On Thu, 2011-08-11 at 15:34 +0200, David Lanzendoerfer wrote: > > In particular, the ttyMSM console interests me. > > What is this device? > > UARTs :-) > > > > It appears as though it's a serial port. Assuming a similar hardware > > configuration to the HTC Dream, is it possible to get access to this > > console output through the mini-USB port? If not, how might one access > > it? > > Well. You can access the bootloader etc. by directly communicating > over > > the internal UART port. > As long as the hardware design doesn't have changed in your phone. > > You can easily access it by using the breakout boards from > www.sparkfun.com
I've tried to detect signals coming out of my DEXT's mini-USB port while shoving bytes out its ttyMSM2 serial device. Alas, I found no signal. Looking through the kernel source, it appears that there are three UART "lines" on the msm7k, and a "HS" UART device. Only one of the three UART lines are actually brought up by Motorola's DEXT kernel. However, the kernel for the HTC Dream used in SHR unstable also has only one of its UART lines brought up. So, I would like to know whether the TTL-level serial port works with the HTC Dream kernel used in SHR unstable? Does anyone know? More generally, what is the relationship between the UART lines on the msm7k and the USB port? Must the hardware be appropriately assembled to connect the UART to the USB port, or is the USB port necessarily connected to the UART inside the SoC? Will it always be the same UART line? Thanks, Bob -- Bob Ham <[email protected]> for (;;) { ++pancakes; }
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