Flowcode Support Board

Hello all.
I have a problem with the serial interfaces.
PIC32MZ2048EFH100 200MHz
where or how can I set the parity?
I would like to query a modbus sensor.
it has a 485 interface and 19200 baud.
8Data Bits 1 Stop Bit Parity even Modbus Address 247
Modbus RTU
The following Modbus RTU functions are supported:

Code, Name, Description
0x01, Read Coils, Read one or more coils
0x03, Read Holding Registers, reading a continuous holding register block
0x04, Read Input Registers, read one or more consecutive registers
0x05, Write Single Coil, Write one coil

I am curious who knows
thank you

Hello LeighM and dionyzoz
You once wrote some C code for the STM32 to set parity to EVEN.
I need the same for a PI32MZ2048EFH100

for the ST32 the code was

HAL_UART_DeInit(&MX_UART_NUMBER_1);
MX_UART_NUMBER_1.Init.Parity = UART_PARITY_EVEN;
HAL_UART_Init(&MX_UART_NUMBER_1);



Thanks a lot

Hello,

This is an interesting problem. I think for the PIC32 device it doesn't auto calculate the parity bit for you and so you would have to calculate it and put into the UART as a 9th data bit.

We can look at adding this into the component so you can enable it via a property and also maybe into the lower level CAL UART so we can potentially add it to any UART comms based system that may require it.

Hello Ben
I found the following on the page "PIC32 for the hobbyist" and tried a little.

void UART_Init()
{
int pbClk;

pbClk = SYS_FREQ / 2; // Our PBCLK2 divider was set to 1, so PBCLK2 is exactly half the speed of the system clock, or 100Mhz

U5MODE = 0; // Set UART 5 off prior to setting it up
U5MODEbits.BRGH = 0; // We want standard speed mode. Not necessary as we just set U5MODE to 0 so this is just for explanation's sake
U5BRG = pbClk / (16 * 38400) - 1;// This is the formula straight from the datasheet
U5STA = 0; // Disable the TX and RX pins, clear all flags
U5STAbits.UTXEN = 1; // Enable the TX pin
U5STAbits.URXEN = 1; // Enable the RX pin
U5MODEbits.PDSEL = 0; // PDSEL controls how many data bits and how many parity bits we want, this is the default of 8-bit data, no parity bits that most terminals use
U5MODEbits.STSEL = 0; // STSEL controls how many stop bits we use, let's use the default of 1
U5MODEbits.ON = 1; // Turn on the UART 5 peripheral


I use this as a macro

I can use the Modbus commands at the moment.
my sensor also responds.
As I understand it, the individual bytes that my sensor sends in response are automatically stored in the receive buffer.
Can you give me a short example based on my data?

this is being broadcast 0xF7 0x03(error) 0x07 0xE0 0x00(error) 0x02 0xd0 0x1f



this is received this is received "28.23926" this is °C

how do I get the value from the buffer.
I read it from the PC software of the sensor.

I hope you get it right.

I think the UART settings can be extended.

Thanks a lot

Hi

I also need to set Even Parity for Atmega 328P

anyone can help please