Pfthb

So, I have a school project where we have to send commands to an Arduino Uno, when it receives the command it will send data from a sensor back. Now i have it working to the part where if I send a command over putty it will react to it. But here is the problem: When I send a command over Python it won't do anything with it. To be clear; I can receive output of my sensor with Python, but then I have a C program continuously pushing me data.

Here is my Python code:

import serial,time
ComPort = serial.Serial('COM3')
ComPort.baudrate = 19200
ComPort.bytesize = 8
ComPort.parity = 'N'
ComPort.stopbits = 1
data = "4"
data = data.encode("utf-8")
time.sleep(1.6)
ComPort.write(data)
out = " "
i = 0
while i < 1:
 while ComPort.inWaiting() > 0: 
 out +=ComPort.read(1).decode()
 i = i + 1
ComPort.close()

And here is my C code; I left some parts out because that had to do with the sensor, the sensor works fine

#define F_CPU 16E6
#include <avr/interrupt.h>
#include <util/delay.h>
#include <stdlib.h>

#define UBBRVAL 51
void uart_init() _BV(RXEN0);
 // set frame format : asynchronous, 8 data bits, 1 stop bit, no parity
 UCSR0C = _BV(UCSZ01) 

void UART_Putstring(char* eenstring)

 while(*eenstring != 0X00)
 
 transmit(*eenstring);
 eenstring++;
 


unsigned char receive( void )

 /* Wait for data to be received */
 while ( !(UCSR0A & (1<<RXC0)) );
 /* Get and return received data from buffer */
 return UDR0;

void transmit(uint8_t data)

 // wait for an empty transmit buffer
 // UDRE is set when transmit buffer is empty
 loop_until_bit_is_set(UCSR0A, UDRE0);
 // send the data
 UDR0 = data;


int main(void)

 char tot_string[6];
 uint8_t tijdelijk;
 float tijdelijk_float;
 char input;

 DDRD 

So i found the answer, it is really simple. Just simply do this in C:

if(input() == '4')

 tijdelijk = hcsr04();
 tijdelijk_float = (float)(tijdelijk) * 40;
 tijdelijk_float = tijdelijk_float/58; 
 dtostrf(tijdelijk_float, 2, 2, tot_string);
 UART_Putstring(tot_string);