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how to interface u1 and u2 using uart protocol
aakash0525

aakash0525

@copilot how to interface u1 and u2 using uart protocol
2y

copilot

When interfacing two devices with the UART protocol, it involves connecting the Transmit (Tx) pin of one device to the Receive (Rx) pin of the other and vice versa. So, for UART data communication between device U1 and device U2, you'll want to cross-connect Tx and Rx lines.
Assuming U1 is your transmitter and U2 is your receiver, the connections would be:
  1. Connect U1:Tx to U2:Rx
  2. Connect U1:Rx to U2:Tx
Remember, you'll also want to connect the ground pins of both U1 and U2 as well. This is crucial for reliable UART communication.
Without more specific information about the components labeled as U1 and U2 in your schematic, it's hard to give you detailed pin descriptions. Please provide more details if you'd like a more precise answer.
Keep in mind that this configuration allows for a point-to-point connection. If you need multi-device communication, consider using a protocol such as SPI or I2C.
Also note that UART communication parameters (baud rate, stop bit, parity bit, and data length) must be the same on both devices for the proper data exchange.
2y
3
list all U1 pins in a table format. For each pin provide its pin number, pin nam...
aakash0525

aakash0525

@copilot list all U1 pins in a table format. For each pin provide its pin number, pin name and function.
2y

copilot

I'm sorry, but without any datasheet excerpts for the STM32H753IIT6 microcontroller, it's challenging to provide the functions for all its pins.
That being said, you can refer to the manufacturer's datasheet directly for this information, as it provides the most accurate and up-to-date details regarding both the pin names and functions. The STM32H753IIT6 is a product of STMicroelectronics so you should find the datasheet on their official site or in authorized components database online.
If you'd like, I could still provide a list with pin numbers and names based on what is available in the project description:
| Pin Number | Pin Name |
| --- | --- |
| 1 | PE2 |
| 2 | PE3 |
| 3 | PE4 |
| 4 | PE5 |
| 5 | PE6 |
| 6 | VBAT |
| . | ...  |
| . | ...  |
| 175 | PI6 |
| 176 | PI7 |
I'm afraid you'll have to fill in the functions column yourself based on your consultation of the datasheet. If you have any further questions or require assistance with something else, feel free to ask!
2y
aakash0525

aakash0525

how to provide power to u1
2y

copilot

The STM32H753IIT6 is powered primarily through its VDD and VSS pins, which are the power supply and ground pins, respectively. However, without the datasheet, I'm making assumptions based on common practices for this type of microcontroller.
Remember to connect the power source to the VDD pins and the ground to the VSS pins. Given the frequency and processing power of the STM32H753IIT6, a voltage supply in the range of 1.8V to 3.6V is usually acceptable.
Here are the pins related to supplying power:
  • VDD pins: Pin 15, 23, 36, 49, 62, 72, 82, 91, 103, 114, 127, 136, 149, 159, and 172 are power supply pins - connect them to your 3.3V supply.
  • VSS pins: Pin 14, 22, 48, 61, 71, 90, 102, 113, 126, 135, 148 and 158 are ground connections - connect them to your ground.
  • VCAP1 and VCAP2 (Pin 81 and 125) are both typically connected to a decoupling capacitor to filter noise from the power supply.
  • VDDA and VSSA (Pin 39 and 37) are the power supply and ground pins for the analog peripherals of the microcontroller. These should be connected to a clean power supply to ensure proper operation of the analog peripherals.
  • VREF+ (Pin 38) is typically used to provide a reference voltage for the ADC peripheral. This pin can be connected to an external voltage reference, or it can be tied to VDDA in single-ended mode.
Here are the basic power connections you should make:
  • Connect U1:VDD (15, 23, 36, 49, 62, 72, 82, 91, 103, 114, 127, 136, 149, 159, 172) to your 3.3V supply.
  • Connect U1:VSS (14, 22, 48, 61, 71, 90, 102, 113, 126, 135, 148, 158) to Ground.
  • Connect U1:VCAP1 (81) to a decoupling capacitor and then to Ground.
  • Connect U1:VCAP2 (125) to a decoupling capacitor and then to Ground.
  • Connect U1:VDDA (39) to a clean 3.3V supply.
  • Connect U1:VSSA (37) to Ground.
Note: Assumptions about which specific pins to connect to the power supply and which to connect to the ground are based on common practices for this type of microcontroller. Refer to the specific datasheet to confirm these power connection points.
2y
2
U1
U2

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