Errata Sheet Es0291 error for STM32F070xB

[ingwmeier]

Posted on September 23, 2016 at 08:26

en.DM00148061.pdf 1.2.2 says:

USART4_RX does not work as output on PC11

As a consequence, single wire half duplex mode is not supported with pin PC11.

->Use USART4_RX mapped on PA0 instead on PC11 (PA0 is USART4_TX!!)

actually PC10 (TX) is used for single wire half duplex mode (without pin swapping: don't know if this even works, cannot be selected for single wire mode in CUBE)

PA0 is also TX.

Big question: does PC10 actually work for single wire half duplex mode as USART4?

could anybody shed a little light into this confusion?

#singlewire-usart4-mode

[Walid FTITI_O]

Posted on September 23, 2016 at 11:17

Hi Werner Meier,

It is not clear if you have already tested PA10 znd PA0 as USART4_Tx . Have run a real code to achieve singlle wire half duplex ? have you succeed to transmit bits then? HAve you developed your own code or tested a ready-to-use example ? have you used CubeMx ?

-Hannibal-

[ingwmeier]

Posted on September 26, 2016 at 09:17

just realized, that the same errata's exist for the STM32F072, where we succesfully use single wire comm on PC10, so for us everything works hopefully also with an STM32F070

however, the errata sheet has errors which in my opinion should be corrected.