UART » History » Revision 28
Revision 27 (Denis 'GNUtoo' Carikli, 12/17/2018 02:10 PM) → Revision 28/93 (Denis 'GNUtoo' Carikli, 01/21/2019 11:54 PM)
h1. Serial port
There is an in-depth article covering several Samsung devices in the [[SamsungSerial]] page
h2. Settings
|_. Device and documentation |_. I/O voltage |_. ID<->GND |_. SOC TX |_. SOC RX |_. switch |_. Comments |
| I9300 | 1.8V[1] | 619 kOhms[3] | D- | D+ | | It gives a shell once Replicant has booted |
| [[NexusSI902xSerial|Nexus S]] | | 150 kOhm | | | FSA9480 | |
| [[GalaxyNexusI9250SerialConsole|Galaxy Nexus]] | | 619 kOhms[4] | | | | |
| [[OptimusBlackSerial|Optimus Black]] | | N/A[2] | | | DP3T | |
fn1. Measured between USB GND and USB VCC
fn2. Code is required to use the switch as you need to configure both the MUIC and DP3T switch
fn3. See "The related driver source code":https://git.replicant.us/replicant/kernel_samsung_smdk4412/tree/drivers/misc/max77693-muic.c#n102
fn4. See the "postmarketOS wiki page on Serial debugging":https://wiki.postmarketos.org/wiki/Serial_debugging
h2. Interesting links
There is a "page on Serial debugging":https://wiki.postmarketos.org/wiki/Serial_debugging on the postmarketOS wiki that contains information for using the serial port for many smartphones models.