + | Max 1023 | ||
| + | Event code 1 (ABS_Y) | ||
| + | Value 211 | ||
| + | Min 0 | ||
| + | Max 799 | ||
| + | Event code 47 (ABS_MT_SLOT) | ||
| + | Value 0 | ||
| + | Min 0 | ||
| + | Max 4 | ||
| + | Event code 53 (ABS_MT_POSITION_X) | ||
| + | Value 0 | ||
| + | Min 0 | ||
| + | Max 1023 | ||
| + | Event code 54 (ABS_MT_POSITION_Y) | ||
| + | Value 0 | ||
| + | Min 0 | ||
| + | Max 799 | ||
| + | Event code 57 (ABS_MT_TRACKING_ID) | ||
| + | Value 0 | ||
| + | Min 0 | ||
| + | Max 65535 | ||
| + | Properties: | ||
| + | Property type 1 (INPUT_PROP_DIRECT) | ||
| + | |||
| + | |||
</syntaxhighlight> | </syntaxhighlight> | ||
Touchscreen events are generated after touching capacitive touch screen. | Touchscreen events are generated after touching capacitive touch screen. | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
| − | + | Testing ... (interrupt to exit) | |
| − | - | + | Event: time 1658851286.1658851286, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 40 |
| − | - | + | Event: time 1658851286.1658851286, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 506 |
| − | -- | + | Event: time 1658851286.1658851286, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 478 |
| − | --- | + | Event: time 1658851286.1658851286, -------------- SYN_REPORT ------------ |
| − | --- | + | Event: time 1658851286.1658851286, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1 |
| − | -- | + | Event: time 1658851286.1658851286, -------------- SYN_REPORT ------------ |
| − | - | + | Event: time 1658851532.1658851532, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 41 |
| − | - | + | Event: time 1658851532.1658851532, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 453 |
| + | Event: time 1658851532.1658851532, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 447 | ||
| + | Event: time 1658851532.1658851532, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851532.1658851532, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 456 | ||
| + | Event: time 1658851532.1658851532, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 449 | ||
| + | Event: time 1658851532.1658851532, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 460 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 451 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 468 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 456 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 471 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 458 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 482 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 461 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 489 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 463 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 492 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 464 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 495 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 497 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 467 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 499 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 506 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 468 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 512 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 520 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 466 | ||
| + | Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 528 | ||
| + | Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 465 | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Latest revision as of 14:49, 11 September 2024
This section shows information about the Newhaven LVDS Capacitive Display Set. The iMX8M Industrial Development Kit in this configuration is equipped with Yocto dunfell, kernel 5.4 to support LVDS display with a touchscreen layer. In this case the display is installed on the top of the iMX Development Baseboard.
Mechanical connection
When combined with the complete iMX8M Industrial Kit, the Display Set creates a compact, ready-to-use solution. To assemble them together, the following mechanical and electrical accessories were designed and selected to be part of the Display set:
- TFT LCD 1024x600 Pixels display with LVDS interface and Capacitive Touch with SiS9509 controller
- 4x Hex Standoff Threaded M3 30.00mm long [Manufacturer PN: 971300321]
- 40 Position flat flex cable 50.80mm long [Manufacturer PN: 0150200427]
- 6 pin touchscreen flat flex cable
- necessary spacers
Hardware connection
To enable smooth communication between the board and the display, connect the 40 Position FFC cable for LCD and 6 pin touchscreen FFC cable. To implement the display capabilities, following connections need to be made:
- connection between LVDS Display and iMX Development Baseboard connector LVDS0 NHD (J12) using a 40 Position FFC cable
- touchscreen connection between iMX Development Baseboard connector NHD Touch (J13) and Touchscreen 6 pin FFC cable
LVDS and Touchscreen cable
Hardware jumpers Newhaven LVDS
Make sure that configurable 0R resistor are moved to Newhaven LVDS0 interface
Software instructions
iMX8M Industrial kit is preinstalled with Yocto dunfell operation system enabling LVDS and touchscreen capabilities by default. Manual configuration is necessary, Devicetree in U-Boot have to by set to NHD LVDS0 LCD.
