Hi,
Can somebody explain how to really use the CDC ACM (serial over usb) on a STM32F1? In libopencm3-examples, there is an example on using cdc acm (serial-over-usb), however I cannot modify the example to do something usefull. The example only sets up the cdcacm-device and then does two things: - there is an endless loop that just does usbd_poll - inside the callback function, there is some code that echoes the characters it received back to the usb-device. But how do you write an application that actually does something usefull? When I modify the "usbd_poll" loop to actually does something (like just print out a line "count = ...", this results in errors when I boot the device (i.e. "Device not responding to setup address."). So it looks like you really need to have this continues-cycle of the usbd_poll running. So how I you actually make an application that uses that cdcacm interface and make it actually do something usefull? Cheerio! Kr. Bonne. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ libopencm3-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libopencm3-devel
