To do this, I need to set the BCM USART#6 TX pin as an output in Open-Drain with pull-up, so I can short it with the RX pin. Is there a way to initialize the UART with TX as Open-Drain? I saw that it is possible with GPIO, but I can't find a solution for funct...
// P0.5 - RX0 (UART0), Push-Pull, Digital // P0.6 - Unassigned, Push-Pull, Digital // P0.7 - Unassigned, Push-Pull, Digital // P1.0 - Unassigned, Push-Pull, Digital // P1.1 - Unassigned, Open-Drain, Digital // P1.2 - Unassigned, Open-Drain, Digital // P1.3 - Unassigned, ...
/**< configure in Push Pull or Open Drain mode the Tx I/O line by setting the correct I/O Port register according the product package and line configuration*/ } else { UART2->CR3 |= (u8)((u8)SyncMode & UART2_CR3_CKEN); } } void UART2_Cmd(FunctionalState NewState) { if (New...
O JIG detection JIG detection (Open-drain). Used for factory test modes O I/O voltage reference O Interrupt to host (push-pull) I I2C clock I/O I2C data Ground I VBUS connected to USB receptacle I/O USB DM connected to USB receptacle I/O USB DP connected to USB receptacle I/O ...
/**< configure in Push Pull or Open Drain mode the Tx I/O line by setting the correct I/O Port register according the product package and line configuration*/ } else { UART2->CR3 |= (u8)((u8)SyncMode & UART2_CR3_CKEN);
Ideally, your RS-232 level shifter would put out 3V on ROUT or would have an open drain / open collector ROUT that you could just pull up via internal pull-up. Yep. Unfortunately, none if the cheap standard chips offers this. The 3V chips are exp...
Unassigned, Open-Drain, Digital // P0.2 - Unassigned, Open-Drain, Digital // P0.3 - Unassigned, Open-Drain, Digital // P0.4 - TX0 (UART0), Open-Drain, Digital // P0.5 - RX0 (UART0), Open-Drain, Digital // P0.6 - Skipped, Push-Pull, Analog // P0.7 - Skipped, Push-Pull,...
(~UART2_CR3_CKEN); /**< Clear the Clock Enable bit */ /**< configure in Push Pull or Open Drain mode the Tx I/O line by setting the correct I/O Port register according the product package and line configuration*/ } else { UART2->CR3 |= (u8)((u8)SyncMode & UART2_CR3_CKEN...
push-pull or open- drain output type, VEXT > 2.3V Sink current = 20mA, push-pull or open- drain output type, VEXT < 2.3V Source current = 5mA, push-pull output type GPIO_ is configured as an input GPIO_ is configured as an input VGPIO_ = VEXT = 3.6V, GPIO_ is configured as...
They made it push-pull to be able to work at high baud rates. As it is not an open-drain, configuring an open-drain on the MCU side cannot save from a short connection. Therefore the 1k series resistor must always be present, even with a single driver! And, as the...