stm8s001j3 i/0 control problem

[nraj]

I am having a communication problem with MAX485 ic. I am trying to change Ic receiving mode to transmit mode by using 'PB4' pin and i am using UART1 , SWIM pin as a Transmitter. in some controllers i am unable control pin in the middle working. I am giving both IC's supply is 5V.

[Tesla DeLorean]

The presentation here is weak.

Show the HW side connectivity of the parts and paths involved.

Show the SW side implementation, initialization and logic of what's being done.

[nraj]

Thanks for the reply, please find the below connections between controller and 485 ic 

please find below configurations and operations

#define Tx_Enable      GPIO_WriteHigh(GPIOB, GPIO_PIN_4)

#define Rx_Enable      GPIO_WriteLow(GPIOB, GPIO_PIN_4)

GPIO_Init(GPIOB, GPIO_PIN_4,

      GPIO_MODE_OUT_PP_LOW_FAST);

int main( void )

{

GPIO_Init(GPIOB, GPIO_PIN_4,

      GPIO_MODE_OUT_PP_LOW_FAST);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, ENABLE);  

  UART1_Config();

  Rx_Enable;

  enableInterrupts();

Uart_Rx[4]=Meter_id;

   len=5;

Send_485(len);

while(1)

  { }

}

void Send_485(uint8_t Length)

 {

  Tx_Enable;

  Delay(1000);

  for(int i=0;i<Length;i++)

  {

   while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET)

    {

    }

   UART1_SendData8(Uart_Rx[i]);

 }

 Delay(1000);

  

  Rx_Enable;

 }

static void UART1_Config(void)

{

 /* EVAL COM (UART) configuration -----------------------------------------*/

 /* USART configured as follow:

    - BaudRate = 115200 baud  

    - Word Length = 8 Bits

    - One Stop Bit

    - Odd parity

    - Receive and transmit enabled

    - UART Clock disabled

 */

  

 //UART1_DeInit();

 GPIO_DeInit(GPIOA);

GPIO_Init(GPIOA, GPIO_PIN_1, GPIO_MODE_IN_PU_NO_IT);

  GPIO_Init(GPIOD, GPIO_PIN_1,

      GPIO_MODE_OUT_OD_HIZ_FAST);

 UART1_Init((uint32_t)9600, UART1_WORDLENGTH_8D,UART1_STOPBITS_1, UART1_PARITY_NO,

          UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TXRX_ENABLE);

 /* Enable the UART Receive interrupt: this interrupt is generated when the UART

  receive data register is not empty */

 UART1->BRR1 = 0x68;

  UART1->CR2 = 0x2C;

 /* Enable UART */

 //UART1_Cmd(ENABLE);

  

  /* Enable general interrupts */

 // enableInterrupts();

}