Difference between revisions of "DESK-MX9-L/Peripherals/UART"
(Created page with "<section begin=History/> {| style="border-collapse:collapse; " !colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History |- ! style="border-l...") |
(Tag: Visual edit) |
||
| Line 1: | Line 1: | ||
| − | <section begin=History/> | + | <section begin="History" /> |
{| style="border-collapse:collapse; " | {| style="border-collapse:collapse; " | ||
| − | !colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History | + | ! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History |
|- | |- | ||
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#ededed; padding:5px; color:#000000" |2024/01/30 | ! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#ededed; padding:5px; color:#000000" |2024/01/30 | ||
| Line 7: | Line 7: | ||
|- | |- | ||
|} | |} | ||
| − | <section end=History/> | + | <section end="History" /> |
| − | <section begin=Body/> | + | <section begin="Body" /> |
==Peripheral UART == | ==Peripheral UART == | ||
| Line 16: | Line 16: | ||
==== AURA SOM ==== | ==== AURA SOM ==== | ||
| − | Here below an example of device tree modifications to standard DAVE's kit for the | + | Here below an example of device tree modifications to standard DAVE's kit for the AURA SOM: |
| − | From <code> | + | From <code>imx93-aura-cb2001.dts</code>: |
<pre> | <pre> | ||
| Line 81: | Line 81: | ||
---- | ---- | ||
| − | [[Category:AURA]] [[Category:SBCX AURA]] | + | [[Category:AURA]] |
| + | [[Category:SBCX AURA]] | ||
Revision as of 10:39, 31 January 2024
| HOME | SOMs | SBCs | ToloMEO Embedded Assistant |  GET A QUOTE
|
 ONLINE HELPDESK
|
| Roadmap | IoT Services | ML/AI services | Embedded Design Services |
| History | |||
|---|---|---|---|
| 2024/01/30 | DESK-MX9-L-5.0.0 release | ||
Contents
Peripheral UART[edit | edit source]
Device tree configuration[edit | edit source]
AURA SOM[edit | edit source]
Here below an example of device tree modifications to standard DAVE's kit for the AURA SOM:
From imx93-aura-cb2001.dts:
...
...
&lpuart4 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart4>;
status = "okay";
};
...
&iomuxc {
...
pinctrl_uart4: uart4grp{
fsl,pins = <
MX93_PAD_GPIO_IO14__LPUART4_TX 0x31e
MX93_PAD_GPIO_IO15__LPUART4_RX 0x31e
>;
};
...
Accessing the peripheral in AURA SOM[edit | edit source]
Linux messages at boot time[edit | edit source]
... [ 0.847346] 44380000.serial: ttyLP0 at MMIO 0x44380010 (irq = 18, base_baud = 1500000) is a FSL_LPUART [ 0.856702] printk: console [ttyLP0] enabled [ 0.875438] 44390000.serial: ttyLP1 at MMIO 0x44390010 (irq = 19, base_baud = 1500000) is a FSL_LPUART [ 0.885307] 42580000.serial: ttyLP3 at MMIO 0x42580010 (irq = 20, base_baud = 1500000) is a FSL_LPUART [ 0.895137] 42690000.serial: ttyLP2 at MMIO 0x42690010 (irq = 21, base_baud = 1500000) is a FSL_LPUART ...
Usage with stty[edit | edit source]
N.B. UART mapping respect to ttyLPX is the following one:
LPUART1 (RS232) <-> ttyLP00 LPUART2 (Multiprotocol) <-> ttyLP1 LPUART3 (UART) <-> ttyLP2 LPUART4 (UART) <-> ttyLP3 ...
root@desk-mx93:~# stty -F /dev/ttyLP1 115200 -echo -raw root@desk-mx93:~# cat /dev/ttyLP1 > test_ttyLP1.log & [1] 716 root@desk-mx93:~# echo "Test loopback" > /dev/ttyLP1 root@desk-mx93:~# cat test_ttyLP1.log Test loopback root@desk-mx93:~#
Additional information[edit | edit source]
Serial ports can be used through the standard serial programming API.
For detailed information, please refer to the Serial Programming HOWTO at Serial-Programming-HOWTO
