Search a good adapter USB serial <-> TTL

diizzy · December 18, 2019, 6:19pm

If you later on want to play around with Rockchip devices make sure it supports 1.5Mbaud

CP2014 or CP2012N

Take note of the 5V vs 3.3V

Avoid the CH3** like the plague

freebsd/freebsd/blob/master/sys/dev/usb/serial/uchcom.c#L63


* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/


#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");


/*
* Driver for WinChipHead CH341/340, the worst USB-serial chip in the
* world.
*/


#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>

The majority of FTDI FT232R(L) chips will be fakes so you'll be safer to go for another model if you want FTDI. The same goes for Prolific PL2303HX/HXA, go for PL2303TA instead (not sure if there are any known fakes of TA however).

All the chips mentioned above supports 1.5M (and above).