UART0
From t-hack.com - Hack X300T / X301T
m (→General information on the Serial Ports) |
(→How to built a debug interface) |
||
| Line 31: | Line 31: | ||
[[image:Pinout.jpg|thumb]] | [[image:Pinout.jpg|thumb]] | ||
| − | The needed pins are show in the image on the right | + | The needed pins are show in the image on the right (NOTE: vcc-pin (5V) is on the left hand side next to the ground pin) |
Please note that the voltage level of the I/O pins is 3.3V so you will need a voltage level convertor to interface with a standard PC serial port. | Please note that the voltage level of the I/O pins is 3.3V so you will need a voltage level convertor to interface with a standard PC serial port. | ||
This can be done with a Max3232 chip, but I would advise to use a "3.3Vserial port -> USB connector". | This can be done with a Max3232 chip, but I would advise to use a "3.3Vserial port -> USB connector". | ||
| − | You can find cheap mobile interface cables that | + | You can find cheap mobile interface cables that perfectly fit: |
| + | *original Siemens data cable DCA-510 (USB) | ||
| + | *original Siemens data cable DCA-500 (serial) | ||
| + | **NOTE: since the 3,3v level-converter is not powered from pc, one need to connect the vcc pin in order to power the max3232. however, this is only needed for the original cables, no-name cables are usually powered from pc | ||
| + | |||
| + | |||
| + | Both can be grabbed from ebay for some euros. | ||
| + | |||
| + | |||
| + | The below picture shows the connector pinout for the Siemens S55 (and others): | ||
[[image:Siemens_12p.gif]] | [[image:Siemens_12p.gif]] | ||