LVDS0 NHD Devicetree in U-Boot
Manually booting with LVDS interface as a primary source for video output:
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot: 0
u-boot=>
u-boot=>
u-boot=>
u-boot=>
u-boot=>
u-boot=> fatls mmc 0:1
27787776 Image
48586 imx8mq-evk-voipac-dp.dtb
48793 imx8mq-evk-voipac-hdmi.dtb
49194 imx8mq-evk-voipac-lvds-koe.dtb
49198 imx8mq-evk-voipac-lvds-newhaven.dtb
5 file(s), 0 dir(s)
u-boot=> setenv fdt_file imx8mq-evk-voipac-lvds-newhaven.dtb
u-boot=> saveenv
Saving Environment to MMC... Writing to MMC(0)... OK
u-boot=>
u-boot=> boot
.
Touchscreen test
Default Voipac iMX8M Image contain evtest utility to catch touchscreen events. Make sure SiS9509 controller is detected and bound as input device. Select the device event number 1 (generic ft5x06 (79)):
root@imx8mq-voipac:~# evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0: 30370000.snvs:snvs-powerkey
/dev/input/event1: generic ft5x06 (79)
/dev/input/event2: gpio-buttons
/dev/input/event3: bd718xx-pwrkey
/dev/input/event4: Logitech USB Receiver
/dev/input/event5: Logitech USB Receiver Mouse
/dev/input/event6: Logitech USB Receiver Consumer Control
/dev/input/event7: Logitech USB Receiver System Control
Select the device event number [0-7]: 1
Input driver version is 1.0.1
Input device ID: bus 0x18 vendor 0x0 product 0x0 version 0x0
Input device name: "generic ft5x06 (79)"
Supported events:
Event type 0 (EV_SYN)
Event type 1 (EV_KEY)
Event code 330 (BTN_TOUCH)
Event type 3 (EV_ABS)
Event code 0 (ABS_X)
Value 308
Min 0
Max 1023
Event code 1 (ABS_Y)
Value 211
Min 0
Max 799
Event code 47 (ABS_MT_SLOT)
Value 0
Min 0
Max 4
Event code 53 (ABS_MT_POSITION_X)
Value 0
Min 0
Max 1023
Event code 54 (ABS_MT_POSITION_Y)
Value 0
Min 0
Max 799
Event code 57 (ABS_MT_TRACKING_ID)
Value 0
Min 0
Max 65535
Properties:
Property type 1 (INPUT_PROP_DIRECT)
Touchscreen events are generated after touching capacitive touch screen.
Testing ... (interrupt to exit) Event: time 1658851286.1658851286, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 40 Event: time 1658851286.1658851286, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 506 Event: time 1658851286.1658851286, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 478 Event: time 1658851286.1658851286, -------------- SYN_REPORT ------------ Event: time 1658851286.1658851286, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value -1 Event: time 1658851286.1658851286, -------------- SYN_REPORT ------------ Event: time 1658851532.1658851532, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 41 Event: time 1658851532.1658851532, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 453 Event: time 1658851532.1658851532, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 447 Event: time 1658851532.1658851532, -------------- SYN_REPORT ------------ Event: time 1658851532.1658851532, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 456 Event: time 1658851532.1658851532, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 449 Event: time 1658851532.1658851532, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 460 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 451 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 468 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 456 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 471 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 458 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 482 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 461 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 489 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 463 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 492 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 464 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 495 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 497 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 467 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 499 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 506 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 468 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 512 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 520 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 466 Event: time 1658851533.1658851533, -------------- SYN_REPORT ------------ Event: time 1658851533.1658851533, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 528 Event: time 1658851533.1658851533, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 465