Hello friends, I am trying to get UART1 output from STM32F767 using Keil, There is no output showing in the Serial monitor. I am adding my code with this Please help me out

>>If you don't mind could you guide me to resolve the issue

When you go free climbing you don't expect people to run ropes for you. Consider more normative programing styles.

Remember the USART output at CMOS Levels, not RS232 Levels

//****************************************************************************
 
void usart1_init(void) // USART1 PB14/PB15
{
 RCC->AHB1ENR |= 1<<1; // GPIOB
 RCC->APB2ENR |= 1<<4; // USART1
 
 GPIOB->MODER = (GPIOB->MODER & 0x0FFFFFFF) | 0xA0000000; // PB15/PB14 AF
 GPIOB->OSPEEDR = (GPIOB->OSPEEDR & 0x0FFFFFFF); // PB15/PB14 9.6KHZ BELOW 2MHZ
 GPIOB->OTYPER = (GPIOB->OTYPER & 0x3FFF); // PB15/PB14 OUTPUT-PP AF OVERRIDES
 GPIOB->PUPDR = (GPIOB->PUPDR & 0x0FFFFFFF); // PB15/PB14 NO PULL
 GPIOB->AFR[1] = (GPIOB->AFR[1] & 0x00FFFFFF) | 0x44000000; // PB15/PB14 AF4
 
 USART1->CR1 = (1 << 3) | (1 << 2); // TE RE
 USART1->BRR = ((16000000)/9600); // Baud rate for 9600 from HSI
 USART1->CR2 = 0;
 USART1->CR3 = 0;
 USART1->GTPR = 0;
 USART1->CR1 |= (1 << 0); // UE
}
 
 
void usart1_outchar(char c)
{
 while((USART1->ISR & (1<<7)) == 0);
 USART1->TDR = c;
}
 
void usart1_outstring(char *s)
{
 while(*s)
 usart1_outchar(*s++);
}
 
void usart1_test(void)
{
 usart1_init();
 usart1_outstring("Hello World!\r\n");
}
 
//****************************************************************************
 
void usart3_init(void) // USART3 PD8/PD9 - NUCLEO-144
{
 RCC->AHB1ENR |= 1<<3; // GPIOD
 RCC->APB1ENR |= 1<<18; // USART3
 
 GPIOD->MODER = (GPIOD->MODER & 0xFFF0FFFF) | 0x000A0000; // PD9/PD8 AF
 GPIOD->OSPEEDR = (GPIOD->OSPEEDR & 0xFFF0FFFF); // PD9/PD8 9.6KHZ BELOW 2MHZ
 GPIOD->OTYPER = (GPIOD->OTYPER & 0xFFCF); // PD9/PD8 OUTPUT-PP AF OVERRIDES
 GPIOD->PUPDR = (GPIOD->PUPDR & 0xFFF0FFFF); // PD9/PD8 NO PULL
 GPIOD->AFR[1] = (GPIOD->AFR[1] & 0xFFFFFF00) | 0x00000077; // PD9/PB8 AF7
 
 USART3->CR1 = (1 << 3) | (1 << 2); // TE RE
 USART3->BRR = ((16000000)/9600); // Baud rate for 9600 from HSI
 USART3->CR2 = 0;
 USART3->CR3 = 0;
 USART3->GTPR = 0;
 USART3->CR1 |= (1 << 0); // UE
}
 
 
void usart3_outchar(char c)
{
 while((USART3->ISR & (1<<7)) == 0);
 USART3->TDR = c;
}
 
void usart3_outstring(char *s)
{
 while(*s)
 usart3_outchar(*s++);
}
 
void usart3_test(void)
{
 usart3_init();
 usart3_outstring("Hello World!\r\n");
}
 
//****************************************************************************