Receiver

int main(void) {
    uint8_t c;

    /* Initialize system */
    SystemInit();

    /* Initialize USART1 at 9600 baud, TX: PB6, RX: PB7 */
    TM_USART_Init(USART1, TM_USART_PinsPack_2, 9600);

    /* Put string to USART */
    //TM_USART_Puts(USART1, "Hello world\n\r");
    GPIO_InitTypeDef GPIO_InitDef;
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE);
    GPIO_InitDef.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14;
    GPIO_InitDef.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitDef.GPIO_OType = GPIO_OType_PP;
    GPIO_InitDef.GPIO_PuPd = GPIO_PuPd_NOPULL;
    GPIO_InitDef.GPIO_Speed = GPIO_Speed_100MHz;
    //Initialize pins
    GPIO_Init(GPIOG, &GPIO_InitDef);

    while (1) {
        /* Get character from internal buffer */
        c = TM_USART_Getc(USART1);
        if (c) {
            /* If anything received, put it back to terminal */
            GPIO_SetBits(GPIOG, GPIO_Pin_13 | GPIO_Pin_14);
        }
    }
}