diff options
| author | Gregory Nutt <gnutt@nuttx.org> | 2014-09-27 09:50:07 -0600 |
|---|---|---|
| committer | Gregory Nutt <gnutt@nuttx.org> | 2014-09-27 09:50:07 -0600 |
| commit | 7dff5a2e5d06f0760759df6790aa144eb143ddb8 (patch) | |
| tree | 1f103d470c254cc9e1b23a73ced2bb39b726fa4c /nuttx/configs/galileo | |
| parent | 0760a5e0c2b8b975f97469cef80bd1ee049b845d (diff) | |
| download | nuttx-7dff5a2e5d06f0760759df6790aa144eb143ddb8.tar.gz nuttx-7dff5a2e5d06f0760759df6790aa144eb143ddb8.tar.bz2 nuttx-7dff5a2e5d06f0760759df6790aa144eb143ddb8.zip | |
Updated README.txt files
Diffstat (limited to 'nuttx/configs/galileo')
| -rwxr-xr-x | nuttx/configs/galileo/README.txt | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/nuttx/configs/galileo/README.txt b/nuttx/configs/galileo/README.txt new file mode 100755 index 000000000..2e1452e52 --- /dev/null +++ b/nuttx/configs/galileo/README.txt @@ -0,0 +1,52 @@ +README.txt +========== + + This README.txt file discusses the port of NuttX to the Intel Galileo + board. + + NOTE: There is no port for the Galileo in place as of this writing. At this + point in time, this README file is only a repository for pre-porting + information. It is not clear as of this writing whether there ever will + be a port to the Galileo development board or not. + +LEDs and Buttons +================ + +Serial Console +============== + +Serial Console +============== + + Galileo provides two options for a Serial Console: + + 1) UART TTL (5V/3.3V) serial communication is available on Arduino + digital 0 (pin 1, IO0) and digital 1 (pin 2, IO1). The function of IO0 + and IO1 are controlled via a TS5A23159 2-channel 2: + multiplexer/demultiplexer + + --- ---- --------- ------------------------------------- + PIN NAME SIGNAL DESCRIPTION + --- ---- --------- ------------------------------------- + 1 IN1 IO0_MUX Select NO1 or NC1 as IO on COM1 = IO0 + 2 NO1 LVL_RXD IN=L, IO0=RXD + 3 NC1 IO0_GPIO IN=H, IO0=GPIO + --- ---- --------- ------------------------------------- + 5 IN2 IO1_MUX Select NO1 or NC1 as IO on COM2 = IO1 + 4 NO2 IO1_GPIO IN=L, IO1=GPIO + 7 NC2 LVL_TXD IN=H, IO2=TXD + --- ---- --------- ------------------------------------- + + The LVL_RXD/LVL_TXD driver from UART0_TXD/UART0_RXD via a TXS0108E + voltage level translator that brings the which brings 1.2-3.6V signals + to 165-5.5V. + + 2) In addition, a second UART provides RS-232 support via a MAX3232 driver + and is connected via a 3.5mm jack: Sleeve = GND, RING=SERIAL1_RXD, and + TIP=SERIAL1_TXD. + + UART1 may be convenient because of its built-in RS232 drivers. But if you + have a standard RS-232 shield, then UART0 may be the better choice. + +Configurations +============== |